/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_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 01:57:25,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 01:57:25,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 01:57:25,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-22 01:57:25,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-22 01:57:25,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-22 01:57:25,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-22 01:57:25,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-22 01:57:25,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-22 01:57:25,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-22 01:57:25,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-22 01:57:25,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-22 01:57:25,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-22 01:57:25,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-22 01:57:25,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-22 01:57:25,215 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 01:57:25,255 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 01:57:25,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 01:57:25,256 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 01:57:25,256 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 01:57:25,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 01:57:25,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 01:57:25,259 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 01:57:25,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 01:57:25,259 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 01:57:25,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 01:57:25,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 01:57:25,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 01:57:25,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 01:57:25,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 01:57:25,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 01:57:25,261 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 01:57:25,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 01:57:25,261 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 01:57:25,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 01:57:25,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 01:57:25,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 01:57:25,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 01:57:25,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 01:57:25,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 01:57:25,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 01:57:25,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 01:57:25,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 01:57:25,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 01:57:25,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 01:57:25,262 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 01:57:25,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 01:57:25,263 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 01:57:25,263 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 01:57:25,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 01:57:25,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 01:57:25,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 01:57:25,575 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-22 01:57:25,576 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-22 01:57:25,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl [2021-05-22 01:57:25,577 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl' [2021-05-22 01:57:25,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 01:57:25,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-22 01:57:25,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 01:57:25,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 01:57:25,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 01:57:25,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:25" (1/1) ... [2021-05-22 01:57:25,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:25" (1/1) ... [2021-05-22 01:57:25,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 01:57:25,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 01:57:25,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 01:57:25,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 01:57:25,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:25" (1/1) ... [2021-05-22 01:57:25,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:25" (1/1) ... [2021-05-22 01:57:25,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:25" (1/1) ... [2021-05-22 01:57:25,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:25" (1/1) ... [2021-05-22 01:57:25,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:25" (1/1) ... [2021-05-22 01:57:25,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:25" (1/1) ... [2021-05-22 01:57:25,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:25" (1/1) ... [2021-05-22 01:57:25,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 01:57:25,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 01:57:25,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 01:57:25,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 01:57:25,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:25" (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 01:57:25,699 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-05-22 01:57:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-05-22 01:57:25,699 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-05-22 01:57:25,699 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-05-22 01:57:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-05-22 01:57:25,699 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-05-22 01:57:25,700 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-05-22 01:57:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-05-22 01:57:25,700 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-05-22 01:57:25,700 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-05-22 01:57:25,700 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-05-22 01:57:25,700 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-05-22 01:57:25,700 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-05-22 01:57:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-05-22 01:57:25,701 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-05-22 01:57:25,701 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-22 01:57:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 01:57:25,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 01:57:25,701 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-05-22 01:57:25,701 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-05-22 01:57:25,701 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-05-22 01:57:25,702 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-05-22 01:57:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-05-22 01:57:25,702 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-05-22 01:57:25,702 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-05-22 01:57:25,702 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-05-22 01:57:25,702 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-05-22 01:57:25,703 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 01:57:25,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 01:57:25,865 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-22 01:57:25,866 INFO L202 PluginConnector]: Adding new model example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:57:25 BoogieIcfgContainer [2021-05-22 01:57:25,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 01:57:25,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 01:57:25,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 01:57:25,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 01:57:25,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:25" (1/2) ... [2021-05-22 01:57:25,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dc6d66 and model type example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 01:57:25, skipping insertion in model container [2021-05-22 01:57:25,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:57:25" (2/2) ... [2021-05-22 01:57:25,878 INFO L111 eAbstractionObserver]: Analyzing ICFG example_8.bpl [2021-05-22 01:57:25,887 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 01:57:25,887 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 01:57:25,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 01:57:25,888 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 01:57:26,074 INFO L149 ThreadInstanceAdder]: Constructed 64 joinOtherThreadTransitions. [2021-05-22 01:57:26,091 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 01:57:26,106 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:57:26,107 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:57:26,107 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:57:26,107 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:57:26,107 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:57:26,107 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:57:26,107 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:57:26,107 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 01:57:26,117 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 99 transitions, 430 flow [2021-05-22 01:57:38,309 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 68819 states, 68817 states have (on average 5.968220061903309) internal successors, (410715), 68818 states have internal predecessors, (410715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:38,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 68819 states, 68817 states have (on average 5.968220061903309) internal successors, (410715), 68818 states have internal predecessors, (410715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:57:39,237 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:39,238 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, 1, 1, 1, 1] [2021-05-22 01:57:39,238 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:39,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:39,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1841314055, now seen corresponding path program 1 times [2021-05-22 01:57:39,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:39,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191533105] [2021-05-22 01:57:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:39,437 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 01:57:39,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:39,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191533105] [2021-05-22 01:57:39,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191533105] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:39,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:39,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:57:39,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082373267] [2021-05-22 01:57:39,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:57:39,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:39,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:57:39,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:39,564 INFO L87 Difference]: Start difference. First operand has 68819 states, 68817 states have (on average 5.968220061903309) internal successors, (410715), 68818 states have internal predecessors, (410715), 0 states have call successors, (0), 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 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:40,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:40,751 INFO L93 Difference]: Finished difference Result 66632 states and 393219 transitions. [2021-05-22 01:57:40,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:57:40,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:57:40,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:41,469 INFO L225 Difference]: With dead ends: 66632 [2021-05-22 01:57:41,470 INFO L226 Difference]: Without dead ends: 66630 [2021-05-22 01:57:41,472 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:43,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66630 states. [2021-05-22 01:57:45,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66630 to 66630. [2021-05-22 01:57:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66630 states, 66629 states have (on average 5.901589398009875) internal successors, (393217), 66629 states have internal predecessors, (393217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:47,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66630 states to 66630 states and 393217 transitions. [2021-05-22 01:57:47,099 INFO L78 Accepts]: Start accepts. Automaton has 66630 states and 393217 transitions. Word has length 33 [2021-05-22 01:57:47,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:47,099 INFO L482 AbstractCegarLoop]: Abstraction has 66630 states and 393217 transitions. [2021-05-22 01:57:47,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 66630 states and 393217 transitions. [2021-05-22 01:57:47,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:57:47,691 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:47,691 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:47,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 01:57:47,692 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:47,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:47,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1230509281, now seen corresponding path program 1 times [2021-05-22 01:57:47,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:47,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580461332] [2021-05-22 01:57:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:47,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:47,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580461332] [2021-05-22 01:57:47,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580461332] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:47,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:47,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:57:47,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497622541] [2021-05-22 01:57:47,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:57:47,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:47,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:57:47,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:47,802 INFO L87 Difference]: Start difference. First operand 66630 states and 393217 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:48,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:48,529 INFO L93 Difference]: Finished difference Result 59340 states and 340729 transitions. [2021-05-22 01:57:48,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:57:48,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:57:48,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:48,932 INFO L225 Difference]: With dead ends: 59340 [2021-05-22 01:57:48,932 INFO L226 Difference]: Without dead ends: 59340 [2021-05-22 01:57:48,933 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:50,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59340 states. [2021-05-22 01:57:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59340 to 59340. [2021-05-22 01:57:52,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59340 states, 59339 states have (on average 5.74207519506564) internal successors, (340729), 59339 states have internal predecessors, (340729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59340 states to 59340 states and 340729 transitions. [2021-05-22 01:57:52,902 INFO L78 Accepts]: Start accepts. Automaton has 59340 states and 340729 transitions. Word has length 33 [2021-05-22 01:57:52,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:52,902 INFO L482 AbstractCegarLoop]: Abstraction has 59340 states and 340729 transitions. [2021-05-22 01:57:52,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 59340 states and 340729 transitions. [2021-05-22 01:57:53,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:57:53,079 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:53,079 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, 1, 1, 1, 1] [2021-05-22 01:57:53,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-22 01:57:53,080 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:53,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:53,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1462759847, now seen corresponding path program 1 times [2021-05-22 01:57:53,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:53,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628956776] [2021-05-22 01:57:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:53,129 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 01:57:53,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:53,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628956776] [2021-05-22 01:57:53,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628956776] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:53,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:53,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:57:53,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129311711] [2021-05-22 01:57:53,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:57:53,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:53,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:57:53,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:53,132 INFO L87 Difference]: Start difference. First operand 59340 states and 340729 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:53,857 INFO L93 Difference]: Finished difference Result 43707 states and 246391 transitions. [2021-05-22 01:57:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:57:53,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:57:53,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:54,087 INFO L225 Difference]: With dead ends: 43707 [2021-05-22 01:57:54,087 INFO L226 Difference]: Without dead ends: 43707 [2021-05-22 01:57:54,087 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43707 states. [2021-05-22 01:57:56,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43707 to 43707. [2021-05-22 01:57:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43707 states, 43706 states have (on average 5.6374639637578365) internal successors, (246391), 43706 states have internal predecessors, (246391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43707 states to 43707 states and 246391 transitions. [2021-05-22 01:57:56,594 INFO L78 Accepts]: Start accepts. Automaton has 43707 states and 246391 transitions. Word has length 33 [2021-05-22 01:57:56,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:56,595 INFO L482 AbstractCegarLoop]: Abstraction has 43707 states and 246391 transitions. [2021-05-22 01:57:56,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:56,595 INFO L276 IsEmpty]: Start isEmpty. Operand 43707 states and 246391 transitions. [2021-05-22 01:57:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:57:56,691 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:56,691 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:56,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-22 01:57:56,692 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:56,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1828753721, now seen corresponding path program 1 times [2021-05-22 01:57:56,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:56,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596724650] [2021-05-22 01:57:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:56,725 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 01:57:56,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:56,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596724650] [2021-05-22 01:57:56,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596724650] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:56,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:56,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:57:56,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175155088] [2021-05-22 01:57:56,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:57:56,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:56,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:57:56,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:56,727 INFO L87 Difference]: Start difference. First operand 43707 states and 246391 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:57,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:57,409 INFO L93 Difference]: Finished difference Result 34230 states and 187342 transitions. [2021-05-22 01:57:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:57:57,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:57:57,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:57,715 INFO L225 Difference]: With dead ends: 34230 [2021-05-22 01:57:57,715 INFO L226 Difference]: Without dead ends: 34230 [2021-05-22 01:57:57,716 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34230 states. [2021-05-22 01:57:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34230 to 34230. [2021-05-22 01:57:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34230 states, 34229 states have (on average 5.473195243799117) internal successors, (187342), 34229 states have internal predecessors, (187342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34230 states to 34230 states and 187342 transitions. [2021-05-22 01:57:59,744 INFO L78 Accepts]: Start accepts. Automaton has 34230 states and 187342 transitions. Word has length 33 [2021-05-22 01:57:59,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:59,744 INFO L482 AbstractCegarLoop]: Abstraction has 34230 states and 187342 transitions. [2021-05-22 01:57:59,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 34230 states and 187342 transitions. [2021-05-22 01:57:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:57:59,817 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:59,817 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, 1, 1, 1, 1] [2021-05-22 01:57:59,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-22 01:57:59,817 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:59,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:59,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1417363893, now seen corresponding path program 1 times [2021-05-22 01:57:59,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:59,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453580494] [2021-05-22 01:57:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:59,843 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 01:57:59,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:59,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453580494] [2021-05-22 01:57:59,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453580494] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:59,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:59,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:57:59,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99557711] [2021-05-22 01:57:59,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:57:59,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:59,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:57:59,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:59,845 INFO L87 Difference]: Start difference. First operand 34230 states and 187342 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:00,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:00,423 INFO L93 Difference]: Finished difference Result 24672 states and 133261 transitions. [2021-05-22 01:58:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:58:00,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:00,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:00,517 INFO L225 Difference]: With dead ends: 24672 [2021-05-22 01:58:00,517 INFO L226 Difference]: Without dead ends: 24672 [2021-05-22 01:58:00,517 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:58:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24672 states. [2021-05-22 01:58:02,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24672 to 24672. [2021-05-22 01:58:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24672 states, 24671 states have (on average 5.401524056584654) internal successors, (133261), 24671 states have internal predecessors, (133261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24672 states to 24672 states and 133261 transitions. [2021-05-22 01:58:02,196 INFO L78 Accepts]: Start accepts. Automaton has 24672 states and 133261 transitions. Word has length 33 [2021-05-22 01:58:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:02,196 INFO L482 AbstractCegarLoop]: Abstraction has 24672 states and 133261 transitions. [2021-05-22 01:58:02,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 24672 states and 133261 transitions. [2021-05-22 01:58:02,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:02,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:02,252 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, 1, 1, 1, 1] [2021-05-22 01:58:02,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-22 01:58:02,252 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:02,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:02,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1862524909, now seen corresponding path program 1 times [2021-05-22 01:58:02,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:02,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586866217] [2021-05-22 01:58:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:02,274 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 01:58:02,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:02,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586866217] [2021-05-22 01:58:02,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586866217] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:02,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:02,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:58:02,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813017362] [2021-05-22 01:58:02,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:58:02,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:02,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:58:02,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:58:02,276 INFO L87 Difference]: Start difference. First operand 24672 states and 133261 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:02,399 INFO L93 Difference]: Finished difference Result 17820 states and 95581 transitions. [2021-05-22 01:58:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:58:02,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:02,457 INFO L225 Difference]: With dead ends: 17820 [2021-05-22 01:58:02,458 INFO L226 Difference]: Without dead ends: 17820 [2021-05-22 01:58:02,458 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:58:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17820 states. [2021-05-22 01:58:03,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17820 to 17820. [2021-05-22 01:58:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17820 states, 17819 states have (on average 5.363993490094843) internal successors, (95581), 17819 states have internal predecessors, (95581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17820 states to 17820 states and 95581 transitions. [2021-05-22 01:58:03,758 INFO L78 Accepts]: Start accepts. Automaton has 17820 states and 95581 transitions. Word has length 33 [2021-05-22 01:58:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:03,758 INFO L482 AbstractCegarLoop]: Abstraction has 17820 states and 95581 transitions. [2021-05-22 01:58:03,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand 17820 states and 95581 transitions. [2021-05-22 01:58:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:03,793 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:03,793 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:03,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-22 01:58:03,793 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:03,794 INFO L82 PathProgramCache]: Analyzing trace with hash -757244133, now seen corresponding path program 1 times [2021-05-22 01:58:03,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:03,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618843135] [2021-05-22 01:58:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:03,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:03,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618843135] [2021-05-22 01:58:03,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618843135] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:03,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:03,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:58:03,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001627445] [2021-05-22 01:58:03,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:58:03,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:03,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:58:03,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:58:03,827 INFO L87 Difference]: Start difference. First operand 17820 states and 95581 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:03,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:03,908 INFO L93 Difference]: Finished difference Result 13122 states and 69985 transitions. [2021-05-22 01:58:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:58:03,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:03,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:03,951 INFO L225 Difference]: With dead ends: 13122 [2021-05-22 01:58:03,951 INFO L226 Difference]: Without dead ends: 13122 [2021-05-22 01:58:03,951 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:58:04,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13122 states. [2021-05-22 01:58:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13122 to 13122. [2021-05-22 01:58:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13122 states, 13121 states have (on average 5.333816020120418) internal successors, (69985), 13121 states have internal predecessors, (69985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:05,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13122 states to 13122 states and 69985 transitions. [2021-05-22 01:58:05,034 INFO L78 Accepts]: Start accepts. Automaton has 13122 states and 69985 transitions. Word has length 33 [2021-05-22 01:58:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:05,034 INFO L482 AbstractCegarLoop]: Abstraction has 13122 states and 69985 transitions. [2021-05-22 01:58:05,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:05,034 INFO L276 IsEmpty]: Start isEmpty. Operand 13122 states and 69985 transitions. [2021-05-22 01:58:05,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:05,061 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:05,061 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:05,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-22 01:58:05,061 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:05,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:05,062 INFO L82 PathProgramCache]: Analyzing trace with hash 9427259, now seen corresponding path program 1 times [2021-05-22 01:58:05,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:05,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488144150] [2021-05-22 01:58:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:05,352 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-22 01:58:05,828 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 01:58:05,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:05,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488144150] [2021-05-22 01:58:05,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488144150] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:05,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:05,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:05,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630801875] [2021-05-22 01:58:05,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:05,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:05,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:05,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:05,831 INFO L87 Difference]: Start difference. First operand 13122 states and 69985 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:06,358 INFO L93 Difference]: Finished difference Result 31785 states and 159982 transitions. [2021-05-22 01:58:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:06,358 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:06,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:06,533 INFO L225 Difference]: With dead ends: 31785 [2021-05-22 01:58:06,536 INFO L226 Difference]: Without dead ends: 31026 [2021-05-22 01:58:06,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 457.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:07,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31026 states. [2021-05-22 01:58:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31026 to 13439. [2021-05-22 01:58:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13439 states, 13438 states have (on average 5.328471498734931) internal successors, (71604), 13438 states have internal predecessors, (71604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13439 states to 13439 states and 71604 transitions. [2021-05-22 01:58:08,210 INFO L78 Accepts]: Start accepts. Automaton has 13439 states and 71604 transitions. Word has length 33 [2021-05-22 01:58:08,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:08,212 INFO L482 AbstractCegarLoop]: Abstraction has 13439 states and 71604 transitions. [2021-05-22 01:58:08,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:08,212 INFO L276 IsEmpty]: Start isEmpty. Operand 13439 states and 71604 transitions. [2021-05-22 01:58:08,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:08,248 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:08,249 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, 1, 1, 1, 1] [2021-05-22 01:58:08,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-22 01:58:08,249 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:08,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:08,250 INFO L82 PathProgramCache]: Analyzing trace with hash -837369703, now seen corresponding path program 2 times [2021-05-22 01:58:08,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:08,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220920072] [2021-05-22 01:58:08,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:08,715 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 01:58:08,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:08,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220920072] [2021-05-22 01:58:08,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220920072] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:08,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:08,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:08,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290332109] [2021-05-22 01:58:08,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:08,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:08,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:08,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:08,719 INFO L87 Difference]: Start difference. First operand 13439 states and 71604 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:09,088 INFO L93 Difference]: Finished difference Result 31777 states and 159834 transitions. [2021-05-22 01:58:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:09,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:09,207 INFO L225 Difference]: With dead ends: 31777 [2021-05-22 01:58:09,207 INFO L226 Difference]: Without dead ends: 30906 [2021-05-22 01:58:09,207 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 360.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30906 states. [2021-05-22 01:58:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30906 to 13319. [2021-05-22 01:58:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13319 states, 13318 states have (on average 5.335035290584171) internal successors, (71052), 13318 states have internal predecessors, (71052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 71052 transitions. [2021-05-22 01:58:10,394 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 71052 transitions. Word has length 33 [2021-05-22 01:58:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:10,394 INFO L482 AbstractCegarLoop]: Abstraction has 13319 states and 71052 transitions. [2021-05-22 01:58:10,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 71052 transitions. [2021-05-22 01:58:10,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:10,422 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:10,422 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, 1, 1, 1, 1] [2021-05-22 01:58:10,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-22 01:58:10,422 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:10,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:10,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1760821563, now seen corresponding path program 3 times [2021-05-22 01:58:10,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:10,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643337732] [2021-05-22 01:58:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:10,720 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 01:58:10,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:10,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643337732] [2021-05-22 01:58:10,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643337732] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:10,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:10,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:10,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931301293] [2021-05-22 01:58:10,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:10,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:10,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:10,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:10,722 INFO L87 Difference]: Start difference. First operand 13319 states and 71052 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:11,270 INFO L93 Difference]: Finished difference Result 31996 states and 160881 transitions. [2021-05-22 01:58:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:11,270 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:11,371 INFO L225 Difference]: With dead ends: 31996 [2021-05-22 01:58:11,371 INFO L226 Difference]: Without dead ends: 31237 [2021-05-22 01:58:11,372 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 289.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31237 states. [2021-05-22 01:58:12,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31237 to 13507. [2021-05-22 01:58:12,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13507 states, 13506 states have (on average 5.321782911298682) internal successors, (71876), 13506 states have internal predecessors, (71876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:12,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 71876 transitions. [2021-05-22 01:58:12,604 INFO L78 Accepts]: Start accepts. Automaton has 13507 states and 71876 transitions. Word has length 33 [2021-05-22 01:58:12,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:12,604 INFO L482 AbstractCegarLoop]: Abstraction has 13507 states and 71876 transitions. [2021-05-22 01:58:12,604 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:12,604 INFO L276 IsEmpty]: Start isEmpty. Operand 13507 states and 71876 transitions. [2021-05-22 01:58:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:12,632 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:12,632 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, 1, 1, 1, 1] [2021-05-22 01:58:12,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-22 01:58:12,633 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:12,633 INFO L82 PathProgramCache]: Analyzing trace with hash -146065093, now seen corresponding path program 4 times [2021-05-22 01:58:12,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:12,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284197390] [2021-05-22 01:58:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:12,935 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 01:58:12,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:12,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284197390] [2021-05-22 01:58:12,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284197390] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:12,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:12,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:12,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190507531] [2021-05-22 01:58:12,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:12,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:12,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:12,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:12,938 INFO L87 Difference]: Start difference. First operand 13507 states and 71876 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:13,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:13,234 INFO L93 Difference]: Finished difference Result 32131 states and 161352 transitions. [2021-05-22 01:58:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:13,234 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:13,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:13,335 INFO L225 Difference]: With dead ends: 32131 [2021-05-22 01:58:13,335 INFO L226 Difference]: Without dead ends: 31049 [2021-05-22 01:58:13,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 242.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:14,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31049 states. [2021-05-22 01:58:14,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31049 to 13319. [2021-05-22 01:58:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13319 states, 13318 states have (on average 5.328127346448416) internal successors, (70960), 13318 states have internal predecessors, (70960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 70960 transitions. [2021-05-22 01:58:14,579 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 70960 transitions. Word has length 33 [2021-05-22 01:58:14,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:14,579 INFO L482 AbstractCegarLoop]: Abstraction has 13319 states and 70960 transitions. [2021-05-22 01:58:14,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:14,580 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 70960 transitions. [2021-05-22 01:58:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:14,606 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:14,606 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, 1, 1, 1, 1] [2021-05-22 01:58:14,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-22 01:58:14,607 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:14,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:14,607 INFO L82 PathProgramCache]: Analyzing trace with hash 904073497, now seen corresponding path program 5 times [2021-05-22 01:58:14,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:14,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586712212] [2021-05-22 01:58:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:14,858 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 01:58:14,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:14,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586712212] [2021-05-22 01:58:14,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586712212] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:14,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:14,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:14,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30260601] [2021-05-22 01:58:14,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:14,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:14,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:14,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:14,860 INFO L87 Difference]: Start difference. First operand 13319 states and 70960 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:15,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:15,134 INFO L93 Difference]: Finished difference Result 31976 states and 160717 transitions. [2021-05-22 01:58:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:15,134 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:15,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:15,237 INFO L225 Difference]: With dead ends: 31976 [2021-05-22 01:58:15,237 INFO L226 Difference]: Without dead ends: 31225 [2021-05-22 01:58:15,237 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 254.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31225 states. [2021-05-22 01:58:16,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31225 to 13503. [2021-05-22 01:58:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13503 states, 13502 states have (on average 5.315656939712635) internal successors, (71772), 13502 states have internal predecessors, (71772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71772 transitions. [2021-05-22 01:58:16,507 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71772 transitions. Word has length 33 [2021-05-22 01:58:16,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:16,508 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71772 transitions. [2021-05-22 01:58:16,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:16,508 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71772 transitions. [2021-05-22 01:58:16,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:16,537 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:16,537 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:16,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-22 01:58:16,537 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:16,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:16,537 INFO L82 PathProgramCache]: Analyzing trace with hash 286550139, now seen corresponding path program 6 times [2021-05-22 01:58:16,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:16,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365257269] [2021-05-22 01:58:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:16,790 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 01:58:16,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:16,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365257269] [2021-05-22 01:58:16,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365257269] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:16,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:16,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:16,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607317856] [2021-05-22 01:58:16,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:16,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:16,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:16,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:16,794 INFO L87 Difference]: Start difference. First operand 13503 states and 71772 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:17,312 INFO L93 Difference]: Finished difference Result 32119 states and 161220 transitions. [2021-05-22 01:58:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:17,415 INFO L225 Difference]: With dead ends: 32119 [2021-05-22 01:58:17,415 INFO L226 Difference]: Without dead ends: 30949 [2021-05-22 01:58:17,416 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 228.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:18,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30949 states. [2021-05-22 01:58:18,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30949 to 13227. [2021-05-22 01:58:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13227 states, 13226 states have (on average 5.334643883260245) internal successors, (70556), 13226 states have internal predecessors, (70556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:18,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 70556 transitions. [2021-05-22 01:58:18,660 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 70556 transitions. Word has length 33 [2021-05-22 01:58:18,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:18,660 INFO L482 AbstractCegarLoop]: Abstraction has 13227 states and 70556 transitions. [2021-05-22 01:58:18,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 70556 transitions. [2021-05-22 01:58:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:18,689 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:18,689 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, 1, 1, 1, 1] [2021-05-22 01:58:18,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-22 01:58:18,689 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:18,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:18,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1370978785, now seen corresponding path program 7 times [2021-05-22 01:58:18,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:18,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329748838] [2021-05-22 01:58:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:18,917 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 01:58:18,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:18,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329748838] [2021-05-22 01:58:18,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329748838] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:18,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:18,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:18,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22506413] [2021-05-22 01:58:18,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:18,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:18,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:18,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:18,919 INFO L87 Difference]: Start difference. First operand 13227 states and 70556 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:19,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:19,280 INFO L93 Difference]: Finished difference Result 31442 states and 158327 transitions. [2021-05-22 01:58:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:19,281 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:19,386 INFO L225 Difference]: With dead ends: 31442 [2021-05-22 01:58:19,386 INFO L226 Difference]: Without dead ends: 30683 [2021-05-22 01:58:19,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 226.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30683 states. [2021-05-22 01:58:20,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30683 to 13403. [2021-05-22 01:58:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13403 states, 13402 states have (on average 5.324876884047157) internal successors, (71364), 13402 states have internal predecessors, (71364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13403 states to 13403 states and 71364 transitions. [2021-05-22 01:58:20,614 INFO L78 Accepts]: Start accepts. Automaton has 13403 states and 71364 transitions. Word has length 33 [2021-05-22 01:58:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:20,614 INFO L482 AbstractCegarLoop]: Abstraction has 13403 states and 71364 transitions. [2021-05-22 01:58:20,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 13403 states and 71364 transitions. [2021-05-22 01:58:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:20,642 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:20,642 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, 1, 1, 1, 1] [2021-05-22 01:58:20,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-22 01:58:20,643 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:20,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:20,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2077191549, now seen corresponding path program 8 times [2021-05-22 01:58:20,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:20,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939260229] [2021-05-22 01:58:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:20,852 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 01:58:20,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:20,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939260229] [2021-05-22 01:58:20,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939260229] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:20,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:20,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:20,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158256401] [2021-05-22 01:58:20,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:20,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:20,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:20,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:20,854 INFO L87 Difference]: Start difference. First operand 13403 states and 71364 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:21,115 INFO L93 Difference]: Finished difference Result 31434 states and 158179 transitions. [2021-05-22 01:58:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:21,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:21,221 INFO L225 Difference]: With dead ends: 31434 [2021-05-22 01:58:21,222 INFO L226 Difference]: Without dead ends: 30563 [2021-05-22 01:58:21,222 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 217.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:22,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30563 states. [2021-05-22 01:58:22,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30563 to 13283. [2021-05-22 01:58:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13283 states, 13282 states have (on average 5.3317271495256735) internal successors, (70816), 13282 states have internal predecessors, (70816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 70816 transitions. [2021-05-22 01:58:22,445 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 70816 transitions. Word has length 33 [2021-05-22 01:58:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:22,445 INFO L482 AbstractCegarLoop]: Abstraction has 13283 states and 70816 transitions. [2021-05-22 01:58:22,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 70816 transitions. [2021-05-22 01:58:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:22,478 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:22,479 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, 1, 1, 1, 1] [2021-05-22 01:58:22,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-22 01:58:22,479 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:22,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:22,479 INFO L82 PathProgramCache]: Analyzing trace with hash 900926973, now seen corresponding path program 9 times [2021-05-22 01:58:22,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:22,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691819938] [2021-05-22 01:58:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:22,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:22,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691819938] [2021-05-22 01:58:22,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691819938] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:22,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:22,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:22,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234910620] [2021-05-22 01:58:22,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:22,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:22,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:22,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:22,670 INFO L87 Difference]: Start difference. First operand 13283 states and 70816 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:23,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:23,188 INFO L93 Difference]: Finished difference Result 31418 states and 158171 transitions. [2021-05-22 01:58:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:23,189 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:23,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:23,287 INFO L225 Difference]: With dead ends: 31418 [2021-05-22 01:58:23,287 INFO L226 Difference]: Without dead ends: 30659 [2021-05-22 01:58:23,288 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 194.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30659 states. [2021-05-22 01:58:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30659 to 13395. [2021-05-22 01:58:24,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13395 states, 13394 states have (on average 5.321785874272062) internal successors, (71280), 13394 states have internal predecessors, (71280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71280 transitions. [2021-05-22 01:58:24,537 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71280 transitions. Word has length 33 [2021-05-22 01:58:24,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:24,537 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71280 transitions. [2021-05-22 01:58:24,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:24,537 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71280 transitions. [2021-05-22 01:58:24,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:24,566 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:24,566 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:24,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-22 01:58:24,566 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:24,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:24,567 INFO L82 PathProgramCache]: Analyzing trace with hash 104900093, now seen corresponding path program 10 times [2021-05-22 01:58:24,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:24,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106994220] [2021-05-22 01:58:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:24,774 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 01:58:24,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:24,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106994220] [2021-05-22 01:58:24,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106994220] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:24,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:24,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:24,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494172280] [2021-05-22 01:58:24,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:24,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:24,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:24,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:24,776 INFO L87 Difference]: Start difference. First operand 13395 states and 71280 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:25,082 INFO L93 Difference]: Finished difference Result 31394 states and 157967 transitions. [2021-05-22 01:58:25,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:25,187 INFO L225 Difference]: With dead ends: 31394 [2021-05-22 01:58:25,187 INFO L226 Difference]: Without dead ends: 30547 [2021-05-22 01:58:25,187 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 211.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30547 states. [2021-05-22 01:58:26,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30547 to 13283. [2021-05-22 01:58:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13283 states, 13282 states have (on average 5.327510917030568) internal successors, (70760), 13282 states have internal predecessors, (70760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 70760 transitions. [2021-05-22 01:58:26,399 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 70760 transitions. Word has length 33 [2021-05-22 01:58:26,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:26,400 INFO L482 AbstractCegarLoop]: Abstraction has 13283 states and 70760 transitions. [2021-05-22 01:58:26,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:26,400 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 70760 transitions. [2021-05-22 01:58:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:26,427 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:26,427 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, 1, 1, 1, 1] [2021-05-22 01:58:26,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-22 01:58:26,427 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:26,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:26,427 INFO L82 PathProgramCache]: Analyzing trace with hash 44178907, now seen corresponding path program 11 times [2021-05-22 01:58:26,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:26,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182578523] [2021-05-22 01:58:26,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:26,617 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 01:58:26,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:26,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182578523] [2021-05-22 01:58:26,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182578523] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:26,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:26,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:26,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17784306] [2021-05-22 01:58:26,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:26,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:26,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:26,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:26,620 INFO L87 Difference]: Start difference. First operand 13283 states and 70760 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:26,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:26,889 INFO L93 Difference]: Finished difference Result 31402 states and 158059 transitions. [2021-05-22 01:58:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:26,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:26,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:26,990 INFO L225 Difference]: With dead ends: 31402 [2021-05-22 01:58:26,990 INFO L226 Difference]: Without dead ends: 30651 [2021-05-22 01:58:26,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 212.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30651 states. [2021-05-22 01:58:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30651 to 13395. [2021-05-22 01:58:28,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13395 states, 13394 states have (on average 5.317604897715395) internal successors, (71224), 13394 states have internal predecessors, (71224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71224 transitions. [2021-05-22 01:58:28,205 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71224 transitions. Word has length 33 [2021-05-22 01:58:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:28,205 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71224 transitions. [2021-05-22 01:58:28,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71224 transitions. [2021-05-22 01:58:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:28,232 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:28,232 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, 1, 1, 1, 1] [2021-05-22 01:58:28,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-22 01:58:28,233 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:28,233 INFO L82 PathProgramCache]: Analyzing trace with hash -436723139, now seen corresponding path program 12 times [2021-05-22 01:58:28,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:28,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928960776] [2021-05-22 01:58:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:28,450 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 01:58:28,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:28,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928960776] [2021-05-22 01:58:28,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928960776] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:28,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:28,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:28,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195972387] [2021-05-22 01:58:28,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:28,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:28,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:28,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:28,453 INFO L87 Difference]: Start difference. First operand 13395 states and 71224 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:28,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:28,723 INFO L93 Difference]: Finished difference Result 31386 states and 157883 transitions. [2021-05-22 01:58:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:28,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:28,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:29,141 INFO L225 Difference]: With dead ends: 31386 [2021-05-22 01:58:29,141 INFO L226 Difference]: Without dead ends: 30483 [2021-05-22 01:58:29,141 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 216.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:29,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30483 states. [2021-05-22 01:58:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30483 to 13227. [2021-05-22 01:58:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13227 states, 13226 states have (on average 5.332526841070618) internal successors, (70528), 13226 states have internal predecessors, (70528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 70528 transitions. [2021-05-22 01:58:30,146 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 70528 transitions. Word has length 33 [2021-05-22 01:58:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:30,146 INFO L482 AbstractCegarLoop]: Abstraction has 13227 states and 70528 transitions. [2021-05-22 01:58:30,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 70528 transitions. [2021-05-22 01:58:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:30,173 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:30,173 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, 1, 1, 1, 1] [2021-05-22 01:58:30,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-22 01:58:30,173 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:30,173 INFO L82 PathProgramCache]: Analyzing trace with hash -392502437, now seen corresponding path program 13 times [2021-05-22 01:58:30,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:30,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359929946] [2021-05-22 01:58:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:30,400 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 01:58:30,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:30,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359929946] [2021-05-22 01:58:30,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359929946] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:30,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:30,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:30,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417010947] [2021-05-22 01:58:30,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:30,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:30,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:30,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:30,402 INFO L87 Difference]: Start difference. First operand 13227 states and 70528 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:30,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:30,868 INFO L93 Difference]: Finished difference Result 31725 states and 159654 transitions. [2021-05-22 01:58:30,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:30,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:30,973 INFO L225 Difference]: With dead ends: 31725 [2021-05-22 01:58:30,974 INFO L226 Difference]: Without dead ends: 30966 [2021-05-22 01:58:30,974 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 246.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30966 states. [2021-05-22 01:58:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30966 to 13427. [2021-05-22 01:58:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 13426 states have (on average 5.32429614181439) internal successors, (71484), 13426 states have internal predecessors, (71484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 71484 transitions. [2021-05-22 01:58:32,214 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 71484 transitions. Word has length 33 [2021-05-22 01:58:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:32,215 INFO L482 AbstractCegarLoop]: Abstraction has 13427 states and 71484 transitions. [2021-05-22 01:58:32,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 71484 transitions. [2021-05-22 01:58:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:32,242 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:32,242 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, 1, 1, 1, 1] [2021-05-22 01:58:32,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-22 01:58:32,242 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:32,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:32,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1188529317, now seen corresponding path program 14 times [2021-05-22 01:58:32,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:32,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835066737] [2021-05-22 01:58:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:32,451 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 01:58:32,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:32,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835066737] [2021-05-22 01:58:32,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835066737] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:32,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:32,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:32,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758691496] [2021-05-22 01:58:32,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:32,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:32,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:32,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:32,453 INFO L87 Difference]: Start difference. First operand 13427 states and 71484 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:32,741 INFO L93 Difference]: Finished difference Result 31701 states and 159450 transitions. [2021-05-22 01:58:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:32,742 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:32,839 INFO L225 Difference]: With dead ends: 31701 [2021-05-22 01:58:32,839 INFO L226 Difference]: Without dead ends: 30854 [2021-05-22 01:58:32,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 224.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:33,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30854 states. [2021-05-22 01:58:34,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30854 to 13315. [2021-05-22 01:58:34,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 5.330028541385008) internal successors, (70964), 13314 states have internal predecessors, (70964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:34,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70964 transitions. [2021-05-22 01:58:34,098 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70964 transitions. Word has length 33 [2021-05-22 01:58:34,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:34,098 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70964 transitions. [2021-05-22 01:58:34,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:34,098 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70964 transitions. [2021-05-22 01:58:34,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:34,125 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:34,125 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, 1, 1, 1, 1] [2021-05-22 01:58:34,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-22 01:58:34,125 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:34,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:34,125 INFO L82 PathProgramCache]: Analyzing trace with hash -818478403, now seen corresponding path program 15 times [2021-05-22 01:58:34,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:34,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559301713] [2021-05-22 01:58:34,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:34,356 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 01:58:34,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:34,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559301713] [2021-05-22 01:58:34,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559301713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:34,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:34,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:34,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565062757] [2021-05-22 01:58:34,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:34,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:34,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:34,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:34,360 INFO L87 Difference]: Start difference. First operand 13315 states and 70964 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:34,632 INFO L93 Difference]: Finished difference Result 31960 states and 160657 transitions. [2021-05-22 01:58:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:34,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:34,734 INFO L225 Difference]: With dead ends: 31960 [2021-05-22 01:58:34,734 INFO L226 Difference]: Without dead ends: 31201 [2021-05-22 01:58:34,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 255.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:35,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31201 states. [2021-05-22 01:58:35,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31201 to 13503. [2021-05-22 01:58:35,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13503 states, 13502 states have (on average 5.316841949340838) internal successors, (71788), 13502 states have internal predecessors, (71788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71788 transitions. [2021-05-22 01:58:36,031 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71788 transitions. Word has length 33 [2021-05-22 01:58:36,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:36,032 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71788 transitions. [2021-05-22 01:58:36,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71788 transitions. [2021-05-22 01:58:36,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:36,059 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:36,059 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:36,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-22 01:58:36,060 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:36,060 INFO L82 PathProgramCache]: Analyzing trace with hash -388777125, now seen corresponding path program 16 times [2021-05-22 01:58:36,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:36,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738811689] [2021-05-22 01:58:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:36,296 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 01:58:36,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:36,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738811689] [2021-05-22 01:58:36,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738811689] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:36,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:36,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:36,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328898309] [2021-05-22 01:58:36,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:36,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:36,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:36,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:36,298 INFO L87 Difference]: Start difference. First operand 13503 states and 71788 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:36,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:36,763 INFO L93 Difference]: Finished difference Result 32095 states and 161128 transitions. [2021-05-22 01:58:36,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:36,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:36,891 INFO L225 Difference]: With dead ends: 32095 [2021-05-22 01:58:36,891 INFO L226 Difference]: Without dead ends: 31013 [2021-05-22 01:58:36,891 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 216.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31013 states. [2021-05-22 01:58:37,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31013 to 13315. [2021-05-22 01:58:37,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 5.323418957488358) internal successors, (70876), 13314 states have internal predecessors, (70876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70876 transitions. [2021-05-22 01:58:37,964 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70876 transitions. Word has length 33 [2021-05-22 01:58:37,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:37,964 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70876 transitions. [2021-05-22 01:58:37,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:37,964 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70876 transitions. [2021-05-22 01:58:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:38,000 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:38,000 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, 1, 1, 1, 1] [2021-05-22 01:58:38,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-22 01:58:38,000 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:38,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:38,001 INFO L82 PathProgramCache]: Analyzing trace with hash 244429659, now seen corresponding path program 17 times [2021-05-22 01:58:38,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:38,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642311736] [2021-05-22 01:58:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:38,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:38,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642311736] [2021-05-22 01:58:38,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642311736] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:38,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:38,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:38,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116924707] [2021-05-22 01:58:38,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:38,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:38,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:38,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:38,405 INFO L87 Difference]: Start difference. First operand 13315 states and 70876 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:38,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:38,652 INFO L93 Difference]: Finished difference Result 31900 states and 160333 transitions. [2021-05-22 01:58:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:38,652 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:38,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:38,754 INFO L225 Difference]: With dead ends: 31900 [2021-05-22 01:58:38,754 INFO L226 Difference]: Without dead ends: 31165 [2021-05-22 01:58:38,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 408.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31165 states. [2021-05-22 01:58:39,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31165 to 13491. [2021-05-22 01:58:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13491 states, 13490 states have (on average 5.312083024462565) internal successors, (71660), 13490 states have internal predecessors, (71660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71660 transitions. [2021-05-22 01:58:39,949 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71660 transitions. Word has length 33 [2021-05-22 01:58:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:39,949 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71660 transitions. [2021-05-22 01:58:39,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:39,949 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71660 transitions. [2021-05-22 01:58:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:39,976 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:39,976 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, 1, 1, 1, 1] [2021-05-22 01:58:39,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-22 01:58:39,976 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:39,977 INFO L82 PathProgramCache]: Analyzing trace with hash 319963965, now seen corresponding path program 18 times [2021-05-22 01:58:39,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:39,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415947174] [2021-05-22 01:58:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:40,193 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 01:58:40,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:40,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415947174] [2021-05-22 01:58:40,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415947174] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:40,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:40,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:40,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174314007] [2021-05-22 01:58:40,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:40,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:40,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:40,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:40,194 INFO L87 Difference]: Start difference. First operand 13491 states and 71660 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:40,410 INFO L93 Difference]: Finished difference Result 32059 states and 160908 transitions. [2021-05-22 01:58:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:40,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:40,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:40,508 INFO L225 Difference]: With dead ends: 32059 [2021-05-22 01:58:40,508 INFO L226 Difference]: Without dead ends: 30901 [2021-05-22 01:58:40,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 204.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30901 states. [2021-05-22 01:58:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30901 to 13227. [2021-05-22 01:58:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13227 states, 13226 states have (on average 5.32920006048692) internal successors, (70484), 13226 states have internal predecessors, (70484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 70484 transitions. [2021-05-22 01:58:41,685 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 70484 transitions. Word has length 33 [2021-05-22 01:58:41,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:41,685 INFO L482 AbstractCegarLoop]: Abstraction has 13227 states and 70484 transitions. [2021-05-22 01:58:41,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:41,685 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 70484 transitions. [2021-05-22 01:58:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:41,712 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:41,712 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:41,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-22 01:58:41,712 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:41,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:41,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2072640441, now seen corresponding path program 19 times [2021-05-22 01:58:41,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:41,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811717190] [2021-05-22 01:58:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:41,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:41,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811717190] [2021-05-22 01:58:41,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811717190] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:41,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:41,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:41,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057954586] [2021-05-22 01:58:41,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:41,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:41,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:41,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:41,912 INFO L87 Difference]: Start difference. First operand 13227 states and 70484 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:42,137 INFO L93 Difference]: Finished difference Result 31697 states and 159510 transitions. [2021-05-22 01:58:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:42,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:42,235 INFO L225 Difference]: With dead ends: 31697 [2021-05-22 01:58:42,236 INFO L226 Difference]: Without dead ends: 30946 [2021-05-22 01:58:42,236 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 210.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30946 states. [2021-05-22 01:58:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30946 to 13427. [2021-05-22 01:58:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 13426 states have (on average 5.3210189185163115) internal successors, (71440), 13426 states have internal predecessors, (71440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 71440 transitions. [2021-05-22 01:58:43,498 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 71440 transitions. Word has length 33 [2021-05-22 01:58:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:43,499 INFO L482 AbstractCegarLoop]: Abstraction has 13427 states and 71440 transitions. [2021-05-22 01:58:43,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 71440 transitions. [2021-05-22 01:58:43,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:43,526 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:43,526 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, 1, 1, 1, 1] [2021-05-22 01:58:43,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-22 01:58:43,527 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:43,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:43,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1591738395, now seen corresponding path program 20 times [2021-05-22 01:58:43,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:43,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348764109] [2021-05-22 01:58:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:43,728 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 01:58:43,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:43,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348764109] [2021-05-22 01:58:43,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348764109] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:43,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:43,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:43,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908158040] [2021-05-22 01:58:43,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:43,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:43,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:43,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:43,729 INFO L87 Difference]: Start difference. First operand 13427 states and 71440 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:44,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:44,196 INFO L93 Difference]: Finished difference Result 31681 states and 159334 transitions. [2021-05-22 01:58:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:44,197 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:44,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:44,305 INFO L225 Difference]: With dead ends: 31681 [2021-05-22 01:58:44,305 INFO L226 Difference]: Without dead ends: 30834 [2021-05-22 01:58:44,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 205.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:44,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30834 states. [2021-05-22 01:58:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30834 to 13315. [2021-05-22 01:58:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 5.326723749436683) internal successors, (70920), 13314 states have internal predecessors, (70920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70920 transitions. [2021-05-22 01:58:45,329 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70920 transitions. Word has length 33 [2021-05-22 01:58:45,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:45,329 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70920 transitions. [2021-05-22 01:58:45,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:45,329 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70920 transitions. [2021-05-22 01:58:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:45,356 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:45,356 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:45,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-22 01:58:45,356 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:45,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1646664475, now seen corresponding path program 21 times [2021-05-22 01:58:45,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:45,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615103941] [2021-05-22 01:58:45,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:45,674 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-05-22 01:58:45,734 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 01:58:45,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:45,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615103941] [2021-05-22 01:58:45,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615103941] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:45,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:45,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:45,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817258140] [2021-05-22 01:58:45,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:45,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:45,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:45,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:45,736 INFO L87 Difference]: Start difference. First operand 13315 states and 70920 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:46,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:46,003 INFO L93 Difference]: Finished difference Result 31928 states and 160497 transitions. [2021-05-22 01:58:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:46,004 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:46,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:46,105 INFO L225 Difference]: With dead ends: 31928 [2021-05-22 01:58:46,106 INFO L226 Difference]: Without dead ends: 31177 [2021-05-22 01:58:46,106 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 387.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31177 states. [2021-05-22 01:58:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31177 to 13499. [2021-05-22 01:58:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13499 states, 13498 states have (on average 5.314268780560083) internal successors, (71732), 13498 states have internal predecessors, (71732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13499 states to 13499 states and 71732 transitions. [2021-05-22 01:58:47,328 INFO L78 Accepts]: Start accepts. Automaton has 13499 states and 71732 transitions. Word has length 33 [2021-05-22 01:58:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:47,328 INFO L482 AbstractCegarLoop]: Abstraction has 13499 states and 71732 transitions. [2021-05-22 01:58:47,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 13499 states and 71732 transitions. [2021-05-22 01:58:47,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:47,356 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:47,356 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:47,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-22 01:58:47,356 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:47,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:47,356 INFO L82 PathProgramCache]: Analyzing trace with hash -929238245, now seen corresponding path program 22 times [2021-05-22 01:58:47,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:47,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547082996] [2021-05-22 01:58:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:47,584 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 01:58:47,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:47,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547082996] [2021-05-22 01:58:47,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547082996] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:47,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:47,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:47,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856624204] [2021-05-22 01:58:47,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:47,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:47,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:47,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:47,585 INFO L87 Difference]: Start difference. First operand 13499 states and 71732 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:47,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:47,810 INFO L93 Difference]: Finished difference Result 32071 states and 161000 transitions. [2021-05-22 01:58:47,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:47,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:47,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:47,912 INFO L225 Difference]: With dead ends: 32071 [2021-05-22 01:58:47,912 INFO L226 Difference]: Without dead ends: 30993 [2021-05-22 01:58:47,912 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 221.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30993 states. [2021-05-22 01:58:49,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30993 to 13315. [2021-05-22 01:58:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 5.3201141655400335) internal successors, (70832), 13314 states have internal predecessors, (70832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70832 transitions. [2021-05-22 01:58:49,168 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70832 transitions. Word has length 33 [2021-05-22 01:58:49,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:49,168 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70832 transitions. [2021-05-22 01:58:49,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:49,168 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70832 transitions. [2021-05-22 01:58:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:49,195 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:49,195 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:49,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-22 01:58:49,195 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash 857278205, now seen corresponding path program 23 times [2021-05-22 01:58:49,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:49,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798798622] [2021-05-22 01:58:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:49,389 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 01:58:49,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:49,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798798622] [2021-05-22 01:58:49,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798798622] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:49,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:49,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:49,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924340127] [2021-05-22 01:58:49,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:49,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:49,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:49,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:49,390 INFO L87 Difference]: Start difference. First operand 13315 states and 70832 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:49,622 INFO L93 Difference]: Finished difference Result 31888 states and 160245 transitions. [2021-05-22 01:58:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:49,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:49,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:49,720 INFO L225 Difference]: With dead ends: 31888 [2021-05-22 01:58:49,720 INFO L226 Difference]: Without dead ends: 31153 [2021-05-22 01:58:49,721 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 208.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31153 states. [2021-05-22 01:58:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31153 to 13491. [2021-05-22 01:58:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13491 states, 13490 states have (on average 5.308821349147516) internal successors, (71616), 13490 states have internal predecessors, (71616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71616 transitions. [2021-05-22 01:58:50,980 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71616 transitions. Word has length 33 [2021-05-22 01:58:50,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:50,980 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71616 transitions. [2021-05-22 01:58:50,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:50,980 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71616 transitions. [2021-05-22 01:58:51,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:51,007 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:51,007 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, 1, 1, 1, 1] [2021-05-22 01:58:51,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-22 01:58:51,007 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:51,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:51,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1096125605, now seen corresponding path program 24 times [2021-05-22 01:58:51,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:51,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753684455] [2021-05-22 01:58:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:51,223 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 01:58:51,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:51,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753684455] [2021-05-22 01:58:51,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753684455] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:51,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:51,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:51,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634065620] [2021-05-22 01:58:51,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:51,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:51,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:51,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:51,225 INFO L87 Difference]: Start difference. First operand 13491 states and 71616 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:51,498 INFO L93 Difference]: Finished difference Result 32047 states and 160820 transitions. [2021-05-22 01:58:51,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:51,498 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:51,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:51,915 INFO L225 Difference]: With dead ends: 32047 [2021-05-22 01:58:51,916 INFO L226 Difference]: Without dead ends: 30845 [2021-05-22 01:58:51,916 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 207.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:52,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30845 states. [2021-05-22 01:58:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30845 to 13183. [2021-05-22 01:58:52,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13183 states, 13182 states have (on average 5.333788499468973) internal successors, (70310), 13182 states have internal predecessors, (70310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 70310 transitions. [2021-05-22 01:58:52,927 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 70310 transitions. Word has length 33 [2021-05-22 01:58:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:52,927 INFO L482 AbstractCegarLoop]: Abstraction has 13183 states and 70310 transitions. [2021-05-22 01:58:52,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:52,927 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 70310 transitions. [2021-05-22 01:58:52,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:52,954 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:52,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:52,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-22 01:58:52,954 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:52,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:52,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1900453661, now seen corresponding path program 25 times [2021-05-22 01:58:52,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:52,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901668254] [2021-05-22 01:58:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:53,149 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 01:58:53,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:53,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901668254] [2021-05-22 01:58:53,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901668254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:53,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:53,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:53,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328522291] [2021-05-22 01:58:53,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:53,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:53,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:53,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:53,152 INFO L87 Difference]: Start difference. First operand 13183 states and 70310 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:53,669 INFO L93 Difference]: Finished difference Result 32010 states and 160923 transitions. [2021-05-22 01:58:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:53,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:53,773 INFO L225 Difference]: With dead ends: 32010 [2021-05-22 01:58:53,773 INFO L226 Difference]: Without dead ends: 31251 [2021-05-22 01:58:53,773 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 220.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:54,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31251 states. [2021-05-22 01:58:54,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31251 to 13457. [2021-05-22 01:58:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13457 states, 13456 states have (on average 5.32647146254459) internal successors, (71673), 13456 states have internal predecessors, (71673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13457 states to 13457 states and 71673 transitions. [2021-05-22 01:58:55,058 INFO L78 Accepts]: Start accepts. Automaton has 13457 states and 71673 transitions. Word has length 33 [2021-05-22 01:58:55,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:55,059 INFO L482 AbstractCegarLoop]: Abstraction has 13457 states and 71673 transitions. [2021-05-22 01:58:55,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 13457 states and 71673 transitions. [2021-05-22 01:58:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:55,087 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:55,087 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, 1, 1, 1, 1] [2021-05-22 01:58:55,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-22 01:58:55,087 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:55,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:55,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1053656699, now seen corresponding path program 26 times [2021-05-22 01:58:55,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:55,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743632808] [2021-05-22 01:58:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:55,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:55,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743632808] [2021-05-22 01:58:55,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743632808] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:55,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:55,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:55,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687610325] [2021-05-22 01:58:55,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:55,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:55,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:55,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:55,286 INFO L87 Difference]: Start difference. First operand 13457 states and 71673 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:55,513 INFO L93 Difference]: Finished difference Result 32002 states and 160775 transitions. [2021-05-22 01:58:55,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:55,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:55,612 INFO L225 Difference]: With dead ends: 32002 [2021-05-22 01:58:55,612 INFO L226 Difference]: Without dead ends: 31131 [2021-05-22 01:58:55,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 206.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:56,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31131 states. [2021-05-22 01:58:56,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31131 to 13337. [2021-05-22 01:58:56,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13337 states, 13336 states have (on average 5.333008398320336) internal successors, (71121), 13336 states have internal predecessors, (71121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13337 states to 13337 states and 71121 transitions. [2021-05-22 01:58:56,882 INFO L78 Accepts]: Start accepts. Automaton has 13337 states and 71121 transitions. Word has length 33 [2021-05-22 01:58:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:56,882 INFO L482 AbstractCegarLoop]: Abstraction has 13337 states and 71121 transitions. [2021-05-22 01:58:56,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 13337 states and 71121 transitions. [2021-05-22 01:58:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:56,910 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:56,910 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, 1, 1, 1, 1] [2021-05-22 01:58:56,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-22 01:58:56,910 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:56,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:56,911 INFO L82 PathProgramCache]: Analyzing trace with hash -643119331, now seen corresponding path program 27 times [2021-05-22 01:58:56,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:56,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785839293] [2021-05-22 01:58:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:57,133 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 01:58:57,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:57,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785839293] [2021-05-22 01:58:57,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785839293] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:57,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:57,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:57,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605532278] [2021-05-22 01:58:57,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:57,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:57,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:57,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:57,135 INFO L87 Difference]: Start difference. First operand 13337 states and 71121 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:57,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:57,436 INFO L93 Difference]: Finished difference Result 32221 states and 161822 transitions. [2021-05-22 01:58:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:57,436 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:57,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:57,560 INFO L225 Difference]: With dead ends: 32221 [2021-05-22 01:58:57,560 INFO L226 Difference]: Without dead ends: 31462 [2021-05-22 01:58:57,561 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 244.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:58:58,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31462 states. [2021-05-22 01:58:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31462 to 13525. [2021-05-22 01:58:58,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13525 states, 13524 states have (on average 5.319801833776989) internal successors, (71945), 13524 states have internal predecessors, (71945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13525 states to 13525 states and 71945 transitions. [2021-05-22 01:58:58,822 INFO L78 Accepts]: Start accepts. Automaton has 13525 states and 71945 transitions. Word has length 33 [2021-05-22 01:58:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:58,822 INFO L482 AbstractCegarLoop]: Abstraction has 13525 states and 71945 transitions. [2021-05-22 01:58:58,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 13525 states and 71945 transitions. [2021-05-22 01:58:58,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:58:58,850 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:58,850 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, 1, 1, 1, 1] [2021-05-22 01:58:58,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-22 01:58:58,850 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:58,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:58,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1744961309, now seen corresponding path program 28 times [2021-05-22 01:58:58,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:58,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379079784] [2021-05-22 01:58:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:59,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:59,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379079784] [2021-05-22 01:58:59,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379079784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:59,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:59,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:58:59,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335389376] [2021-05-22 01:58:59,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:58:59,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:59,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:58:59,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:59,034 INFO L87 Difference]: Start difference. First operand 13525 states and 71945 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:59,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:59,251 INFO L93 Difference]: Finished difference Result 32356 states and 162293 transitions. [2021-05-22 01:58:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:58:59,252 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:58:59,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:59,351 INFO L225 Difference]: With dead ends: 32356 [2021-05-22 01:58:59,351 INFO L226 Difference]: Without dead ends: 31274 [2021-05-22 01:58:59,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 178.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:00,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31274 states. [2021-05-22 01:59:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31274 to 13337. [2021-05-22 01:59:00,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13337 states, 13336 states have (on average 5.326109778044391) internal successors, (71029), 13336 states have internal predecessors, (71029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13337 states to 13337 states and 71029 transitions. [2021-05-22 01:59:00,611 INFO L78 Accepts]: Start accepts. Automaton has 13337 states and 71029 transitions. Word has length 33 [2021-05-22 01:59:00,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:00,612 INFO L482 AbstractCegarLoop]: Abstraction has 13337 states and 71029 transitions. [2021-05-22 01:59:00,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:00,612 INFO L276 IsEmpty]: Start isEmpty. Operand 13337 states and 71029 transitions. [2021-05-22 01:59:00,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:00,639 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:00,639 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:00,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-22 01:59:00,639 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:00,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:00,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1499867397, now seen corresponding path program 29 times [2021-05-22 01:59:00,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:00,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431651412] [2021-05-22 01:59:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:00,848 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 01:59:00,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:00,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431651412] [2021-05-22 01:59:00,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431651412] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:00,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:00,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:00,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395983921] [2021-05-22 01:59:00,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:00,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:00,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:00,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:00,849 INFO L87 Difference]: Start difference. First operand 13337 states and 71029 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:01,470 INFO L93 Difference]: Finished difference Result 32201 states and 161658 transitions. [2021-05-22 01:59:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:01,471 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:01,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:01,577 INFO L225 Difference]: With dead ends: 32201 [2021-05-22 01:59:01,578 INFO L226 Difference]: Without dead ends: 31450 [2021-05-22 01:59:01,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 229.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31450 states. [2021-05-22 01:59:02,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31450 to 13521. [2021-05-22 01:59:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13521 states, 13520 states have (on average 5.313683431952663) internal successors, (71841), 13520 states have internal predecessors, (71841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 71841 transitions. [2021-05-22 01:59:02,857 INFO L78 Accepts]: Start accepts. Automaton has 13521 states and 71841 transitions. Word has length 33 [2021-05-22 01:59:02,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:02,857 INFO L482 AbstractCegarLoop]: Abstraction has 13521 states and 71841 transitions. [2021-05-22 01:59:02,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:02,857 INFO L276 IsEmpty]: Start isEmpty. Operand 13521 states and 71841 transitions. [2021-05-22 01:59:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:02,890 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:02,890 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, 1, 1, 1, 1] [2021-05-22 01:59:02,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-22 01:59:02,890 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:02,890 INFO L82 PathProgramCache]: Analyzing trace with hash -2117390755, now seen corresponding path program 30 times [2021-05-22 01:59:02,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:02,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303188206] [2021-05-22 01:59:02,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:03,108 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 01:59:03,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:03,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303188206] [2021-05-22 01:59:03,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303188206] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:03,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:03,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:03,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595171511] [2021-05-22 01:59:03,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:03,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:03,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:03,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:03,109 INFO L87 Difference]: Start difference. First operand 13521 states and 71841 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:03,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:03,393 INFO L93 Difference]: Finished difference Result 32344 states and 162161 transitions. [2021-05-22 01:59:03,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:03,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:03,498 INFO L225 Difference]: With dead ends: 32344 [2021-05-22 01:59:03,498 INFO L226 Difference]: Without dead ends: 31174 [2021-05-22 01:59:03,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 213.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:04,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31174 states. [2021-05-22 01:59:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31174 to 13245. [2021-05-22 01:59:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13245 states, 13244 states have (on average 5.33245243128964) internal successors, (70623), 13244 states have internal predecessors, (70623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13245 states to 13245 states and 70623 transitions. [2021-05-22 01:59:04,750 INFO L78 Accepts]: Start accepts. Automaton has 13245 states and 70623 transitions. Word has length 33 [2021-05-22 01:59:04,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:04,750 INFO L482 AbstractCegarLoop]: Abstraction has 13245 states and 70623 transitions. [2021-05-22 01:59:04,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 13245 states and 70623 transitions. [2021-05-22 01:59:04,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:04,781 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:04,781 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, 1, 1, 1, 1] [2021-05-22 01:59:04,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-22 01:59:04,781 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:04,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:04,781 INFO L82 PathProgramCache]: Analyzing trace with hash -474558307, now seen corresponding path program 31 times [2021-05-22 01:59:04,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:04,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332536477] [2021-05-22 01:59:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:04,949 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 01:59:04,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:04,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332536477] [2021-05-22 01:59:04,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332536477] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:04,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:04,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:04,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018326501] [2021-05-22 01:59:04,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:04,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:04,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:04,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:04,950 INFO L87 Difference]: Start difference. First operand 13245 states and 70623 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:05,202 INFO L93 Difference]: Finished difference Result 31721 states and 159483 transitions. [2021-05-22 01:59:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:05,202 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:05,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:05,304 INFO L225 Difference]: With dead ends: 31721 [2021-05-22 01:59:05,304 INFO L226 Difference]: Without dead ends: 30962 [2021-05-22 01:59:05,304 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 169.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:06,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30962 states. [2021-05-22 01:59:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30962 to 13425. [2021-05-22 01:59:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13425 states, 13424 states have (on average 5.322631108462455) internal successors, (71451), 13424 states have internal predecessors, (71451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13425 states to 13425 states and 71451 transitions. [2021-05-22 01:59:06,546 INFO L78 Accepts]: Start accepts. Automaton has 13425 states and 71451 transitions. Word has length 33 [2021-05-22 01:59:06,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:06,546 INFO L482 AbstractCegarLoop]: Abstraction has 13425 states and 71451 transitions. [2021-05-22 01:59:06,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:06,546 INFO L276 IsEmpty]: Start isEmpty. Operand 13425 states and 71451 transitions. [2021-05-22 01:59:06,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:06,573 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:06,573 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:06,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-22 01:59:06,573 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:06,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:06,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1321355269, now seen corresponding path program 32 times [2021-05-22 01:59:06,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:06,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270625793] [2021-05-22 01:59:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:06,730 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 01:59:06,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:06,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270625793] [2021-05-22 01:59:06,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270625793] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:06,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:06,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:06,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998486388] [2021-05-22 01:59:06,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:06,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:06,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:06,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:06,731 INFO L87 Difference]: Start difference. First operand 13425 states and 71451 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:06,970 INFO L93 Difference]: Finished difference Result 31713 states and 159335 transitions. [2021-05-22 01:59:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:06,971 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:07,071 INFO L225 Difference]: With dead ends: 31713 [2021-05-22 01:59:07,071 INFO L226 Difference]: Without dead ends: 30842 [2021-05-22 01:59:07,071 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 178.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:07,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30842 states. [2021-05-22 01:59:08,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30842 to 13305. [2021-05-22 01:59:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13305 states, 13304 states have (on average 5.32914912808178) internal successors, (70899), 13304 states have internal predecessors, (70899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13305 states to 13305 states and 70899 transitions. [2021-05-22 01:59:08,324 INFO L78 Accepts]: Start accepts. Automaton has 13305 states and 70899 transitions. Word has length 33 [2021-05-22 01:59:08,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:08,325 INFO L482 AbstractCegarLoop]: Abstraction has 13305 states and 70899 transitions. [2021-05-22 01:59:08,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 13305 states and 70899 transitions. [2021-05-22 01:59:08,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:08,352 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:08,352 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, 1, 1, 1, 1] [2021-05-22 01:59:08,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-22 01:59:08,352 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:08,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:08,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1929909563, now seen corresponding path program 33 times [2021-05-22 01:59:08,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:08,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724457036] [2021-05-22 01:59:08,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:08,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:08,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724457036] [2021-05-22 01:59:08,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724457036] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:08,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:08,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:08,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77609080] [2021-05-22 01:59:08,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:08,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:08,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:08,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:08,517 INFO L87 Difference]: Start difference. First operand 13305 states and 70899 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:08,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:08,765 INFO L93 Difference]: Finished difference Result 31739 states and 159484 transitions. [2021-05-22 01:59:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:08,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:09,114 INFO L225 Difference]: With dead ends: 31739 [2021-05-22 01:59:09,115 INFO L226 Difference]: Without dead ends: 30980 [2021-05-22 01:59:09,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 181.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:09,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30980 states. [2021-05-22 01:59:10,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30980 to 13429. [2021-05-22 01:59:10,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13429 states, 13428 states have (on average 5.317470956210903) internal successors, (71403), 13428 states have internal predecessors, (71403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13429 states to 13429 states and 71403 transitions. [2021-05-22 01:59:10,130 INFO L78 Accepts]: Start accepts. Automaton has 13429 states and 71403 transitions. Word has length 33 [2021-05-22 01:59:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:10,130 INFO L482 AbstractCegarLoop]: Abstraction has 13429 states and 71403 transitions. [2021-05-22 01:59:10,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 13429 states and 71403 transitions. [2021-05-22 01:59:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:10,158 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:10,158 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:10,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-22 01:59:10,158 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1939317445, now seen corresponding path program 34 times [2021-05-22 01:59:10,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:10,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452795317] [2021-05-22 01:59:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:10,305 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 01:59:10,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:10,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452795317] [2021-05-22 01:59:10,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452795317] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:10,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:10,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:10,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317179505] [2021-05-22 01:59:10,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:10,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:10,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:10,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:10,306 INFO L87 Difference]: Start difference. First operand 13429 states and 71403 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:10,746 INFO L93 Difference]: Finished difference Result 31745 states and 159377 transitions. [2021-05-22 01:59:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:10,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:10,844 INFO L225 Difference]: With dead ends: 31745 [2021-05-22 01:59:10,844 INFO L226 Difference]: Without dead ends: 30856 [2021-05-22 01:59:10,844 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 181.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:11,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30856 states. [2021-05-22 01:59:11,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30856 to 13305. [2021-05-22 01:59:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13305 states, 13304 states have (on average 5.324639206253758) internal successors, (70839), 13304 states have internal predecessors, (70839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13305 states to 13305 states and 70839 transitions. [2021-05-22 01:59:12,104 INFO L78 Accepts]: Start accepts. Automaton has 13305 states and 70839 transitions. Word has length 33 [2021-05-22 01:59:12,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:12,105 INFO L482 AbstractCegarLoop]: Abstraction has 13305 states and 70839 transitions. [2021-05-22 01:59:12,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:12,105 INFO L276 IsEmpty]: Start isEmpty. Operand 13305 states and 70839 transitions. [2021-05-22 01:59:12,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:12,132 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:12,132 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, 1, 1, 1, 1] [2021-05-22 01:59:12,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-22 01:59:12,132 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:12,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:12,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1073161497, now seen corresponding path program 35 times [2021-05-22 01:59:12,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:12,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856201117] [2021-05-22 01:59:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:12,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:12,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856201117] [2021-05-22 01:59:12,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856201117] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:12,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:12,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:12,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109835957] [2021-05-22 01:59:12,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:12,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:12,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:12,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:12,299 INFO L87 Difference]: Start difference. First operand 13305 states and 70839 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:12,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:12,548 INFO L93 Difference]: Finished difference Result 31719 states and 159352 transitions. [2021-05-22 01:59:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:12,553 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:12,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:12,650 INFO L225 Difference]: With dead ends: 31719 [2021-05-22 01:59:12,650 INFO L226 Difference]: Without dead ends: 30968 [2021-05-22 01:59:12,650 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:13,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30968 states. [2021-05-22 01:59:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30968 to 13425. [2021-05-22 01:59:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13425 states, 13424 states have (on average 5.31369189511323) internal successors, (71331), 13424 states have internal predecessors, (71331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13425 states to 13425 states and 71331 transitions. [2021-05-22 01:59:13,914 INFO L78 Accepts]: Start accepts. Automaton has 13425 states and 71331 transitions. Word has length 33 [2021-05-22 01:59:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:13,914 INFO L482 AbstractCegarLoop]: Abstraction has 13425 states and 71331 transitions. [2021-05-22 01:59:13,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:13,914 INFO L276 IsEmpty]: Start isEmpty. Operand 13425 states and 71331 transitions. [2021-05-22 01:59:13,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:13,941 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:13,941 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, 1, 1, 1, 1] [2021-05-22 01:59:13,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-22 01:59:13,941 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:13,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:13,942 INFO L82 PathProgramCache]: Analyzing trace with hash -237419525, now seen corresponding path program 36 times [2021-05-22 01:59:13,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:13,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356185473] [2021-05-22 01:59:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:14,143 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 01:59:14,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:14,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356185473] [2021-05-22 01:59:14,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356185473] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:14,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:14,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:14,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328893122] [2021-05-22 01:59:14,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:14,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:14,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:14,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:14,145 INFO L87 Difference]: Start difference. First operand 13425 states and 71331 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:14,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:14,438 INFO L93 Difference]: Finished difference Result 31733 states and 159277 transitions. [2021-05-22 01:59:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:14,439 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:14,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:14,557 INFO L225 Difference]: With dead ends: 31733 [2021-05-22 01:59:14,557 INFO L226 Difference]: Without dead ends: 30788 [2021-05-22 01:59:14,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 225.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30788 states. [2021-05-22 01:59:15,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30788 to 13245. [2021-05-22 01:59:15,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13245 states, 13244 states have (on average 5.3301872546058595) internal successors, (70593), 13244 states have internal predecessors, (70593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13245 states to 13245 states and 70593 transitions. [2021-05-22 01:59:15,801 INFO L78 Accepts]: Start accepts. Automaton has 13245 states and 70593 transitions. Word has length 33 [2021-05-22 01:59:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:15,801 INFO L482 AbstractCegarLoop]: Abstraction has 13245 states and 70593 transitions. [2021-05-22 01:59:15,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 13245 states and 70593 transitions. [2021-05-22 01:59:15,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:15,828 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:15,829 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:15,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-22 01:59:15,829 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:15,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1711091003, now seen corresponding path program 37 times [2021-05-22 01:59:15,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:15,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899553589] [2021-05-22 01:59:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:16,011 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 01:59:16,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:16,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899553589] [2021-05-22 01:59:16,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899553589] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:16,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:16,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:16,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137486503] [2021-05-22 01:59:16,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:16,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:16,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:16,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:16,013 INFO L87 Difference]: Start difference. First operand 13245 states and 70593 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:16,253 INFO L93 Difference]: Finished difference Result 32344 states and 162302 transitions. [2021-05-22 01:59:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:16,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:16,365 INFO L225 Difference]: With dead ends: 32344 [2021-05-22 01:59:16,366 INFO L226 Difference]: Without dead ends: 31585 [2021-05-22 01:59:16,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 200.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31585 states. [2021-05-22 01:59:17,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31585 to 13559. [2021-05-22 01:59:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13559 states, 13558 states have (on average 5.316565865171854) internal successors, (72082), 13558 states have internal predecessors, (72082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:17,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13559 states to 13559 states and 72082 transitions. [2021-05-22 01:59:17,663 INFO L78 Accepts]: Start accepts. Automaton has 13559 states and 72082 transitions. Word has length 33 [2021-05-22 01:59:17,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:17,663 INFO L482 AbstractCegarLoop]: Abstraction has 13559 states and 72082 transitions. [2021-05-22 01:59:17,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:17,664 INFO L276 IsEmpty]: Start isEmpty. Operand 13559 states and 72082 transitions. [2021-05-22 01:59:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:17,691 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:17,691 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:17,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-22 01:59:17,691 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:17,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:17,692 INFO L82 PathProgramCache]: Analyzing trace with hash -195795653, now seen corresponding path program 38 times [2021-05-22 01:59:17,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:17,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469319180] [2021-05-22 01:59:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:17,883 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 01:59:17,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:17,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469319180] [2021-05-22 01:59:17,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469319180] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:17,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:17,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:17,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113165173] [2021-05-22 01:59:17,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:17,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:17,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:17,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:17,884 INFO L87 Difference]: Start difference. First operand 13559 states and 72082 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:18,136 INFO L93 Difference]: Finished difference Result 32479 states and 162773 transitions. [2021-05-22 01:59:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:18,504 INFO L225 Difference]: With dead ends: 32479 [2021-05-22 01:59:18,504 INFO L226 Difference]: Without dead ends: 31397 [2021-05-22 01:59:18,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 183.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31397 states. [2021-05-22 01:59:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31397 to 13371. [2021-05-22 01:59:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.3226626776365) internal successors, (71164), 13370 states have internal predecessors, (71164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71164 transitions. [2021-05-22 01:59:19,552 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71164 transitions. Word has length 33 [2021-05-22 01:59:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:19,553 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71164 transitions. [2021-05-22 01:59:19,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71164 transitions. [2021-05-22 01:59:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:19,582 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:19,582 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, 1, 1, 1, 1] [2021-05-22 01:59:19,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-22 01:59:19,582 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:19,582 INFO L82 PathProgramCache]: Analyzing trace with hash -874274531, now seen corresponding path program 39 times [2021-05-22 01:59:19,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:19,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521267565] [2021-05-22 01:59:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:19,750 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 01:59:19,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:19,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521267565] [2021-05-22 01:59:19,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521267565] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:19,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:19,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:19,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546623478] [2021-05-22 01:59:19,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:19,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:19,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:19,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:19,751 INFO L87 Difference]: Start difference. First operand 13371 states and 71164 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:20,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:20,244 INFO L93 Difference]: Finished difference Result 32151 states and 161310 transitions. [2021-05-22 01:59:20,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:20,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:20,344 INFO L225 Difference]: With dead ends: 32151 [2021-05-22 01:59:20,344 INFO L226 Difference]: Without dead ends: 31392 [2021-05-22 01:59:20,344 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 183.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:21,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31392 states. [2021-05-22 01:59:21,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31392 to 13495. [2021-05-22 01:59:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13495 states, 13494 states have (on average 5.311101230176375) internal successors, (71668), 13494 states have internal predecessors, (71668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 71668 transitions. [2021-05-22 01:59:21,636 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 71668 transitions. Word has length 33 [2021-05-22 01:59:21,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:21,636 INFO L482 AbstractCegarLoop]: Abstraction has 13495 states and 71668 transitions. [2021-05-22 01:59:21,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 71668 transitions. [2021-05-22 01:59:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:21,663 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:21,663 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, 1, 1, 1, 1] [2021-05-22 01:59:21,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-22 01:59:21,663 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:21,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:21,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1818395963, now seen corresponding path program 40 times [2021-05-22 01:59:21,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:21,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632941449] [2021-05-22 01:59:21,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:21,813 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 01:59:21,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:21,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632941449] [2021-05-22 01:59:21,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632941449] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:21,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:21,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:21,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149560782] [2021-05-22 01:59:21,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:21,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:21,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:21,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:21,814 INFO L87 Difference]: Start difference. First operand 13495 states and 71668 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:22,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:22,057 INFO L93 Difference]: Finished difference Result 32157 states and 161203 transitions. [2021-05-22 01:59:22,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:22,057 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:22,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:22,157 INFO L225 Difference]: With dead ends: 32157 [2021-05-22 01:59:22,157 INFO L226 Difference]: Without dead ends: 31268 [2021-05-22 01:59:22,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31268 states. [2021-05-22 01:59:23,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31268 to 13371. [2021-05-22 01:59:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.318025430067315) internal successors, (71102), 13370 states have internal predecessors, (71102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71102 transitions. [2021-05-22 01:59:23,415 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71102 transitions. Word has length 33 [2021-05-22 01:59:23,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:23,415 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71102 transitions. [2021-05-22 01:59:23,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:23,415 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71102 transitions. [2021-05-22 01:59:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:23,442 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:23,442 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, 1, 1, 1, 1] [2021-05-22 01:59:23,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-22 01:59:23,442 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:23,443 INFO L82 PathProgramCache]: Analyzing trace with hash 918727995, now seen corresponding path program 41 times [2021-05-22 01:59:23,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:23,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202911239] [2021-05-22 01:59:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:23,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:23,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202911239] [2021-05-22 01:59:23,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202911239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:23,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:23,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:23,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402295594] [2021-05-22 01:59:23,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:23,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:23,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:23,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:23,603 INFO L87 Difference]: Start difference. First operand 13371 states and 71102 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:23,811 INFO L93 Difference]: Finished difference Result 32552 states and 163024 transitions. [2021-05-22 01:59:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:23,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:23,913 INFO L225 Difference]: With dead ends: 32552 [2021-05-22 01:59:23,914 INFO L226 Difference]: Without dead ends: 31658 [2021-05-22 01:59:23,914 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:24,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31658 states. [2021-05-22 01:59:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31658 to 13626. [2021-05-22 01:59:25,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13626 states, 13625 states have (on average 5.293577981651376) internal successors, (72125), 13625 states have internal predecessors, (72125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13626 states to 13626 states and 72125 transitions. [2021-05-22 01:59:25,171 INFO L78 Accepts]: Start accepts. Automaton has 13626 states and 72125 transitions. Word has length 33 [2021-05-22 01:59:25,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:25,172 INFO L482 AbstractCegarLoop]: Abstraction has 13626 states and 72125 transitions. [2021-05-22 01:59:25,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:25,172 INFO L276 IsEmpty]: Start isEmpty. Operand 13626 states and 72125 transitions. [2021-05-22 01:59:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:25,200 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:25,200 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:25,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-22 01:59:25,200 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:25,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:25,200 INFO L82 PathProgramCache]: Analyzing trace with hash 437825949, now seen corresponding path program 42 times [2021-05-22 01:59:25,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:25,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379197197] [2021-05-22 01:59:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:25,371 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 01:59:25,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:25,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379197197] [2021-05-22 01:59:25,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379197197] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:25,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:25,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:25,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008288276] [2021-05-22 01:59:25,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:25,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:25,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:25,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:25,372 INFO L87 Difference]: Start difference. First operand 13626 states and 72125 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:25,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:25,600 INFO L93 Difference]: Finished difference Result 32423 states and 162255 transitions. [2021-05-22 01:59:25,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:25,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:25,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:25,700 INFO L225 Difference]: With dead ends: 32423 [2021-05-22 01:59:25,700 INFO L226 Difference]: Without dead ends: 31277 [2021-05-22 01:59:25,701 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 186.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31277 states. [2021-05-22 01:59:26,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31277 to 13245. [2021-05-22 01:59:26,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13245 states, 13244 states have (on average 5.325505889459378) internal successors, (70531), 13244 states have internal predecessors, (70531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13245 states to 13245 states and 70531 transitions. [2021-05-22 01:59:26,958 INFO L78 Accepts]: Start accepts. Automaton has 13245 states and 70531 transitions. Word has length 33 [2021-05-22 01:59:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:26,958 INFO L482 AbstractCegarLoop]: Abstraction has 13245 states and 70531 transitions. [2021-05-22 01:59:26,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 13245 states and 70531 transitions. [2021-05-22 01:59:26,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:26,985 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:26,985 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, 1, 1, 1, 1] [2021-05-22 01:59:26,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-22 01:59:26,985 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:26,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:26,987 INFO L82 PathProgramCache]: Analyzing trace with hash -118733415, now seen corresponding path program 43 times [2021-05-22 01:59:26,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:26,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63405612] [2021-05-22 01:59:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:27,173 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 01:59:27,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:27,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63405612] [2021-05-22 01:59:27,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63405612] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:27,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:27,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:27,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507645299] [2021-05-22 01:59:27,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:27,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:27,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:27,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:27,174 INFO L87 Difference]: Start difference. First operand 13245 states and 70531 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:27,417 INFO L93 Difference]: Finished difference Result 32306 states and 162099 transitions. [2021-05-22 01:59:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:27,775 INFO L225 Difference]: With dead ends: 32306 [2021-05-22 01:59:27,775 INFO L226 Difference]: Without dead ends: 31555 [2021-05-22 01:59:27,775 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 204.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31555 states. [2021-05-22 01:59:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31555 to 13553. [2021-05-22 01:59:28,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13553 states, 13552 states have (on average 5.312795159386068) internal successors, (71999), 13552 states have internal predecessors, (71999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13553 states to 13553 states and 71999 transitions. [2021-05-22 01:59:28,812 INFO L78 Accepts]: Start accepts. Automaton has 13553 states and 71999 transitions. Word has length 33 [2021-05-22 01:59:28,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:28,812 INFO L482 AbstractCegarLoop]: Abstraction has 13553 states and 71999 transitions. [2021-05-22 01:59:28,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:28,813 INFO L276 IsEmpty]: Start isEmpty. Operand 13553 states and 71999 transitions. [2021-05-22 01:59:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:28,841 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:28,841 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, 1, 1, 1, 1] [2021-05-22 01:59:28,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-22 01:59:28,841 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:28,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:28,841 INFO L82 PathProgramCache]: Analyzing trace with hash -736256773, now seen corresponding path program 44 times [2021-05-22 01:59:28,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:28,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188277595] [2021-05-22 01:59:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:29,022 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 01:59:29,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:29,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188277595] [2021-05-22 01:59:29,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188277595] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:29,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:29,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:29,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090043427] [2021-05-22 01:59:29,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:29,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:29,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:29,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:29,023 INFO L87 Difference]: Start difference. First operand 13553 states and 71999 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:29,443 INFO L93 Difference]: Finished difference Result 32449 states and 162602 transitions. [2021-05-22 01:59:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:29,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:29,546 INFO L225 Difference]: With dead ends: 32449 [2021-05-22 01:59:29,546 INFO L226 Difference]: Without dead ends: 31371 [2021-05-22 01:59:29,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 179.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31371 states. [2021-05-22 01:59:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31371 to 13369. [2021-05-22 01:59:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13369 states, 13368 states have (on average 5.318297426690604) internal successors, (71095), 13368 states have internal predecessors, (71095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 71095 transitions. [2021-05-22 01:59:30,836 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 71095 transitions. Word has length 33 [2021-05-22 01:59:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:30,836 INFO L482 AbstractCegarLoop]: Abstraction has 13369 states and 71095 transitions. [2021-05-22 01:59:30,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 71095 transitions. [2021-05-22 01:59:30,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:30,864 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:30,864 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, 1, 1, 1, 1] [2021-05-22 01:59:30,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-22 01:59:30,864 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:30,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:30,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1590868347, now seen corresponding path program 45 times [2021-05-22 01:59:30,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:30,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073896754] [2021-05-22 01:59:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:31,046 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 01:59:31,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:31,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073896754] [2021-05-22 01:59:31,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073896754] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:31,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:31,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:31,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723365937] [2021-05-22 01:59:31,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:31,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:31,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:31,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:31,047 INFO L87 Difference]: Start difference. First operand 13369 states and 71095 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:31,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:31,282 INFO L93 Difference]: Finished difference Result 32113 states and 161109 transitions. [2021-05-22 01:59:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:31,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:31,384 INFO L225 Difference]: With dead ends: 32113 [2021-05-22 01:59:31,384 INFO L226 Difference]: Without dead ends: 31362 [2021-05-22 01:59:31,384 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 195.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:32,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31362 states. [2021-05-22 01:59:32,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31362 to 13489. [2021-05-22 01:59:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13489 states, 13488 states have (on average 5.307458481613286) internal successors, (71587), 13488 states have internal predecessors, (71587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:32,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13489 states to 13489 states and 71587 transitions. [2021-05-22 01:59:32,637 INFO L78 Accepts]: Start accepts. Automaton has 13489 states and 71587 transitions. Word has length 33 [2021-05-22 01:59:32,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:32,637 INFO L482 AbstractCegarLoop]: Abstraction has 13489 states and 71587 transitions. [2021-05-22 01:59:32,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:32,637 INFO L276 IsEmpty]: Start isEmpty. Operand 13489 states and 71587 transitions. [2021-05-22 01:59:32,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:32,664 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:32,664 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, 1, 1, 1, 1] [2021-05-22 01:59:32,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-22 01:59:32,664 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:32,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:32,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1747749765, now seen corresponding path program 46 times [2021-05-22 01:59:32,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:32,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756450047] [2021-05-22 01:59:32,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:32,845 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 01:59:32,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:32,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756450047] [2021-05-22 01:59:32,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756450047] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:32,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:32,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:32,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925153218] [2021-05-22 01:59:32,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:32,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:32,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:32,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:32,846 INFO L87 Difference]: Start difference. First operand 13489 states and 71587 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:33,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:33,084 INFO L93 Difference]: Finished difference Result 32127 states and 161034 transitions. [2021-05-22 01:59:33,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:33,085 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:33,184 INFO L225 Difference]: With dead ends: 32127 [2021-05-22 01:59:33,184 INFO L226 Difference]: Without dead ends: 31242 [2021-05-22 01:59:33,184 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 199.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:34,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31242 states. [2021-05-22 01:59:34,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31242 to 13369. [2021-05-22 01:59:34,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13369 states, 13368 states have (on average 5.313809096349491) internal successors, (71035), 13368 states have internal predecessors, (71035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 71035 transitions. [2021-05-22 01:59:34,423 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 71035 transitions. Word has length 33 [2021-05-22 01:59:34,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:34,423 INFO L482 AbstractCegarLoop]: Abstraction has 13369 states and 71035 transitions. [2021-05-22 01:59:34,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:34,423 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 71035 transitions. [2021-05-22 01:59:34,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:34,450 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:34,451 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:34,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-22 01:59:34,451 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:34,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:34,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1779201187, now seen corresponding path program 47 times [2021-05-22 01:59:34,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:34,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827098217] [2021-05-22 01:59:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:34,621 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 01:59:34,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:34,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827098217] [2021-05-22 01:59:34,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827098217] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:34,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:34,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:34,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89636049] [2021-05-22 01:59:34,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:34,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:34,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:34,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:34,622 INFO L87 Difference]: Start difference. First operand 13369 states and 71035 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:34,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:34,858 INFO L93 Difference]: Finished difference Result 32534 states and 162897 transitions. [2021-05-22 01:59:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:34,858 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:34,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:34,961 INFO L225 Difference]: With dead ends: 32534 [2021-05-22 01:59:34,961 INFO L226 Difference]: Without dead ends: 31640 [2021-05-22 01:59:34,961 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31640 states. [2021-05-22 01:59:36,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31640 to 13624. [2021-05-22 01:59:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13624 states, 13623 states have (on average 5.289436981575277) internal successors, (72058), 13623 states have internal predecessors, (72058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 72058 transitions. [2021-05-22 01:59:36,219 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 72058 transitions. Word has length 33 [2021-05-22 01:59:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:36,219 INFO L482 AbstractCegarLoop]: Abstraction has 13624 states and 72058 transitions. [2021-05-22 01:59:36,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 72058 transitions. [2021-05-22 01:59:36,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:36,246 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:36,246 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, 1, 1, 1, 1] [2021-05-22 01:59:36,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-22 01:59:36,246 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:36,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:36,247 INFO L82 PathProgramCache]: Analyzing trace with hash 492704571, now seen corresponding path program 48 times [2021-05-22 01:59:36,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:36,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744565582] [2021-05-22 01:59:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:36,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:36,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:36,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744565582] [2021-05-22 01:59:36,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744565582] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:36,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:36,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:36,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60485228] [2021-05-22 01:59:36,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:36,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:36,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:36,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:36,405 INFO L87 Difference]: Start difference. First operand 13624 states and 72058 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:36,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:36,633 INFO L93 Difference]: Finished difference Result 32405 states and 162128 transitions. [2021-05-22 01:59:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:36,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:36,995 INFO L225 Difference]: With dead ends: 32405 [2021-05-22 01:59:36,995 INFO L226 Difference]: Without dead ends: 31199 [2021-05-22 01:59:36,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:37,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31199 states. [2021-05-22 01:59:37,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31199 to 13183. [2021-05-22 01:59:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13183 states, 13182 states have (on average 5.331512668790776) internal successors, (70280), 13182 states have internal predecessors, (70280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 70280 transitions. [2021-05-22 01:59:38,035 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 70280 transitions. Word has length 33 [2021-05-22 01:59:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:38,035 INFO L482 AbstractCegarLoop]: Abstraction has 13183 states and 70280 transitions. [2021-05-22 01:59:38,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 70280 transitions. [2021-05-22 01:59:38,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:38,062 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:38,062 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:38,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-22 01:59:38,063 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:38,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:38,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1981905761, now seen corresponding path program 49 times [2021-05-22 01:59:38,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:38,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450355969] [2021-05-22 01:59:38,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:38,209 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 01:59:38,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:38,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450355969] [2021-05-22 01:59:38,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450355969] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:38,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:38,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:38,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280752856] [2021-05-22 01:59:38,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:38,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:38,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:38,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:38,210 INFO L87 Difference]: Start difference. First operand 13183 states and 70280 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:38,526 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-05-22 01:59:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:38,632 INFO L93 Difference]: Finished difference Result 31009 states and 156157 transitions. [2021-05-22 01:59:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:38,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:38,732 INFO L225 Difference]: With dead ends: 31009 [2021-05-22 01:59:38,733 INFO L226 Difference]: Without dead ends: 30250 [2021-05-22 01:59:38,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 362.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:39,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30250 states. [2021-05-22 01:59:39,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30250 to 13387. [2021-05-22 01:59:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13387 states, 13386 states have (on average 5.323472284476319) internal successors, (71260), 13386 states have internal predecessors, (71260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71260 transitions. [2021-05-22 01:59:40,035 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71260 transitions. Word has length 33 [2021-05-22 01:59:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:40,035 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71260 transitions. [2021-05-22 01:59:40,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:40,036 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71260 transitions. [2021-05-22 01:59:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:40,072 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:40,072 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, 1, 1, 1, 1] [2021-05-22 01:59:40,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-22 01:59:40,072 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:40,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:40,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1466264573, now seen corresponding path program 50 times [2021-05-22 01:59:40,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:40,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270238505] [2021-05-22 01:59:40,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:40,223 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 01:59:40,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:40,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270238505] [2021-05-22 01:59:40,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270238505] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:40,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:40,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:40,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820610281] [2021-05-22 01:59:40,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:40,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:40,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:40,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:40,224 INFO L87 Difference]: Start difference. First operand 13387 states and 71260 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:40,455 INFO L93 Difference]: Finished difference Result 31001 states and 156009 transitions. [2021-05-22 01:59:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:40,456 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:40,553 INFO L225 Difference]: With dead ends: 31001 [2021-05-22 01:59:40,553 INFO L226 Difference]: Without dead ends: 30130 [2021-05-22 01:59:40,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30130 states. [2021-05-22 01:59:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30130 to 13267. [2021-05-22 01:59:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13267 states, 13266 states have (on average 5.33031810643751) internal successors, (70712), 13266 states have internal predecessors, (70712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70712 transitions. [2021-05-22 01:59:41,794 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70712 transitions. Word has length 33 [2021-05-22 01:59:41,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:41,794 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70712 transitions. [2021-05-22 01:59:41,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:41,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70712 transitions. [2021-05-22 01:59:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:41,821 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:41,821 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:41,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-22 01:59:41,821 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:41,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:41,821 INFO L82 PathProgramCache]: Analyzing trace with hash 289999997, now seen corresponding path program 51 times [2021-05-22 01:59:41,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:41,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871146517] [2021-05-22 01:59:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:41,982 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 01:59:41,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:41,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871146517] [2021-05-22 01:59:41,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871146517] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:41,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:41,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:41,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260549235] [2021-05-22 01:59:41,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:41,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:41,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:41,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:41,983 INFO L87 Difference]: Start difference. First operand 13267 states and 70712 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:42,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:42,203 INFO L93 Difference]: Finished difference Result 30985 states and 156001 transitions. [2021-05-22 01:59:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:42,207 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:42,305 INFO L225 Difference]: With dead ends: 30985 [2021-05-22 01:59:42,305 INFO L226 Difference]: Without dead ends: 30226 [2021-05-22 01:59:42,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 178.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30226 states. [2021-05-22 01:59:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30226 to 13379. [2021-05-22 01:59:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 5.320376737927941) internal successors, (71176), 13378 states have internal predecessors, (71176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71176 transitions. [2021-05-22 01:59:43,497 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71176 transitions. Word has length 33 [2021-05-22 01:59:43,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:43,497 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71176 transitions. [2021-05-22 01:59:43,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:43,497 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71176 transitions. [2021-05-22 01:59:43,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:43,524 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:43,524 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, 1, 1, 1, 1] [2021-05-22 01:59:43,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-22 01:59:43,524 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:43,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:43,525 INFO L82 PathProgramCache]: Analyzing trace with hash -506026883, now seen corresponding path program 52 times [2021-05-22 01:59:43,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:43,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597645566] [2021-05-22 01:59:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:43,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:43,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597645566] [2021-05-22 01:59:43,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597645566] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:43,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:43,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:43,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664092169] [2021-05-22 01:59:43,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:43,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:43,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:43,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:43,661 INFO L87 Difference]: Start difference. First operand 13379 states and 71176 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:43,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:43,909 INFO L93 Difference]: Finished difference Result 30961 states and 155797 transitions. [2021-05-22 01:59:43,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:43,909 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:44,005 INFO L225 Difference]: With dead ends: 30961 [2021-05-22 01:59:44,005 INFO L226 Difference]: Without dead ends: 30114 [2021-05-22 01:59:44,006 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:44,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30114 states. [2021-05-22 01:59:45,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30114 to 13267. [2021-05-22 01:59:45,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13267 states, 13266 states have (on average 5.326096788783356) internal successors, (70656), 13266 states have internal predecessors, (70656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70656 transitions. [2021-05-22 01:59:45,232 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70656 transitions. Word has length 33 [2021-05-22 01:59:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:45,232 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70656 transitions. [2021-05-22 01:59:45,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70656 transitions. [2021-05-22 01:59:45,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:45,259 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:45,260 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, 1, 1, 1, 1] [2021-05-22 01:59:45,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-22 01:59:45,260 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:45,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:45,260 INFO L82 PathProgramCache]: Analyzing trace with hash -566748069, now seen corresponding path program 53 times [2021-05-22 01:59:45,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:45,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663321021] [2021-05-22 01:59:45,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:45,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:45,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663321021] [2021-05-22 01:59:45,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663321021] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:45,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:45,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:45,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069052357] [2021-05-22 01:59:45,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:45,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:45,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:45,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:45,402 INFO L87 Difference]: Start difference. First operand 13267 states and 70656 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:45,647 INFO L93 Difference]: Finished difference Result 30969 states and 155889 transitions. [2021-05-22 01:59:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:45,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:45,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:45,744 INFO L225 Difference]: With dead ends: 30969 [2021-05-22 01:59:45,744 INFO L226 Difference]: Without dead ends: 30218 [2021-05-22 01:59:45,745 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:46,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30218 states. [2021-05-22 01:59:46,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30218 to 13379. [2021-05-22 01:59:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 5.316190760950815) internal successors, (71120), 13378 states have internal predecessors, (71120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71120 transitions. [2021-05-22 01:59:46,996 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71120 transitions. Word has length 33 [2021-05-22 01:59:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:46,996 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71120 transitions. [2021-05-22 01:59:46,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71120 transitions. [2021-05-22 01:59:47,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:47,023 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:47,023 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, 1, 1, 1, 1] [2021-05-22 01:59:47,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-22 01:59:47,024 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:47,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:47,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1047650115, now seen corresponding path program 54 times [2021-05-22 01:59:47,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:47,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743015002] [2021-05-22 01:59:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:47,190 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 01:59:47,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:47,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743015002] [2021-05-22 01:59:47,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743015002] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:47,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:47,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:47,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526102847] [2021-05-22 01:59:47,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:47,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:47,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:47,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:47,191 INFO L87 Difference]: Start difference. First operand 13379 states and 71120 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:47,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:47,627 INFO L93 Difference]: Finished difference Result 30953 states and 155713 transitions. [2021-05-22 01:59:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:47,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:47,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:47,738 INFO L225 Difference]: With dead ends: 30953 [2021-05-22 01:59:47,738 INFO L226 Difference]: Without dead ends: 30050 [2021-05-22 01:59:47,738 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 171.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30050 states. [2021-05-22 01:59:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30050 to 13211. [2021-05-22 01:59:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13211 states, 13210 states have (on average 5.33111279333838) internal successors, (70424), 13210 states have internal predecessors, (70424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:48,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 70424 transitions. [2021-05-22 01:59:48,754 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 70424 transitions. Word has length 33 [2021-05-22 01:59:48,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:48,755 INFO L482 AbstractCegarLoop]: Abstraction has 13211 states and 70424 transitions. [2021-05-22 01:59:48,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:48,755 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 70424 transitions. [2021-05-22 01:59:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:48,781 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:48,782 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:48,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-22 01:59:48,782 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:48,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1071636767, now seen corresponding path program 55 times [2021-05-22 01:59:48,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:48,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159443778] [2021-05-22 01:59:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:48,919 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 01:59:48,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:48,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159443778] [2021-05-22 01:59:48,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159443778] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:48,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:48,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:48,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166847387] [2021-05-22 01:59:48,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:48,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:48,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:48,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:48,920 INFO L87 Difference]: Start difference. First operand 13211 states and 70424 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:49,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:49,310 INFO L93 Difference]: Finished difference Result 31063 states and 156346 transitions. [2021-05-22 01:59:49,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:49,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:49,407 INFO L225 Difference]: With dead ends: 31063 [2021-05-22 01:59:49,407 INFO L226 Difference]: Without dead ends: 30304 [2021-05-22 01:59:49,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30304 states. [2021-05-22 01:59:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30304 to 13391. [2021-05-22 01:59:50,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13391 states, 13390 states have (on average 5.321284540702017) internal successors, (71252), 13390 states have internal predecessors, (71252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13391 states to 13391 states and 71252 transitions. [2021-05-22 01:59:50,679 INFO L78 Accepts]: Start accepts. Automaton has 13391 states and 71252 transitions. Word has length 33 [2021-05-22 01:59:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:50,679 INFO L482 AbstractCegarLoop]: Abstraction has 13391 states and 71252 transitions. [2021-05-22 01:59:50,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:50,679 INFO L276 IsEmpty]: Start isEmpty. Operand 13391 states and 71252 transitions. [2021-05-22 01:59:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:50,711 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:50,712 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:50,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-22 01:59:50,712 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:50,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:50,712 INFO L82 PathProgramCache]: Analyzing trace with hash 224839805, now seen corresponding path program 56 times [2021-05-22 01:59:50,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:50,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428621516] [2021-05-22 01:59:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:50,858 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 01:59:50,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:50,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428621516] [2021-05-22 01:59:50,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428621516] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:50,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:50,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:50,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119291913] [2021-05-22 01:59:50,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:50,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:50,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:50,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:50,859 INFO L87 Difference]: Start difference. First operand 13391 states and 71252 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:51,091 INFO L93 Difference]: Finished difference Result 31055 states and 156198 transitions. [2021-05-22 01:59:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:51,091 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:51,187 INFO L225 Difference]: With dead ends: 31055 [2021-05-22 01:59:51,188 INFO L226 Difference]: Without dead ends: 30184 [2021-05-22 01:59:51,188 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:51,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30184 states. [2021-05-22 01:59:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30184 to 13271. [2021-05-22 01:59:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13271 states, 13270 states have (on average 5.327807083647325) internal successors, (70700), 13270 states have internal predecessors, (70700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 70700 transitions. [2021-05-22 01:59:52,410 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 70700 transitions. Word has length 33 [2021-05-22 01:59:52,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:52,410 INFO L482 AbstractCegarLoop]: Abstraction has 13271 states and 70700 transitions. [2021-05-22 01:59:52,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 70700 transitions. [2021-05-22 01:59:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:52,438 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:52,438 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, 1, 1, 1, 1] [2021-05-22 01:59:52,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-22 01:59:52,438 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:52,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:52,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1790371553, now seen corresponding path program 57 times [2021-05-22 01:59:52,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:52,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301849322] [2021-05-22 01:59:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:52,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:52,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301849322] [2021-05-22 01:59:52,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301849322] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:52,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:52,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:52,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182183019] [2021-05-22 01:59:52,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:52,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:52,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:52,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:52,587 INFO L87 Difference]: Start difference. First operand 13271 states and 70700 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:52,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:52,804 INFO L93 Difference]: Finished difference Result 31081 states and 156347 transitions. [2021-05-22 01:59:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:52,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:52,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:52,902 INFO L225 Difference]: With dead ends: 31081 [2021-05-22 01:59:52,902 INFO L226 Difference]: Without dead ends: 30322 [2021-05-22 01:59:52,903 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:53,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30322 states. [2021-05-22 01:59:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30322 to 13395. [2021-05-22 01:59:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13395 states, 13394 states have (on average 5.316111691802299) internal successors, (71204), 13394 states have internal predecessors, (71204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71204 transitions. [2021-05-22 01:59:54,111 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71204 transitions. Word has length 33 [2021-05-22 01:59:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:54,111 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71204 transitions. [2021-05-22 01:59:54,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71204 transitions. [2021-05-22 01:59:54,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:54,139 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:54,139 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, 1, 1, 1, 1] [2021-05-22 01:59:54,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-22 01:59:54,139 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:54,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:54,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1364631265, now seen corresponding path program 58 times [2021-05-22 01:59:54,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:54,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139066659] [2021-05-22 01:59:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:54,288 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 01:59:54,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:54,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139066659] [2021-05-22 01:59:54,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139066659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:54,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:54,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:54,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542890917] [2021-05-22 01:59:54,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:54,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:54,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:54,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:54,289 INFO L87 Difference]: Start difference. First operand 13395 states and 71204 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:54,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:54,511 INFO L93 Difference]: Finished difference Result 31087 states and 156240 transitions. [2021-05-22 01:59:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:54,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:54,611 INFO L225 Difference]: With dead ends: 31087 [2021-05-22 01:59:54,611 INFO L226 Difference]: Without dead ends: 30198 [2021-05-22 01:59:54,611 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 169.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30198 states. [2021-05-22 01:59:55,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30198 to 13271. [2021-05-22 01:59:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13271 states, 13270 states have (on average 5.3232856066315) internal successors, (70640), 13270 states have internal predecessors, (70640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 70640 transitions. [2021-05-22 01:59:55,857 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 70640 transitions. Word has length 33 [2021-05-22 01:59:55,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:55,857 INFO L482 AbstractCegarLoop]: Abstraction has 13271 states and 70640 transitions. [2021-05-22 01:59:55,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 70640 transitions. [2021-05-22 01:59:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:55,885 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:55,885 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, 1, 1, 1, 1] [2021-05-22 01:59:55,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-22 01:59:55,885 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:55,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:55,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1647847677, now seen corresponding path program 59 times [2021-05-22 01:59:55,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:55,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623359988] [2021-05-22 01:59:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:56,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:56,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623359988] [2021-05-22 01:59:56,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623359988] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:56,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:56,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:56,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292481419] [2021-05-22 01:59:56,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:56,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:56,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:56,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:56,068 INFO L87 Difference]: Start difference. First operand 13271 states and 70640 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:56,321 INFO L93 Difference]: Finished difference Result 31061 states and 156215 transitions. [2021-05-22 01:59:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:56,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:56,424 INFO L225 Difference]: With dead ends: 31061 [2021-05-22 01:59:56,425 INFO L226 Difference]: Without dead ends: 30310 [2021-05-22 01:59:56,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 201.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:57,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30310 states. [2021-05-22 01:59:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30310 to 13391. [2021-05-22 01:59:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13391 states, 13390 states have (on average 5.312322628827483) internal successors, (71132), 13390 states have internal predecessors, (71132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13391 states to 13391 states and 71132 transitions. [2021-05-22 01:59:57,678 INFO L78 Accepts]: Start accepts. Automaton has 13391 states and 71132 transitions. Word has length 33 [2021-05-22 01:59:57,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:57,679 INFO L482 AbstractCegarLoop]: Abstraction has 13391 states and 71132 transitions. [2021-05-22 01:59:57,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 13391 states and 71132 transitions. [2021-05-22 01:59:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:57,706 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:57,706 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, 1, 1, 1, 1] [2021-05-22 01:59:57,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-22 01:59:57,706 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:57,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:57,706 INFO L82 PathProgramCache]: Analyzing trace with hash 337266655, now seen corresponding path program 60 times [2021-05-22 01:59:57,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:57,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603302363] [2021-05-22 01:59:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:57,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:57,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603302363] [2021-05-22 01:59:57,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603302363] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:57,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:57,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:57,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718279050] [2021-05-22 01:59:57,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:57,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:57,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:57,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:57,903 INFO L87 Difference]: Start difference. First operand 13391 states and 71132 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:58,332 INFO L93 Difference]: Finished difference Result 31075 states and 156140 transitions. [2021-05-22 01:59:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 01:59:58,332 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 01:59:58,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:58,441 INFO L225 Difference]: With dead ends: 31075 [2021-05-22 01:59:58,442 INFO L226 Difference]: Without dead ends: 30130 [2021-05-22 01:59:58,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 212.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 01:59:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30130 states. [2021-05-22 01:59:59,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30130 to 13211. [2021-05-22 01:59:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13211 states, 13210 states have (on average 5.328993186979561) internal successors, (70396), 13210 states have internal predecessors, (70396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:59,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 70396 transitions. [2021-05-22 01:59:59,460 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 70396 transitions. Word has length 33 [2021-05-22 01:59:59,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:59,460 INFO L482 AbstractCegarLoop]: Abstraction has 13211 states and 70396 transitions. [2021-05-22 01:59:59,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:59,460 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 70396 transitions. [2021-05-22 01:59:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 01:59:59,487 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:59,487 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:59,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-22 01:59:59,487 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:59,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:59,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1924501123, now seen corresponding path program 61 times [2021-05-22 01:59:59,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:59,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984310534] [2021-05-22 01:59:59,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:59,642 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 01:59:59,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:59,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984310534] [2021-05-22 01:59:59,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984310534] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:59,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:59,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 01:59:59,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60093159] [2021-05-22 01:59:59,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 01:59:59,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:59,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 01:59:59,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:59,643 INFO L87 Difference]: Start difference. First operand 13211 states and 70396 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:00,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:00,052 INFO L93 Difference]: Finished difference Result 31003 states and 156062 transitions. [2021-05-22 02:00:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:00,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:00,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:00,149 INFO L225 Difference]: With dead ends: 31003 [2021-05-22 02:00:00,149 INFO L226 Difference]: Without dead ends: 30244 [2021-05-22 02:00:00,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 173.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30244 states. [2021-05-22 02:00:01,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30244 to 13379. [2021-05-22 02:00:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 5.320376737927941) internal successors, (71176), 13378 states have internal predecessors, (71176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71176 transitions. [2021-05-22 02:00:01,423 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71176 transitions. Word has length 33 [2021-05-22 02:00:01,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:01,423 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71176 transitions. [2021-05-22 02:00:01,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71176 transitions. [2021-05-22 02:00:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:01,458 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:01,458 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, 1, 1, 1, 1] [2021-05-22 02:00:01,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-22 02:00:01,458 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:01,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1574439293, now seen corresponding path program 62 times [2021-05-22 02:00:01,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:01,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432048871] [2021-05-22 02:00:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:01,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:01,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432048871] [2021-05-22 02:00:01,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432048871] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:01,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:01,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:01,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474710042] [2021-05-22 02:00:01,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:01,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:01,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:01,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:01,617 INFO L87 Difference]: Start difference. First operand 13379 states and 71176 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:01,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:01,857 INFO L93 Difference]: Finished difference Result 30979 states and 155858 transitions. [2021-05-22 02:00:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:01,858 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:01,959 INFO L225 Difference]: With dead ends: 30979 [2021-05-22 02:00:01,959 INFO L226 Difference]: Without dead ends: 30132 [2021-05-22 02:00:01,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:02,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30132 states. [2021-05-22 02:00:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30132 to 13267. [2021-05-22 02:00:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13267 states, 13266 states have (on average 5.326096788783356) internal successors, (70656), 13266 states have internal predecessors, (70656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70656 transitions. [2021-05-22 02:00:03,213 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70656 transitions. Word has length 33 [2021-05-22 02:00:03,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:03,213 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70656 transitions. [2021-05-22 02:00:03,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:03,213 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70656 transitions. [2021-05-22 02:00:03,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:03,241 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:03,241 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, 1, 1, 1, 1] [2021-05-22 02:00:03,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-22 02:00:03,241 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:03,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:03,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1636005983, now seen corresponding path program 63 times [2021-05-22 02:00:03,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:03,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987240734] [2021-05-22 02:00:03,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:03,387 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 02:00:03,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:03,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987240734] [2021-05-22 02:00:03,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987240734] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:03,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:03,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:03,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610245836] [2021-05-22 02:00:03,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:03,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:03,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:03,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:03,388 INFO L87 Difference]: Start difference. First operand 13267 states and 70656 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:03,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:03,640 INFO L93 Difference]: Finished difference Result 31045 states and 156167 transitions. [2021-05-22 02:00:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:03,640 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:03,741 INFO L225 Difference]: With dead ends: 31045 [2021-05-22 02:00:03,742 INFO L226 Difference]: Without dead ends: 30286 [2021-05-22 02:00:03,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 171.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:04,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30286 states. [2021-05-22 02:00:04,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30286 to 13391. [2021-05-22 02:00:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13391 states, 13390 states have (on average 5.314413741598208) internal successors, (71160), 13390 states have internal predecessors, (71160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:04,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13391 states to 13391 states and 71160 transitions. [2021-05-22 02:00:04,980 INFO L78 Accepts]: Start accepts. Automaton has 13391 states and 71160 transitions. Word has length 33 [2021-05-22 02:00:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:04,980 INFO L482 AbstractCegarLoop]: Abstraction has 13391 states and 71160 transitions. [2021-05-22 02:00:04,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:04,980 INFO L276 IsEmpty]: Start isEmpty. Operand 13391 states and 71160 transitions. [2021-05-22 02:00:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:05,009 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:05,009 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, 1, 1, 1, 1] [2021-05-22 02:00:05,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-22 02:00:05,009 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:05,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:05,009 INFO L82 PathProgramCache]: Analyzing trace with hash 93415805, now seen corresponding path program 64 times [2021-05-22 02:00:05,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:05,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418269018] [2021-05-22 02:00:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:05,168 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 02:00:05,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:05,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418269018] [2021-05-22 02:00:05,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418269018] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:05,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:05,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:05,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768871042] [2021-05-22 02:00:05,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:05,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:05,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:05,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:05,169 INFO L87 Difference]: Start difference. First operand 13391 states and 71160 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:05,407 INFO L93 Difference]: Finished difference Result 31051 states and 156060 transitions. [2021-05-22 02:00:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:05,407 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:05,511 INFO L225 Difference]: With dead ends: 31051 [2021-05-22 02:00:05,511 INFO L226 Difference]: Without dead ends: 30162 [2021-05-22 02:00:05,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 181.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30162 states. [2021-05-22 02:00:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30162 to 13267. [2021-05-22 02:00:06,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13267 states, 13266 states have (on average 5.321875471129203) internal successors, (70600), 13266 states have internal predecessors, (70600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70600 transitions. [2021-05-22 02:00:06,781 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70600 transitions. Word has length 33 [2021-05-22 02:00:06,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:06,781 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70600 transitions. [2021-05-22 02:00:06,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:06,781 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70600 transitions. [2021-05-22 02:00:06,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:06,809 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:06,809 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, 1, 1, 1, 1] [2021-05-22 02:00:06,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-22 02:00:06,809 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:06,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:06,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1606004355, now seen corresponding path program 65 times [2021-05-22 02:00:06,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:06,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743345683] [2021-05-22 02:00:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:06,980 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 02:00:06,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:06,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743345683] [2021-05-22 02:00:06,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743345683] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:06,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:06,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:06,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638208973] [2021-05-22 02:00:06,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:06,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:06,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:06,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:06,982 INFO L87 Difference]: Start difference. First operand 13267 states and 70600 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:07,237 INFO L93 Difference]: Finished difference Result 30985 states and 155875 transitions. [2021-05-22 02:00:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:07,238 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:07,341 INFO L225 Difference]: With dead ends: 30985 [2021-05-22 02:00:07,341 INFO L226 Difference]: Without dead ends: 30250 [2021-05-22 02:00:07,341 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 183.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:08,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30250 states. [2021-05-22 02:00:08,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30250 to 13379. [2021-05-22 02:00:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 5.312004783973689) internal successors, (71064), 13378 states have internal predecessors, (71064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:08,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71064 transitions. [2021-05-22 02:00:08,636 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71064 transitions. Word has length 33 [2021-05-22 02:00:08,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:08,636 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71064 transitions. [2021-05-22 02:00:08,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:08,636 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71064 transitions. [2021-05-22 02:00:08,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:08,664 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:08,664 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, 1, 1, 1, 1] [2021-05-22 02:00:08,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-22 02:00:08,664 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:08,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:08,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2071439583, now seen corresponding path program 66 times [2021-05-22 02:00:08,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:08,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911805588] [2021-05-22 02:00:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:08,818 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 02:00:08,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:08,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911805588] [2021-05-22 02:00:08,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911805588] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:08,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:08,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:08,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359580613] [2021-05-22 02:00:08,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:08,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:08,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:08,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:08,819 INFO L87 Difference]: Start difference. First operand 13379 states and 71064 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:09,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:09,309 INFO L93 Difference]: Finished difference Result 31015 states and 155872 transitions. [2021-05-22 02:00:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:09,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:09,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:09,413 INFO L225 Difference]: With dead ends: 31015 [2021-05-22 02:00:09,413 INFO L226 Difference]: Without dead ends: 30082 [2021-05-22 02:00:09,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30082 states. [2021-05-22 02:00:10,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30082 to 13211. [2021-05-22 02:00:10,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13211 states, 13210 states have (on average 5.326873580620742) internal successors, (70368), 13210 states have internal predecessors, (70368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 70368 transitions. [2021-05-22 02:00:10,489 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 70368 transitions. Word has length 33 [2021-05-22 02:00:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:10,489 INFO L482 AbstractCegarLoop]: Abstraction has 13211 states and 70368 transitions. [2021-05-22 02:00:10,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 70368 transitions. [2021-05-22 02:00:10,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:10,519 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:10,519 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, 1, 1, 1, 1] [2021-05-22 02:00:10,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-22 02:00:10,519 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:10,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:10,519 INFO L82 PathProgramCache]: Analyzing trace with hash 540641755, now seen corresponding path program 67 times [2021-05-22 02:00:10,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:10,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403670104] [2021-05-22 02:00:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:10,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:10,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403670104] [2021-05-22 02:00:10,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403670104] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:10,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:10,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:10,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989106792] [2021-05-22 02:00:10,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:10,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:10,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:10,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:10,671 INFO L87 Difference]: Start difference. First operand 13211 states and 70368 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:11,106 INFO L93 Difference]: Finished difference Result 30975 states and 155934 transitions. [2021-05-22 02:00:11,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:11,106 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:11,247 INFO L225 Difference]: With dead ends: 30975 [2021-05-22 02:00:11,248 INFO L226 Difference]: Without dead ends: 30224 [2021-05-22 02:00:11,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 185.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:12,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30224 states. [2021-05-22 02:00:12,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30224 to 13379. [2021-05-22 02:00:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 5.318283749439378) internal successors, (71148), 13378 states have internal predecessors, (71148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71148 transitions. [2021-05-22 02:00:12,760 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71148 transitions. Word has length 33 [2021-05-22 02:00:12,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:12,761 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71148 transitions. [2021-05-22 02:00:12,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:12,761 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71148 transitions. [2021-05-22 02:00:12,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:12,791 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:12,791 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, 1, 1, 1, 1] [2021-05-22 02:00:12,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-22 02:00:12,791 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:12,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:12,792 INFO L82 PathProgramCache]: Analyzing trace with hash 59739709, now seen corresponding path program 68 times [2021-05-22 02:00:12,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:12,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844355327] [2021-05-22 02:00:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:12,990 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 02:00:12,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:12,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844355327] [2021-05-22 02:00:12,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844355327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:12,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:12,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:12,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165952006] [2021-05-22 02:00:12,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:12,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:12,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:12,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:12,991 INFO L87 Difference]: Start difference. First operand 13379 states and 71148 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:13,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:13,230 INFO L93 Difference]: Finished difference Result 30959 states and 155758 transitions. [2021-05-22 02:00:13,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:13,230 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:13,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:13,341 INFO L225 Difference]: With dead ends: 30959 [2021-05-22 02:00:13,342 INFO L226 Difference]: Without dead ends: 30112 [2021-05-22 02:00:13,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 208.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30112 states. [2021-05-22 02:00:14,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30112 to 13267. [2021-05-22 02:00:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13267 states, 13266 states have (on average 5.323986129956279) internal successors, (70628), 13266 states have internal predecessors, (70628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:14,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70628 transitions. [2021-05-22 02:00:14,610 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70628 transitions. Word has length 33 [2021-05-22 02:00:14,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:14,610 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70628 transitions. [2021-05-22 02:00:14,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:14,610 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70628 transitions. [2021-05-22 02:00:14,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:14,638 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:14,638 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, 1, 1, 1, 1] [2021-05-22 02:00:14,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-22 02:00:14,638 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:14,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:14,638 INFO L82 PathProgramCache]: Analyzing trace with hash -193818435, now seen corresponding path program 69 times [2021-05-22 02:00:14,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:14,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260928083] [2021-05-22 02:00:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:14,802 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 02:00:14,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:14,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260928083] [2021-05-22 02:00:14,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260928083] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:14,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:14,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:14,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933276065] [2021-05-22 02:00:14,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:14,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:14,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:14,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:14,803 INFO L87 Difference]: Start difference. First operand 13267 states and 70628 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:15,070 INFO L93 Difference]: Finished difference Result 31013 states and 156023 transitions. [2021-05-22 02:00:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:15,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:15,178 INFO L225 Difference]: With dead ends: 31013 [2021-05-22 02:00:15,178 INFO L226 Difference]: Without dead ends: 30262 [2021-05-22 02:00:15,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 188.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30262 states. [2021-05-22 02:00:16,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30262 to 13387. [2021-05-22 02:00:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13387 states, 13386 states have (on average 5.3130135962946365) internal successors, (71120), 13386 states have internal predecessors, (71120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71120 transitions. [2021-05-22 02:00:16,449 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71120 transitions. Word has length 33 [2021-05-22 02:00:16,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:16,449 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71120 transitions. [2021-05-22 02:00:16,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71120 transitions. [2021-05-22 02:00:16,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:16,478 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:16,478 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, 1, 1, 1, 1] [2021-05-22 02:00:16,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-22 02:00:16,479 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:16,479 INFO L82 PathProgramCache]: Analyzing trace with hash 822237373, now seen corresponding path program 70 times [2021-05-22 02:00:16,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:16,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41294737] [2021-05-22 02:00:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:16,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:16,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41294737] [2021-05-22 02:00:16,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41294737] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:16,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:16,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:16,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279898756] [2021-05-22 02:00:16,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:16,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:16,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:16,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:16,667 INFO L87 Difference]: Start difference. First operand 13387 states and 71120 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:16,923 INFO L93 Difference]: Finished difference Result 31027 states and 155948 transitions. [2021-05-22 02:00:16,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:16,923 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:16,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:17,035 INFO L225 Difference]: With dead ends: 31027 [2021-05-22 02:00:17,036 INFO L226 Difference]: Without dead ends: 30142 [2021-05-22 02:00:17,036 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 200.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:17,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30142 states. [2021-05-22 02:00:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30142 to 13267. [2021-05-22 02:00:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13267 states, 13266 states have (on average 5.319764812302126) internal successors, (70572), 13266 states have internal predecessors, (70572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70572 transitions. [2021-05-22 02:00:18,306 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70572 transitions. Word has length 33 [2021-05-22 02:00:18,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:18,306 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70572 transitions. [2021-05-22 02:00:18,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70572 transitions. [2021-05-22 02:00:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:18,340 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:18,341 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, 1, 1, 1, 1] [2021-05-22 02:00:18,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-22 02:00:18,341 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:18,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:18,341 INFO L82 PathProgramCache]: Analyzing trace with hash -983204705, now seen corresponding path program 71 times [2021-05-22 02:00:18,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:18,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807640402] [2021-05-22 02:00:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:18,553 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 02:00:18,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:18,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807640402] [2021-05-22 02:00:18,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807640402] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:18,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:18,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:18,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085127755] [2021-05-22 02:00:18,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:18,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:18,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:18,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:18,554 INFO L87 Difference]: Start difference. First operand 13267 states and 70572 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:18,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:18,795 INFO L93 Difference]: Finished difference Result 30973 states and 155803 transitions. [2021-05-22 02:00:18,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:18,796 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:18,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:18,904 INFO L225 Difference]: With dead ends: 30973 [2021-05-22 02:00:18,905 INFO L226 Difference]: Without dead ends: 30238 [2021-05-22 02:00:18,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 209.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30238 states. [2021-05-22 02:00:20,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30238 to 13379. [2021-05-22 02:00:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 5.3099117954851245) internal successors, (71036), 13378 states have internal predecessors, (71036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71036 transitions. [2021-05-22 02:00:20,183 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71036 transitions. Word has length 33 [2021-05-22 02:00:20,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:20,183 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71036 transitions. [2021-05-22 02:00:20,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:20,183 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71036 transitions. [2021-05-22 02:00:20,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:20,211 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:20,212 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:20,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-22 02:00:20,212 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:20,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:20,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1348407677, now seen corresponding path program 72 times [2021-05-22 02:00:20,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:20,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200818303] [2021-05-22 02:00:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:20,376 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 02:00:20,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:20,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200818303] [2021-05-22 02:00:20,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200818303] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:20,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:20,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:20,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758051202] [2021-05-22 02:00:20,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:20,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:20,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:20,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:20,377 INFO L87 Difference]: Start difference. First operand 13379 states and 71036 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:20,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:20,808 INFO L93 Difference]: Finished difference Result 31003 states and 155800 transitions. [2021-05-22 02:00:20,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:20,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:20,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:20,921 INFO L225 Difference]: With dead ends: 31003 [2021-05-22 02:00:20,921 INFO L226 Difference]: Without dead ends: 30042 [2021-05-22 02:00:20,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 187.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:21,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30042 states. [2021-05-22 02:00:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30042 to 13183. [2021-05-22 02:00:21,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13183 states, 13182 states have (on average 5.330450614474283) internal successors, (70266), 13182 states have internal predecessors, (70266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:21,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 70266 transitions. [2021-05-22 02:00:21,994 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 70266 transitions. Word has length 33 [2021-05-22 02:00:21,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:21,995 INFO L482 AbstractCegarLoop]: Abstraction has 13183 states and 70266 transitions. [2021-05-22 02:00:21,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:21,995 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 70266 transitions. [2021-05-22 02:00:22,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:22,026 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:22,026 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, 1, 1, 1, 1] [2021-05-22 02:00:22,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-22 02:00:22,027 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:22,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:22,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1704023899, now seen corresponding path program 73 times [2021-05-22 02:00:22,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:22,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112236774] [2021-05-22 02:00:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:22,177 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 02:00:22,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:22,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112236774] [2021-05-22 02:00:22,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112236774] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:22,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:22,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:22,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753604349] [2021-05-22 02:00:22,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:22,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:22,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:22,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:22,181 INFO L87 Difference]: Start difference. First operand 13183 states and 70266 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:22,672 INFO L93 Difference]: Finished difference Result 31896 states and 160380 transitions. [2021-05-22 02:00:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:22,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:22,779 INFO L225 Difference]: With dead ends: 31896 [2021-05-22 02:00:22,779 INFO L226 Difference]: Without dead ends: 31137 [2021-05-22 02:00:22,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 187.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31137 states. [2021-05-22 02:00:23,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31137 to 13443. [2021-05-22 02:00:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13443 states, 13442 states have (on average 5.324356494569261) internal successors, (71570), 13442 states have internal predecessors, (71570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13443 states to 13443 states and 71570 transitions. [2021-05-22 02:00:24,094 INFO L78 Accepts]: Start accepts. Automaton has 13443 states and 71570 transitions. Word has length 33 [2021-05-22 02:00:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:24,094 INFO L482 AbstractCegarLoop]: Abstraction has 13443 states and 71570 transitions. [2021-05-22 02:00:24,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 13443 states and 71570 transitions. [2021-05-22 02:00:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:24,124 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:24,124 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, 1, 1, 1, 1] [2021-05-22 02:00:24,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-22 02:00:24,125 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:24,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:24,125 INFO L82 PathProgramCache]: Analyzing trace with hash 907997019, now seen corresponding path program 74 times [2021-05-22 02:00:24,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:24,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118568851] [2021-05-22 02:00:24,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:24,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:24,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118568851] [2021-05-22 02:00:24,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118568851] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:24,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:24,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:24,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484479642] [2021-05-22 02:00:24,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:24,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:24,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:24,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:24,298 INFO L87 Difference]: Start difference. First operand 13443 states and 71570 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:24,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:24,569 INFO L93 Difference]: Finished difference Result 31872 states and 160176 transitions. [2021-05-22 02:00:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:24,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:24,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:24,679 INFO L225 Difference]: With dead ends: 31872 [2021-05-22 02:00:24,680 INFO L226 Difference]: Without dead ends: 31025 [2021-05-22 02:00:24,680 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 182.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31025 states. [2021-05-22 02:00:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31025 to 13331. [2021-05-22 02:00:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13331 states, 13330 states have (on average 5.330082520630158) internal successors, (71050), 13330 states have internal predecessors, (71050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13331 states to 13331 states and 71050 transitions. [2021-05-22 02:00:26,018 INFO L78 Accepts]: Start accepts. Automaton has 13331 states and 71050 transitions. Word has length 33 [2021-05-22 02:00:26,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:26,018 INFO L482 AbstractCegarLoop]: Abstraction has 13331 states and 71050 transitions. [2021-05-22 02:00:26,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:26,018 INFO L276 IsEmpty]: Start isEmpty. Operand 13331 states and 71050 transitions. [2021-05-22 02:00:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:26,046 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:26,046 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, 1, 1, 1, 1] [2021-05-22 02:00:26,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-22 02:00:26,046 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:26,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:26,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1278047933, now seen corresponding path program 75 times [2021-05-22 02:00:26,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:26,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374893236] [2021-05-22 02:00:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:26,217 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 02:00:26,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:26,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374893236] [2021-05-22 02:00:26,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374893236] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:26,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:26,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:26,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789911887] [2021-05-22 02:00:26,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:26,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:26,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:26,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:26,219 INFO L87 Difference]: Start difference. First operand 13331 states and 71050 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:26,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:26,460 INFO L93 Difference]: Finished difference Result 32131 states and 161383 transitions. [2021-05-22 02:00:26,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:26,460 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:26,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:26,565 INFO L225 Difference]: With dead ends: 32131 [2021-05-22 02:00:26,565 INFO L226 Difference]: Without dead ends: 31372 [2021-05-22 02:00:26,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 192.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31372 states. [2021-05-22 02:00:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31372 to 13519. [2021-05-22 02:00:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13519 states, 13518 states have (on average 5.316910785619174) internal successors, (71874), 13518 states have internal predecessors, (71874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:27,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13519 states to 13519 states and 71874 transitions. [2021-05-22 02:00:27,844 INFO L78 Accepts]: Start accepts. Automaton has 13519 states and 71874 transitions. Word has length 33 [2021-05-22 02:00:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:27,844 INFO L482 AbstractCegarLoop]: Abstraction has 13519 states and 71874 transitions. [2021-05-22 02:00:27,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 13519 states and 71874 transitions. [2021-05-22 02:00:27,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:27,873 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:27,873 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, 1, 1, 1, 1] [2021-05-22 02:00:27,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-22 02:00:27,873 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:27,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1707749211, now seen corresponding path program 76 times [2021-05-22 02:00:27,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:27,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948968383] [2021-05-22 02:00:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:28,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:28,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948968383] [2021-05-22 02:00:28,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948968383] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:28,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:28,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:28,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827742310] [2021-05-22 02:00:28,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:28,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:28,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:28,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:28,068 INFO L87 Difference]: Start difference. First operand 13519 states and 71874 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:28,327 INFO L93 Difference]: Finished difference Result 32266 states and 161854 transitions. [2021-05-22 02:00:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:28,328 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:28,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:28,441 INFO L225 Difference]: With dead ends: 32266 [2021-05-22 02:00:28,441 INFO L226 Difference]: Without dead ends: 31184 [2021-05-22 02:00:28,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 191.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31184 states. [2021-05-22 02:00:29,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31184 to 13331. [2021-05-22 02:00:29,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13331 states, 13330 states have (on average 5.323480870217554) internal successors, (70962), 13330 states have internal predecessors, (70962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13331 states to 13331 states and 70962 transitions. [2021-05-22 02:00:29,794 INFO L78 Accepts]: Start accepts. Automaton has 13331 states and 70962 transitions. Word has length 33 [2021-05-22 02:00:29,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:29,796 INFO L482 AbstractCegarLoop]: Abstraction has 13331 states and 70962 transitions. [2021-05-22 02:00:29,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:29,796 INFO L276 IsEmpty]: Start isEmpty. Operand 13331 states and 70962 transitions. [2021-05-22 02:00:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:29,833 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:29,833 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, 1, 1, 1, 1] [2021-05-22 02:00:29,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-22 02:00:29,833 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:29,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:29,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1954011301, now seen corresponding path program 77 times [2021-05-22 02:00:29,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:29,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985949373] [2021-05-22 02:00:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:30,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:30,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985949373] [2021-05-22 02:00:30,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985949373] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:30,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:30,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:30,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833034878] [2021-05-22 02:00:30,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:30,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:30,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:30,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:30,017 INFO L87 Difference]: Start difference. First operand 13331 states and 70962 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:30,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:30,263 INFO L93 Difference]: Finished difference Result 32071 states and 161059 transitions. [2021-05-22 02:00:30,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:30,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:30,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:30,633 INFO L225 Difference]: With dead ends: 32071 [2021-05-22 02:00:30,633 INFO L226 Difference]: Without dead ends: 31336 [2021-05-22 02:00:30,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 209.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31336 states. [2021-05-22 02:00:31,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31336 to 13507. [2021-05-22 02:00:31,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13507 states, 13506 states have (on average 5.312157559603139) internal successors, (71746), 13506 states have internal predecessors, (71746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 71746 transitions. [2021-05-22 02:00:31,783 INFO L78 Accepts]: Start accepts. Automaton has 13507 states and 71746 transitions. Word has length 33 [2021-05-22 02:00:31,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:31,783 INFO L482 AbstractCegarLoop]: Abstraction has 13507 states and 71746 transitions. [2021-05-22 02:00:31,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:31,783 INFO L276 IsEmpty]: Start isEmpty. Operand 13507 states and 71746 transitions. [2021-05-22 02:00:31,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:31,815 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:31,815 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, 1, 1, 1, 1] [2021-05-22 02:00:31,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-22 02:00:31,816 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:31,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:31,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1878476995, now seen corresponding path program 78 times [2021-05-22 02:00:31,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:31,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263462382] [2021-05-22 02:00:31,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:32,021 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 02:00:32,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:32,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263462382] [2021-05-22 02:00:32,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263462382] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:32,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:32,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:32,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760229825] [2021-05-22 02:00:32,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:32,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:32,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:32,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:32,027 INFO L87 Difference]: Start difference. First operand 13507 states and 71746 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:32,516 INFO L93 Difference]: Finished difference Result 32230 states and 161634 transitions. [2021-05-22 02:00:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:32,516 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:32,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:32,630 INFO L225 Difference]: With dead ends: 32230 [2021-05-22 02:00:32,630 INFO L226 Difference]: Without dead ends: 31072 [2021-05-22 02:00:32,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 202.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31072 states. [2021-05-22 02:00:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31072 to 13243. [2021-05-22 02:00:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13243 states, 13242 states have (on average 5.329255399486482) internal successors, (70570), 13242 states have internal predecessors, (70570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70570 transitions. [2021-05-22 02:00:33,755 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70570 transitions. Word has length 33 [2021-05-22 02:00:33,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:33,755 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70570 transitions. [2021-05-22 02:00:33,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70570 transitions. [2021-05-22 02:00:33,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:33,939 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:33,940 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, 1, 1, 1, 1] [2021-05-22 02:00:33,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-22 02:00:33,940 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:33,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:33,940 INFO L82 PathProgramCache]: Analyzing trace with hash -341157187, now seen corresponding path program 79 times [2021-05-22 02:00:33,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:33,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328775482] [2021-05-22 02:00:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:34,079 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 02:00:34,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:34,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328775482] [2021-05-22 02:00:34,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328775482] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:34,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:34,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:34,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075069910] [2021-05-22 02:00:34,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:34,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:34,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:34,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:34,080 INFO L87 Difference]: Start difference. First operand 13243 states and 70570 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:34,333 INFO L93 Difference]: Finished difference Result 31607 states and 158942 transitions. [2021-05-22 02:00:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:34,333 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:34,443 INFO L225 Difference]: With dead ends: 31607 [2021-05-22 02:00:34,444 INFO L226 Difference]: Without dead ends: 30848 [2021-05-22 02:00:34,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30848 states. [2021-05-22 02:00:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30848 to 13411. [2021-05-22 02:00:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13411 states, 13410 states have (on average 5.320656226696495) internal successors, (71350), 13410 states have internal predecessors, (71350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13411 states to 13411 states and 71350 transitions. [2021-05-22 02:00:35,727 INFO L78 Accepts]: Start accepts. Automaton has 13411 states and 71350 transitions. Word has length 33 [2021-05-22 02:00:35,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:35,728 INFO L482 AbstractCegarLoop]: Abstraction has 13411 states and 71350 transitions. [2021-05-22 02:00:35,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:35,728 INFO L276 IsEmpty]: Start isEmpty. Operand 13411 states and 71350 transitions. [2021-05-22 02:00:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:35,757 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:35,757 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, 1, 1, 1, 1] [2021-05-22 02:00:35,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-05-22 02:00:35,758 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:35,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:35,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1137184067, now seen corresponding path program 80 times [2021-05-22 02:00:35,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:35,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457851816] [2021-05-22 02:00:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:35,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:35,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457851816] [2021-05-22 02:00:35,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457851816] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:35,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:35,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:35,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799913648] [2021-05-22 02:00:35,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:35,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:35,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:35,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:35,900 INFO L87 Difference]: Start difference. First operand 13411 states and 71350 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:36,127 INFO L93 Difference]: Finished difference Result 31583 states and 158738 transitions. [2021-05-22 02:00:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:36,128 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:36,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:36,231 INFO L225 Difference]: With dead ends: 31583 [2021-05-22 02:00:36,231 INFO L226 Difference]: Without dead ends: 30736 [2021-05-22 02:00:36,232 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30736 states. [2021-05-22 02:00:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30736 to 13299. [2021-05-22 02:00:37,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13299 states, 13298 states have (on average 5.326364866897277) internal successors, (70830), 13298 states have internal predecessors, (70830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13299 states to 13299 states and 70830 transitions. [2021-05-22 02:00:37,466 INFO L78 Accepts]: Start accepts. Automaton has 13299 states and 70830 transitions. Word has length 33 [2021-05-22 02:00:37,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:37,466 INFO L482 AbstractCegarLoop]: Abstraction has 13299 states and 70830 transitions. [2021-05-22 02:00:37,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 13299 states and 70830 transitions. [2021-05-22 02:00:37,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:37,496 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:37,496 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:37,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-22 02:00:37,496 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:37,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:37,497 INFO L82 PathProgramCache]: Analyzing trace with hash -104108483, now seen corresponding path program 81 times [2021-05-22 02:00:37,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:37,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003168299] [2021-05-22 02:00:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:37,634 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 02:00:37,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:37,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003168299] [2021-05-22 02:00:37,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003168299] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:37,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:37,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:37,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401182756] [2021-05-22 02:00:37,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:37,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:37,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:37,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:37,635 INFO L87 Difference]: Start difference. First operand 13299 states and 70830 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:37,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:37,864 INFO L93 Difference]: Finished difference Result 31649 states and 159047 transitions. [2021-05-22 02:00:37,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:37,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:37,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:37,968 INFO L225 Difference]: With dead ends: 31649 [2021-05-22 02:00:37,968 INFO L226 Difference]: Without dead ends: 30890 [2021-05-22 02:00:37,968 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30890 states. [2021-05-22 02:00:39,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30890 to 13423. [2021-05-22 02:00:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13423 states, 13422 states have (on average 5.314707197139025) internal successors, (71334), 13422 states have internal predecessors, (71334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13423 states to 13423 states and 71334 transitions. [2021-05-22 02:00:39,261 INFO L78 Accepts]: Start accepts. Automaton has 13423 states and 71334 transitions. Word has length 33 [2021-05-22 02:00:39,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:39,261 INFO L482 AbstractCegarLoop]: Abstraction has 13423 states and 71334 transitions. [2021-05-22 02:00:39,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:39,262 INFO L276 IsEmpty]: Start isEmpty. Operand 13423 states and 71334 transitions. [2021-05-22 02:00:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:39,290 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:39,290 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:39,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-22 02:00:39,290 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:39,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:39,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1646698661, now seen corresponding path program 82 times [2021-05-22 02:00:39,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:39,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930042435] [2021-05-22 02:00:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:39,427 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 02:00:39,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:39,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930042435] [2021-05-22 02:00:39,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930042435] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:39,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:39,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:39,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358554488] [2021-05-22 02:00:39,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:39,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:39,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:39,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:39,429 INFO L87 Difference]: Start difference. First operand 13423 states and 71334 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:39,671 INFO L93 Difference]: Finished difference Result 31655 states and 158940 transitions. [2021-05-22 02:00:39,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:39,671 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:39,775 INFO L225 Difference]: With dead ends: 31655 [2021-05-22 02:00:39,775 INFO L226 Difference]: Without dead ends: 30766 [2021-05-22 02:00:39,776 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:40,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30766 states. [2021-05-22 02:00:40,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30766 to 13299. [2021-05-22 02:00:41,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13299 states, 13298 states have (on average 5.32215370732441) internal successors, (70774), 13298 states have internal predecessors, (70774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13299 states to 13299 states and 70774 transitions. [2021-05-22 02:00:41,062 INFO L78 Accepts]: Start accepts. Automaton has 13299 states and 70774 transitions. Word has length 33 [2021-05-22 02:00:41,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:41,062 INFO L482 AbstractCegarLoop]: Abstraction has 13299 states and 70774 transitions. [2021-05-22 02:00:41,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:41,063 INFO L276 IsEmpty]: Start isEmpty. Operand 13299 states and 70774 transitions. [2021-05-22 02:00:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:41,091 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:41,091 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, 1, 1, 1, 1] [2021-05-22 02:00:41,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-22 02:00:41,091 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:41,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:41,091 INFO L82 PathProgramCache]: Analyzing trace with hash 948848475, now seen corresponding path program 83 times [2021-05-22 02:00:41,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:41,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363091051] [2021-05-22 02:00:41,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:41,242 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 02:00:41,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:41,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363091051] [2021-05-22 02:00:41,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363091051] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:41,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:41,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:41,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176784669] [2021-05-22 02:00:41,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:41,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:41,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:41,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:41,243 INFO L87 Difference]: Start difference. First operand 13299 states and 70774 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:41,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:41,481 INFO L93 Difference]: Finished difference Result 31589 states and 158755 transitions. [2021-05-22 02:00:41,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:41,481 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:41,837 INFO L225 Difference]: With dead ends: 31589 [2021-05-22 02:00:41,837 INFO L226 Difference]: Without dead ends: 30854 [2021-05-22 02:00:41,837 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30854 states. [2021-05-22 02:00:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30854 to 13411. [2021-05-22 02:00:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13411 states, 13410 states have (on average 5.312304250559284) internal successors, (71238), 13410 states have internal predecessors, (71238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13411 states to 13411 states and 71238 transitions. [2021-05-22 02:00:42,896 INFO L78 Accepts]: Start accepts. Automaton has 13411 states and 71238 transitions. Word has length 33 [2021-05-22 02:00:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:42,896 INFO L482 AbstractCegarLoop]: Abstraction has 13411 states and 71238 transitions. [2021-05-22 02:00:42,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 13411 states and 71238 transitions. [2021-05-22 02:00:42,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:42,925 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:42,925 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, 1, 1, 1, 1] [2021-05-22 02:00:42,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-05-22 02:00:42,925 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:42,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:42,925 INFO L82 PathProgramCache]: Analyzing trace with hash 331325117, now seen corresponding path program 84 times [2021-05-22 02:00:42,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:42,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084977980] [2021-05-22 02:00:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:43,117 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 02:00:43,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:43,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084977980] [2021-05-22 02:00:43,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084977980] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:43,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:43,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:43,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708537734] [2021-05-22 02:00:43,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:43,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:43,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:43,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:43,119 INFO L87 Difference]: Start difference. First operand 13411 states and 71238 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:43,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:43,575 INFO L93 Difference]: Finished difference Result 31619 states and 158752 transitions. [2021-05-22 02:00:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:43,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:43,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:43,683 INFO L225 Difference]: With dead ends: 31619 [2021-05-22 02:00:43,683 INFO L226 Difference]: Without dead ends: 30686 [2021-05-22 02:00:43,684 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 213.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:44,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30686 states. [2021-05-22 02:00:44,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30686 to 13243. [2021-05-22 02:00:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13243 states, 13242 states have (on average 5.327140915269597) internal successors, (70542), 13242 states have internal predecessors, (70542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70542 transitions. [2021-05-22 02:00:44,754 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70542 transitions. Word has length 33 [2021-05-22 02:00:44,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:44,754 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70542 transitions. [2021-05-22 02:00:44,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:44,754 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70542 transitions. [2021-05-22 02:00:44,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:44,924 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:44,925 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, 1, 1, 1, 1] [2021-05-22 02:00:44,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-05-22 02:00:44,925 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:44,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:44,925 INFO L82 PathProgramCache]: Analyzing trace with hash -163558113, now seen corresponding path program 85 times [2021-05-22 02:00:44,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:44,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318859528] [2021-05-22 02:00:44,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:45,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:45,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318859528] [2021-05-22 02:00:45,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318859528] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:45,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:45,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:45,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141644729] [2021-05-22 02:00:45,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:45,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:45,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:45,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:45,093 INFO L87 Difference]: Start difference. First operand 13243 states and 70542 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:45,342 INFO L93 Difference]: Finished difference Result 32290 states and 162019 transitions. [2021-05-22 02:00:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:45,342 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:45,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:45,449 INFO L225 Difference]: With dead ends: 32290 [2021-05-22 02:00:45,449 INFO L226 Difference]: Without dead ends: 31531 [2021-05-22 02:00:45,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 184.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:46,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31531 states. [2021-05-22 02:00:46,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31531 to 13557. [2021-05-22 02:00:46,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13557 states, 13556 states have (on average 5.313588079079374) internal successors, (72031), 13556 states have internal predecessors, (72031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13557 states to 13557 states and 72031 transitions. [2021-05-22 02:00:46,717 INFO L78 Accepts]: Start accepts. Automaton has 13557 states and 72031 transitions. Word has length 33 [2021-05-22 02:00:46,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:46,717 INFO L482 AbstractCegarLoop]: Abstraction has 13557 states and 72031 transitions. [2021-05-22 02:00:46,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:46,717 INFO L276 IsEmpty]: Start isEmpty. Operand 13557 states and 72031 transitions. [2021-05-22 02:00:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:46,746 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:46,746 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, 1, 1, 1, 1] [2021-05-22 02:00:46,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-05-22 02:00:46,746 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:46,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:46,747 INFO L82 PathProgramCache]: Analyzing trace with hash 266143165, now seen corresponding path program 86 times [2021-05-22 02:00:46,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:46,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364133736] [2021-05-22 02:00:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:46,901 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 02:00:46,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:46,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364133736] [2021-05-22 02:00:46,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364133736] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:46,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:46,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:46,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705033421] [2021-05-22 02:00:46,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:46,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:46,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:46,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:46,902 INFO L87 Difference]: Start difference. First operand 13557 states and 72031 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:47,113 INFO L93 Difference]: Finished difference Result 32425 states and 162490 transitions. [2021-05-22 02:00:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:47,114 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:47,220 INFO L225 Difference]: With dead ends: 32425 [2021-05-22 02:00:47,220 INFO L226 Difference]: Without dead ends: 31343 [2021-05-22 02:00:47,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 159.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31343 states. [2021-05-22 02:00:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31343 to 13369. [2021-05-22 02:00:48,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13369 states, 13368 states have (on average 5.319643925792938) internal successors, (71113), 13368 states have internal predecessors, (71113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 71113 transitions. [2021-05-22 02:00:48,549 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 71113 transitions. Word has length 33 [2021-05-22 02:00:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:48,549 INFO L482 AbstractCegarLoop]: Abstraction has 13369 states and 71113 transitions. [2021-05-22 02:00:48,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 71113 transitions. [2021-05-22 02:00:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:48,580 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:48,580 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, 1, 1, 1, 1] [2021-05-22 02:00:48,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-22 02:00:48,581 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:48,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1294488957, now seen corresponding path program 87 times [2021-05-22 02:00:48,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:48,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136920766] [2021-05-22 02:00:48,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:48,741 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 02:00:48,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:48,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136920766] [2021-05-22 02:00:48,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136920766] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:48,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:48,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:48,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933309714] [2021-05-22 02:00:48,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:48,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:48,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:48,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:48,742 INFO L87 Difference]: Start difference. First operand 13369 states and 71113 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:48,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:48,987 INFO L93 Difference]: Finished difference Result 32097 states and 161027 transitions. [2021-05-22 02:00:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:48,987 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:48,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:49,094 INFO L225 Difference]: With dead ends: 32097 [2021-05-22 02:00:49,094 INFO L226 Difference]: Without dead ends: 31338 [2021-05-22 02:00:49,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 172.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:50,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31338 states. [2021-05-22 02:00:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31338 to 13493. [2021-05-22 02:00:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13493 states, 13492 states have (on average 5.308108508745923) internal successors, (71617), 13492 states have internal predecessors, (71617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:50,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13493 states to 13493 states and 71617 transitions. [2021-05-22 02:00:50,427 INFO L78 Accepts]: Start accepts. Automaton has 13493 states and 71617 transitions. Word has length 33 [2021-05-22 02:00:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:50,427 INFO L482 AbstractCegarLoop]: Abstraction has 13493 states and 71617 transitions. [2021-05-22 02:00:50,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 13493 states and 71617 transitions. [2021-05-22 02:00:50,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:50,456 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:50,456 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, 1, 1, 1, 1] [2021-05-22 02:00:50,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-05-22 02:00:50,456 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:50,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:50,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1307258429, now seen corresponding path program 88 times [2021-05-22 02:00:50,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:50,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117584471] [2021-05-22 02:00:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:50,607 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 02:00:50,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:50,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117584471] [2021-05-22 02:00:50,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117584471] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:50,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:50,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:50,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472658372] [2021-05-22 02:00:50,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:50,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:50,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:50,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:50,608 INFO L87 Difference]: Start difference. First operand 13493 states and 71617 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:50,891 INFO L93 Difference]: Finished difference Result 32103 states and 160920 transitions. [2021-05-22 02:00:50,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:50,892 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:51,003 INFO L225 Difference]: With dead ends: 32103 [2021-05-22 02:00:51,003 INFO L226 Difference]: Without dead ends: 31214 [2021-05-22 02:00:51,003 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:51,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31214 states. [2021-05-22 02:00:52,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31214 to 13369. [2021-05-22 02:00:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13369 states, 13368 states have (on average 5.315005984440455) internal successors, (71051), 13368 states have internal predecessors, (71051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:52,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 71051 transitions. [2021-05-22 02:00:52,303 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 71051 transitions. Word has length 33 [2021-05-22 02:00:52,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:52,303 INFO L482 AbstractCegarLoop]: Abstraction has 13369 states and 71051 transitions. [2021-05-22 02:00:52,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 71051 transitions. [2021-05-22 02:00:52,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:52,332 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:52,332 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, 1, 1, 1, 1] [2021-05-22 02:00:52,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-22 02:00:52,332 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:52,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:52,332 INFO L82 PathProgramCache]: Analyzing trace with hash -399300773, now seen corresponding path program 89 times [2021-05-22 02:00:52,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:52,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474436966] [2021-05-22 02:00:52,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:52,486 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 02:00:52,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:52,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474436966] [2021-05-22 02:00:52,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474436966] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:52,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:52,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:52,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542380403] [2021-05-22 02:00:52,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:52,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:52,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:52,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:52,488 INFO L87 Difference]: Start difference. First operand 13369 states and 71051 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:52,702 INFO L93 Difference]: Finished difference Result 32498 states and 162741 transitions. [2021-05-22 02:00:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:52,702 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:52,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:53,064 INFO L225 Difference]: With dead ends: 32498 [2021-05-22 02:00:53,064 INFO L226 Difference]: Without dead ends: 31604 [2021-05-22 02:00:53,064 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31604 states. [2021-05-22 02:00:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31604 to 13624. [2021-05-22 02:00:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13624 states, 13623 states have (on average 5.290611465903252) internal successors, (72074), 13623 states have internal predecessors, (72074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:54,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 72074 transitions. [2021-05-22 02:00:54,228 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 72074 transitions. Word has length 33 [2021-05-22 02:00:54,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:54,228 INFO L482 AbstractCegarLoop]: Abstraction has 13624 states and 72074 transitions. [2021-05-22 02:00:54,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 72074 transitions. [2021-05-22 02:00:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:54,258 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:54,258 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:54,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-05-22 02:00:54,259 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:54,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:54,259 INFO L82 PathProgramCache]: Analyzing trace with hash -880202819, now seen corresponding path program 90 times [2021-05-22 02:00:54,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:54,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688028591] [2021-05-22 02:00:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:54,410 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 02:00:54,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:54,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688028591] [2021-05-22 02:00:54,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688028591] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:54,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:54,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:54,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828395134] [2021-05-22 02:00:54,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:54,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:54,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:54,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:54,411 INFO L87 Difference]: Start difference. First operand 13624 states and 72074 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:54,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:54,858 INFO L93 Difference]: Finished difference Result 32369 states and 161972 transitions. [2021-05-22 02:00:54,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:54,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:54,970 INFO L225 Difference]: With dead ends: 32369 [2021-05-22 02:00:54,970 INFO L226 Difference]: Without dead ends: 31223 [2021-05-22 02:00:54,970 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 172.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:55,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31223 states. [2021-05-22 02:00:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31223 to 13243. [2021-05-22 02:00:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13243 states, 13242 states have (on average 5.322609877661985) internal successors, (70482), 13242 states have internal predecessors, (70482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70482 transitions. [2021-05-22 02:00:56,294 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70482 transitions. Word has length 33 [2021-05-22 02:00:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:56,294 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70482 transitions. [2021-05-22 02:00:56,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70482 transitions. [2021-05-22 02:00:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:56,326 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:56,326 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, 1, 1, 1, 1] [2021-05-22 02:00:56,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-05-22 02:00:56,326 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:56,326 INFO L82 PathProgramCache]: Analyzing trace with hash -343642277, now seen corresponding path program 91 times [2021-05-22 02:00:56,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:56,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974095514] [2021-05-22 02:00:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:56,518 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 02:00:56,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:56,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974095514] [2021-05-22 02:00:56,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974095514] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:56,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:56,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:56,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216892658] [2021-05-22 02:00:56,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:56,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:56,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:56,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:56,519 INFO L87 Difference]: Start difference. First operand 13243 states and 70482 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:56,760 INFO L93 Difference]: Finished difference Result 32176 states and 161498 transitions. [2021-05-22 02:00:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:56,867 INFO L225 Difference]: With dead ends: 32176 [2021-05-22 02:00:56,868 INFO L226 Difference]: Without dead ends: 31441 [2021-05-22 02:00:56,868 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 202.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31441 states. [2021-05-22 02:00:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31441 to 13539. [2021-05-22 02:00:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13539 states, 13538 states have (on average 5.311124242871916) internal successors, (71902), 13538 states have internal predecessors, (71902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 71902 transitions. [2021-05-22 02:00:58,234 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 71902 transitions. Word has length 33 [2021-05-22 02:00:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:58,234 INFO L482 AbstractCegarLoop]: Abstraction has 13539 states and 71902 transitions. [2021-05-22 02:00:58,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 71902 transitions. [2021-05-22 02:00:58,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:00:58,263 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:58,263 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, 1, 1, 1, 1] [2021-05-22 02:00:58,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-05-22 02:00:58,263 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:58,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:58,264 INFO L82 PathProgramCache]: Analyzing trace with hash -268107971, now seen corresponding path program 92 times [2021-05-22 02:00:58,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:58,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989310025] [2021-05-22 02:00:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:58,432 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 02:00:58,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:58,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989310025] [2021-05-22 02:00:58,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989310025] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:58,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:58,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:00:58,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349998168] [2021-05-22 02:00:58,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:00:58,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:58,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:00:58,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:58,433 INFO L87 Difference]: Start difference. First operand 13539 states and 71902 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:58,678 INFO L93 Difference]: Finished difference Result 32335 states and 162073 transitions. [2021-05-22 02:00:58,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:00:58,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:00:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:58,785 INFO L225 Difference]: With dead ends: 32335 [2021-05-22 02:00:58,785 INFO L226 Difference]: Without dead ends: 31265 [2021-05-22 02:00:58,786 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:00:59,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31265 states. [2021-05-22 02:01:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31265 to 13363. [2021-05-22 02:01:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.315820984882502) internal successors, (71030), 13362 states have internal predecessors, (71030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71030 transitions. [2021-05-22 02:01:00,089 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71030 transitions. Word has length 33 [2021-05-22 02:01:00,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:00,089 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71030 transitions. [2021-05-22 02:01:00,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:00,089 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71030 transitions. [2021-05-22 02:01:00,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:00,118 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:00,118 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, 1, 1, 1, 1] [2021-05-22 02:01:00,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-05-22 02:01:00,118 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:00,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:00,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1365959485, now seen corresponding path program 93 times [2021-05-22 02:01:00,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:00,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075712608] [2021-05-22 02:01:00,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:00,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:00,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075712608] [2021-05-22 02:01:00,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075712608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:00,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:00,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:00,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404464595] [2021-05-22 02:01:00,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:00,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:00,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:00,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:00,287 INFO L87 Difference]: Start difference. First operand 13363 states and 71030 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:00,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:00,522 INFO L93 Difference]: Finished difference Result 31983 states and 160512 transitions. [2021-05-22 02:01:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:00,523 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:00,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:00,631 INFO L225 Difference]: With dead ends: 31983 [2021-05-22 02:01:00,632 INFO L226 Difference]: Without dead ends: 31248 [2021-05-22 02:01:00,632 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 188.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31248 states. [2021-05-22 02:01:01,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31248 to 13475. [2021-05-22 02:01:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13475 states, 13474 states have (on average 5.306070951462075) internal successors, (71494), 13474 states have internal predecessors, (71494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13475 states to 13475 states and 71494 transitions. [2021-05-22 02:01:01,932 INFO L78 Accepts]: Start accepts. Automaton has 13475 states and 71494 transitions. Word has length 33 [2021-05-22 02:01:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:01,933 INFO L482 AbstractCegarLoop]: Abstraction has 13475 states and 71494 transitions. [2021-05-22 02:01:01,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 13475 states and 71494 transitions. [2021-05-22 02:01:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:01,961 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:01,962 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, 1, 1, 1, 1] [2021-05-22 02:01:01,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-05-22 02:01:01,962 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:01,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:01,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1279600963, now seen corresponding path program 94 times [2021-05-22 02:01:01,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:01,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025258339] [2021-05-22 02:01:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:02,132 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 02:01:02,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:02,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025258339] [2021-05-22 02:01:02,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025258339] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:02,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:02,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:02,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115441737] [2021-05-22 02:01:02,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:02,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:02,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:02,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:02,133 INFO L87 Difference]: Start difference. First operand 13475 states and 71494 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:02,372 INFO L93 Difference]: Finished difference Result 32013 states and 160509 transitions. [2021-05-22 02:01:02,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:02,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:02,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:02,479 INFO L225 Difference]: With dead ends: 32013 [2021-05-22 02:01:02,480 INFO L226 Difference]: Without dead ends: 31136 [2021-05-22 02:01:02,480 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 195.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31136 states. [2021-05-22 02:01:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31136 to 13363. [2021-05-22 02:01:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.311629995509654) internal successors, (70974), 13362 states have internal predecessors, (70974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 70974 transitions. [2021-05-22 02:01:03,793 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 70974 transitions. Word has length 33 [2021-05-22 02:01:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:03,793 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 70974 transitions. [2021-05-22 02:01:03,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 70974 transitions. [2021-05-22 02:01:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:03,822 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:03,822 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:03,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-05-22 02:01:03,822 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:03,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:03,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1002568161, now seen corresponding path program 95 times [2021-05-22 02:01:03,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:03,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018491825] [2021-05-22 02:01:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:03,983 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 02:01:03,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:03,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018491825] [2021-05-22 02:01:03,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018491825] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:03,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:03,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:03,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078873643] [2021-05-22 02:01:03,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:03,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:03,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:03,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:03,984 INFO L87 Difference]: Start difference. First operand 13363 states and 70974 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:04,386 INFO L93 Difference]: Finished difference Result 32444 states and 162468 transitions. [2021-05-22 02:01:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:04,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:04,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:04,510 INFO L225 Difference]: With dead ends: 32444 [2021-05-22 02:01:04,510 INFO L226 Difference]: Without dead ends: 31550 [2021-05-22 02:01:04,510 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 157.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:05,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31550 states. [2021-05-22 02:01:05,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31550 to 13618. [2021-05-22 02:01:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13618 states, 13617 states have (on average 5.28728794888742) internal successors, (71997), 13617 states have internal predecessors, (71997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13618 states to 13618 states and 71997 transitions. [2021-05-22 02:01:05,618 INFO L78 Accepts]: Start accepts. Automaton has 13618 states and 71997 transitions. Word has length 33 [2021-05-22 02:01:05,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:05,618 INFO L482 AbstractCegarLoop]: Abstraction has 13618 states and 71997 transitions. [2021-05-22 02:01:05,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:05,618 INFO L276 IsEmpty]: Start isEmpty. Operand 13618 states and 71997 transitions. [2021-05-22 02:01:05,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:05,647 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:05,647 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, 1, 1, 1, 1] [2021-05-22 02:01:05,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-05-22 02:01:05,647 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:05,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:05,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1269337597, now seen corresponding path program 96 times [2021-05-22 02:01:05,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:05,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296986531] [2021-05-22 02:01:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:05,949 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 02:01:05,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:05,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296986531] [2021-05-22 02:01:05,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296986531] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:05,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:05,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:05,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372799583] [2021-05-22 02:01:05,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:05,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:05,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:05,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:05,950 INFO L87 Difference]: Start difference. First operand 13618 states and 71997 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:06,217 INFO L93 Difference]: Finished difference Result 32315 states and 161699 transitions. [2021-05-22 02:01:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:06,218 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:06,322 INFO L225 Difference]: With dead ends: 32315 [2021-05-22 02:01:06,322 INFO L226 Difference]: Without dead ends: 31115 [2021-05-22 02:01:06,322 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 325.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31115 states. [2021-05-22 02:01:07,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31115 to 13183. [2021-05-22 02:01:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13183 states, 13182 states have (on average 5.328174783796086) internal successors, (70236), 13182 states have internal predecessors, (70236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 70236 transitions. [2021-05-22 02:01:07,591 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 70236 transitions. Word has length 33 [2021-05-22 02:01:07,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:07,591 INFO L482 AbstractCegarLoop]: Abstraction has 13183 states and 70236 transitions. [2021-05-22 02:01:07,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:07,591 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 70236 transitions. [2021-05-22 02:01:07,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:07,619 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:07,619 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, 1, 1, 1, 1] [2021-05-22 02:01:07,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-22 02:01:07,619 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:07,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:07,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1050695737, now seen corresponding path program 97 times [2021-05-22 02:01:07,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:07,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762114368] [2021-05-22 02:01:07,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:07,829 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 02:01:07,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:07,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762114368] [2021-05-22 02:01:07,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762114368] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:07,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:07,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:07,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132907336] [2021-05-22 02:01:07,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:07,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:07,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:07,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:07,830 INFO L87 Difference]: Start difference. First operand 13183 states and 70236 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:08,066 INFO L93 Difference]: Finished difference Result 31850 states and 160181 transitions. [2021-05-22 02:01:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:08,067 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:08,174 INFO L225 Difference]: With dead ends: 31850 [2021-05-22 02:01:08,174 INFO L226 Difference]: Without dead ends: 31099 [2021-05-22 02:01:08,174 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 230.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31099 states. [2021-05-22 02:01:09,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31099 to 13443. [2021-05-22 02:01:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13443 states, 13442 states have (on average 5.322124683826812) internal successors, (71540), 13442 states have internal predecessors, (71540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13443 states to 13443 states and 71540 transitions. [2021-05-22 02:01:09,440 INFO L78 Accepts]: Start accepts. Automaton has 13443 states and 71540 transitions. Word has length 33 [2021-05-22 02:01:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:09,441 INFO L482 AbstractCegarLoop]: Abstraction has 13443 states and 71540 transitions. [2021-05-22 02:01:09,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:09,441 INFO L276 IsEmpty]: Start isEmpty. Operand 13443 states and 71540 transitions. [2021-05-22 02:01:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:09,469 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:09,469 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, 1, 1, 1, 1] [2021-05-22 02:01:09,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-05-22 02:01:09,469 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:09,470 INFO L82 PathProgramCache]: Analyzing trace with hash 569793691, now seen corresponding path program 98 times [2021-05-22 02:01:09,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:09,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36272741] [2021-05-22 02:01:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:09,648 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 02:01:09,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:09,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36272741] [2021-05-22 02:01:09,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36272741] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:09,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:09,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:09,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042328436] [2021-05-22 02:01:09,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:09,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:09,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:09,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:09,649 INFO L87 Difference]: Start difference. First operand 13443 states and 71540 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:09,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:09,894 INFO L93 Difference]: Finished difference Result 31834 states and 160005 transitions. [2021-05-22 02:01:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:09,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:09,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:10,001 INFO L225 Difference]: With dead ends: 31834 [2021-05-22 02:01:10,001 INFO L226 Difference]: Without dead ends: 30987 [2021-05-22 02:01:10,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 205.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:10,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30987 states. [2021-05-22 02:01:11,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30987 to 13331. [2021-05-22 02:01:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13331 states, 13330 states have (on average 5.327831957989497) internal successors, (71020), 13330 states have internal predecessors, (71020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13331 states to 13331 states and 71020 transitions. [2021-05-22 02:01:11,304 INFO L78 Accepts]: Start accepts. Automaton has 13331 states and 71020 transitions. Word has length 33 [2021-05-22 02:01:11,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:11,305 INFO L482 AbstractCegarLoop]: Abstraction has 13331 states and 71020 transitions. [2021-05-22 02:01:11,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 13331 states and 71020 transitions. [2021-05-22 02:01:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:11,334 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:11,334 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:11,334 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-05-22 02:01:11,334 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:11,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:11,334 INFO L82 PathProgramCache]: Analyzing trace with hash 624719771, now seen corresponding path program 99 times [2021-05-22 02:01:11,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:11,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700001278] [2021-05-22 02:01:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:11,519 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 02:01:11,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:11,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700001278] [2021-05-22 02:01:11,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700001278] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:11,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:11,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:11,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005490581] [2021-05-22 02:01:11,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:11,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:11,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:11,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:11,520 INFO L87 Difference]: Start difference. First operand 13331 states and 71020 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:11,767 INFO L93 Difference]: Finished difference Result 32081 states and 161168 transitions. [2021-05-22 02:01:11,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:11,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:11,875 INFO L225 Difference]: With dead ends: 32081 [2021-05-22 02:01:11,875 INFO L226 Difference]: Without dead ends: 31330 [2021-05-22 02:01:11,875 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 207.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:12,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31330 states. [2021-05-22 02:01:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31330 to 13515. [2021-05-22 02:01:13,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13515 states, 13514 states have (on average 5.315376646440728) internal successors, (71832), 13514 states have internal predecessors, (71832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13515 states to 13515 states and 71832 transitions. [2021-05-22 02:01:13,224 INFO L78 Accepts]: Start accepts. Automaton has 13515 states and 71832 transitions. Word has length 33 [2021-05-22 02:01:13,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:13,224 INFO L482 AbstractCegarLoop]: Abstraction has 13515 states and 71832 transitions. [2021-05-22 02:01:13,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 13515 states and 71832 transitions. [2021-05-22 02:01:13,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:13,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:13,252 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, 1, 1, 1, 1] [2021-05-22 02:01:13,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-05-22 02:01:13,252 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:13,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:13,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1951182949, now seen corresponding path program 100 times [2021-05-22 02:01:13,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:13,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006586725] [2021-05-22 02:01:13,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:13,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:13,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006586725] [2021-05-22 02:01:13,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006586725] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:13,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:13,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:13,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162510257] [2021-05-22 02:01:13,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:13,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:13,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:13,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:13,435 INFO L87 Difference]: Start difference. First operand 13515 states and 71832 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:13,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:13,657 INFO L93 Difference]: Finished difference Result 32224 states and 161671 transitions. [2021-05-22 02:01:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:13,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:13,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:14,020 INFO L225 Difference]: With dead ends: 32224 [2021-05-22 02:01:14,020 INFO L226 Difference]: Without dead ends: 31146 [2021-05-22 02:01:14,020 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 182.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:14,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31146 states. [2021-05-22 02:01:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31146 to 13331. [2021-05-22 02:01:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13331 states, 13330 states have (on average 5.3212303075768945) internal successors, (70932), 13330 states have internal predecessors, (70932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:15,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13331 states to 13331 states and 70932 transitions. [2021-05-22 02:01:15,100 INFO L78 Accepts]: Start accepts. Automaton has 13331 states and 70932 transitions. Word has length 33 [2021-05-22 02:01:15,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:15,100 INFO L482 AbstractCegarLoop]: Abstraction has 13331 states and 70932 transitions. [2021-05-22 02:01:15,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:15,100 INFO L276 IsEmpty]: Start isEmpty. Operand 13331 states and 70932 transitions. [2021-05-22 02:01:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:15,128 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:15,128 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:15,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-05-22 02:01:15,128 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:15,129 INFO L82 PathProgramCache]: Analyzing trace with hash -164666499, now seen corresponding path program 101 times [2021-05-22 02:01:15,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:15,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695205791] [2021-05-22 02:01:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:15,309 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 02:01:15,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:15,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695205791] [2021-05-22 02:01:15,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695205791] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:15,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:15,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:15,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533286909] [2021-05-22 02:01:15,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:15,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:15,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:15,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:15,310 INFO L87 Difference]: Start difference. First operand 13331 states and 70932 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:15,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:15,755 INFO L93 Difference]: Finished difference Result 32041 states and 160916 transitions. [2021-05-22 02:01:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:15,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:15,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:15,862 INFO L225 Difference]: With dead ends: 32041 [2021-05-22 02:01:15,863 INFO L226 Difference]: Without dead ends: 31306 [2021-05-22 02:01:15,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 202.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31306 states. [2021-05-22 02:01:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31306 to 13507. [2021-05-22 02:01:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13507 states, 13506 states have (on average 5.3099363245964755) internal successors, (71716), 13506 states have internal predecessors, (71716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 71716 transitions. [2021-05-22 02:01:17,216 INFO L78 Accepts]: Start accepts. Automaton has 13507 states and 71716 transitions. Word has length 33 [2021-05-22 02:01:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:17,216 INFO L482 AbstractCegarLoop]: Abstraction has 13507 states and 71716 transitions. [2021-05-22 02:01:17,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 13507 states and 71716 transitions. [2021-05-22 02:01:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:17,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:17,252 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, 1, 1, 1, 1] [2021-05-22 02:01:17,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-05-22 02:01:17,252 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:17,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:17,256 INFO L82 PathProgramCache]: Analyzing trace with hash -2118070309, now seen corresponding path program 102 times [2021-05-22 02:01:17,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:17,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162386083] [2021-05-22 02:01:17,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:17,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:17,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162386083] [2021-05-22 02:01:17,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162386083] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:17,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:17,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:17,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053471094] [2021-05-22 02:01:17,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:17,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:17,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:17,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:17,435 INFO L87 Difference]: Start difference. First operand 13507 states and 71716 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:17,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:17,645 INFO L93 Difference]: Finished difference Result 32200 states and 161491 transitions. [2021-05-22 02:01:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:17,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:17,747 INFO L225 Difference]: With dead ends: 32200 [2021-05-22 02:01:17,747 INFO L226 Difference]: Without dead ends: 31042 [2021-05-22 02:01:17,747 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 182.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31042 states. [2021-05-22 02:01:18,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31042 to 13243. [2021-05-22 02:01:19,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13243 states, 13242 states have (on average 5.326989880682676) internal successors, (70540), 13242 states have internal predecessors, (70540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70540 transitions. [2021-05-22 02:01:19,060 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70540 transitions. Word has length 33 [2021-05-22 02:01:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:19,060 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70540 transitions. [2021-05-22 02:01:19,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70540 transitions. [2021-05-22 02:01:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:19,089 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:19,089 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:19,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-05-22 02:01:19,089 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:19,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:19,089 INFO L82 PathProgramCache]: Analyzing trace with hash -994485349, now seen corresponding path program 103 times [2021-05-22 02:01:19,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:19,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476031147] [2021-05-22 02:01:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:19,248 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 02:01:19,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:19,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476031147] [2021-05-22 02:01:19,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476031147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:19,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:19,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:19,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239356062] [2021-05-22 02:01:19,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:19,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:19,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:19,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:19,249 INFO L87 Difference]: Start difference. First operand 13243 states and 70540 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:19,503 INFO L93 Difference]: Finished difference Result 31561 states and 158743 transitions. [2021-05-22 02:01:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:19,504 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:19,615 INFO L225 Difference]: With dead ends: 31561 [2021-05-22 02:01:19,615 INFO L226 Difference]: Without dead ends: 30810 [2021-05-22 02:01:19,615 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 184.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:20,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30810 states. [2021-05-22 02:01:20,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30810 to 13411. [2021-05-22 02:01:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13411 states, 13410 states have (on average 5.3184190902311705) internal successors, (71320), 13410 states have internal predecessors, (71320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13411 states to 13411 states and 71320 transitions. [2021-05-22 02:01:20,897 INFO L78 Accepts]: Start accepts. Automaton has 13411 states and 71320 transitions. Word has length 33 [2021-05-22 02:01:20,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:20,897 INFO L482 AbstractCegarLoop]: Abstraction has 13411 states and 71320 transitions. [2021-05-22 02:01:20,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 13411 states and 71320 transitions. [2021-05-22 02:01:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:20,925 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:20,925 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, 1, 1, 1, 1] [2021-05-22 02:01:20,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-05-22 02:01:20,925 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:20,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:20,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1475387395, now seen corresponding path program 104 times [2021-05-22 02:01:20,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:20,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957934338] [2021-05-22 02:01:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:21,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:21,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957934338] [2021-05-22 02:01:21,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957934338] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:21,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:21,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:21,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130563206] [2021-05-22 02:01:21,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:21,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:21,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:21,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:21,089 INFO L87 Difference]: Start difference. First operand 13411 states and 71320 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:21,322 INFO L93 Difference]: Finished difference Result 31545 states and 158567 transitions. [2021-05-22 02:01:21,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:21,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:21,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:21,425 INFO L225 Difference]: With dead ends: 31545 [2021-05-22 02:01:21,425 INFO L226 Difference]: Without dead ends: 30698 [2021-05-22 02:01:21,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 186.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:22,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30698 states. [2021-05-22 02:01:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30698 to 13299. [2021-05-22 02:01:22,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13299 states, 13298 states have (on average 5.32410888855467) internal successors, (70800), 13298 states have internal predecessors, (70800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13299 states to 13299 states and 70800 transitions. [2021-05-22 02:01:22,717 INFO L78 Accepts]: Start accepts. Automaton has 13299 states and 70800 transitions. Word has length 33 [2021-05-22 02:01:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:22,718 INFO L482 AbstractCegarLoop]: Abstraction has 13299 states and 70800 transitions. [2021-05-22 02:01:22,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 13299 states and 70800 transitions. [2021-05-22 02:01:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:22,745 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:22,745 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, 1, 1, 1, 1] [2021-05-22 02:01:22,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-05-22 02:01:22,745 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:22,746 INFO L82 PathProgramCache]: Analyzing trace with hash -757436645, now seen corresponding path program 105 times [2021-05-22 02:01:22,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:22,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889352545] [2021-05-22 02:01:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:22,918 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 02:01:22,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:22,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889352545] [2021-05-22 02:01:22,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889352545] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:22,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:22,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:22,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679706519] [2021-05-22 02:01:22,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:22,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:22,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:22,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:22,919 INFO L87 Difference]: Start difference. First operand 13299 states and 70800 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:23,144 INFO L93 Difference]: Finished difference Result 31599 states and 158832 transitions. [2021-05-22 02:01:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:23,250 INFO L225 Difference]: With dead ends: 31599 [2021-05-22 02:01:23,251 INFO L226 Difference]: Without dead ends: 30848 [2021-05-22 02:01:23,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 197.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30848 states. [2021-05-22 02:01:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30848 to 13419. [2021-05-22 02:01:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13419 states, 13418 states have (on average 5.3131614249515575) internal successors, (71292), 13418 states have internal predecessors, (71292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71292 transitions. [2021-05-22 02:01:24,545 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71292 transitions. Word has length 33 [2021-05-22 02:01:24,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:24,546 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71292 transitions. [2021-05-22 02:01:24,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:24,546 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71292 transitions. [2021-05-22 02:01:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:24,574 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:24,574 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, 1, 1, 1, 1] [2021-05-22 02:01:24,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-05-22 02:01:24,574 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:24,575 INFO L82 PathProgramCache]: Analyzing trace with hash 258619163, now seen corresponding path program 106 times [2021-05-22 02:01:24,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:24,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545439284] [2021-05-22 02:01:24,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:24,746 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 02:01:24,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:24,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545439284] [2021-05-22 02:01:24,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545439284] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:24,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:24,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:24,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694074176] [2021-05-22 02:01:24,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:24,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:24,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:24,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:24,747 INFO L87 Difference]: Start difference. First operand 13419 states and 71292 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:25,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:25,166 INFO L93 Difference]: Finished difference Result 31613 states and 158757 transitions. [2021-05-22 02:01:25,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:25,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:25,273 INFO L225 Difference]: With dead ends: 31613 [2021-05-22 02:01:25,273 INFO L226 Difference]: Without dead ends: 30728 [2021-05-22 02:01:25,274 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 198.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:25,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30728 states. [2021-05-22 02:01:26,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30728 to 13299. [2021-05-22 02:01:26,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13299 states, 13298 states have (on average 5.319897728981802) internal successors, (70744), 13298 states have internal predecessors, (70744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13299 states to 13299 states and 70744 transitions. [2021-05-22 02:01:26,342 INFO L78 Accepts]: Start accepts. Automaton has 13299 states and 70744 transitions. Word has length 33 [2021-05-22 02:01:26,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:26,342 INFO L482 AbstractCegarLoop]: Abstraction has 13299 states and 70744 transitions. [2021-05-22 02:01:26,342 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:26,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13299 states and 70744 transitions. [2021-05-22 02:01:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:26,371 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:26,371 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, 1, 1, 1, 1] [2021-05-22 02:01:26,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-05-22 02:01:26,371 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:26,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:26,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1546822915, now seen corresponding path program 107 times [2021-05-22 02:01:26,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:26,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674794611] [2021-05-22 02:01:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:26,625 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2021-05-22 02:01:26,679 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 02:01:26,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:26,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674794611] [2021-05-22 02:01:26,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674794611] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:26,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:26,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:26,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654831958] [2021-05-22 02:01:26,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:26,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:26,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:26,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:26,680 INFO L87 Difference]: Start difference. First operand 13299 states and 70744 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:26,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:26,911 INFO L93 Difference]: Finished difference Result 31559 states and 158612 transitions. [2021-05-22 02:01:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:26,911 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:26,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:27,025 INFO L225 Difference]: With dead ends: 31559 [2021-05-22 02:01:27,025 INFO L226 Difference]: Without dead ends: 30824 [2021-05-22 02:01:27,026 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 334.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30824 states. [2021-05-22 02:01:28,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30824 to 13411. [2021-05-22 02:01:28,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13411 states, 13410 states have (on average 5.31006711409396) internal successors, (71208), 13410 states have internal predecessors, (71208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:28,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13411 states to 13411 states and 71208 transitions. [2021-05-22 02:01:28,309 INFO L78 Accepts]: Start accepts. Automaton has 13411 states and 71208 transitions. Word has length 33 [2021-05-22 02:01:28,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:28,309 INFO L482 AbstractCegarLoop]: Abstraction has 13411 states and 71208 transitions. [2021-05-22 02:01:28,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 13411 states and 71208 transitions. [2021-05-22 02:01:28,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:28,337 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:28,338 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, 1, 1, 1, 1] [2021-05-22 02:01:28,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-05-22 02:01:28,338 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:28,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:28,338 INFO L82 PathProgramCache]: Analyzing trace with hash 784789467, now seen corresponding path program 108 times [2021-05-22 02:01:28,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:28,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986144661] [2021-05-22 02:01:28,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:28,529 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 02:01:28,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:28,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986144661] [2021-05-22 02:01:28,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986144661] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:28,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:28,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:28,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269816077] [2021-05-22 02:01:28,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:28,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:28,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:28,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:28,530 INFO L87 Difference]: Start difference. First operand 13411 states and 71208 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:28,784 INFO L93 Difference]: Finished difference Result 31589 states and 158609 transitions. [2021-05-22 02:01:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:28,785 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:28,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:28,890 INFO L225 Difference]: With dead ends: 31589 [2021-05-22 02:01:28,890 INFO L226 Difference]: Without dead ends: 30656 [2021-05-22 02:01:28,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 208.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:29,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30656 states. [2021-05-22 02:01:30,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30656 to 13243. [2021-05-22 02:01:30,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13243 states, 13242 states have (on average 5.3248753964657904) internal successors, (70512), 13242 states have internal predecessors, (70512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70512 transitions. [2021-05-22 02:01:30,147 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70512 transitions. Word has length 33 [2021-05-22 02:01:30,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:30,147 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70512 transitions. [2021-05-22 02:01:30,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:30,147 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70512 transitions. [2021-05-22 02:01:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:30,174 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:30,175 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, 1, 1, 1, 1] [2021-05-22 02:01:30,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-05-22 02:01:30,175 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:30,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:30,175 INFO L82 PathProgramCache]: Analyzing trace with hash -816886275, now seen corresponding path program 109 times [2021-05-22 02:01:30,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:30,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239200445] [2021-05-22 02:01:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:30,367 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 02:01:30,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:30,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239200445] [2021-05-22 02:01:30,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239200445] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:30,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:30,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:30,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653288601] [2021-05-22 02:01:30,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:30,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:30,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:30,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:30,368 INFO L87 Difference]: Start difference. First operand 13243 states and 70512 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:30,611 INFO L93 Difference]: Finished difference Result 32234 states and 161779 transitions. [2021-05-22 02:01:30,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:30,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:30,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:30,717 INFO L225 Difference]: With dead ends: 32234 [2021-05-22 02:01:30,717 INFO L226 Difference]: Without dead ends: 31483 [2021-05-22 02:01:30,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 216.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31483 states. [2021-05-22 02:01:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31483 to 13551. [2021-05-22 02:01:31,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13551 states, 13550 states have (on average 5.312177121771218) internal successors, (71980), 13550 states have internal predecessors, (71980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13551 states to 13551 states and 71980 transitions. [2021-05-22 02:01:32,022 INFO L78 Accepts]: Start accepts. Automaton has 13551 states and 71980 transitions. Word has length 33 [2021-05-22 02:01:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:32,022 INFO L482 AbstractCegarLoop]: Abstraction has 13551 states and 71980 transitions. [2021-05-22 02:01:32,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 13551 states and 71980 transitions. [2021-05-22 02:01:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:32,051 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:32,051 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:32,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-05-22 02:01:32,051 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:32,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:32,052 INFO L82 PathProgramCache]: Analyzing trace with hash 902178301, now seen corresponding path program 110 times [2021-05-22 02:01:32,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:32,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24169236] [2021-05-22 02:01:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:32,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:32,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24169236] [2021-05-22 02:01:32,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24169236] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:32,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:32,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:32,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400431993] [2021-05-22 02:01:32,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:32,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:32,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:32,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:32,231 INFO L87 Difference]: Start difference. First operand 13551 states and 71980 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:32,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:32,447 INFO L93 Difference]: Finished difference Result 32377 states and 162282 transitions. [2021-05-22 02:01:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:32,448 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:32,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:32,561 INFO L225 Difference]: With dead ends: 32377 [2021-05-22 02:01:32,562 INFO L226 Difference]: Without dead ends: 31299 [2021-05-22 02:01:32,562 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:33,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31299 states. [2021-05-22 02:01:33,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31299 to 13367. [2021-05-22 02:01:33,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13367 states, 13366 states have (on average 5.317671704324405) internal successors, (71076), 13366 states have internal predecessors, (71076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13367 states to 13367 states and 71076 transitions. [2021-05-22 02:01:33,887 INFO L78 Accepts]: Start accepts. Automaton has 13367 states and 71076 transitions. Word has length 33 [2021-05-22 02:01:33,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:33,887 INFO L482 AbstractCegarLoop]: Abstraction has 13367 states and 71076 transitions. [2021-05-22 02:01:33,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 13367 states and 71076 transitions. [2021-05-22 02:01:33,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:33,915 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:33,915 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:33,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-05-22 02:01:33,916 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:33,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:33,916 INFO L82 PathProgramCache]: Analyzing trace with hash 641160795, now seen corresponding path program 111 times [2021-05-22 02:01:33,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:33,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450378639] [2021-05-22 02:01:33,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:34,091 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 02:01:34,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:34,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450378639] [2021-05-22 02:01:34,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450378639] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:34,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:34,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:34,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222616724] [2021-05-22 02:01:34,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:34,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:34,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:34,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:34,092 INFO L87 Difference]: Start difference. First operand 13367 states and 71076 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:34,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:34,317 INFO L93 Difference]: Finished difference Result 32041 states and 160789 transitions. [2021-05-22 02:01:34,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:34,317 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:34,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:34,682 INFO L225 Difference]: With dead ends: 32041 [2021-05-22 02:01:34,682 INFO L226 Difference]: Without dead ends: 31290 [2021-05-22 02:01:34,682 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 199.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31290 states. [2021-05-22 02:01:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31290 to 13487. [2021-05-22 02:01:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13487 states, 13486 states have (on average 5.306836719561026) internal successors, (71568), 13486 states have internal predecessors, (71568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:35,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13487 states to 13487 states and 71568 transitions. [2021-05-22 02:01:35,763 INFO L78 Accepts]: Start accepts. Automaton has 13487 states and 71568 transitions. Word has length 33 [2021-05-22 02:01:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:35,763 INFO L482 AbstractCegarLoop]: Abstraction has 13487 states and 71568 transitions. [2021-05-22 02:01:35,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 13487 states and 71568 transitions. [2021-05-22 02:01:35,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:35,791 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:35,791 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, 1, 1, 1, 1] [2021-05-22 02:01:35,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-05-22 02:01:35,791 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:35,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:35,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1082391043, now seen corresponding path program 112 times [2021-05-22 02:01:35,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:35,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386364280] [2021-05-22 02:01:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:35,967 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 02:01:35,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:35,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386364280] [2021-05-22 02:01:35,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386364280] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:35,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:35,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:35,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822136837] [2021-05-22 02:01:35,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:35,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:35,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:35,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:35,968 INFO L87 Difference]: Start difference. First operand 13487 states and 71568 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (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 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2021-05-22 02:01:36,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:36,389 INFO L93 Difference]: Finished difference Result 32055 states and 160714 transitions. [2021-05-22 02:01:36,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:36,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:36,496 INFO L225 Difference]: With dead ends: 32055 [2021-05-22 02:01:36,496 INFO L226 Difference]: Without dead ends: 31170 [2021-05-22 02:01:36,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 394.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:37,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31170 states. [2021-05-22 02:01:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31170 to 13367. [2021-05-22 02:01:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13367 states, 13366 states have (on average 5.313182702379171) internal successors, (71016), 13366 states have internal predecessors, (71016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:37,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13367 states to 13367 states and 71016 transitions. [2021-05-22 02:01:37,805 INFO L78 Accepts]: Start accepts. Automaton has 13367 states and 71016 transitions. Word has length 33 [2021-05-22 02:01:37,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:37,805 INFO L482 AbstractCegarLoop]: Abstraction has 13367 states and 71016 transitions. [2021-05-22 02:01:37,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:37,805 INFO L276 IsEmpty]: Start isEmpty. Operand 13367 states and 71016 transitions. [2021-05-22 02:01:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:37,840 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:37,840 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:37,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-05-22 02:01:37,841 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:37,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:37,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1920733699, now seen corresponding path program 113 times [2021-05-22 02:01:37,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:37,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625387142] [2021-05-22 02:01:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:38,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:38,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625387142] [2021-05-22 02:01:38,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625387142] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:38,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:38,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:38,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089431329] [2021-05-22 02:01:38,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:38,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:38,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:38,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:38,001 INFO L87 Difference]: Start difference. First operand 13367 states and 71016 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:38,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:38,215 INFO L93 Difference]: Finished difference Result 32462 states and 162577 transitions. [2021-05-22 02:01:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:38,215 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:38,321 INFO L225 Difference]: With dead ends: 32462 [2021-05-22 02:01:38,321 INFO L226 Difference]: Without dead ends: 31568 [2021-05-22 02:01:38,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:39,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31568 states. [2021-05-22 02:01:39,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31568 to 13622. [2021-05-22 02:01:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13622 states, 13621 states have (on average 5.28881873577564) internal successors, (72039), 13621 states have internal predecessors, (72039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:39,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13622 states to 13622 states and 72039 transitions. [2021-05-22 02:01:39,608 INFO L78 Accepts]: Start accepts. Automaton has 13622 states and 72039 transitions. Word has length 33 [2021-05-22 02:01:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:39,608 INFO L482 AbstractCegarLoop]: Abstraction has 13622 states and 72039 transitions. [2021-05-22 02:01:39,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:39,608 INFO L276 IsEmpty]: Start isEmpty. Operand 13622 states and 72039 transitions. [2021-05-22 02:01:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:39,636 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:39,636 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:39,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-05-22 02:01:39,636 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash 351172059, now seen corresponding path program 114 times [2021-05-22 02:01:39,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:39,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79184020] [2021-05-22 02:01:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:39,804 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 02:01:39,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:39,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79184020] [2021-05-22 02:01:39,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79184020] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:39,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:39,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:39,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81171392] [2021-05-22 02:01:39,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:39,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:39,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:39,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:39,805 INFO L87 Difference]: Start difference. First operand 13622 states and 72039 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:40,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:40,051 INFO L93 Difference]: Finished difference Result 32333 states and 161808 transitions. [2021-05-22 02:01:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:40,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:40,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:40,168 INFO L225 Difference]: With dead ends: 32333 [2021-05-22 02:01:40,168 INFO L226 Difference]: Without dead ends: 31189 [2021-05-22 02:01:40,168 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 190.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:41,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31189 states. [2021-05-22 02:01:41,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31189 to 13243. [2021-05-22 02:01:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13243 states, 13242 states have (on average 5.320344358858178) internal successors, (70452), 13242 states have internal predecessors, (70452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:41,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70452 transitions. [2021-05-22 02:01:41,435 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70452 transitions. Word has length 33 [2021-05-22 02:01:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:41,435 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70452 transitions. [2021-05-22 02:01:41,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70452 transitions. [2021-05-22 02:01:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:41,462 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:41,462 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, 1, 1, 1, 1] [2021-05-22 02:01:41,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-05-22 02:01:41,462 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:41,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:41,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1706868385, now seen corresponding path program 115 times [2021-05-22 02:01:41,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:41,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621276715] [2021-05-22 02:01:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:41,634 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 02:01:41,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:41,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621276715] [2021-05-22 02:01:41,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621276715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:41,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:41,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:41,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577076459] [2021-05-22 02:01:41,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:41,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:41,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:41,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:41,635 INFO L87 Difference]: Start difference. First operand 13243 states and 70452 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:41,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:41,876 INFO L93 Difference]: Finished difference Result 32158 states and 161399 transitions. [2021-05-22 02:01:41,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:41,877 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:41,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:41,977 INFO L225 Difference]: With dead ends: 32158 [2021-05-22 02:01:41,977 INFO L226 Difference]: Without dead ends: 31423 [2021-05-22 02:01:41,977 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 196.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31423 states. [2021-05-22 02:01:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31423 to 13539. [2021-05-22 02:01:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13539 states, 13538 states have (on average 5.308908258236076) internal successors, (71872), 13538 states have internal predecessors, (71872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 71872 transitions. [2021-05-22 02:01:43,240 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 71872 transitions. Word has length 33 [2021-05-22 02:01:43,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:43,240 INFO L482 AbstractCegarLoop]: Abstraction has 13539 states and 71872 transitions. [2021-05-22 02:01:43,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:43,240 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 71872 transitions. [2021-05-22 02:01:43,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:43,267 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:43,267 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, 1, 1, 1, 1] [2021-05-22 02:01:43,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-05-22 02:01:43,268 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:43,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:43,268 INFO L82 PathProgramCache]: Analyzing trace with hash 634695101, now seen corresponding path program 116 times [2021-05-22 02:01:43,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:43,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447037704] [2021-05-22 02:01:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:43,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:43,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447037704] [2021-05-22 02:01:43,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447037704] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:43,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:43,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:43,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209821624] [2021-05-22 02:01:43,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:43,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:43,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:43,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:43,442 INFO L87 Difference]: Start difference. First operand 13539 states and 71872 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:43,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:43,663 INFO L93 Difference]: Finished difference Result 32317 states and 161974 transitions. [2021-05-22 02:01:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:43,663 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:43,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:43,768 INFO L225 Difference]: With dead ends: 32317 [2021-05-22 02:01:43,768 INFO L226 Difference]: Without dead ends: 31247 [2021-05-22 02:01:43,769 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31247 states. [2021-05-22 02:01:45,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31247 to 13363. [2021-05-22 02:01:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.313575812004191) internal successors, (71000), 13362 states have internal predecessors, (71000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71000 transitions. [2021-05-22 02:01:45,075 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71000 transitions. Word has length 33 [2021-05-22 02:01:45,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:45,076 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71000 transitions. [2021-05-22 02:01:45,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71000 transitions. [2021-05-22 02:01:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:45,104 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:45,104 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, 1, 1, 1, 1] [2021-05-22 02:01:45,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-05-22 02:01:45,105 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:45,105 INFO L82 PathProgramCache]: Analyzing trace with hash -248821315, now seen corresponding path program 117 times [2021-05-22 02:01:45,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:45,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617304620] [2021-05-22 02:01:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:45,276 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 02:01:45,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:45,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617304620] [2021-05-22 02:01:45,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617304620] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:45,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:45,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:45,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252285285] [2021-05-22 02:01:45,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:45,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:45,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:45,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:45,277 INFO L87 Difference]: Start difference. First operand 13363 states and 71000 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:45,691 INFO L93 Difference]: Finished difference Result 31965 states and 160413 transitions. [2021-05-22 02:01:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:45,691 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:45,804 INFO L225 Difference]: With dead ends: 31965 [2021-05-22 02:01:45,804 INFO L226 Difference]: Without dead ends: 31230 [2021-05-22 02:01:45,804 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 197.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31230 states. [2021-05-22 02:01:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31230 to 13475. [2021-05-22 02:01:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13475 states, 13474 states have (on average 5.303844441145911) internal successors, (71464), 13474 states have internal predecessors, (71464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13475 states to 13475 states and 71464 transitions. [2021-05-22 02:01:46,902 INFO L78 Accepts]: Start accepts. Automaton has 13475 states and 71464 transitions. Word has length 33 [2021-05-22 02:01:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:46,902 INFO L482 AbstractCegarLoop]: Abstraction has 13475 states and 71464 transitions. [2021-05-22 02:01:46,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 13475 states and 71464 transitions. [2021-05-22 02:01:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:46,931 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:46,931 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:46,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-05-22 02:01:46,931 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:46,932 INFO L82 PathProgramCache]: Analyzing trace with hash -656816579, now seen corresponding path program 118 times [2021-05-22 02:01:46,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:46,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483279529] [2021-05-22 02:01:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:47,252 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 02:01:47,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:47,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483279529] [2021-05-22 02:01:47,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483279529] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:47,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:47,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:47,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469663146] [2021-05-22 02:01:47,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:47,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:47,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:47,254 INFO L87 Difference]: Start difference. First operand 13475 states and 71464 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:47,518 INFO L93 Difference]: Finished difference Result 31995 states and 160410 transitions. [2021-05-22 02:01:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:47,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:47,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:47,623 INFO L225 Difference]: With dead ends: 31995 [2021-05-22 02:01:47,624 INFO L226 Difference]: Without dead ends: 31118 [2021-05-22 02:01:47,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 211.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31118 states. [2021-05-22 02:01:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31118 to 13363. [2021-05-22 02:01:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.309384822631342) internal successors, (70944), 13362 states have internal predecessors, (70944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 70944 transitions. [2021-05-22 02:01:48,909 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 70944 transitions. Word has length 33 [2021-05-22 02:01:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:48,909 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 70944 transitions. [2021-05-22 02:01:48,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:48,909 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 70944 transitions. [2021-05-22 02:01:48,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:48,938 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:48,938 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:48,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-05-22 02:01:48,938 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:48,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:48,939 INFO L82 PathProgramCache]: Analyzing trace with hash -658734309, now seen corresponding path program 119 times [2021-05-22 02:01:48,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:48,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986983773] [2021-05-22 02:01:48,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:49,103 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 02:01:49,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:49,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986983773] [2021-05-22 02:01:49,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986983773] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:49,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:49,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:49,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898424643] [2021-05-22 02:01:49,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:49,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:49,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:49,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:49,104 INFO L87 Difference]: Start difference. First operand 13363 states and 70944 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:49,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:49,327 INFO L93 Difference]: Finished difference Result 32426 states and 162369 transitions. [2021-05-22 02:01:49,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:49,327 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:49,434 INFO L225 Difference]: With dead ends: 32426 [2021-05-22 02:01:49,435 INFO L226 Difference]: Without dead ends: 31532 [2021-05-22 02:01:49,435 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31532 states. [2021-05-22 02:01:50,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31532 to 13618. [2021-05-22 02:01:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13618 states, 13617 states have (on average 5.285084820445032) internal successors, (71967), 13617 states have internal predecessors, (71967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13618 states to 13618 states and 71967 transitions. [2021-05-22 02:01:50,724 INFO L78 Accepts]: Start accepts. Automaton has 13618 states and 71967 transitions. Word has length 33 [2021-05-22 02:01:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:50,724 INFO L482 AbstractCegarLoop]: Abstraction has 13618 states and 71967 transitions. [2021-05-22 02:01:50,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:50,724 INFO L276 IsEmpty]: Start isEmpty. Operand 13618 states and 71967 transitions. [2021-05-22 02:01:50,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:50,755 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:50,755 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, 1, 1, 1, 1] [2021-05-22 02:01:50,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-05-22 02:01:50,755 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:50,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:50,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1050867453, now seen corresponding path program 120 times [2021-05-22 02:01:50,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:50,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207221235] [2021-05-22 02:01:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:50,921 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 02:01:50,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:50,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207221235] [2021-05-22 02:01:50,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207221235] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:50,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:50,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:50,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163360759] [2021-05-22 02:01:50,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:50,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:50,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:50,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:50,922 INFO L87 Difference]: Start difference. First operand 13618 states and 71967 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:51,156 INFO L93 Difference]: Finished difference Result 32297 states and 161600 transitions. [2021-05-22 02:01:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:51,156 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:51,261 INFO L225 Difference]: With dead ends: 32297 [2021-05-22 02:01:51,261 INFO L226 Difference]: Without dead ends: 31067 [2021-05-22 02:01:51,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 186.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:52,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31067 states. [2021-05-22 02:01:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31067 to 13153. [2021-05-22 02:01:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13153 states, 13152 states have (on average 5.3321167883211675) internal successors, (70128), 13152 states have internal predecessors, (70128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13153 states to 13153 states and 70128 transitions. [2021-05-22 02:01:52,557 INFO L78 Accepts]: Start accepts. Automaton has 13153 states and 70128 transitions. Word has length 33 [2021-05-22 02:01:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:52,557 INFO L482 AbstractCegarLoop]: Abstraction has 13153 states and 70128 transitions. [2021-05-22 02:01:52,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 13153 states and 70128 transitions. [2021-05-22 02:01:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:52,585 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:52,585 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, 1, 1, 1, 1] [2021-05-22 02:01:52,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-05-22 02:01:52,585 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:52,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:52,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1955285691, now seen corresponding path program 121 times [2021-05-22 02:01:52,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:52,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823871213] [2021-05-22 02:01:52,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:52,750 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 02:01:52,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:52,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823871213] [2021-05-22 02:01:52,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823871213] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:52,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:52,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:52,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485147505] [2021-05-22 02:01:52,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:52,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:52,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:52,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:52,752 INFO L87 Difference]: Start difference. First operand 13153 states and 70128 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:52,991 INFO L93 Difference]: Finished difference Result 31566 states and 158987 transitions. [2021-05-22 02:01:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:52,991 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:52,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:53,096 INFO L225 Difference]: With dead ends: 31566 [2021-05-22 02:01:53,096 INFO L226 Difference]: Without dead ends: 30807 [2021-05-22 02:01:53,096 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 184.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:54,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30807 states. [2021-05-22 02:01:54,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30807 to 13431. [2021-05-22 02:01:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13431 states, 13430 states have (on average 5.3272524199553235) internal successors, (71545), 13430 states have internal predecessors, (71545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13431 states to 13431 states and 71545 transitions. [2021-05-22 02:01:54,429 INFO L78 Accepts]: Start accepts. Automaton has 13431 states and 71545 transitions. Word has length 33 [2021-05-22 02:01:54,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:54,429 INFO L482 AbstractCegarLoop]: Abstraction has 13431 states and 71545 transitions. [2021-05-22 02:01:54,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:54,429 INFO L276 IsEmpty]: Start isEmpty. Operand 13431 states and 71545 transitions. [2021-05-22 02:01:54,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:54,458 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:54,458 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, 1, 1, 1, 1] [2021-05-22 02:01:54,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-05-22 02:01:54,458 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:54,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:54,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1108488729, now seen corresponding path program 122 times [2021-05-22 02:01:54,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:54,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446015923] [2021-05-22 02:01:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:54,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:54,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446015923] [2021-05-22 02:01:54,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446015923] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:54,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:54,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:54,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410678211] [2021-05-22 02:01:54,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:54,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:54,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:54,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:54,620 INFO L87 Difference]: Start difference. First operand 13431 states and 71545 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:54,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:54,852 INFO L93 Difference]: Finished difference Result 31558 states and 158839 transitions. [2021-05-22 02:01:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:54,852 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:55,200 INFO L225 Difference]: With dead ends: 31558 [2021-05-22 02:01:55,200 INFO L226 Difference]: Without dead ends: 30687 [2021-05-22 02:01:55,200 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 185.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:55,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30687 states. [2021-05-22 02:01:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30687 to 13311. [2021-05-22 02:01:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13311 states, 13310 states have (on average 5.333809166040571) internal successors, (70993), 13310 states have internal predecessors, (70993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:56,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13311 states to 13311 states and 70993 transitions. [2021-05-22 02:01:56,268 INFO L78 Accepts]: Start accepts. Automaton has 13311 states and 70993 transitions. Word has length 33 [2021-05-22 02:01:56,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:56,268 INFO L482 AbstractCegarLoop]: Abstraction has 13311 states and 70993 transitions. [2021-05-22 02:01:56,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:56,268 INFO L276 IsEmpty]: Start isEmpty. Operand 13311 states and 70993 transitions. [2021-05-22 02:01:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:56,298 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:56,298 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, 1, 1, 1, 1] [2021-05-22 02:01:56,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-05-22 02:01:56,298 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:56,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:56,298 INFO L82 PathProgramCache]: Analyzing trace with hash -588287301, now seen corresponding path program 123 times [2021-05-22 02:01:56,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:56,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803522575] [2021-05-22 02:01:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:56,476 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 02:01:56,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:56,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803522575] [2021-05-22 02:01:56,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803522575] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:56,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:56,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:56,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418504110] [2021-05-22 02:01:56,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:56,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:56,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:56,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:56,477 INFO L87 Difference]: Start difference. First operand 13311 states and 70993 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:56,896 INFO L93 Difference]: Finished difference Result 31777 states and 159886 transitions. [2021-05-22 02:01:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:56,896 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:57,015 INFO L225 Difference]: With dead ends: 31777 [2021-05-22 02:01:57,015 INFO L226 Difference]: Without dead ends: 31018 [2021-05-22 02:01:57,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 201.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31018 states. [2021-05-22 02:01:58,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31018 to 13499. [2021-05-22 02:01:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13499 states, 13498 states have (on average 5.320566009779227) internal successors, (71817), 13498 states have internal predecessors, (71817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13499 states to 13499 states and 71817 transitions. [2021-05-22 02:01:58,383 INFO L78 Accepts]: Start accepts. Automaton has 13499 states and 71817 transitions. Word has length 33 [2021-05-22 02:01:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:58,383 INFO L482 AbstractCegarLoop]: Abstraction has 13499 states and 71817 transitions. [2021-05-22 02:01:58,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:58,383 INFO L276 IsEmpty]: Start isEmpty. Operand 13499 states and 71817 transitions. [2021-05-22 02:01:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:01:58,421 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:58,421 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:58,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-05-22 02:01:58,421 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:58,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:58,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1799793339, now seen corresponding path program 124 times [2021-05-22 02:01:58,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:58,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026358372] [2021-05-22 02:01:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:58,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:58,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026358372] [2021-05-22 02:01:58,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026358372] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:58,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:58,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:01:58,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958079327] [2021-05-22 02:01:58,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:01:58,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:58,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:01:58,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:58,619 INFO L87 Difference]: Start difference. First operand 13499 states and 71817 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:58,855 INFO L93 Difference]: Finished difference Result 31912 states and 160357 transitions. [2021-05-22 02:01:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:01:58,856 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:01:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:58,965 INFO L225 Difference]: With dead ends: 31912 [2021-05-22 02:01:58,965 INFO L226 Difference]: Without dead ends: 30830 [2021-05-22 02:01:58,965 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 196.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:01:59,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30830 states. [2021-05-22 02:02:00,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30830 to 13311. [2021-05-22 02:02:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13311 states, 13310 states have (on average 5.326897069872277) internal successors, (70901), 13310 states have internal predecessors, (70901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:00,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13311 states to 13311 states and 70901 transitions. [2021-05-22 02:02:00,259 INFO L78 Accepts]: Start accepts. Automaton has 13311 states and 70901 transitions. Word has length 33 [2021-05-22 02:02:00,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:00,259 INFO L482 AbstractCegarLoop]: Abstraction has 13311 states and 70901 transitions. [2021-05-22 02:02:00,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:00,259 INFO L276 IsEmpty]: Start isEmpty. Operand 13311 states and 70901 transitions. [2021-05-22 02:02:00,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:00,289 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:00,289 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, 1, 1, 1, 1] [2021-05-22 02:02:00,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-05-22 02:02:00,290 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:00,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:00,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1445035367, now seen corresponding path program 125 times [2021-05-22 02:02:00,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:00,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033572113] [2021-05-22 02:02:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:00,495 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 02:02:00,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:00,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033572113] [2021-05-22 02:02:00,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033572113] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:00,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:00,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:00,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643131168] [2021-05-22 02:02:00,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:00,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:00,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:00,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:00,496 INFO L87 Difference]: Start difference. First operand 13311 states and 70901 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:00,741 INFO L93 Difference]: Finished difference Result 31757 states and 159722 transitions. [2021-05-22 02:02:00,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:00,741 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:00,848 INFO L225 Difference]: With dead ends: 31757 [2021-05-22 02:02:00,848 INFO L226 Difference]: Without dead ends: 31006 [2021-05-22 02:02:00,849 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 229.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31006 states. [2021-05-22 02:02:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31006 to 13495. [2021-05-22 02:02:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13495 states, 13494 states have (on average 5.314436045649918) internal successors, (71713), 13494 states have internal predecessors, (71713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:02,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 71713 transitions. [2021-05-22 02:02:02,136 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 71713 transitions. Word has length 33 [2021-05-22 02:02:02,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:02,136 INFO L482 AbstractCegarLoop]: Abstraction has 13495 states and 71713 transitions. [2021-05-22 02:02:02,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:02,136 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 71713 transitions. [2021-05-22 02:02:02,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:02,165 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:02,165 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, 1, 1, 1, 1] [2021-05-22 02:02:02,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-05-22 02:02:02,166 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:02,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:02,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2062558725, now seen corresponding path program 126 times [2021-05-22 02:02:02,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:02,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884713882] [2021-05-22 02:02:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:02,345 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 02:02:02,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:02,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884713882] [2021-05-22 02:02:02,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884713882] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:02,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:02,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:02,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759791940] [2021-05-22 02:02:02,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:02,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:02,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:02,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:02,346 INFO L87 Difference]: Start difference. First operand 13495 states and 71713 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:02,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:02,562 INFO L93 Difference]: Finished difference Result 31900 states and 160225 transitions. [2021-05-22 02:02:02,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:02,563 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:02,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:02,677 INFO L225 Difference]: With dead ends: 31900 [2021-05-22 02:02:02,677 INFO L226 Difference]: Without dead ends: 30730 [2021-05-22 02:02:02,677 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 184.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:03,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30730 states. [2021-05-22 02:02:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30730 to 13219. [2021-05-22 02:02:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 13218 states have (on average 5.333408987743986) internal successors, (70497), 13218 states have internal predecessors, (70497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70497 transitions. [2021-05-22 02:02:04,035 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70497 transitions. Word has length 33 [2021-05-22 02:02:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:04,035 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70497 transitions. [2021-05-22 02:02:04,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70497 transitions. [2021-05-22 02:02:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:04,064 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:04,064 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:04,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-05-22 02:02:04,064 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:04,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:04,065 INFO L82 PathProgramCache]: Analyzing trace with hash 574879647, now seen corresponding path program 127 times [2021-05-22 02:02:04,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:04,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48044020] [2021-05-22 02:02:04,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:04,236 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 02:02:04,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:04,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48044020] [2021-05-22 02:02:04,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48044020] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:04,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:04,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:04,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431315716] [2021-05-22 02:02:04,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:04,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:04,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:04,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:04,237 INFO L87 Difference]: Start difference. First operand 13219 states and 70497 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:04,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:04,535 INFO L93 Difference]: Finished difference Result 31223 states and 157332 transitions. [2021-05-22 02:02:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:04,535 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:04,641 INFO L225 Difference]: With dead ends: 31223 [2021-05-22 02:02:04,641 INFO L226 Difference]: Without dead ends: 30464 [2021-05-22 02:02:04,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 186.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30464 states. [2021-05-22 02:02:05,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30464 to 13395. [2021-05-22 02:02:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13395 states, 13394 states have (on average 5.323652381663432) internal successors, (71305), 13394 states have internal predecessors, (71305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71305 transitions. [2021-05-22 02:02:05,968 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71305 transitions. Word has length 33 [2021-05-22 02:02:05,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:05,968 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71305 transitions. [2021-05-22 02:02:05,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71305 transitions. [2021-05-22 02:02:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:05,997 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:05,997 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, 1, 1, 1, 1] [2021-05-22 02:02:05,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-05-22 02:02:05,997 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:05,997 INFO L82 PathProgramCache]: Analyzing trace with hash -271917315, now seen corresponding path program 128 times [2021-05-22 02:02:05,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:05,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033630876] [2021-05-22 02:02:05,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:06,173 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 02:02:06,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:06,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033630876] [2021-05-22 02:02:06,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033630876] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:06,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:06,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:06,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647024698] [2021-05-22 02:02:06,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:06,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:06,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:06,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:06,174 INFO L87 Difference]: Start difference. First operand 13395 states and 71305 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:06,703 INFO L93 Difference]: Finished difference Result 31215 states and 157184 transitions. [2021-05-22 02:02:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:06,703 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:06,815 INFO L225 Difference]: With dead ends: 31215 [2021-05-22 02:02:06,815 INFO L226 Difference]: Without dead ends: 30344 [2021-05-22 02:02:06,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 203.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30344 states. [2021-05-22 02:02:07,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30344 to 13275. [2021-05-22 02:02:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13275 states, 13274 states have (on average 5.330495705891216) internal successors, (70757), 13274 states have internal predecessors, (70757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70757 transitions. [2021-05-22 02:02:07,938 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70757 transitions. Word has length 33 [2021-05-22 02:02:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:07,938 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70757 transitions. [2021-05-22 02:02:07,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70757 transitions. [2021-05-22 02:02:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:07,966 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:07,966 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, 1, 1, 1, 1] [2021-05-22 02:02:07,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-05-22 02:02:07,966 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:07,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:07,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1448181891, now seen corresponding path program 129 times [2021-05-22 02:02:07,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:07,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768542062] [2021-05-22 02:02:07,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:08,219 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-22 02:02:08,246 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 02:02:08,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:08,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768542062] [2021-05-22 02:02:08,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768542062] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:08,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:08,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:08,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630929658] [2021-05-22 02:02:08,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:08,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:08,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:08,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:08,247 INFO L87 Difference]: Start difference. First operand 13275 states and 70757 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:08,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:08,477 INFO L93 Difference]: Finished difference Result 31199 states and 157176 transitions. [2021-05-22 02:02:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:08,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:08,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:08,579 INFO L225 Difference]: With dead ends: 31199 [2021-05-22 02:02:08,579 INFO L226 Difference]: Without dead ends: 30440 [2021-05-22 02:02:08,579 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 306.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:09,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30440 states. [2021-05-22 02:02:09,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30440 to 13387. [2021-05-22 02:02:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13387 states, 13386 states have (on average 5.320558792768564) internal successors, (71221), 13386 states have internal predecessors, (71221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71221 transitions. [2021-05-22 02:02:09,876 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71221 transitions. Word has length 33 [2021-05-22 02:02:09,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:09,877 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71221 transitions. [2021-05-22 02:02:09,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71221 transitions. [2021-05-22 02:02:09,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:09,906 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:09,906 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, 1, 1, 1, 1] [2021-05-22 02:02:09,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-05-22 02:02:09,906 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:09,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2050758525, now seen corresponding path program 130 times [2021-05-22 02:02:09,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:09,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500747142] [2021-05-22 02:02:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:10,054 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 02:02:10,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:10,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500747142] [2021-05-22 02:02:10,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500747142] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:10,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:10,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:10,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16702359] [2021-05-22 02:02:10,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:10,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:10,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:10,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:10,055 INFO L87 Difference]: Start difference. First operand 13387 states and 71221 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:10,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:10,291 INFO L93 Difference]: Finished difference Result 31175 states and 156972 transitions. [2021-05-22 02:02:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:10,292 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:10,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:10,411 INFO L225 Difference]: With dead ends: 31175 [2021-05-22 02:02:10,411 INFO L226 Difference]: Without dead ends: 30328 [2021-05-22 02:02:10,411 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 171.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30328 states. [2021-05-22 02:02:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30328 to 13275. [2021-05-22 02:02:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13275 states, 13274 states have (on average 5.326276932348953) internal successors, (70701), 13274 states have internal predecessors, (70701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:11,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70701 transitions. [2021-05-22 02:02:11,679 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70701 transitions. Word has length 33 [2021-05-22 02:02:11,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:11,679 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70701 transitions. [2021-05-22 02:02:11,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:11,679 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70701 transitions. [2021-05-22 02:02:11,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:11,709 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:11,709 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, 1, 1, 1, 1] [2021-05-22 02:02:11,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-05-22 02:02:11,709 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:11,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:11,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1990037339, now seen corresponding path program 131 times [2021-05-22 02:02:11,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:11,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351246368] [2021-05-22 02:02:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:11,877 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 02:02:11,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:11,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351246368] [2021-05-22 02:02:11,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351246368] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:11,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:11,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:11,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790307499] [2021-05-22 02:02:11,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:11,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:11,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:11,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:11,878 INFO L87 Difference]: Start difference. First operand 13275 states and 70701 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:12,126 INFO L93 Difference]: Finished difference Result 31183 states and 157064 transitions. [2021-05-22 02:02:12,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:12,126 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:12,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:12,234 INFO L225 Difference]: With dead ends: 31183 [2021-05-22 02:02:12,234 INFO L226 Difference]: Without dead ends: 30432 [2021-05-22 02:02:12,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 186.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:13,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30432 states. [2021-05-22 02:02:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30432 to 13387. [2021-05-22 02:02:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13387 states, 13386 states have (on average 5.316375317495892) internal successors, (71165), 13386 states have internal predecessors, (71165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:13,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71165 transitions. [2021-05-22 02:02:13,541 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71165 transitions. Word has length 33 [2021-05-22 02:02:13,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:13,541 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71165 transitions. [2021-05-22 02:02:13,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71165 transitions. [2021-05-22 02:02:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:13,572 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:13,572 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, 1, 1, 1, 1] [2021-05-22 02:02:13,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-05-22 02:02:13,572 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:13,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:13,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1509135293, now seen corresponding path program 132 times [2021-05-22 02:02:13,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:13,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248284031] [2021-05-22 02:02:13,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:13,731 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 02:02:13,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:13,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248284031] [2021-05-22 02:02:13,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248284031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:13,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:13,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:13,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746827986] [2021-05-22 02:02:13,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:13,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:13,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:13,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:13,732 INFO L87 Difference]: Start difference. First operand 13387 states and 71165 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:13,995 INFO L93 Difference]: Finished difference Result 31167 states and 156888 transitions. [2021-05-22 02:02:13,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:13,995 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:14,099 INFO L225 Difference]: With dead ends: 31167 [2021-05-22 02:02:14,099 INFO L226 Difference]: Without dead ends: 30264 [2021-05-22 02:02:14,099 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 181.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30264 states. [2021-05-22 02:02:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30264 to 13219. [2021-05-22 02:02:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 13218 states have (on average 5.331290664245725) internal successors, (70469), 13218 states have internal predecessors, (70469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70469 transitions. [2021-05-22 02:02:15,404 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70469 transitions. Word has length 33 [2021-05-22 02:02:15,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:15,404 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70469 transitions. [2021-05-22 02:02:15,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70469 transitions. [2021-05-22 02:02:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:15,433 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:15,433 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, 1, 1, 1, 1] [2021-05-22 02:02:15,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-05-22 02:02:15,433 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:15,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:15,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1553355995, now seen corresponding path program 133 times [2021-05-22 02:02:15,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:15,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107358882] [2021-05-22 02:02:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:15,589 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 02:02:15,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:15,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107358882] [2021-05-22 02:02:15,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107358882] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:15,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:15,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:15,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123138133] [2021-05-22 02:02:15,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:15,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:15,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:15,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:15,590 INFO L87 Difference]: Start difference. First operand 13219 states and 70469 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:15,833 INFO L93 Difference]: Finished difference Result 31506 states and 158659 transitions. [2021-05-22 02:02:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:15,834 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:15,934 INFO L225 Difference]: With dead ends: 31506 [2021-05-22 02:02:15,935 INFO L226 Difference]: Without dead ends: 30747 [2021-05-22 02:02:15,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 181.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:16,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30747 states. [2021-05-22 02:02:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30747 to 13419. [2021-05-22 02:02:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13419 states, 13418 states have (on average 5.323073483380534) internal successors, (71425), 13418 states have internal predecessors, (71425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:17,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71425 transitions. [2021-05-22 02:02:17,251 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71425 transitions. Word has length 33 [2021-05-22 02:02:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:17,251 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71425 transitions. [2021-05-22 02:02:17,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:17,251 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71425 transitions. [2021-05-22 02:02:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:17,281 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:17,281 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, 1, 1, 1, 1] [2021-05-22 02:02:17,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-05-22 02:02:17,281 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:17,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:17,281 INFO L82 PathProgramCache]: Analyzing trace with hash 757329115, now seen corresponding path program 134 times [2021-05-22 02:02:17,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:17,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543028140] [2021-05-22 02:02:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:17,439 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 02:02:17,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:17,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543028140] [2021-05-22 02:02:17,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543028140] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:17,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:17,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:17,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454560055] [2021-05-22 02:02:17,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:17,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:17,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:17,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:17,440 INFO L87 Difference]: Start difference. First operand 13419 states and 71425 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:17,865 INFO L93 Difference]: Finished difference Result 31482 states and 158455 transitions. [2021-05-22 02:02:17,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:17,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:17,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:17,975 INFO L225 Difference]: With dead ends: 31482 [2021-05-22 02:02:17,975 INFO L226 Difference]: Without dead ends: 30635 [2021-05-22 02:02:17,975 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 183.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:18,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30635 states. [2021-05-22 02:02:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30635 to 13307. [2021-05-22 02:02:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.328799038027958) internal successors, (70905), 13306 states have internal predecessors, (70905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70905 transitions. [2021-05-22 02:02:19,148 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70905 transitions. Word has length 33 [2021-05-22 02:02:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:19,148 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70905 transitions. [2021-05-22 02:02:19,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:19,148 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70905 transitions. [2021-05-22 02:02:19,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:19,178 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:19,178 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, 1, 1, 1, 1] [2021-05-22 02:02:19,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-05-22 02:02:19,178 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:19,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1127380029, now seen corresponding path program 135 times [2021-05-22 02:02:19,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:19,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74387076] [2021-05-22 02:02:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:19,442 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-05-22 02:02:19,497 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 02:02:19,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:19,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74387076] [2021-05-22 02:02:19,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74387076] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:19,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:19,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:19,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059840971] [2021-05-22 02:02:19,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:19,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:19,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:19,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:19,498 INFO L87 Difference]: Start difference. First operand 13307 states and 70905 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:19,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:19,762 INFO L93 Difference]: Finished difference Result 31741 states and 159662 transitions. [2021-05-22 02:02:19,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:19,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:19,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:19,870 INFO L225 Difference]: With dead ends: 31741 [2021-05-22 02:02:19,870 INFO L226 Difference]: Without dead ends: 30982 [2021-05-22 02:02:19,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 344.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30982 states. [2021-05-22 02:02:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30982 to 13495. [2021-05-22 02:02:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13495 states, 13494 states have (on average 5.31562175781829) internal successors, (71729), 13494 states have internal predecessors, (71729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:21,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 71729 transitions. [2021-05-22 02:02:21,180 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 71729 transitions. Word has length 33 [2021-05-22 02:02:21,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:21,180 INFO L482 AbstractCegarLoop]: Abstraction has 13495 states and 71729 transitions. [2021-05-22 02:02:21,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:21,180 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 71729 transitions. [2021-05-22 02:02:21,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:21,209 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:21,209 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, 1, 1, 1, 1] [2021-05-22 02:02:21,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-05-22 02:02:21,209 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:21,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:21,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1557081307, now seen corresponding path program 136 times [2021-05-22 02:02:21,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:21,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026021828] [2021-05-22 02:02:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:21,391 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 02:02:21,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:21,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026021828] [2021-05-22 02:02:21,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026021828] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:21,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:21,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:21,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753187161] [2021-05-22 02:02:21,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:21,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:21,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:21,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:21,392 INFO L87 Difference]: Start difference. First operand 13495 states and 71729 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:21,608 INFO L93 Difference]: Finished difference Result 31876 states and 160133 transitions. [2021-05-22 02:02:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:21,717 INFO L225 Difference]: With dead ends: 31876 [2021-05-22 02:02:21,717 INFO L226 Difference]: Without dead ends: 30794 [2021-05-22 02:02:21,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 188.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30794 states. [2021-05-22 02:02:22,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30794 to 13307. [2021-05-22 02:02:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.322185480234481) internal successors, (70817), 13306 states have internal predecessors, (70817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70817 transitions. [2021-05-22 02:02:23,000 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70817 transitions. Word has length 33 [2021-05-22 02:02:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:23,000 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70817 transitions. [2021-05-22 02:02:23,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70817 transitions. [2021-05-22 02:02:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:23,028 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:23,028 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:23,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-05-22 02:02:23,029 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:23,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2104679205, now seen corresponding path program 137 times [2021-05-22 02:02:23,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:23,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650433660] [2021-05-22 02:02:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:23,206 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 02:02:23,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:23,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650433660] [2021-05-22 02:02:23,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650433660] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:23,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:23,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:23,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29257828] [2021-05-22 02:02:23,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:23,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:23,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:23,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:23,207 INFO L87 Difference]: Start difference. First operand 13307 states and 70817 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:23,468 INFO L93 Difference]: Finished difference Result 31681 states and 159338 transitions. [2021-05-22 02:02:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:23,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:23,572 INFO L225 Difference]: With dead ends: 31681 [2021-05-22 02:02:23,573 INFO L226 Difference]: Without dead ends: 30946 [2021-05-22 02:02:23,573 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 198.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30946 states. [2021-05-22 02:02:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30946 to 13483. [2021-05-22 02:02:25,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13483 states, 13482 states have (on average 5.310858923008456) internal successors, (71601), 13482 states have internal predecessors, (71601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:25,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71601 transitions. [2021-05-22 02:02:25,196 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71601 transitions. Word has length 33 [2021-05-22 02:02:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:25,196 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71601 transitions. [2021-05-22 02:02:25,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71601 transitions. [2021-05-22 02:02:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:25,230 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:25,231 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, 1, 1, 1, 1] [2021-05-22 02:02:25,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-05-22 02:02:25,231 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:25,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:25,231 INFO L82 PathProgramCache]: Analyzing trace with hash -2029144899, now seen corresponding path program 138 times [2021-05-22 02:02:25,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:25,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678842685] [2021-05-22 02:02:25,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:25,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:25,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678842685] [2021-05-22 02:02:25,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678842685] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:25,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:25,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:25,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051502876] [2021-05-22 02:02:25,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:25,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:25,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:25,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:25,442 INFO L87 Difference]: Start difference. First operand 13483 states and 71601 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:25,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:25,675 INFO L93 Difference]: Finished difference Result 31840 states and 159913 transitions. [2021-05-22 02:02:25,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:25,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:25,781 INFO L225 Difference]: With dead ends: 31840 [2021-05-22 02:02:25,781 INFO L226 Difference]: Without dead ends: 30682 [2021-05-22 02:02:25,781 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 210.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30682 states. [2021-05-22 02:02:27,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30682 to 13219. [2021-05-22 02:02:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 13218 states have (on average 5.327961870177031) internal successors, (70425), 13218 states have internal predecessors, (70425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70425 transitions. [2021-05-22 02:02:27,109 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70425 transitions. Word has length 33 [2021-05-22 02:02:27,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:27,109 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70425 transitions. [2021-05-22 02:02:27,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:27,109 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70425 transitions. [2021-05-22 02:02:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:27,137 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:27,137 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, 1, 1, 1, 1] [2021-05-22 02:02:27,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-05-22 02:02:27,137 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:27,138 INFO L82 PathProgramCache]: Analyzing trace with hash -276468423, now seen corresponding path program 139 times [2021-05-22 02:02:27,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:27,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707478123] [2021-05-22 02:02:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:27,317 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 02:02:27,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:27,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707478123] [2021-05-22 02:02:27,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707478123] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:27,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:27,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:27,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268020895] [2021-05-22 02:02:27,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:27,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:27,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:27,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:27,318 INFO L87 Difference]: Start difference. First operand 13219 states and 70425 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:27,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:27,562 INFO L93 Difference]: Finished difference Result 31478 states and 158515 transitions. [2021-05-22 02:02:27,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:27,562 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:27,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:27,920 INFO L225 Difference]: With dead ends: 31478 [2021-05-22 02:02:27,920 INFO L226 Difference]: Without dead ends: 30727 [2021-05-22 02:02:27,920 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 192.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30727 states. [2021-05-22 02:02:28,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30727 to 13419. [2021-05-22 02:02:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13419 states, 13418 states have (on average 5.31979430615591) internal successors, (71381), 13418 states have internal predecessors, (71381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71381 transitions. [2021-05-22 02:02:29,002 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71381 transitions. Word has length 33 [2021-05-22 02:02:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:29,002 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71381 transitions. [2021-05-22 02:02:29,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71381 transitions. [2021-05-22 02:02:29,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:29,031 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:29,031 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, 1, 1, 1, 1] [2021-05-22 02:02:29,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-05-22 02:02:29,031 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:29,032 INFO L82 PathProgramCache]: Analyzing trace with hash -757370469, now seen corresponding path program 140 times [2021-05-22 02:02:29,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:29,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029098538] [2021-05-22 02:02:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:29,207 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 02:02:29,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:29,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029098538] [2021-05-22 02:02:29,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029098538] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:29,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:29,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:29,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27343918] [2021-05-22 02:02:29,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:29,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:29,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:29,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:29,208 INFO L87 Difference]: Start difference. First operand 13419 states and 71381 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:29,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:29,696 INFO L93 Difference]: Finished difference Result 31462 states and 158339 transitions. [2021-05-22 02:02:29,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:29,697 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:29,804 INFO L225 Difference]: With dead ends: 31462 [2021-05-22 02:02:29,804 INFO L226 Difference]: Without dead ends: 30615 [2021-05-22 02:02:29,804 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 196.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30615 states. [2021-05-22 02:02:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30615 to 13307. [2021-05-22 02:02:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.325492259131219) internal successors, (70861), 13306 states have internal predecessors, (70861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70861 transitions. [2021-05-22 02:02:30,921 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70861 transitions. Word has length 33 [2021-05-22 02:02:30,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:30,921 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70861 transitions. [2021-05-22 02:02:30,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70861 transitions. [2021-05-22 02:02:31,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:31,116 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:31,117 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:31,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-05-22 02:02:31,117 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:31,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:31,117 INFO L82 PathProgramCache]: Analyzing trace with hash -702444389, now seen corresponding path program 141 times [2021-05-22 02:02:31,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:31,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647504038] [2021-05-22 02:02:31,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:31,296 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 02:02:31,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:31,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647504038] [2021-05-22 02:02:31,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647504038] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:31,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:31,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:31,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893664824] [2021-05-22 02:02:31,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:31,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:31,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:31,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:31,297 INFO L87 Difference]: Start difference. First operand 13307 states and 70861 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:31,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:31,539 INFO L93 Difference]: Finished difference Result 31709 states and 159502 transitions. [2021-05-22 02:02:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:31,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:31,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:31,643 INFO L225 Difference]: With dead ends: 31709 [2021-05-22 02:02:31,643 INFO L226 Difference]: Without dead ends: 30958 [2021-05-22 02:02:31,644 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 201.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30958 states. [2021-05-22 02:02:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30958 to 13491. [2021-05-22 02:02:32,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13491 states, 13490 states have (on average 5.313046701260193) internal successors, (71673), 13490 states have internal predecessors, (71673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71673 transitions. [2021-05-22 02:02:32,892 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71673 transitions. Word has length 33 [2021-05-22 02:02:32,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:32,892 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71673 transitions. [2021-05-22 02:02:32,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:32,893 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71673 transitions. [2021-05-22 02:02:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:32,923 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:32,923 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:32,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-05-22 02:02:32,924 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:32,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:32,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1016620187, now seen corresponding path program 142 times [2021-05-22 02:02:32,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:32,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529572253] [2021-05-22 02:02:32,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:33,104 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 02:02:33,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:33,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529572253] [2021-05-22 02:02:33,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529572253] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:33,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:33,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:33,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631433186] [2021-05-22 02:02:33,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:33,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:33,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:33,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:33,105 INFO L87 Difference]: Start difference. First operand 13491 states and 71673 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:33,326 INFO L93 Difference]: Finished difference Result 31852 states and 160005 transitions. [2021-05-22 02:02:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:33,326 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:33,430 INFO L225 Difference]: With dead ends: 31852 [2021-05-22 02:02:33,430 INFO L226 Difference]: Without dead ends: 30774 [2021-05-22 02:02:33,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 184.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30774 states. [2021-05-22 02:02:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30774 to 13307. [2021-05-22 02:02:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.318878701337742) internal successors, (70773), 13306 states have internal predecessors, (70773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70773 transitions. [2021-05-22 02:02:34,723 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70773 transitions. Word has length 33 [2021-05-22 02:02:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:34,723 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70773 transitions. [2021-05-22 02:02:34,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70773 transitions. [2021-05-22 02:02:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:34,752 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:34,752 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, 1, 1, 1, 1] [2021-05-22 02:02:34,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-05-22 02:02:34,752 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:34,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:34,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1491830659, now seen corresponding path program 143 times [2021-05-22 02:02:34,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:34,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320742813] [2021-05-22 02:02:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:34,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:34,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320742813] [2021-05-22 02:02:34,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320742813] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:34,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:34,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:34,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401264867] [2021-05-22 02:02:34,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:34,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:34,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:34,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:34,924 INFO L87 Difference]: Start difference. First operand 13307 states and 70773 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:35,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:35,161 INFO L93 Difference]: Finished difference Result 31669 states and 159250 transitions. [2021-05-22 02:02:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:35,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:35,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:35,267 INFO L225 Difference]: With dead ends: 31669 [2021-05-22 02:02:35,268 INFO L226 Difference]: Without dead ends: 30934 [2021-05-22 02:02:35,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 196.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30934 states. [2021-05-22 02:02:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30934 to 13483. [2021-05-22 02:02:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13483 states, 13482 states have (on average 5.30759531226821) internal successors, (71557), 13482 states have internal predecessors, (71557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71557 transitions. [2021-05-22 02:02:36,588 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71557 transitions. Word has length 33 [2021-05-22 02:02:36,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:36,588 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71557 transitions. [2021-05-22 02:02:36,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71557 transitions. [2021-05-22 02:02:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:36,617 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:36,617 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, 1, 1, 1, 1] [2021-05-22 02:02:36,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-05-22 02:02:36,617 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:36,617 INFO L82 PathProgramCache]: Analyzing trace with hash 849732827, now seen corresponding path program 144 times [2021-05-22 02:02:36,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:36,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551258209] [2021-05-22 02:02:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:36,788 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 02:02:36,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:36,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551258209] [2021-05-22 02:02:36,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551258209] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:36,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:36,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:36,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622142246] [2021-05-22 02:02:36,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:36,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:36,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:36,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:36,789 INFO L87 Difference]: Start difference. First operand 13483 states and 71557 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:37,018 INFO L93 Difference]: Finished difference Result 31828 states and 159825 transitions. [2021-05-22 02:02:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:37,124 INFO L225 Difference]: With dead ends: 31828 [2021-05-22 02:02:37,124 INFO L226 Difference]: Without dead ends: 30626 [2021-05-22 02:02:37,124 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 178.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:38,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30626 states. [2021-05-22 02:02:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30626 to 13175. [2021-05-22 02:02:38,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13175 states, 13174 states have (on average 5.332548960072871) internal successors, (70251), 13174 states have internal predecessors, (70251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13175 states to 13175 states and 70251 transitions. [2021-05-22 02:02:38,501 INFO L78 Accepts]: Start accepts. Automaton has 13175 states and 70251 transitions. Word has length 33 [2021-05-22 02:02:38,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:38,501 INFO L482 AbstractCegarLoop]: Abstraction has 13175 states and 70251 transitions. [2021-05-22 02:02:38,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 13175 states and 70251 transitions. [2021-05-22 02:02:38,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:38,530 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:38,530 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, 1, 1, 1, 1] [2021-05-22 02:02:38,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-05-22 02:02:38,531 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:38,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:38,531 INFO L82 PathProgramCache]: Analyzing trace with hash 450086331, now seen corresponding path program 145 times [2021-05-22 02:02:38,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:38,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311665260] [2021-05-22 02:02:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:38,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:38,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311665260] [2021-05-22 02:02:38,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311665260] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:38,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:38,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:38,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113987350] [2021-05-22 02:02:38,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:38,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:38,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:38,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:38,695 INFO L87 Difference]: Start difference. First operand 13175 states and 70251 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:39,191 INFO L93 Difference]: Finished difference Result 31644 states and 159296 transitions. [2021-05-22 02:02:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:39,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:39,331 INFO L225 Difference]: With dead ends: 31644 [2021-05-22 02:02:39,331 INFO L226 Difference]: Without dead ends: 30885 [2021-05-22 02:02:39,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 188.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30885 states. [2021-05-22 02:02:40,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30885 to 13433. [2021-05-22 02:02:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13433 states, 13432 states have (on average 5.325640262060751) internal successors, (71534), 13432 states have internal predecessors, (71534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13433 states to 13433 states and 71534 transitions. [2021-05-22 02:02:40,447 INFO L78 Accepts]: Start accepts. Automaton has 13433 states and 71534 transitions. Word has length 33 [2021-05-22 02:02:40,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:40,447 INFO L482 AbstractCegarLoop]: Abstraction has 13433 states and 71534 transitions. [2021-05-22 02:02:40,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 13433 states and 71534 transitions. [2021-05-22 02:02:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:40,482 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:40,482 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, 1, 1, 1, 1] [2021-05-22 02:02:40,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-05-22 02:02:40,483 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:40,483 INFO L82 PathProgramCache]: Analyzing trace with hash -396710631, now seen corresponding path program 146 times [2021-05-22 02:02:40,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:40,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482324026] [2021-05-22 02:02:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:40,636 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 02:02:40,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:40,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482324026] [2021-05-22 02:02:40,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482324026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:40,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:40,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:40,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329467492] [2021-05-22 02:02:40,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:40,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:40,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:40,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:40,637 INFO L87 Difference]: Start difference. First operand 13433 states and 71534 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:41,058 INFO L93 Difference]: Finished difference Result 31636 states and 159148 transitions. [2021-05-22 02:02:41,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:41,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:41,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:41,165 INFO L225 Difference]: With dead ends: 31636 [2021-05-22 02:02:41,165 INFO L226 Difference]: Without dead ends: 30765 [2021-05-22 02:02:41,165 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:41,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30765 states. [2021-05-22 02:02:42,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30765 to 13313. [2021-05-22 02:02:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13313 states, 13312 states have (on average 5.332181490384615) internal successors, (70982), 13312 states have internal predecessors, (70982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70982 transitions. [2021-05-22 02:02:42,500 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70982 transitions. Word has length 33 [2021-05-22 02:02:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:42,500 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70982 transitions. [2021-05-22 02:02:42,500 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70982 transitions. [2021-05-22 02:02:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:42,535 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:42,535 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, 1, 1, 1, 1] [2021-05-22 02:02:42,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-05-22 02:02:42,535 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:42,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:42,535 INFO L82 PathProgramCache]: Analyzing trace with hash -2093486661, now seen corresponding path program 147 times [2021-05-22 02:02:42,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:42,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778634127] [2021-05-22 02:02:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:42,727 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 02:02:42,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:42,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778634127] [2021-05-22 02:02:42,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778634127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:42,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:42,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:42,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638596048] [2021-05-22 02:02:42,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:42,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:42,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:42,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:42,728 INFO L87 Difference]: Start difference. First operand 13313 states and 70982 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:42,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:42,973 INFO L93 Difference]: Finished difference Result 31855 states and 160195 transitions. [2021-05-22 02:02:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:42,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:42,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:43,080 INFO L225 Difference]: With dead ends: 31855 [2021-05-22 02:02:43,080 INFO L226 Difference]: Without dead ends: 31096 [2021-05-22 02:02:43,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 218.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31096 states. [2021-05-22 02:02:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31096 to 13501. [2021-05-22 02:02:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13501 states, 13500 states have (on average 5.318962962962963) internal successors, (71806), 13500 states have internal predecessors, (71806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13501 states to 13501 states and 71806 transitions. [2021-05-22 02:02:44,406 INFO L78 Accepts]: Start accepts. Automaton has 13501 states and 71806 transitions. Word has length 33 [2021-05-22 02:02:44,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:44,407 INFO L482 AbstractCegarLoop]: Abstraction has 13501 states and 71806 transitions. [2021-05-22 02:02:44,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:44,407 INFO L276 IsEmpty]: Start isEmpty. Operand 13501 states and 71806 transitions. [2021-05-22 02:02:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:44,436 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:44,437 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:44,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-05-22 02:02:44,437 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:44,437 INFO L82 PathProgramCache]: Analyzing trace with hash 294593979, now seen corresponding path program 148 times [2021-05-22 02:02:44,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:44,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241017115] [2021-05-22 02:02:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:44,617 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 02:02:44,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:44,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241017115] [2021-05-22 02:02:44,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241017115] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:44,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:44,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:44,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187316325] [2021-05-22 02:02:44,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:44,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:44,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:44,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:44,618 INFO L87 Difference]: Start difference. First operand 13501 states and 71806 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:44,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:44,832 INFO L93 Difference]: Finished difference Result 31990 states and 160666 transitions. [2021-05-22 02:02:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:44,833 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:44,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:44,939 INFO L225 Difference]: With dead ends: 31990 [2021-05-22 02:02:44,939 INFO L226 Difference]: Without dead ends: 30908 [2021-05-22 02:02:44,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:45,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30908 states. [2021-05-22 02:02:46,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30908 to 13313. [2021-05-22 02:02:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13313 states, 13312 states have (on average 5.3252704326923075) internal successors, (70890), 13312 states have internal predecessors, (70890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70890 transitions. [2021-05-22 02:02:46,248 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70890 transitions. Word has length 33 [2021-05-22 02:02:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:46,248 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70890 transitions. [2021-05-22 02:02:46,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70890 transitions. [2021-05-22 02:02:46,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:46,278 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:46,278 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, 1, 1, 1, 1] [2021-05-22 02:02:46,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-05-22 02:02:46,278 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:46,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:46,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1344732569, now seen corresponding path program 149 times [2021-05-22 02:02:46,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:46,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281846229] [2021-05-22 02:02:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:46,449 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 02:02:46,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:46,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281846229] [2021-05-22 02:02:46,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281846229] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:46,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:46,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:46,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876496692] [2021-05-22 02:02:46,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:46,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:46,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:46,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:46,450 INFO L87 Difference]: Start difference. First operand 13313 states and 70890 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:46,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:46,678 INFO L93 Difference]: Finished difference Result 31835 states and 160031 transitions. [2021-05-22 02:02:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:46,679 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:46,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:46,783 INFO L225 Difference]: With dead ends: 31835 [2021-05-22 02:02:46,783 INFO L226 Difference]: Without dead ends: 31084 [2021-05-22 02:02:46,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 193.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:47,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31084 states. [2021-05-22 02:02:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31084 to 13497. [2021-05-22 02:02:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13497 states, 13496 states have (on average 5.312833432128038) internal successors, (71702), 13496 states have internal predecessors, (71702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 71702 transitions. [2021-05-22 02:02:48,076 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 71702 transitions. Word has length 33 [2021-05-22 02:02:48,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:48,076 INFO L482 AbstractCegarLoop]: Abstraction has 13497 states and 71702 transitions. [2021-05-22 02:02:48,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:48,076 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 71702 transitions. [2021-05-22 02:02:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:48,105 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:48,105 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, 1, 1, 1, 1] [2021-05-22 02:02:48,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-05-22 02:02:48,105 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:48,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:48,105 INFO L82 PathProgramCache]: Analyzing trace with hash 727209211, now seen corresponding path program 150 times [2021-05-22 02:02:48,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:48,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034761614] [2021-05-22 02:02:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:48,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:48,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034761614] [2021-05-22 02:02:48,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034761614] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:48,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:48,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:48,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104179249] [2021-05-22 02:02:48,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:48,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:48,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:48,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:48,272 INFO L87 Difference]: Start difference. First operand 13497 states and 71702 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:48,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:48,497 INFO L93 Difference]: Finished difference Result 31978 states and 160534 transitions. [2021-05-22 02:02:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:48,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:48,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:48,613 INFO L225 Difference]: With dead ends: 31978 [2021-05-22 02:02:48,613 INFO L226 Difference]: Without dead ends: 30808 [2021-05-22 02:02:48,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 172.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:49,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30808 states. [2021-05-22 02:02:49,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30808 to 13221. [2021-05-22 02:02:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13221 states, 13220 states have (on average 5.33161875945537) internal successors, (70484), 13220 states have internal predecessors, (70484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13221 states to 13221 states and 70484 transitions. [2021-05-22 02:02:49,985 INFO L78 Accepts]: Start accepts. Automaton has 13221 states and 70484 transitions. Word has length 33 [2021-05-22 02:02:49,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:49,985 INFO L482 AbstractCegarLoop]: Abstraction has 13221 states and 70484 transitions. [2021-05-22 02:02:49,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:49,986 INFO L276 IsEmpty]: Start isEmpty. Operand 13221 states and 70484 transitions. [2021-05-22 02:02:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:50,014 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:50,014 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, 1, 1, 1, 1] [2021-05-22 02:02:50,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-05-22 02:02:50,014 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:50,014 INFO L82 PathProgramCache]: Analyzing trace with hash -849025221, now seen corresponding path program 151 times [2021-05-22 02:02:50,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:50,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242086048] [2021-05-22 02:02:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:50,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:50,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242086048] [2021-05-22 02:02:50,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242086048] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:50,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:50,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:50,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918608351] [2021-05-22 02:02:50,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:50,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:50,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:50,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:50,153 INFO L87 Difference]: Start difference. First operand 13221 states and 70484 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:50,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:50,591 INFO L93 Difference]: Finished difference Result 31353 states and 157851 transitions. [2021-05-22 02:02:50,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:50,591 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:50,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:50,696 INFO L225 Difference]: With dead ends: 31353 [2021-05-22 02:02:50,696 INFO L226 Difference]: Without dead ends: 30594 [2021-05-22 02:02:50,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:51,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30594 states. [2021-05-22 02:02:51,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30594 to 13401. [2021-05-22 02:02:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13401 states, 13400 states have (on average 5.321791044776119) internal successors, (71312), 13400 states have internal predecessors, (71312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13401 states to 13401 states and 71312 transitions. [2021-05-22 02:02:51,779 INFO L78 Accepts]: Start accepts. Automaton has 13401 states and 71312 transitions. Word has length 33 [2021-05-22 02:02:51,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:51,779 INFO L482 AbstractCegarLoop]: Abstraction has 13401 states and 71312 transitions. [2021-05-22 02:02:51,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 13401 states and 71312 transitions. [2021-05-22 02:02:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:51,807 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:51,808 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, 1, 1, 1, 1] [2021-05-22 02:02:51,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-05-22 02:02:51,808 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:51,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1695822183, now seen corresponding path program 152 times [2021-05-22 02:02:51,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:51,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289745992] [2021-05-22 02:02:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:52,092 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-22 02:02:52,093 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 02:02:52,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:52,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289745992] [2021-05-22 02:02:52,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289745992] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:52,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:52,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:52,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454133202] [2021-05-22 02:02:52,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:52,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:52,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:52,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:52,094 INFO L87 Difference]: Start difference. First operand 13401 states and 71312 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:52,332 INFO L93 Difference]: Finished difference Result 31345 states and 157703 transitions. [2021-05-22 02:02:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:52,333 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:52,437 INFO L225 Difference]: With dead ends: 31345 [2021-05-22 02:02:52,437 INFO L226 Difference]: Without dead ends: 30474 [2021-05-22 02:02:52,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 310.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:53,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30474 states. [2021-05-22 02:02:53,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30474 to 13281. [2021-05-22 02:02:53,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13281 states, 13280 states have (on average 5.328313253012048) internal successors, (70760), 13280 states have internal predecessors, (70760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13281 states to 13281 states and 70760 transitions. [2021-05-22 02:02:53,757 INFO L78 Accepts]: Start accepts. Automaton has 13281 states and 70760 transitions. Word has length 33 [2021-05-22 02:02:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:53,757 INFO L482 AbstractCegarLoop]: Abstraction has 13281 states and 70760 transitions. [2021-05-22 02:02:53,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 13281 states and 70760 transitions. [2021-05-22 02:02:53,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:53,786 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:53,786 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:53,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-05-22 02:02:53,786 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:53,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:53,787 INFO L82 PathProgramCache]: Analyzing trace with hash 263930969, now seen corresponding path program 153 times [2021-05-22 02:02:53,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:53,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755096148] [2021-05-22 02:02:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:53,939 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 02:02:53,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:53,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755096148] [2021-05-22 02:02:53,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755096148] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:53,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:53,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:53,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314897239] [2021-05-22 02:02:53,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:53,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:53,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:53,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:53,940 INFO L87 Difference]: Start difference. First operand 13281 states and 70760 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:54,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:54,181 INFO L93 Difference]: Finished difference Result 31369 states and 157847 transitions. [2021-05-22 02:02:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:54,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:54,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:54,286 INFO L225 Difference]: With dead ends: 31369 [2021-05-22 02:02:54,287 INFO L226 Difference]: Without dead ends: 30610 [2021-05-22 02:02:54,287 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 173.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:54,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30610 states. [2021-05-22 02:02:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30610 to 13405. [2021-05-22 02:02:55,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13405 states, 13404 states have (on average 5.316621903909281) internal successors, (71264), 13404 states have internal predecessors, (71264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13405 states to 13405 states and 71264 transitions. [2021-05-22 02:02:55,547 INFO L78 Accepts]: Start accepts. Automaton has 13405 states and 71264 transitions. Word has length 33 [2021-05-22 02:02:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:55,547 INFO L482 AbstractCegarLoop]: Abstraction has 13405 states and 71264 transitions. [2021-05-22 02:02:55,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand 13405 states and 71264 transitions. [2021-05-22 02:02:55,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:55,575 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:55,575 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:55,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-05-22 02:02:55,575 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:55,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:55,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1272669095, now seen corresponding path program 154 times [2021-05-22 02:02:55,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:55,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871764935] [2021-05-22 02:02:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:55,722 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 02:02:55,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:55,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871764935] [2021-05-22 02:02:55,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871764935] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:55,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:55,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:55,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72672542] [2021-05-22 02:02:55,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:55,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:55,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:55,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:55,723 INFO L87 Difference]: Start difference. First operand 13405 states and 71264 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:55,962 INFO L93 Difference]: Finished difference Result 31373 states and 157735 transitions. [2021-05-22 02:02:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:55,962 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:56,071 INFO L225 Difference]: With dead ends: 31373 [2021-05-22 02:02:56,071 INFO L226 Difference]: Without dead ends: 30486 [2021-05-22 02:02:56,071 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:57,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30486 states. [2021-05-22 02:02:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30486 to 13281. [2021-05-22 02:02:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13281 states, 13280 states have (on average 5.323795180722891) internal successors, (70700), 13280 states have internal predecessors, (70700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13281 states to 13281 states and 70700 transitions. [2021-05-22 02:02:57,382 INFO L78 Accepts]: Start accepts. Automaton has 13281 states and 70700 transitions. Word has length 33 [2021-05-22 02:02:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:57,382 INFO L482 AbstractCegarLoop]: Abstraction has 13281 states and 70700 transitions. [2021-05-22 02:02:57,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 13281 states and 70700 transitions. [2021-05-22 02:02:57,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:57,411 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:57,411 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, 1, 1, 1, 1] [2021-05-22 02:02:57,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-05-22 02:02:57,412 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:57,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:57,412 INFO L82 PathProgramCache]: Analyzing trace with hash -592817097, now seen corresponding path program 155 times [2021-05-22 02:02:57,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:57,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266590438] [2021-05-22 02:02:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:57,551 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 02:02:57,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:57,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266590438] [2021-05-22 02:02:57,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266590438] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:57,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:57,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:57,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141607204] [2021-05-22 02:02:57,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:57,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:57,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:57,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:57,552 INFO L87 Difference]: Start difference. First operand 13281 states and 70700 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:57,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:57,845 INFO L93 Difference]: Finished difference Result 31349 states and 157715 transitions. [2021-05-22 02:02:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:57,846 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:57,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:57,951 INFO L225 Difference]: With dead ends: 31349 [2021-05-22 02:02:57,952 INFO L226 Difference]: Without dead ends: 30598 [2021-05-22 02:02:57,952 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:02:58,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30598 states. [2021-05-22 02:02:59,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30598 to 13401. [2021-05-22 02:02:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13401 states, 13400 states have (on average 5.312835820895522) internal successors, (71192), 13400 states have internal predecessors, (71192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13401 states to 13401 states and 71192 transitions. [2021-05-22 02:02:59,251 INFO L78 Accepts]: Start accepts. Automaton has 13401 states and 71192 transitions. Word has length 33 [2021-05-22 02:02:59,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:59,251 INFO L482 AbstractCegarLoop]: Abstraction has 13401 states and 71192 transitions. [2021-05-22 02:02:59,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand 13401 states and 71192 transitions. [2021-05-22 02:02:59,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:02:59,279 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:59,279 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:59,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-05-22 02:02:59,279 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:59,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1698511513, now seen corresponding path program 156 times [2021-05-22 02:02:59,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:59,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079060959] [2021-05-22 02:02:59,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:59,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:59,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079060959] [2021-05-22 02:02:59,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079060959] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:59,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:59,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:02:59,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205221806] [2021-05-22 02:02:59,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:02:59,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:59,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:02:59,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:59,416 INFO L87 Difference]: Start difference. First operand 13401 states and 71192 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:59,665 INFO L93 Difference]: Finished difference Result 31361 states and 157635 transitions. [2021-05-22 02:02:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:02:59,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:02:59,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:59,768 INFO L225 Difference]: With dead ends: 31361 [2021-05-22 02:02:59,768 INFO L226 Difference]: Without dead ends: 30418 [2021-05-22 02:02:59,769 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30418 states. [2021-05-22 02:03:00,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30418 to 13221. [2021-05-22 02:03:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13221 states, 13220 states have (on average 5.329349470499244) internal successors, (70454), 13220 states have internal predecessors, (70454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13221 states to 13221 states and 70454 transitions. [2021-05-22 02:03:01,054 INFO L78 Accepts]: Start accepts. Automaton has 13221 states and 70454 transitions. Word has length 33 [2021-05-22 02:03:01,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:01,054 INFO L482 AbstractCegarLoop]: Abstraction has 13221 states and 70454 transitions. [2021-05-22 02:03:01,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:01,055 INFO L276 IsEmpty]: Start isEmpty. Operand 13221 states and 70454 transitions. [2021-05-22 02:03:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:01,082 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:01,082 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, 1, 1, 1, 1] [2021-05-22 02:03:01,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-05-22 02:03:01,082 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:01,082 INFO L82 PathProgramCache]: Analyzing trace with hash 363547737, now seen corresponding path program 157 times [2021-05-22 02:03:01,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:01,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100892262] [2021-05-22 02:03:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:01,248 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 02:03:01,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:01,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100892262] [2021-05-22 02:03:01,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100892262] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:01,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:01,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:01,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63592896] [2021-05-22 02:03:01,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:01,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:01,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:01,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:01,249 INFO L87 Difference]: Start difference. First operand 13221 states and 70454 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:01,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:01,684 INFO L93 Difference]: Finished difference Result 31879 states and 160267 transitions. [2021-05-22 02:03:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:01,685 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:01,790 INFO L225 Difference]: With dead ends: 31879 [2021-05-22 02:03:01,791 INFO L226 Difference]: Without dead ends: 31120 [2021-05-22 02:03:01,791 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 181.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:02,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31120 states. [2021-05-22 02:03:02,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31120 to 13503. [2021-05-22 02:03:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13503 states, 13502 states have (on average 5.317656643460228) internal successors, (71799), 13502 states have internal predecessors, (71799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71799 transitions. [2021-05-22 02:03:02,845 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71799 transitions. Word has length 33 [2021-05-22 02:03:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:02,845 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71799 transitions. [2021-05-22 02:03:02,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:02,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71799 transitions. [2021-05-22 02:03:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:02,873 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:02,873 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, 1, 1, 1, 1] [2021-05-22 02:03:02,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-05-22 02:03:02,873 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:02,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1543338919, now seen corresponding path program 158 times [2021-05-22 02:03:02,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:02,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156818574] [2021-05-22 02:03:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:03,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:03,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156818574] [2021-05-22 02:03:03,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156818574] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:03,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:03,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:03,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661978707] [2021-05-22 02:03:03,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:03,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:03,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:03,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:03,034 INFO L87 Difference]: Start difference. First operand 13503 states and 71799 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:03,369 INFO L93 Difference]: Finished difference Result 32014 states and 160738 transitions. [2021-05-22 02:03:03,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:03,369 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:03,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:03,480 INFO L225 Difference]: With dead ends: 32014 [2021-05-22 02:03:03,481 INFO L226 Difference]: Without dead ends: 30932 [2021-05-22 02:03:03,481 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:04,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30932 states. [2021-05-22 02:03:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30932 to 13315. [2021-05-22 02:03:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 5.3237945020279405) internal successors, (70881), 13314 states have internal predecessors, (70881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70881 transitions. [2021-05-22 02:03:04,799 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70881 transitions. Word has length 33 [2021-05-22 02:03:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:04,800 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70881 transitions. [2021-05-22 02:03:04,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70881 transitions. [2021-05-22 02:03:04,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:04,828 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:04,828 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:04,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-05-22 02:03:04,828 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:04,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:04,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1764665275, now seen corresponding path program 159 times [2021-05-22 02:03:04,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:04,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111228220] [2021-05-22 02:03:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:04,967 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 02:03:04,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:04,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111228220] [2021-05-22 02:03:04,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111228220] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:04,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:04,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:04,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571745531] [2021-05-22 02:03:04,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:04,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:04,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:04,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:04,968 INFO L87 Difference]: Start difference. First operand 13315 states and 70881 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:05,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:05,202 INFO L93 Difference]: Finished difference Result 31684 states and 159270 transitions. [2021-05-22 02:03:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:05,203 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:05,306 INFO L225 Difference]: With dead ends: 31684 [2021-05-22 02:03:05,306 INFO L226 Difference]: Without dead ends: 30925 [2021-05-22 02:03:05,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:06,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30925 states. [2021-05-22 02:03:06,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30925 to 13439. [2021-05-22 02:03:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13439 states, 13438 states have (on average 5.312174430718857) internal successors, (71385), 13438 states have internal predecessors, (71385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13439 states to 13439 states and 71385 transitions. [2021-05-22 02:03:06,591 INFO L78 Accepts]: Start accepts. Automaton has 13439 states and 71385 transitions. Word has length 33 [2021-05-22 02:03:06,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:06,591 INFO L482 AbstractCegarLoop]: Abstraction has 13439 states and 71385 transitions. [2021-05-22 02:03:06,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:06,591 INFO L276 IsEmpty]: Start isEmpty. Operand 13439 states and 71385 transitions. [2021-05-22 02:03:06,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:06,620 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:06,620 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:06,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-05-22 02:03:06,620 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:06,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1809922983, now seen corresponding path program 160 times [2021-05-22 02:03:06,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:06,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197898870] [2021-05-22 02:03:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:06,787 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 02:03:06,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:06,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197898870] [2021-05-22 02:03:06,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197898870] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:06,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:06,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:06,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388426257] [2021-05-22 02:03:06,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:06,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:06,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:06,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:06,788 INFO L87 Difference]: Start difference. First operand 13439 states and 71385 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:07,027 INFO L93 Difference]: Finished difference Result 31688 states and 159158 transitions. [2021-05-22 02:03:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:07,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:07,128 INFO L225 Difference]: With dead ends: 31688 [2021-05-22 02:03:07,129 INFO L226 Difference]: Without dead ends: 30801 [2021-05-22 02:03:07,129 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 187.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:08,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30801 states. [2021-05-22 02:03:08,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30801 to 13315. [2021-05-22 02:03:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13315 states, 13314 states have (on average 5.319137749737119) internal successors, (70819), 13314 states have internal predecessors, (70819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70819 transitions. [2021-05-22 02:03:08,406 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70819 transitions. Word has length 33 [2021-05-22 02:03:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:08,406 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70819 transitions. [2021-05-22 02:03:08,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:08,406 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70819 transitions. [2021-05-22 02:03:08,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:08,434 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:08,434 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, 1, 1, 1, 1] [2021-05-22 02:03:08,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-05-22 02:03:08,434 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:08,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:08,434 INFO L82 PathProgramCache]: Analyzing trace with hash -747250599, now seen corresponding path program 161 times [2021-05-22 02:03:08,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:08,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078939028] [2021-05-22 02:03:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:08,575 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 02:03:08,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:08,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078939028] [2021-05-22 02:03:08,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078939028] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:08,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:08,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:08,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075140703] [2021-05-22 02:03:08,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:08,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:08,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:08,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:08,576 INFO L87 Difference]: Start difference. First operand 13315 states and 70819 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:08,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:08,794 INFO L93 Difference]: Finished difference Result 32020 states and 160725 transitions. [2021-05-22 02:03:08,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:08,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:08,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:08,901 INFO L225 Difference]: With dead ends: 32020 [2021-05-22 02:03:08,901 INFO L226 Difference]: Without dead ends: 31126 [2021-05-22 02:03:08,901 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 145.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31126 states. [2021-05-22 02:03:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31126 to 13505. [2021-05-22 02:03:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13505 states, 13504 states have (on average 5.300947867298579) internal successors, (71584), 13504 states have internal predecessors, (71584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13505 states to 13505 states and 71584 transitions. [2021-05-22 02:03:10,224 INFO L78 Accepts]: Start accepts. Automaton has 13505 states and 71584 transitions. Word has length 33 [2021-05-22 02:03:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:10,224 INFO L482 AbstractCegarLoop]: Abstraction has 13505 states and 71584 transitions. [2021-05-22 02:03:10,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:10,224 INFO L276 IsEmpty]: Start isEmpty. Operand 13505 states and 71584 transitions. [2021-05-22 02:03:10,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:10,254 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:10,254 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, 1, 1, 1, 1] [2021-05-22 02:03:10,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-05-22 02:03:10,254 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:10,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:10,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1921210309, now seen corresponding path program 162 times [2021-05-22 02:03:10,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:10,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609622341] [2021-05-22 02:03:10,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:10,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:10,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609622341] [2021-05-22 02:03:10,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609622341] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:10,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:10,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:10,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984277352] [2021-05-22 02:03:10,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:10,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:10,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:10,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:10,393 INFO L87 Difference]: Start difference. First operand 13505 states and 71584 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:10,641 INFO L93 Difference]: Finished difference Result 31889 states and 159952 transitions. [2021-05-22 02:03:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:10,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:10,748 INFO L225 Difference]: With dead ends: 31889 [2021-05-22 02:03:10,748 INFO L226 Difference]: Without dead ends: 30842 [2021-05-22 02:03:10,748 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30842 states. [2021-05-22 02:03:12,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30842 to 13221. [2021-05-22 02:03:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13221 states, 13220 states have (on average 5.325869894099848) internal successors, (70408), 13220 states have internal predecessors, (70408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13221 states to 13221 states and 70408 transitions. [2021-05-22 02:03:12,079 INFO L78 Accepts]: Start accepts. Automaton has 13221 states and 70408 transitions. Word has length 33 [2021-05-22 02:03:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:12,079 INFO L482 AbstractCegarLoop]: Abstraction has 13221 states and 70408 transitions. [2021-05-22 02:03:12,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 13221 states and 70408 transitions. [2021-05-22 02:03:12,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:12,107 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:12,107 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:12,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-05-22 02:03:12,107 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:12,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:12,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1466276681, now seen corresponding path program 163 times [2021-05-22 02:03:12,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:12,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066573211] [2021-05-22 02:03:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:12,264 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 02:03:12,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:12,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066573211] [2021-05-22 02:03:12,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066573211] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:12,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:12,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:12,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464588115] [2021-05-22 02:03:12,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:12,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:12,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:12,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:12,265 INFO L87 Difference]: Start difference. First operand 13221 states and 70408 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:12,695 INFO L93 Difference]: Finished difference Result 31841 states and 160080 transitions. [2021-05-22 02:03:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:12,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:12,806 INFO L225 Difference]: With dead ends: 31841 [2021-05-22 02:03:12,806 INFO L226 Difference]: Without dead ends: 31090 [2021-05-22 02:03:12,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 184.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:13,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31090 states. [2021-05-22 02:03:13,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31090 to 13497. [2021-05-22 02:03:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13497 states, 13496 states have (on average 5.315056312981624) internal successors, (71732), 13496 states have internal predecessors, (71732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 71732 transitions. [2021-05-22 02:03:13,936 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 71732 transitions. Word has length 33 [2021-05-22 02:03:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:13,936 INFO L482 AbstractCegarLoop]: Abstraction has 13497 states and 71732 transitions. [2021-05-22 02:03:13,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:13,936 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 71732 transitions. [2021-05-22 02:03:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:13,966 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:13,966 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, 1, 1, 1, 1] [2021-05-22 02:03:13,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-05-22 02:03:13,966 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:13,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:13,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2083800039, now seen corresponding path program 164 times [2021-05-22 02:03:13,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:13,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792313444] [2021-05-22 02:03:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:14,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:14,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792313444] [2021-05-22 02:03:14,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792313444] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:14,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:14,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:14,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352020282] [2021-05-22 02:03:14,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:14,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:14,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:14,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:14,285 INFO L87 Difference]: Start difference. First operand 13497 states and 71732 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:14,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:14,504 INFO L93 Difference]: Finished difference Result 31984 states and 160583 transitions. [2021-05-22 02:03:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:14,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:14,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:14,606 INFO L225 Difference]: With dead ends: 31984 [2021-05-22 02:03:14,606 INFO L226 Difference]: Without dead ends: 30906 [2021-05-22 02:03:14,606 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 318.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:15,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30906 states. [2021-05-22 02:03:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30906 to 13313. [2021-05-22 02:03:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13313 states, 13312 states have (on average 5.320612980769231) internal successors, (70828), 13312 states have internal predecessors, (70828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70828 transitions. [2021-05-22 02:03:15,951 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70828 transitions. Word has length 33 [2021-05-22 02:03:15,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:15,951 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70828 transitions. [2021-05-22 02:03:15,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70828 transitions. [2021-05-22 02:03:15,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:15,980 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:15,980 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, 1, 1, 1, 1] [2021-05-22 02:03:15,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-05-22 02:03:15,980 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:15,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:15,981 INFO L82 PathProgramCache]: Analyzing trace with hash -65159143, now seen corresponding path program 165 times [2021-05-22 02:03:15,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:15,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896741630] [2021-05-22 02:03:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:16,124 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 02:03:16,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:16,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896741630] [2021-05-22 02:03:16,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896741630] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:16,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:16,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:16,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174552347] [2021-05-22 02:03:16,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:16,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:16,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:16,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:16,125 INFO L87 Difference]: Start difference. First operand 13313 states and 70828 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:16,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:16,372 INFO L93 Difference]: Finished difference Result 31646 states and 159085 transitions. [2021-05-22 02:03:16,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:16,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:16,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:16,482 INFO L225 Difference]: With dead ends: 31646 [2021-05-22 02:03:16,483 INFO L226 Difference]: Without dead ends: 30895 [2021-05-22 02:03:16,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:17,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30895 states. [2021-05-22 02:03:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30895 to 13433. [2021-05-22 02:03:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13433 states, 13432 states have (on average 5.309708159618821) internal successors, (71320), 13432 states have internal predecessors, (71320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13433 states to 13433 states and 71320 transitions. [2021-05-22 02:03:17,782 INFO L78 Accepts]: Start accepts. Automaton has 13433 states and 71320 transitions. Word has length 33 [2021-05-22 02:03:17,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:17,782 INFO L482 AbstractCegarLoop]: Abstraction has 13433 states and 71320 transitions. [2021-05-22 02:03:17,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 13433 states and 71320 transitions. [2021-05-22 02:03:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:17,811 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:17,811 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, 1, 1, 1, 1] [2021-05-22 02:03:17,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-05-22 02:03:17,811 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:17,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:17,811 INFO L82 PathProgramCache]: Analyzing trace with hash 188181273, now seen corresponding path program 166 times [2021-05-22 02:03:17,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:17,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700208699] [2021-05-22 02:03:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:17,949 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 02:03:17,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:17,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700208699] [2021-05-22 02:03:17,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700208699] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:17,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:17,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:17,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294305852] [2021-05-22 02:03:17,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:17,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:17,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:17,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:17,950 INFO L87 Difference]: Start difference. First operand 13433 states and 71320 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:18,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:18,183 INFO L93 Difference]: Finished difference Result 31658 states and 159005 transitions. [2021-05-22 02:03:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:18,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:18,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:18,293 INFO L225 Difference]: With dead ends: 31658 [2021-05-22 02:03:18,294 INFO L226 Difference]: Without dead ends: 30775 [2021-05-22 02:03:18,294 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:19,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30775 states. [2021-05-22 02:03:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30775 to 13313. [2021-05-22 02:03:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13313 states, 13312 states have (on average 5.316105769230769) internal successors, (70768), 13312 states have internal predecessors, (70768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70768 transitions. [2021-05-22 02:03:19,557 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70768 transitions. Word has length 33 [2021-05-22 02:03:19,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:19,557 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70768 transitions. [2021-05-22 02:03:19,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:19,557 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70768 transitions. [2021-05-22 02:03:19,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:19,585 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:19,585 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, 1, 1, 1, 1] [2021-05-22 02:03:19,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-05-22 02:03:19,585 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:19,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:19,585 INFO L82 PathProgramCache]: Analyzing trace with hash 859738619, now seen corresponding path program 167 times [2021-05-22 02:03:19,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:19,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750549947] [2021-05-22 02:03:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:19,722 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 02:03:19,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:19,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750549947] [2021-05-22 02:03:19,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750549947] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:19,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:19,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:19,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905574594] [2021-05-22 02:03:19,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:19,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:19,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:19,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:19,723 INFO L87 Difference]: Start difference. First operand 13313 states and 70768 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:19,936 INFO L93 Difference]: Finished difference Result 32002 states and 160614 transitions. [2021-05-22 02:03:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:19,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:20,034 INFO L225 Difference]: With dead ends: 32002 [2021-05-22 02:03:20,034 INFO L226 Difference]: Without dead ends: 31108 [2021-05-22 02:03:20,034 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 143.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31108 states. [2021-05-22 02:03:21,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31108 to 13503. [2021-05-22 02:03:21,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13503 states, 13502 states have (on average 5.297955858391349) internal successors, (71533), 13502 states have internal predecessors, (71533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71533 transitions. [2021-05-22 02:03:21,313 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71533 transitions. Word has length 33 [2021-05-22 02:03:21,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:21,313 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71533 transitions. [2021-05-22 02:03:21,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:21,313 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71533 transitions. [2021-05-22 02:03:21,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:21,341 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:21,341 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, 1, 1, 1, 1] [2021-05-22 02:03:21,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-05-22 02:03:21,342 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:21,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:21,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1173274023, now seen corresponding path program 168 times [2021-05-22 02:03:21,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:21,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949347596] [2021-05-22 02:03:21,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:21,492 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 02:03:21,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:21,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949347596] [2021-05-22 02:03:21,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949347596] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:21,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:21,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:21,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109648274] [2021-05-22 02:03:21,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:21,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:21,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:21,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:21,493 INFO L87 Difference]: Start difference. First operand 13503 states and 71533 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:21,746 INFO L93 Difference]: Finished difference Result 31871 states and 159841 transitions. [2021-05-22 02:03:21,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:21,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:21,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:21,848 INFO L225 Difference]: With dead ends: 31871 [2021-05-22 02:03:21,848 INFO L226 Difference]: Without dead ends: 30780 [2021-05-22 02:03:21,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30780 states. [2021-05-22 02:03:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30780 to 13175. [2021-05-22 02:03:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13175 states, 13174 states have (on average 5.330879004098983) internal successors, (70229), 13174 states have internal predecessors, (70229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13175 states to 13175 states and 70229 transitions. [2021-05-22 02:03:23,139 INFO L78 Accepts]: Start accepts. Automaton has 13175 states and 70229 transitions. Word has length 33 [2021-05-22 02:03:23,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:23,139 INFO L482 AbstractCegarLoop]: Abstraction has 13175 states and 70229 transitions. [2021-05-22 02:03:23,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:23,139 INFO L276 IsEmpty]: Start isEmpty. Operand 13175 states and 70229 transitions. [2021-05-22 02:03:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:23,167 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:23,167 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:23,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-05-22 02:03:23,167 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:23,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:23,167 INFO L82 PathProgramCache]: Analyzing trace with hash 2039190461, now seen corresponding path program 169 times [2021-05-22 02:03:23,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:23,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094786524] [2021-05-22 02:03:23,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:23,304 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 02:03:23,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:23,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094786524] [2021-05-22 02:03:23,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094786524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:23,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:23,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:23,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747749755] [2021-05-22 02:03:23,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:23,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:23,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:23,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:23,305 INFO L87 Difference]: Start difference. First operand 13175 states and 70229 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:23,752 INFO L93 Difference]: Finished difference Result 30788 states and 155165 transitions. [2021-05-22 02:03:23,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:23,753 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:23,858 INFO L225 Difference]: With dead ends: 30788 [2021-05-22 02:03:23,858 INFO L226 Difference]: Without dead ends: 30029 [2021-05-22 02:03:23,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:24,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30029 states. [2021-05-22 02:03:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30029 to 13379. [2021-05-22 02:03:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 5.322843474360891) internal successors, (71209), 13378 states have internal predecessors, (71209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71209 transitions. [2021-05-22 02:03:24,947 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71209 transitions. Word has length 33 [2021-05-22 02:03:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:24,948 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71209 transitions. [2021-05-22 02:03:24,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71209 transitions. [2021-05-22 02:03:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:24,982 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:24,982 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, 1, 1, 1, 1] [2021-05-22 02:03:24,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-05-22 02:03:24,982 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:24,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1192393499, now seen corresponding path program 170 times [2021-05-22 02:03:24,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:24,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298375057] [2021-05-22 02:03:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:25,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:25,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298375057] [2021-05-22 02:03:25,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298375057] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:25,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:25,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:25,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364885751] [2021-05-22 02:03:25,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:25,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:25,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:25,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:25,133 INFO L87 Difference]: Start difference. First operand 13379 states and 71209 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:25,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:25,500 INFO L93 Difference]: Finished difference Result 30780 states and 155017 transitions. [2021-05-22 02:03:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:25,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:25,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:25,606 INFO L225 Difference]: With dead ends: 30780 [2021-05-22 02:03:25,606 INFO L226 Difference]: Without dead ends: 29909 [2021-05-22 02:03:25,606 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29909 states. [2021-05-22 02:03:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29909 to 13259. [2021-05-22 02:03:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13259 states, 13258 states have (on average 5.329687735706743) internal successors, (70661), 13258 states have internal predecessors, (70661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70661 transitions. [2021-05-22 02:03:26,920 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70661 transitions. Word has length 33 [2021-05-22 02:03:26,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:26,920 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70661 transitions. [2021-05-22 02:03:26,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70661 transitions. [2021-05-22 02:03:26,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:26,952 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:26,952 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, 1, 1, 1, 1] [2021-05-22 02:03:26,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-05-22 02:03:26,952 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:26,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:26,953 INFO L82 PathProgramCache]: Analyzing trace with hash 16128923, now seen corresponding path program 171 times [2021-05-22 02:03:26,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:26,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629460513] [2021-05-22 02:03:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:27,091 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 02:03:27,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:27,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629460513] [2021-05-22 02:03:27,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629460513] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:27,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:27,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:27,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380953580] [2021-05-22 02:03:27,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:27,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:27,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:27,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:27,092 INFO L87 Difference]: Start difference. First operand 13259 states and 70661 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:27,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:27,334 INFO L93 Difference]: Finished difference Result 30764 states and 155009 transitions. [2021-05-22 02:03:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:27,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:27,439 INFO L225 Difference]: With dead ends: 30764 [2021-05-22 02:03:27,439 INFO L226 Difference]: Without dead ends: 30005 [2021-05-22 02:03:27,439 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:28,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30005 states. [2021-05-22 02:03:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30005 to 13371. [2021-05-22 02:03:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.319745699326851) internal successors, (71125), 13370 states have internal predecessors, (71125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71125 transitions. [2021-05-22 02:03:28,721 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71125 transitions. Word has length 33 [2021-05-22 02:03:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:28,721 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71125 transitions. [2021-05-22 02:03:28,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71125 transitions. [2021-05-22 02:03:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:28,749 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:28,749 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, 1, 1, 1, 1] [2021-05-22 02:03:28,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-05-22 02:03:28,749 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:28,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:28,749 INFO L82 PathProgramCache]: Analyzing trace with hash -779897957, now seen corresponding path program 172 times [2021-05-22 02:03:28,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:28,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577821835] [2021-05-22 02:03:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:28,883 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 02:03:28,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:28,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577821835] [2021-05-22 02:03:28,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577821835] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:28,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:28,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:28,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872106980] [2021-05-22 02:03:28,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:28,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:28,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:28,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:28,884 INFO L87 Difference]: Start difference. First operand 13371 states and 71125 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:29,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:29,107 INFO L93 Difference]: Finished difference Result 30740 states and 154805 transitions. [2021-05-22 02:03:29,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:29,107 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:29,207 INFO L225 Difference]: With dead ends: 30740 [2021-05-22 02:03:29,207 INFO L226 Difference]: Without dead ends: 29893 [2021-05-22 02:03:29,207 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:29,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29893 states. [2021-05-22 02:03:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29893 to 13259. [2021-05-22 02:03:30,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13259 states, 13258 states have (on average 5.325463870870418) internal successors, (70605), 13258 states have internal predecessors, (70605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70605 transitions. [2021-05-22 02:03:30,430 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70605 transitions. Word has length 33 [2021-05-22 02:03:30,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:30,430 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70605 transitions. [2021-05-22 02:03:30,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70605 transitions. [2021-05-22 02:03:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:30,457 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:30,457 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, 1, 1, 1, 1] [2021-05-22 02:03:30,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-05-22 02:03:30,458 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:30,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:30,458 INFO L82 PathProgramCache]: Analyzing trace with hash -840619143, now seen corresponding path program 173 times [2021-05-22 02:03:30,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:30,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287722759] [2021-05-22 02:03:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:30,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:30,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287722759] [2021-05-22 02:03:30,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287722759] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:30,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:30,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:30,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901037067] [2021-05-22 02:03:30,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:30,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:30,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:30,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:30,595 INFO L87 Difference]: Start difference. First operand 13259 states and 70605 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:30,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:30,880 INFO L93 Difference]: Finished difference Result 30748 states and 154897 transitions. [2021-05-22 02:03:30,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:30,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:30,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:30,987 INFO L225 Difference]: With dead ends: 30748 [2021-05-22 02:03:30,987 INFO L226 Difference]: Without dead ends: 29997 [2021-05-22 02:03:30,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29997 states. [2021-05-22 02:03:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29997 to 13371. [2021-05-22 02:03:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.315557217651459) internal successors, (71069), 13370 states have internal predecessors, (71069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:32,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71069 transitions. [2021-05-22 02:03:32,234 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71069 transitions. Word has length 33 [2021-05-22 02:03:32,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:32,234 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71069 transitions. [2021-05-22 02:03:32,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:32,234 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71069 transitions. [2021-05-22 02:03:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:32,261 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:32,261 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, 1, 1, 1, 1] [2021-05-22 02:03:32,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-05-22 02:03:32,262 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:32,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:32,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1321521189, now seen corresponding path program 174 times [2021-05-22 02:03:32,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:32,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123832459] [2021-05-22 02:03:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:32,396 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 02:03:32,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:32,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123832459] [2021-05-22 02:03:32,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123832459] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:32,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:32,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:32,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606620682] [2021-05-22 02:03:32,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:32,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:32,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:32,397 INFO L87 Difference]: Start difference. First operand 13371 states and 71069 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:32,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:32,614 INFO L93 Difference]: Finished difference Result 30732 states and 154721 transitions. [2021-05-22 02:03:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:32,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:32,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:32,709 INFO L225 Difference]: With dead ends: 30732 [2021-05-22 02:03:32,709 INFO L226 Difference]: Without dead ends: 29829 [2021-05-22 02:03:32,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:33,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29829 states. [2021-05-22 02:03:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29829 to 13203. [2021-05-22 02:03:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13203 states, 13202 states have (on average 5.330480230268141) internal successors, (70373), 13202 states have internal predecessors, (70373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:33,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13203 states to 13203 states and 70373 transitions. [2021-05-22 02:03:33,985 INFO L78 Accepts]: Start accepts. Automaton has 13203 states and 70373 transitions. Word has length 33 [2021-05-22 02:03:33,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:33,985 INFO L482 AbstractCegarLoop]: Abstraction has 13203 states and 70373 transitions. [2021-05-22 02:03:33,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:33,985 INFO L276 IsEmpty]: Start isEmpty. Operand 13203 states and 70373 transitions. [2021-05-22 02:03:34,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:34,012 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:34,012 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, 1, 1, 1, 1] [2021-05-22 02:03:34,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-05-22 02:03:34,012 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:34,012 INFO L82 PathProgramCache]: Analyzing trace with hash -275906499, now seen corresponding path program 175 times [2021-05-22 02:03:34,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:34,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177780114] [2021-05-22 02:03:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:34,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:34,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177780114] [2021-05-22 02:03:34,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177780114] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:34,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:34,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:34,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318435226] [2021-05-22 02:03:34,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:34,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:34,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:34,149 INFO L87 Difference]: Start difference. First operand 13203 states and 70373 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:34,378 INFO L93 Difference]: Finished difference Result 30840 states and 155349 transitions. [2021-05-22 02:03:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:34,378 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:34,711 INFO L225 Difference]: With dead ends: 30840 [2021-05-22 02:03:34,711 INFO L226 Difference]: Without dead ends: 30081 [2021-05-22 02:03:34,711 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:35,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30081 states. [2021-05-22 02:03:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30081 to 13383. [2021-05-22 02:03:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13383 states, 13382 states have (on average 5.320654610671051) internal successors, (71201), 13382 states have internal predecessors, (71201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:35,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13383 states to 13383 states and 71201 transitions. [2021-05-22 02:03:35,755 INFO L78 Accepts]: Start accepts. Automaton has 13383 states and 71201 transitions. Word has length 33 [2021-05-22 02:03:35,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:35,755 INFO L482 AbstractCegarLoop]: Abstraction has 13383 states and 71201 transitions. [2021-05-22 02:03:35,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:35,755 INFO L276 IsEmpty]: Start isEmpty. Operand 13383 states and 71201 transitions. [2021-05-22 02:03:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:35,784 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:35,784 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, 1, 1, 1, 1] [2021-05-22 02:03:35,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-05-22 02:03:35,784 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:35,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:35,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1122703461, now seen corresponding path program 176 times [2021-05-22 02:03:35,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:35,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926775197] [2021-05-22 02:03:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:35,920 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 02:03:35,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:35,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926775197] [2021-05-22 02:03:35,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926775197] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:35,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:35,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:35,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67744186] [2021-05-22 02:03:35,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:35,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:35,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:35,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:35,921 INFO L87 Difference]: Start difference. First operand 13383 states and 71201 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:36,347 INFO L93 Difference]: Finished difference Result 30832 states and 155201 transitions. [2021-05-22 02:03:36,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:36,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:36,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:36,450 INFO L225 Difference]: With dead ends: 30832 [2021-05-22 02:03:36,451 INFO L226 Difference]: Without dead ends: 29961 [2021-05-22 02:03:36,451 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:37,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29961 states. [2021-05-22 02:03:37,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29961 to 13263. [2021-05-22 02:03:37,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13263 states, 13262 states have (on average 5.327175388327553) internal successors, (70649), 13262 states have internal predecessors, (70649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13263 states to 13263 states and 70649 transitions. [2021-05-22 02:03:37,522 INFO L78 Accepts]: Start accepts. Automaton has 13263 states and 70649 transitions. Word has length 33 [2021-05-22 02:03:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:37,522 INFO L482 AbstractCegarLoop]: Abstraction has 13263 states and 70649 transitions. [2021-05-22 02:03:37,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 13263 states and 70649 transitions. [2021-05-22 02:03:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:37,549 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:37,549 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, 1, 1, 1, 1] [2021-05-22 02:03:37,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-05-22 02:03:37,550 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:37,550 INFO L82 PathProgramCache]: Analyzing trace with hash 838617149, now seen corresponding path program 177 times [2021-05-22 02:03:37,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:37,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686790053] [2021-05-22 02:03:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:37,858 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 02:03:37,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:37,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686790053] [2021-05-22 02:03:37,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686790053] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:37,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:37,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:37,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870449049] [2021-05-22 02:03:37,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:37,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:37,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:37,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:37,860 INFO L87 Difference]: Start difference. First operand 13263 states and 70649 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:38,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:38,115 INFO L93 Difference]: Finished difference Result 30856 states and 155345 transitions. [2021-05-22 02:03:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:38,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:38,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:38,216 INFO L225 Difference]: With dead ends: 30856 [2021-05-22 02:03:38,216 INFO L226 Difference]: Without dead ends: 30097 [2021-05-22 02:03:38,216 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 193.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30097 states. [2021-05-22 02:03:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30097 to 13387. [2021-05-22 02:03:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13387 states, 13386 states have (on average 5.3154788585088895) internal successors, (71153), 13386 states have internal predecessors, (71153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71153 transitions. [2021-05-22 02:03:39,450 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71153 transitions. Word has length 33 [2021-05-22 02:03:39,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:39,450 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71153 transitions. [2021-05-22 02:03:39,450 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71153 transitions. [2021-05-22 02:03:39,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:39,478 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:39,478 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, 1, 1, 1, 1] [2021-05-22 02:03:39,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-05-22 02:03:39,478 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:39,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:39,478 INFO L82 PathProgramCache]: Analyzing trace with hash -697982915, now seen corresponding path program 178 times [2021-05-22 02:03:39,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:39,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698474398] [2021-05-22 02:03:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:39,625 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 02:03:39,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:39,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698474398] [2021-05-22 02:03:39,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698474398] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:39,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:39,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:39,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905794520] [2021-05-22 02:03:39,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:39,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:39,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:39,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:39,626 INFO L87 Difference]: Start difference. First operand 13387 states and 71153 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:39,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:39,861 INFO L93 Difference]: Finished difference Result 30860 states and 155233 transitions. [2021-05-22 02:03:39,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:39,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:39,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:39,957 INFO L225 Difference]: With dead ends: 30860 [2021-05-22 02:03:39,957 INFO L226 Difference]: Without dead ends: 29973 [2021-05-22 02:03:39,957 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29973 states. [2021-05-22 02:03:41,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29973 to 13263. [2021-05-22 02:03:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13263 states, 13262 states have (on average 5.322651183833509) internal successors, (70589), 13262 states have internal predecessors, (70589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13263 states to 13263 states and 70589 transitions. [2021-05-22 02:03:41,199 INFO L78 Accepts]: Start accepts. Automaton has 13263 states and 70589 transitions. Word has length 33 [2021-05-22 02:03:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:41,199 INFO L482 AbstractCegarLoop]: Abstraction has 13263 states and 70589 transitions. [2021-05-22 02:03:41,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 13263 states and 70589 transitions. [2021-05-22 02:03:41,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:41,227 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:41,227 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, 1, 1, 1, 1] [2021-05-22 02:03:41,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-05-22 02:03:41,227 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:41,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:41,228 INFO L82 PathProgramCache]: Analyzing trace with hash -18130917, now seen corresponding path program 179 times [2021-05-22 02:03:41,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:41,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245977551] [2021-05-22 02:03:41,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:41,363 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 02:03:41,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:41,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245977551] [2021-05-22 02:03:41,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245977551] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:41,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:41,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:41,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898053858] [2021-05-22 02:03:41,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:41,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:41,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:41,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:41,364 INFO L87 Difference]: Start difference. First operand 13263 states and 70589 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:41,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:41,613 INFO L93 Difference]: Finished difference Result 30836 states and 155213 transitions. [2021-05-22 02:03:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:41,613 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:41,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:41,716 INFO L225 Difference]: With dead ends: 30836 [2021-05-22 02:03:41,716 INFO L226 Difference]: Without dead ends: 30085 [2021-05-22 02:03:41,716 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:42,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30085 states. [2021-05-22 02:03:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30085 to 13383. [2021-05-22 02:03:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13383 states, 13382 states have (on average 5.311687341204603) internal successors, (71081), 13382 states have internal predecessors, (71081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13383 states to 13383 states and 71081 transitions. [2021-05-22 02:03:42,993 INFO L78 Accepts]: Start accepts. Automaton has 13383 states and 71081 transitions. Word has length 33 [2021-05-22 02:03:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:42,993 INFO L482 AbstractCegarLoop]: Abstraction has 13383 states and 71081 transitions. [2021-05-22 02:03:42,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 13383 states and 71081 transitions. [2021-05-22 02:03:43,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:43,022 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:43,022 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, 1, 1, 1, 1] [2021-05-22 02:03:43,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-05-22 02:03:43,022 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:43,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:43,022 INFO L82 PathProgramCache]: Analyzing trace with hash -2021769603, now seen corresponding path program 180 times [2021-05-22 02:03:43,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:43,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49106401] [2021-05-22 02:03:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:43,177 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 02:03:43,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:43,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49106401] [2021-05-22 02:03:43,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49106401] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:43,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:43,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:43,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127396250] [2021-05-22 02:03:43,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:43,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:43,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:43,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:43,178 INFO L87 Difference]: Start difference. First operand 13383 states and 71081 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:43,423 INFO L93 Difference]: Finished difference Result 30848 states and 155133 transitions. [2021-05-22 02:03:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:43,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:43,524 INFO L225 Difference]: With dead ends: 30848 [2021-05-22 02:03:43,524 INFO L226 Difference]: Without dead ends: 29905 [2021-05-22 02:03:43,524 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29905 states. [2021-05-22 02:03:44,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29905 to 13203. [2021-05-22 02:03:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13203 states, 13202 states have (on average 5.328359339494016) internal successors, (70345), 13202 states have internal predecessors, (70345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:44,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13203 states to 13203 states and 70345 transitions. [2021-05-22 02:03:44,795 INFO L78 Accepts]: Start accepts. Automaton has 13203 states and 70345 transitions. Word has length 33 [2021-05-22 02:03:44,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:44,795 INFO L482 AbstractCegarLoop]: Abstraction has 13203 states and 70345 transitions. [2021-05-22 02:03:44,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 13203 states and 70345 transitions. [2021-05-22 02:03:44,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:44,823 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:44,823 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, 1, 1, 1, 1] [2021-05-22 02:03:44,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-05-22 02:03:44,823 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:44,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:44,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1022922907, now seen corresponding path program 181 times [2021-05-22 02:03:44,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:44,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307873772] [2021-05-22 02:03:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:44,957 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 02:03:44,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:44,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307873772] [2021-05-22 02:03:44,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307873772] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:44,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:44,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:44,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553460450] [2021-05-22 02:03:44,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:44,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:44,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:44,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:44,958 INFO L87 Difference]: Start difference. First operand 13203 states and 70345 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:45,204 INFO L93 Difference]: Finished difference Result 30780 states and 155065 transitions. [2021-05-22 02:03:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:45,307 INFO L225 Difference]: With dead ends: 30780 [2021-05-22 02:03:45,308 INFO L226 Difference]: Without dead ends: 30021 [2021-05-22 02:03:45,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30021 states. [2021-05-22 02:03:46,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30021 to 13371. [2021-05-22 02:03:46,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.319745699326851) internal successors, (71125), 13370 states have internal predecessors, (71125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71125 transitions. [2021-05-22 02:03:46,598 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71125 transitions. Word has length 33 [2021-05-22 02:03:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:46,598 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71125 transitions. [2021-05-22 02:03:46,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71125 transitions. [2021-05-22 02:03:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:46,627 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:46,627 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, 1, 1, 1, 1] [2021-05-22 02:03:46,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-05-22 02:03:46,627 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:46,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:46,628 INFO L82 PathProgramCache]: Analyzing trace with hash 226896027, now seen corresponding path program 182 times [2021-05-22 02:03:46,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:46,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340854967] [2021-05-22 02:03:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:46,764 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 02:03:46,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:46,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340854967] [2021-05-22 02:03:46,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340854967] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:46,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:46,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:46,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743252236] [2021-05-22 02:03:46,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:46,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:46,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:46,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:46,765 INFO L87 Difference]: Start difference. First operand 13371 states and 71125 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:47,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:47,226 INFO L93 Difference]: Finished difference Result 30756 states and 154861 transitions. [2021-05-22 02:03:47,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:47,226 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:47,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:47,338 INFO L225 Difference]: With dead ends: 30756 [2021-05-22 02:03:47,338 INFO L226 Difference]: Without dead ends: 29909 [2021-05-22 02:03:47,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:48,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29909 states. [2021-05-22 02:03:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29909 to 13259. [2021-05-22 02:03:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13259 states, 13258 states have (on average 5.325463870870418) internal successors, (70605), 13258 states have internal predecessors, (70605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70605 transitions. [2021-05-22 02:03:48,435 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70605 transitions. Word has length 33 [2021-05-22 02:03:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:48,435 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70605 transitions. [2021-05-22 02:03:48,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70605 transitions. [2021-05-22 02:03:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:48,467 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:48,467 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, 1, 1, 1, 1] [2021-05-22 02:03:48,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-05-22 02:03:48,467 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:48,467 INFO L82 PathProgramCache]: Analyzing trace with hash -20021507, now seen corresponding path program 183 times [2021-05-22 02:03:48,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:48,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608398318] [2021-05-22 02:03:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:48,607 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 02:03:48,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:48,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608398318] [2021-05-22 02:03:48,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608398318] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:48,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:48,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:48,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314044485] [2021-05-22 02:03:48,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:48,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:48,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:48,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:48,609 INFO L87 Difference]: Start difference. First operand 13259 states and 70605 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:48,999 INFO L93 Difference]: Finished difference Result 30820 states and 155165 transitions. [2021-05-22 02:03:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:48,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:48,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:49,110 INFO L225 Difference]: With dead ends: 30820 [2021-05-22 02:03:49,111 INFO L226 Difference]: Without dead ends: 30061 [2021-05-22 02:03:49,111 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 169.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:49,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30061 states. [2021-05-22 02:03:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30061 to 13383. [2021-05-22 02:03:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13383 states, 13382 states have (on average 5.313779704080107) internal successors, (71109), 13382 states have internal predecessors, (71109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:50,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13383 states to 13383 states and 71109 transitions. [2021-05-22 02:03:50,419 INFO L78 Accepts]: Start accepts. Automaton has 13383 states and 71109 transitions. Word has length 33 [2021-05-22 02:03:50,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:50,419 INFO L482 AbstractCegarLoop]: Abstraction has 13383 states and 71109 transitions. [2021-05-22 02:03:50,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:50,419 INFO L276 IsEmpty]: Start isEmpty. Operand 13383 states and 71109 transitions. [2021-05-22 02:03:50,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:50,454 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:50,454 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:50,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-05-22 02:03:50,454 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:50,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:50,454 INFO L82 PathProgramCache]: Analyzing trace with hash 760064155, now seen corresponding path program 184 times [2021-05-22 02:03:50,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:50,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203494258] [2021-05-22 02:03:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:50,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:50,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203494258] [2021-05-22 02:03:50,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203494258] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:50,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:50,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:50,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709954845] [2021-05-22 02:03:50,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:50,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:50,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:50,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:50,598 INFO L87 Difference]: Start difference. First operand 13383 states and 71109 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:50,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:50,831 INFO L93 Difference]: Finished difference Result 30824 states and 155053 transitions. [2021-05-22 02:03:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:50,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:50,934 INFO L225 Difference]: With dead ends: 30824 [2021-05-22 02:03:50,935 INFO L226 Difference]: Without dead ends: 29937 [2021-05-22 02:03:50,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:51,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29937 states. [2021-05-22 02:03:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29937 to 13259. [2021-05-22 02:03:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13259 states, 13258 states have (on average 5.321240006034093) internal successors, (70549), 13258 states have internal predecessors, (70549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70549 transitions. [2021-05-22 02:03:52,204 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70549 transitions. Word has length 33 [2021-05-22 02:03:52,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:52,204 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70549 transitions. [2021-05-22 02:03:52,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:52,204 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70549 transitions. [2021-05-22 02:03:52,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:52,233 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:52,233 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, 1, 1, 1, 1] [2021-05-22 02:03:52,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-05-22 02:03:52,233 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:52,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1022984347, now seen corresponding path program 185 times [2021-05-22 02:03:52,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:52,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394110770] [2021-05-22 02:03:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:52,390 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 02:03:52,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:52,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394110770] [2021-05-22 02:03:52,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394110770] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:52,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:52,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:52,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027198832] [2021-05-22 02:03:52,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:52,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:52,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:52,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:52,391 INFO L87 Difference]: Start difference. First operand 13259 states and 70549 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:52,630 INFO L93 Difference]: Finished difference Result 30760 states and 154873 transitions. [2021-05-22 02:03:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:52,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:52,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:52,736 INFO L225 Difference]: With dead ends: 30760 [2021-05-22 02:03:52,736 INFO L226 Difference]: Without dead ends: 30025 [2021-05-22 02:03:52,737 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30025 states. [2021-05-22 02:03:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30025 to 13371. [2021-05-22 02:03:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.311368735976066) internal successors, (71013), 13370 states have internal predecessors, (71013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71013 transitions. [2021-05-22 02:03:54,010 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71013 transitions. Word has length 33 [2021-05-22 02:03:54,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:54,010 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71013 transitions. [2021-05-22 02:03:54,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:54,010 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71013 transitions. [2021-05-22 02:03:54,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:54,039 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:54,040 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:54,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-05-22 02:03:54,040 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:54,040 INFO L82 PathProgramCache]: Analyzing trace with hash -287596675, now seen corresponding path program 186 times [2021-05-22 02:03:54,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:54,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196790088] [2021-05-22 02:03:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:54,194 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 02:03:54,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:54,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196790088] [2021-05-22 02:03:54,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196790088] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:54,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:54,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:54,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261253596] [2021-05-22 02:03:54,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:54,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:54,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:54,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:54,195 INFO L87 Difference]: Start difference. First operand 13371 states and 71013 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:54,435 INFO L93 Difference]: Finished difference Result 30788 states and 154865 transitions. [2021-05-22 02:03:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:54,436 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:54,543 INFO L225 Difference]: With dead ends: 30788 [2021-05-22 02:03:54,544 INFO L226 Difference]: Without dead ends: 29857 [2021-05-22 02:03:54,544 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29857 states. [2021-05-22 02:03:55,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29857 to 13203. [2021-05-22 02:03:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13203 states, 13202 states have (on average 5.326238448719891) internal successors, (70317), 13202 states have internal predecessors, (70317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13203 states to 13203 states and 70317 transitions. [2021-05-22 02:03:55,802 INFO L78 Accepts]: Start accepts. Automaton has 13203 states and 70317 transitions. Word has length 33 [2021-05-22 02:03:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:55,802 INFO L482 AbstractCegarLoop]: Abstraction has 13203 states and 70317 transitions. [2021-05-22 02:03:55,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:55,802 INFO L276 IsEmpty]: Start isEmpty. Operand 13203 states and 70317 transitions. [2021-05-22 02:03:55,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:55,830 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:55,830 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, 1, 1, 1, 1] [2021-05-22 02:03:55,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-05-22 02:03:55,830 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:55,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:55,830 INFO L82 PathProgramCache]: Analyzing trace with hash -806901511, now seen corresponding path program 187 times [2021-05-22 02:03:55,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:55,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431127678] [2021-05-22 02:03:55,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:55,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:55,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431127678] [2021-05-22 02:03:55,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431127678] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:55,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:55,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:55,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633212031] [2021-05-22 02:03:55,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:55,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:55,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:55,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:55,965 INFO L87 Difference]: Start difference. First operand 13203 states and 70317 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:56,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:56,210 INFO L93 Difference]: Finished difference Result 30752 states and 154937 transitions. [2021-05-22 02:03:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:56,210 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:56,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:56,310 INFO L225 Difference]: With dead ends: 30752 [2021-05-22 02:03:56,310 INFO L226 Difference]: Without dead ends: 30001 [2021-05-22 02:03:56,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:57,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30001 states. [2021-05-22 02:03:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30001 to 13371. [2021-05-22 02:03:57,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.317651458489155) internal successors, (71097), 13370 states have internal predecessors, (71097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:57,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71097 transitions. [2021-05-22 02:03:57,657 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71097 transitions. Word has length 33 [2021-05-22 02:03:57,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:57,657 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71097 transitions. [2021-05-22 02:03:57,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71097 transitions. [2021-05-22 02:03:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:57,685 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:57,685 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, 1, 1, 1, 1] [2021-05-22 02:03:57,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-05-22 02:03:57,685 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:57,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:57,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1287803557, now seen corresponding path program 188 times [2021-05-22 02:03:57,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:57,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065399031] [2021-05-22 02:03:57,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:57,860 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 02:03:57,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:57,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065399031] [2021-05-22 02:03:57,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065399031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:57,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:57,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:57,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141998565] [2021-05-22 02:03:57,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:57,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:57,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:57,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:57,861 INFO L87 Difference]: Start difference. First operand 13371 states and 71097 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:58,110 INFO L93 Difference]: Finished difference Result 30736 states and 154761 transitions. [2021-05-22 02:03:58,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:03:58,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:03:58,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:58,456 INFO L225 Difference]: With dead ends: 30736 [2021-05-22 02:03:58,456 INFO L226 Difference]: Without dead ends: 29889 [2021-05-22 02:03:58,456 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 186.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:03:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29889 states. [2021-05-22 02:03:59,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29889 to 13259. [2021-05-22 02:03:59,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13259 states, 13258 states have (on average 5.323351938452255) internal successors, (70577), 13258 states have internal predecessors, (70577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70577 transitions. [2021-05-22 02:03:59,490 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70577 transitions. Word has length 33 [2021-05-22 02:03:59,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:59,490 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70577 transitions. [2021-05-22 02:03:59,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:59,490 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70577 transitions. [2021-05-22 02:03:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:03:59,518 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:59,518 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, 1, 1, 1, 1] [2021-05-22 02:03:59,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-05-22 02:03:59,518 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:59,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:59,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1849845925, now seen corresponding path program 189 times [2021-05-22 02:03:59,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:59,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719643084] [2021-05-22 02:03:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:59,652 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 02:03:59,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:59,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719643084] [2021-05-22 02:03:59,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719643084] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:59,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:59,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:03:59,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129397517] [2021-05-22 02:03:59,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:03:59,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:59,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:03:59,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:59,653 INFO L87 Difference]: Start difference. First operand 13259 states and 70577 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:00,057 INFO L93 Difference]: Finished difference Result 30788 states and 155021 transitions. [2021-05-22 02:04:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:00,057 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:00,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:00,161 INFO L225 Difference]: With dead ends: 30788 [2021-05-22 02:04:00,161 INFO L226 Difference]: Without dead ends: 30037 [2021-05-22 02:04:00,162 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30037 states. [2021-05-22 02:04:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30037 to 13379. [2021-05-22 02:04:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 5.312378531918075) internal successors, (71069), 13378 states have internal predecessors, (71069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71069 transitions. [2021-05-22 02:04:01,210 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71069 transitions. Word has length 33 [2021-05-22 02:04:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:01,210 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71069 transitions. [2021-05-22 02:04:01,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71069 transitions. [2021-05-22 02:04:01,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:01,402 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:01,402 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, 1, 1, 1, 1] [2021-05-22 02:04:01,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-05-22 02:04:01,402 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:01,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:01,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1536798885, now seen corresponding path program 190 times [2021-05-22 02:04:01,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:01,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079466190] [2021-05-22 02:04:01,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:01,537 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 02:04:01,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:01,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079466190] [2021-05-22 02:04:01,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079466190] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:01,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:01,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:01,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837398819] [2021-05-22 02:04:01,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:01,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:01,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:01,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:01,538 INFO L87 Difference]: Start difference. First operand 13379 states and 71069 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:01,780 INFO L93 Difference]: Finished difference Result 30800 states and 154941 transitions. [2021-05-22 02:04:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:01,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:01,881 INFO L225 Difference]: With dead ends: 30800 [2021-05-22 02:04:01,881 INFO L226 Difference]: Without dead ends: 29917 [2021-05-22 02:04:01,881 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29917 states. [2021-05-22 02:04:03,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29917 to 13259. [2021-05-22 02:04:03,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13259 states, 13258 states have (on average 5.31912807361593) internal successors, (70521), 13258 states have internal predecessors, (70521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70521 transitions. [2021-05-22 02:04:03,093 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70521 transitions. Word has length 33 [2021-05-22 02:04:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:03,093 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70521 transitions. [2021-05-22 02:04:03,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70521 transitions. [2021-05-22 02:04:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:03,120 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:03,120 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, 1, 1, 1, 1] [2021-05-22 02:04:03,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-05-22 02:04:03,120 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:03,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:03,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1655735101, now seen corresponding path program 191 times [2021-05-22 02:04:03,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:03,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60217342] [2021-05-22 02:04:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:03,294 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 02:04:03,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:03,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60217342] [2021-05-22 02:04:03,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60217342] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:03,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:03,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:03,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290347290] [2021-05-22 02:04:03,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:03,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:03,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:03,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:03,295 INFO L87 Difference]: Start difference. First operand 13259 states and 70521 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:03,556 INFO L93 Difference]: Finished difference Result 30748 states and 154801 transitions. [2021-05-22 02:04:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:03,557 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:03,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:03,658 INFO L225 Difference]: With dead ends: 30748 [2021-05-22 02:04:03,658 INFO L226 Difference]: Without dead ends: 30013 [2021-05-22 02:04:03,658 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 194.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:04,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30013 states. [2021-05-22 02:04:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30013 to 13371. [2021-05-22 02:04:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.30927449513837) internal successors, (70985), 13370 states have internal predecessors, (70985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 70985 transitions. [2021-05-22 02:04:04,873 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 70985 transitions. Word has length 33 [2021-05-22 02:04:04,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:04,873 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 70985 transitions. [2021-05-22 02:04:04,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:04,873 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 70985 transitions. [2021-05-22 02:04:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:04,900 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:04,900 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, 1, 1, 1, 1] [2021-05-22 02:04:04,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-05-22 02:04:04,900 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:04,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:04,900 INFO L82 PathProgramCache]: Analyzing trace with hash -317570917, now seen corresponding path program 192 times [2021-05-22 02:04:04,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:04,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529175893] [2021-05-22 02:04:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:05,057 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 02:04:05,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:05,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529175893] [2021-05-22 02:04:05,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529175893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:05,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:05,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:05,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545709572] [2021-05-22 02:04:05,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:05,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:05,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:05,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:05,058 INFO L87 Difference]: Start difference. First operand 13371 states and 70985 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:05,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:05,277 INFO L93 Difference]: Finished difference Result 30776 states and 154793 transitions. [2021-05-22 02:04:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:05,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:05,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:05,376 INFO L225 Difference]: With dead ends: 30776 [2021-05-22 02:04:05,376 INFO L226 Difference]: Without dead ends: 29817 [2021-05-22 02:04:05,376 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29817 states. [2021-05-22 02:04:06,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29817 to 13175. [2021-05-22 02:04:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13175 states, 13174 states have (on average 5.329816304842872) internal successors, (70215), 13174 states have internal predecessors, (70215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13175 states to 13175 states and 70215 transitions. [2021-05-22 02:04:06,639 INFO L78 Accepts]: Start accepts. Automaton has 13175 states and 70215 transitions. Word has length 33 [2021-05-22 02:04:06,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:06,639 INFO L482 AbstractCegarLoop]: Abstraction has 13175 states and 70215 transitions. [2021-05-22 02:04:06,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand 13175 states and 70215 transitions. [2021-05-22 02:04:06,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:06,666 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:06,666 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, 1, 1, 1, 1] [2021-05-22 02:04:06,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-05-22 02:04:06,667 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:06,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1430152825, now seen corresponding path program 193 times [2021-05-22 02:04:06,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:06,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714540307] [2021-05-22 02:04:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:06,869 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 02:04:06,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:06,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714540307] [2021-05-22 02:04:06,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714540307] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:06,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:06,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:06,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091094266] [2021-05-22 02:04:06,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:06,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:06,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:06,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:06,870 INFO L87 Difference]: Start difference. First operand 13175 states and 70215 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:07,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:07,103 INFO L93 Difference]: Finished difference Result 31530 states and 158761 transitions. [2021-05-22 02:04:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:07,104 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:07,206 INFO L225 Difference]: With dead ends: 31530 [2021-05-22 02:04:07,207 INFO L226 Difference]: Without dead ends: 30771 [2021-05-22 02:04:07,207 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 216.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:08,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30771 states. [2021-05-22 02:04:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30771 to 13419. [2021-05-22 02:04:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13419 states, 13418 states have (on average 5.324116857952005) internal successors, (71439), 13418 states have internal predecessors, (71439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71439 transitions. [2021-05-22 02:04:08,490 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71439 transitions. Word has length 33 [2021-05-22 02:04:08,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:08,490 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71439 transitions. [2021-05-22 02:04:08,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71439 transitions. [2021-05-22 02:04:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:08,518 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:08,519 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, 1, 1, 1, 1] [2021-05-22 02:04:08,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-05-22 02:04:08,519 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:08,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:08,519 INFO L82 PathProgramCache]: Analyzing trace with hash 634125945, now seen corresponding path program 194 times [2021-05-22 02:04:08,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:08,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786428069] [2021-05-22 02:04:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:08,664 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 02:04:08,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:08,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786428069] [2021-05-22 02:04:08,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786428069] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:08,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:08,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:08,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555398465] [2021-05-22 02:04:08,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:08,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:08,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:08,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:08,665 INFO L87 Difference]: Start difference. First operand 13419 states and 71439 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:08,897 INFO L93 Difference]: Finished difference Result 31506 states and 158557 transitions. [2021-05-22 02:04:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:09,002 INFO L225 Difference]: With dead ends: 31506 [2021-05-22 02:04:09,002 INFO L226 Difference]: Without dead ends: 30659 [2021-05-22 02:04:09,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:09,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30659 states. [2021-05-22 02:04:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30659 to 13307. [2021-05-22 02:04:10,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.329851194949647) internal successors, (70919), 13306 states have internal predecessors, (70919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70919 transitions. [2021-05-22 02:04:10,277 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70919 transitions. Word has length 33 [2021-05-22 02:04:10,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:10,278 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70919 transitions. [2021-05-22 02:04:10,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:10,278 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70919 transitions. [2021-05-22 02:04:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:10,305 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:10,306 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:10,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-05-22 02:04:10,306 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:10,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:10,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1004176859, now seen corresponding path program 195 times [2021-05-22 02:04:10,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:10,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459507243] [2021-05-22 02:04:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:10,474 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 02:04:10,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:10,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459507243] [2021-05-22 02:04:10,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459507243] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:10,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:10,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:10,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109117314] [2021-05-22 02:04:10,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:10,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:10,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:10,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:10,475 INFO L87 Difference]: Start difference. First operand 13307 states and 70919 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:10,862 INFO L93 Difference]: Finished difference Result 31765 states and 159764 transitions. [2021-05-22 02:04:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:10,863 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:10,968 INFO L225 Difference]: With dead ends: 31765 [2021-05-22 02:04:10,968 INFO L226 Difference]: Without dead ends: 31006 [2021-05-22 02:04:10,968 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 191.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31006 states. [2021-05-22 02:04:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31006 to 13495. [2021-05-22 02:04:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13495 states, 13494 states have (on average 5.3166592559656145) internal successors, (71743), 13494 states have internal predecessors, (71743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:12,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 71743 transitions. [2021-05-22 02:04:12,035 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 71743 transitions. Word has length 33 [2021-05-22 02:04:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:12,036 INFO L482 AbstractCegarLoop]: Abstraction has 13495 states and 71743 transitions. [2021-05-22 02:04:12,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 71743 transitions. [2021-05-22 02:04:12,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:12,063 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:12,063 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:12,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-05-22 02:04:12,063 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:12,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:12,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1433878137, now seen corresponding path program 196 times [2021-05-22 02:04:12,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:12,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684266776] [2021-05-22 02:04:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:12,366 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 02:04:12,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:12,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684266776] [2021-05-22 02:04:12,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684266776] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:12,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:12,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:12,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955486922] [2021-05-22 02:04:12,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:12,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:12,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:12,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:12,367 INFO L87 Difference]: Start difference. First operand 13495 states and 71743 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:12,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:12,581 INFO L93 Difference]: Finished difference Result 31900 states and 160235 transitions. [2021-05-22 02:04:12,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:12,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:12,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:12,679 INFO L225 Difference]: With dead ends: 31900 [2021-05-22 02:04:12,679 INFO L226 Difference]: Without dead ends: 30818 [2021-05-22 02:04:12,680 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 171.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:13,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30818 states. [2021-05-22 02:04:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30818 to 13307. [2021-05-22 02:04:13,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.32323763715617) internal successors, (70831), 13306 states have internal predecessors, (70831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:13,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70831 transitions. [2021-05-22 02:04:13,899 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70831 transitions. Word has length 33 [2021-05-22 02:04:13,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:13,899 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70831 transitions. [2021-05-22 02:04:13,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70831 transitions. [2021-05-22 02:04:13,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:13,926 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:13,926 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, 1, 1, 1, 1] [2021-05-22 02:04:13,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-05-22 02:04:13,926 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:13,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:13,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2067084921, now seen corresponding path program 197 times [2021-05-22 02:04:13,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:13,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719902227] [2021-05-22 02:04:13,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:14,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:14,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:14,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719902227] [2021-05-22 02:04:14,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719902227] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:14,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:14,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:14,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59173100] [2021-05-22 02:04:14,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:14,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:14,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:14,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:14,083 INFO L87 Difference]: Start difference. First operand 13307 states and 70831 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:14,309 INFO L93 Difference]: Finished difference Result 31705 states and 159440 transitions. [2021-05-22 02:04:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:14,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:14,412 INFO L225 Difference]: With dead ends: 31705 [2021-05-22 02:04:14,412 INFO L226 Difference]: Without dead ends: 30970 [2021-05-22 02:04:14,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 182.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:15,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30970 states. [2021-05-22 02:04:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30970 to 13483. [2021-05-22 02:04:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13483 states, 13482 states have (on average 5.311897344607625) internal successors, (71615), 13482 states have internal predecessors, (71615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:15,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71615 transitions. [2021-05-22 02:04:15,626 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71615 transitions. Word has length 33 [2021-05-22 02:04:15,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:15,626 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71615 transitions. [2021-05-22 02:04:15,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:15,626 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71615 transitions. [2021-05-22 02:04:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:15,653 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:15,653 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, 1, 1, 1, 1] [2021-05-22 02:04:15,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-05-22 02:04:15,653 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:15,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:15,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2142619227, now seen corresponding path program 198 times [2021-05-22 02:04:15,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:15,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214479449] [2021-05-22 02:04:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:15,813 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 02:04:15,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:15,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214479449] [2021-05-22 02:04:15,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214479449] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:15,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:15,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:15,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844163390] [2021-05-22 02:04:15,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:15,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:15,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:15,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:15,814 INFO L87 Difference]: Start difference. First operand 13483 states and 71615 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:16,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:16,036 INFO L93 Difference]: Finished difference Result 31864 states and 160015 transitions. [2021-05-22 02:04:16,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:16,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:16,138 INFO L225 Difference]: With dead ends: 31864 [2021-05-22 02:04:16,138 INFO L226 Difference]: Without dead ends: 30706 [2021-05-22 02:04:16,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:17,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30706 states. [2021-05-22 02:04:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30706 to 13219. [2021-05-22 02:04:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 13218 states have (on average 5.329021031926161) internal successors, (70439), 13218 states have internal predecessors, (70439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70439 transitions. [2021-05-22 02:04:17,387 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70439 transitions. Word has length 33 [2021-05-22 02:04:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:17,387 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70439 transitions. [2021-05-22 02:04:17,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70439 transitions. [2021-05-22 02:04:17,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:17,414 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:17,414 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, 1, 1, 1, 1] [2021-05-22 02:04:17,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-05-22 02:04:17,414 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:17,414 INFO L82 PathProgramCache]: Analyzing trace with hash -715624101, now seen corresponding path program 199 times [2021-05-22 02:04:17,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:17,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170686483] [2021-05-22 02:04:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:17,549 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 02:04:17,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:17,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170686483] [2021-05-22 02:04:17,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170686483] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:17,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:17,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:17,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116396458] [2021-05-22 02:04:17,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:17,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:17,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:17,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:17,550 INFO L87 Difference]: Start difference. First operand 13219 states and 70439 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:17,769 INFO L93 Difference]: Finished difference Result 31239 states and 157318 transitions. [2021-05-22 02:04:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:17,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:17,868 INFO L225 Difference]: With dead ends: 31239 [2021-05-22 02:04:17,869 INFO L226 Difference]: Without dead ends: 30480 [2021-05-22 02:04:17,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:18,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30480 states. [2021-05-22 02:04:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30480 to 13387. [2021-05-22 02:04:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13387 states, 13386 states have (on average 5.320409382937397) internal successors, (71219), 13386 states have internal predecessors, (71219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71219 transitions. [2021-05-22 02:04:19,133 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71219 transitions. Word has length 33 [2021-05-22 02:04:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:19,133 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71219 transitions. [2021-05-22 02:04:19,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71219 transitions. [2021-05-22 02:04:19,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:19,163 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:19,163 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, 1, 1, 1, 1] [2021-05-22 02:04:19,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-05-22 02:04:19,163 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:19,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:19,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1511650981, now seen corresponding path program 200 times [2021-05-22 02:04:19,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:19,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121852399] [2021-05-22 02:04:19,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:19,295 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 02:04:19,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:19,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121852399] [2021-05-22 02:04:19,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121852399] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:19,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:19,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:19,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599605689] [2021-05-22 02:04:19,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:19,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:19,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:19,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:19,296 INFO L87 Difference]: Start difference. First operand 13387 states and 71219 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:19,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:19,549 INFO L93 Difference]: Finished difference Result 31215 states and 157114 transitions. [2021-05-22 02:04:19,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:19,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:19,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:19,893 INFO L225 Difference]: With dead ends: 31215 [2021-05-22 02:04:19,893 INFO L226 Difference]: Without dead ends: 30368 [2021-05-22 02:04:19,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 159.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30368 states. [2021-05-22 02:04:20,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30368 to 13275. [2021-05-22 02:04:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13275 states, 13274 states have (on average 5.3261262618653005) internal successors, (70699), 13274 states have internal predecessors, (70699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70699 transitions. [2021-05-22 02:04:20,948 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70699 transitions. Word has length 33 [2021-05-22 02:04:20,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:20,948 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70699 transitions. [2021-05-22 02:04:20,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70699 transitions. [2021-05-22 02:04:20,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:20,976 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:20,976 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, 1, 1, 1, 1] [2021-05-22 02:04:20,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-05-22 02:04:20,976 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:20,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:20,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1760135973, now seen corresponding path program 201 times [2021-05-22 02:04:20,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:20,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768012846] [2021-05-22 02:04:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:21,120 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 02:04:21,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:21,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768012846] [2021-05-22 02:04:21,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768012846] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:21,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:21,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:21,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507590023] [2021-05-22 02:04:21,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:21,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:21,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:21,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:21,121 INFO L87 Difference]: Start difference. First operand 13275 states and 70699 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:21,598 INFO L93 Difference]: Finished difference Result 31279 states and 157418 transitions. [2021-05-22 02:04:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:21,598 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:21,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:21,704 INFO L225 Difference]: With dead ends: 31279 [2021-05-22 02:04:21,704 INFO L226 Difference]: Without dead ends: 30520 [2021-05-22 02:04:21,704 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30520 states. [2021-05-22 02:04:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30520 to 13399. [2021-05-22 02:04:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13399 states, 13398 states have (on average 5.314449917898194) internal successors, (71203), 13398 states have internal predecessors, (71203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:22,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13399 states to 13399 states and 71203 transitions. [2021-05-22 02:04:22,780 INFO L78 Accepts]: Start accepts. Automaton has 13399 states and 71203 transitions. Word has length 33 [2021-05-22 02:04:22,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:22,780 INFO L482 AbstractCegarLoop]: Abstraction has 13399 states and 71203 transitions. [2021-05-22 02:04:22,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 13399 states and 71203 transitions. [2021-05-22 02:04:22,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:22,808 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:22,808 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, 1, 1, 1, 1] [2021-05-22 02:04:22,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-05-22 02:04:22,808 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:22,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:22,808 INFO L82 PathProgramCache]: Analyzing trace with hash -980050311, now seen corresponding path program 202 times [2021-05-22 02:04:22,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:22,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799895286] [2021-05-22 02:04:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:22,986 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-22 02:04:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:23,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:23,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799895286] [2021-05-22 02:04:23,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799895286] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:23,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:23,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:23,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361547965] [2021-05-22 02:04:23,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:23,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:23,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:23,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:23,103 INFO L87 Difference]: Start difference. First operand 13399 states and 71203 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:23,338 INFO L93 Difference]: Finished difference Result 31283 states and 157306 transitions. [2021-05-22 02:04:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:23,338 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:23,440 INFO L225 Difference]: With dead ends: 31283 [2021-05-22 02:04:23,440 INFO L226 Difference]: Without dead ends: 30396 [2021-05-22 02:04:23,440 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 321.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30396 states. [2021-05-22 02:04:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30396 to 13275. [2021-05-22 02:04:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13275 states, 13274 states have (on average 5.3219074883230375) internal successors, (70643), 13274 states have internal predecessors, (70643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70643 transitions. [2021-05-22 02:04:24,710 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70643 transitions. Word has length 33 [2021-05-22 02:04:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:24,711 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70643 transitions. [2021-05-22 02:04:24,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70643 transitions. [2021-05-22 02:04:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:24,739 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:24,739 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, 1, 1, 1, 1] [2021-05-22 02:04:24,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-05-22 02:04:24,739 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:24,739 INFO L82 PathProgramCache]: Analyzing trace with hash -717130119, now seen corresponding path program 203 times [2021-05-22 02:04:24,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:24,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219162405] [2021-05-22 02:04:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:24,889 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 02:04:24,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:24,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219162405] [2021-05-22 02:04:24,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219162405] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:24,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:24,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:24,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064141805] [2021-05-22 02:04:24,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:24,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:24,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:24,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:24,890 INFO L87 Difference]: Start difference. First operand 13275 states and 70643 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:25,121 INFO L93 Difference]: Finished difference Result 31219 states and 157126 transitions. [2021-05-22 02:04:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:25,121 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:25,228 INFO L225 Difference]: With dead ends: 31219 [2021-05-22 02:04:25,228 INFO L226 Difference]: Without dead ends: 30484 [2021-05-22 02:04:25,228 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30484 states. [2021-05-22 02:04:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30484 to 13387. [2021-05-22 02:04:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13387 states, 13386 states have (on average 5.312042432392051) internal successors, (71107), 13386 states have internal predecessors, (71107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71107 transitions. [2021-05-22 02:04:26,475 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71107 transitions. Word has length 33 [2021-05-22 02:04:26,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:26,475 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71107 transitions. [2021-05-22 02:04:26,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71107 transitions. [2021-05-22 02:04:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:26,503 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:26,503 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, 1, 1, 1, 1] [2021-05-22 02:04:26,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-05-22 02:04:26,503 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:26,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:26,503 INFO L82 PathProgramCache]: Analyzing trace with hash -2027711141, now seen corresponding path program 204 times [2021-05-22 02:04:26,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:26,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095706466] [2021-05-22 02:04:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:26,679 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 02:04:26,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:26,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095706466] [2021-05-22 02:04:26,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095706466] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:26,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:26,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:26,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723892056] [2021-05-22 02:04:26,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:26,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:26,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:26,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:26,681 INFO L87 Difference]: Start difference. First operand 13387 states and 71107 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:26,966 INFO L93 Difference]: Finished difference Result 31247 states and 157118 transitions. [2021-05-22 02:04:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:26,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:27,068 INFO L225 Difference]: With dead ends: 31247 [2021-05-22 02:04:27,068 INFO L226 Difference]: Without dead ends: 30316 [2021-05-22 02:04:27,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 207.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30316 states. [2021-05-22 02:04:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30316 to 13219. [2021-05-22 02:04:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 13218 states have (on average 5.326902708427902) internal successors, (70411), 13218 states have internal predecessors, (70411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70411 transitions. [2021-05-22 02:04:28,432 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70411 transitions. Word has length 33 [2021-05-22 02:04:28,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:28,432 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70411 transitions. [2021-05-22 02:04:28,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:28,432 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70411 transitions. [2021-05-22 02:04:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:28,460 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:28,460 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, 1, 1, 1, 1] [2021-05-22 02:04:28,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-05-22 02:04:28,461 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:28,461 INFO L82 PathProgramCache]: Analyzing trace with hash -538025027, now seen corresponding path program 205 times [2021-05-22 02:04:28,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:28,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677874257] [2021-05-22 02:04:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:28,623 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 02:04:28,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:28,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677874257] [2021-05-22 02:04:28,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677874257] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:28,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:28,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:28,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465173997] [2021-05-22 02:04:28,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:28,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:28,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:28,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:28,624 INFO L87 Difference]: Start difference. First operand 13219 states and 70411 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:28,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:28,876 INFO L93 Difference]: Finished difference Result 31825 states and 159992 transitions. [2021-05-22 02:04:28,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:28,876 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:28,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:28,984 INFO L225 Difference]: With dead ends: 31825 [2021-05-22 02:04:28,984 INFO L226 Difference]: Without dead ends: 31066 [2021-05-22 02:04:28,984 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 184.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31066 states. [2021-05-22 02:04:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31066 to 13501. [2021-05-22 02:04:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13501 states, 13500 states have (on average 5.31525925925926) internal successors, (71756), 13500 states have internal predecessors, (71756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13501 states to 13501 states and 71756 transitions. [2021-05-22 02:04:30,311 INFO L78 Accepts]: Start accepts. Automaton has 13501 states and 71756 transitions. Word has length 33 [2021-05-22 02:04:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:30,311 INFO L482 AbstractCegarLoop]: Abstraction has 13501 states and 71756 transitions. [2021-05-22 02:04:30,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:30,311 INFO L276 IsEmpty]: Start isEmpty. Operand 13501 states and 71756 transitions. [2021-05-22 02:04:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [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, 1, 1, 1, 1] [2021-05-22 02:04:30,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-05-22 02:04:30,340 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:30,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:30,341 INFO L82 PathProgramCache]: Analyzing trace with hash -108323749, now seen corresponding path program 206 times [2021-05-22 02:04:30,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:30,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691923378] [2021-05-22 02:04:30,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:30,496 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 02:04:30,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:30,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691923378] [2021-05-22 02:04:30,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691923378] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:30,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:30,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:30,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139995252] [2021-05-22 02:04:30,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:30,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:30,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:30,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:30,497 INFO L87 Difference]: Start difference. First operand 13501 states and 71756 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:30,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:30,710 INFO L93 Difference]: Finished difference Result 31960 states and 160463 transitions. [2021-05-22 02:04:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:30,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:30,816 INFO L225 Difference]: With dead ends: 31960 [2021-05-22 02:04:30,816 INFO L226 Difference]: Without dead ends: 30878 [2021-05-22 02:04:30,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30878 states. [2021-05-22 02:04:32,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30878 to 13313. [2021-05-22 02:04:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13313 states, 13312 states have (on average 5.3213641826923075) internal successors, (70838), 13312 states have internal predecessors, (70838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:32,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70838 transitions. [2021-05-22 02:04:32,477 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70838 transitions. Word has length 33 [2021-05-22 02:04:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:32,478 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70838 transitions. [2021-05-22 02:04:32,478 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70838 transitions. [2021-05-22 02:04:32,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:32,506 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:32,507 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, 1, 1, 1, 1] [2021-05-22 02:04:32,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-05-22 02:04:32,507 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:32,507 INFO L82 PathProgramCache]: Analyzing trace with hash -53054309, now seen corresponding path program 207 times [2021-05-22 02:04:32,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:32,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786774524] [2021-05-22 02:04:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:32,647 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 02:04:32,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:32,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786774524] [2021-05-22 02:04:32,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786774524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:32,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:32,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:32,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643804789] [2021-05-22 02:04:32,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:32,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:32,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:32,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:32,648 INFO L87 Difference]: Start difference. First operand 13313 states and 70838 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:33,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:33,086 INFO L93 Difference]: Finished difference Result 31630 states and 158995 transitions. [2021-05-22 02:04:33,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:33,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:33,197 INFO L225 Difference]: With dead ends: 31630 [2021-05-22 02:04:33,197 INFO L226 Difference]: Without dead ends: 30871 [2021-05-22 02:04:33,197 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30871 states. [2021-05-22 02:04:34,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30871 to 13437. [2021-05-22 02:04:34,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13437 states, 13436 states have (on average 5.309764810955642) internal successors, (71342), 13436 states have internal predecessors, (71342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13437 states to 13437 states and 71342 transitions. [2021-05-22 02:04:34,300 INFO L78 Accepts]: Start accepts. Automaton has 13437 states and 71342 transitions. Word has length 33 [2021-05-22 02:04:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:34,300 INFO L482 AbstractCegarLoop]: Abstraction has 13437 states and 71342 transitions. [2021-05-22 02:04:34,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 13437 states and 71342 transitions. [2021-05-22 02:04:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:34,330 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:34,330 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, 1, 1, 1, 1] [2021-05-22 02:04:34,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-05-22 02:04:34,330 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:34,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:34,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1973906779, now seen corresponding path program 208 times [2021-05-22 02:04:34,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:34,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122333051] [2021-05-22 02:04:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:34,542 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-05-22 02:04:34,641 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 02:04:34,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:34,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122333051] [2021-05-22 02:04:34,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122333051] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:34,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:34,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:34,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387208718] [2021-05-22 02:04:34,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:34,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:34,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:34,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:34,642 INFO L87 Difference]: Start difference. First operand 13437 states and 71342 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:34,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:34,914 INFO L93 Difference]: Finished difference Result 31634 states and 158883 transitions. [2021-05-22 02:04:34,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:34,914 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:34,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:35,024 INFO L225 Difference]: With dead ends: 31634 [2021-05-22 02:04:35,024 INFO L226 Difference]: Without dead ends: 30747 [2021-05-22 02:04:35,024 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 333.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:35,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30747 states. [2021-05-22 02:04:36,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30747 to 13313. [2021-05-22 02:04:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13313 states, 13312 states have (on average 5.316706730769231) internal successors, (70776), 13312 states have internal predecessors, (70776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70776 transitions. [2021-05-22 02:04:36,322 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70776 transitions. Word has length 33 [2021-05-22 02:04:36,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:36,322 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70776 transitions. [2021-05-22 02:04:36,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:36,322 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70776 transitions. [2021-05-22 02:04:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:36,351 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:36,351 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, 1, 1, 1, 1] [2021-05-22 02:04:36,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-05-22 02:04:36,351 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:36,352 INFO L82 PathProgramCache]: Analyzing trace with hash -2065279367, now seen corresponding path program 209 times [2021-05-22 02:04:36,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:36,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670602322] [2021-05-22 02:04:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:36,489 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 02:04:36,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:36,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670602322] [2021-05-22 02:04:36,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670602322] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:36,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:36,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:36,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251293382] [2021-05-22 02:04:36,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:36,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:36,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:36,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:36,490 INFO L87 Difference]: Start difference. First operand 13313 states and 70776 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:36,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:36,734 INFO L93 Difference]: Finished difference Result 31966 states and 160450 transitions. [2021-05-22 02:04:36,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:36,734 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:36,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:36,839 INFO L225 Difference]: With dead ends: 31966 [2021-05-22 02:04:36,839 INFO L226 Difference]: Without dead ends: 31072 [2021-05-22 02:04:36,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 144.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:37,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31072 states. [2021-05-22 02:04:38,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31072 to 13503. [2021-05-22 02:04:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13503 states, 13502 states have (on average 5.298548363205451) internal successors, (71541), 13502 states have internal predecessors, (71541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71541 transitions. [2021-05-22 02:04:38,087 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71541 transitions. Word has length 33 [2021-05-22 02:04:38,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:38,087 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71541 transitions. [2021-05-22 02:04:38,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71541 transitions. [2021-05-22 02:04:38,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:38,115 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:38,115 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, 1, 1, 1, 1] [2021-05-22 02:04:38,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-05-22 02:04:38,115 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:38,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:38,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1055728219, now seen corresponding path program 210 times [2021-05-22 02:04:38,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:38,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848676411] [2021-05-22 02:04:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:38,251 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 02:04:38,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:38,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848676411] [2021-05-22 02:04:38,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848676411] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:38,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:38,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:38,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601047198] [2021-05-22 02:04:38,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:38,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:38,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:38,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:38,252 INFO L87 Difference]: Start difference. First operand 13503 states and 71541 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:38,490 INFO L93 Difference]: Finished difference Result 31835 states and 159677 transitions. [2021-05-22 02:04:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:38,490 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:38,592 INFO L225 Difference]: With dead ends: 31835 [2021-05-22 02:04:38,592 INFO L226 Difference]: Without dead ends: 30788 [2021-05-22 02:04:38,592 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:39,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30788 states. [2021-05-22 02:04:39,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30788 to 13219. [2021-05-22 02:04:39,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 13218 states have (on average 5.323573914359208) internal successors, (70367), 13218 states have internal predecessors, (70367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:39,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70367 transitions. [2021-05-22 02:04:39,859 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70367 transitions. Word has length 33 [2021-05-22 02:04:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:39,859 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70367 transitions. [2021-05-22 02:04:39,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:39,859 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70367 transitions. [2021-05-22 02:04:39,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:39,885 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:39,885 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, 1, 1, 1, 1] [2021-05-22 02:04:39,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-05-22 02:04:39,886 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:39,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:39,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1691185543, now seen corresponding path program 211 times [2021-05-22 02:04:39,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:39,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163347164] [2021-05-22 02:04:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:40,042 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 02:04:40,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:40,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163347164] [2021-05-22 02:04:40,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163347164] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:40,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:40,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:40,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399276337] [2021-05-22 02:04:40,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:40,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:40,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:40,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:40,043 INFO L87 Difference]: Start difference. First operand 13219 states and 70367 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:40,266 INFO L93 Difference]: Finished difference Result 31711 states and 159487 transitions. [2021-05-22 02:04:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:40,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:40,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:40,368 INFO L225 Difference]: With dead ends: 31711 [2021-05-22 02:04:40,368 INFO L226 Difference]: Without dead ends: 30976 [2021-05-22 02:04:40,368 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 183.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30976 states. [2021-05-22 02:04:41,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30976 to 13483. [2021-05-22 02:04:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13483 states, 13482 states have (on average 5.313974187805964) internal successors, (71643), 13482 states have internal predecessors, (71643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71643 transitions. [2021-05-22 02:04:41,622 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71643 transitions. Word has length 33 [2021-05-22 02:04:41,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:41,622 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71643 transitions. [2021-05-22 02:04:41,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:41,622 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71643 transitions. [2021-05-22 02:04:41,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:41,649 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:41,649 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, 1, 1, 1, 1] [2021-05-22 02:04:41,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-05-22 02:04:41,649 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:41,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:41,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1615651237, now seen corresponding path program 212 times [2021-05-22 02:04:41,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:41,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957316380] [2021-05-22 02:04:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:41,812 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 02:04:41,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:41,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957316380] [2021-05-22 02:04:41,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957316380] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:41,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:41,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:41,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501552824] [2021-05-22 02:04:41,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:41,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:41,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:41,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:41,813 INFO L87 Difference]: Start difference. First operand 13483 states and 71643 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:42,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:42,021 INFO L93 Difference]: Finished difference Result 31870 states and 160062 transitions. [2021-05-22 02:04:42,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:42,022 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:42,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:42,123 INFO L225 Difference]: With dead ends: 31870 [2021-05-22 02:04:42,123 INFO L226 Difference]: Without dead ends: 30800 [2021-05-22 02:04:42,123 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:43,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30800 states. [2021-05-22 02:04:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30800 to 13307. [2021-05-22 02:04:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.318728393206072) internal successors, (70771), 13306 states have internal predecessors, (70771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70771 transitions. [2021-05-22 02:04:43,421 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70771 transitions. Word has length 33 [2021-05-22 02:04:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:43,421 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70771 transitions. [2021-05-22 02:04:43,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:43,421 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70771 transitions. [2021-05-22 02:04:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:43,450 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:43,450 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, 1, 1, 1, 1] [2021-05-22 02:04:43,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-05-22 02:04:43,450 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:43,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:43,450 INFO L82 PathProgramCache]: Analyzing trace with hash -290068005, now seen corresponding path program 213 times [2021-05-22 02:04:43,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:43,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599764671] [2021-05-22 02:04:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:43,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:43,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599764671] [2021-05-22 02:04:43,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599764671] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:43,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:43,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:43,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732033808] [2021-05-22 02:04:43,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:43,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:43,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:43,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:43,620 INFO L87 Difference]: Start difference. First operand 13307 states and 70771 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:44,021 INFO L93 Difference]: Finished difference Result 31516 states and 158496 transitions. [2021-05-22 02:04:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:44,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:44,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:44,125 INFO L225 Difference]: With dead ends: 31516 [2021-05-22 02:04:44,125 INFO L226 Difference]: Without dead ends: 30781 [2021-05-22 02:04:44,125 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 191.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:44,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30781 states. [2021-05-22 02:04:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30781 to 13419. [2021-05-22 02:04:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13419 states, 13418 states have (on average 5.308913399910568) internal successors, (71235), 13418 states have internal predecessors, (71235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:45,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71235 transitions. [2021-05-22 02:04:45,204 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71235 transitions. Word has length 33 [2021-05-22 02:04:45,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:45,204 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71235 transitions. [2021-05-22 02:04:45,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:45,204 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71235 transitions. [2021-05-22 02:04:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:45,232 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:45,232 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, 1, 1, 1, 1] [2021-05-22 02:04:45,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-05-22 02:04:45,232 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:45,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:45,232 INFO L82 PathProgramCache]: Analyzing trace with hash 656330075, now seen corresponding path program 214 times [2021-05-22 02:04:45,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:45,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042713254] [2021-05-22 02:04:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:45,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:45,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042713254] [2021-05-22 02:04:45,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042713254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:45,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:45,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:45,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436419407] [2021-05-22 02:04:45,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:45,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:45,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:45,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:45,534 INFO L87 Difference]: Start difference. First operand 13419 states and 71235 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:45,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:45,767 INFO L93 Difference]: Finished difference Result 31544 states and 158488 transitions. [2021-05-22 02:04:45,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:45,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:45,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:45,867 INFO L225 Difference]: With dead ends: 31544 [2021-05-22 02:04:45,867 INFO L226 Difference]: Without dead ends: 30669 [2021-05-22 02:04:45,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 187.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30669 states. [2021-05-22 02:04:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30669 to 13307. [2021-05-22 02:04:47,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.314519765519314) internal successors, (70715), 13306 states have internal predecessors, (70715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70715 transitions. [2021-05-22 02:04:47,107 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70715 transitions. Word has length 33 [2021-05-22 02:04:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:47,107 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70715 transitions. [2021-05-22 02:04:47,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:47,107 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70715 transitions. [2021-05-22 02:04:47,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:47,135 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:47,135 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, 1, 1, 1, 1] [2021-05-22 02:04:47,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-05-22 02:04:47,135 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:47,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:47,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1636371645, now seen corresponding path program 215 times [2021-05-22 02:04:47,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:47,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251651069] [2021-05-22 02:04:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:47,293 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 02:04:47,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:47,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251651069] [2021-05-22 02:04:47,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251651069] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:47,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:47,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:47,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757365912] [2021-05-22 02:04:47,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:47,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:47,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:47,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:47,294 INFO L87 Difference]: Start difference. First operand 13307 states and 70715 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:47,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:47,505 INFO L93 Difference]: Finished difference Result 31912 states and 160193 transitions. [2021-05-22 02:04:47,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:47,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:47,607 INFO L225 Difference]: With dead ends: 31912 [2021-05-22 02:04:47,608 INFO L226 Difference]: Without dead ends: 31018 [2021-05-22 02:04:47,608 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 159.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:48,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31018 states. [2021-05-22 02:04:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31018 to 13497. [2021-05-22 02:04:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13497 states, 13496 states have (on average 5.2963841138114995) internal successors, (71480), 13496 states have internal predecessors, (71480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 71480 transitions. [2021-05-22 02:04:48,831 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 71480 transitions. Word has length 33 [2021-05-22 02:04:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:48,832 INFO L482 AbstractCegarLoop]: Abstraction has 13497 states and 71480 transitions. [2021-05-22 02:04:48,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:48,832 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 71480 transitions. [2021-05-22 02:04:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:48,859 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:48,859 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:48,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-05-22 02:04:48,860 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:48,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:48,860 INFO L82 PathProgramCache]: Analyzing trace with hash -396640997, now seen corresponding path program 216 times [2021-05-22 02:04:48,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:48,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444566458] [2021-05-22 02:04:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:49,004 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 02:04:49,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:49,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444566458] [2021-05-22 02:04:49,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444566458] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:49,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:49,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:49,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874767048] [2021-05-22 02:04:49,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:49,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:49,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:49,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:49,005 INFO L87 Difference]: Start difference. First operand 13497 states and 71480 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:49,259 INFO L93 Difference]: Finished difference Result 31781 states and 159420 transitions. [2021-05-22 02:04:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:49,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:49,361 INFO L225 Difference]: With dead ends: 31781 [2021-05-22 02:04:49,361 INFO L226 Difference]: Without dead ends: 30696 [2021-05-22 02:04:49,361 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 172.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30696 states. [2021-05-22 02:04:50,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30696 to 13175. [2021-05-22 02:04:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13175 states, 13174 states have (on average 5.328146348868985) internal successors, (70193), 13174 states have internal predecessors, (70193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13175 states to 13175 states and 70193 transitions. [2021-05-22 02:04:50,628 INFO L78 Accepts]: Start accepts. Automaton has 13175 states and 70193 transitions. Word has length 33 [2021-05-22 02:04:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:50,628 INFO L482 AbstractCegarLoop]: Abstraction has 13175 states and 70193 transitions. [2021-05-22 02:04:50,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 13175 states and 70193 transitions. [2021-05-22 02:04:50,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:50,656 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:50,656 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, 1, 1, 1, 1] [2021-05-22 02:04:50,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-05-22 02:04:50,656 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:50,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:50,656 INFO L82 PathProgramCache]: Analyzing trace with hash 776824663, now seen corresponding path program 217 times [2021-05-22 02:04:50,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:50,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579945873] [2021-05-22 02:04:50,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:50,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:50,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579945873] [2021-05-22 02:04:50,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579945873] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:50,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:50,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:50,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496221502] [2021-05-22 02:04:50,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:50,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:50,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:50,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:50,811 INFO L87 Difference]: Start difference. First operand 13175 states and 70193 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:51,043 INFO L93 Difference]: Finished difference Result 31484 states and 158570 transitions. [2021-05-22 02:04:51,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:51,044 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:51,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:51,146 INFO L225 Difference]: With dead ends: 31484 [2021-05-22 02:04:51,146 INFO L226 Difference]: Without dead ends: 30733 [2021-05-22 02:04:51,146 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30733 states. [2021-05-22 02:04:52,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30733 to 13419. [2021-05-22 02:04:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13419 states, 13418 states have (on average 5.322477269339693) internal successors, (71417), 13418 states have internal predecessors, (71417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71417 transitions. [2021-05-22 02:04:52,419 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71417 transitions. Word has length 33 [2021-05-22 02:04:52,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:52,419 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71417 transitions. [2021-05-22 02:04:52,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71417 transitions. [2021-05-22 02:04:52,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:52,446 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:52,446 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, 1, 1, 1, 1] [2021-05-22 02:04:52,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-05-22 02:04:52,446 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:52,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:52,446 INFO L82 PathProgramCache]: Analyzing trace with hash 295922617, now seen corresponding path program 218 times [2021-05-22 02:04:52,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:52,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345837061] [2021-05-22 02:04:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:52,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:52,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345837061] [2021-05-22 02:04:52,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345837061] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:52,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:52,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:52,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810074704] [2021-05-22 02:04:52,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:52,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:52,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:52,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:52,594 INFO L87 Difference]: Start difference. First operand 13419 states and 71417 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:52,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:52,818 INFO L93 Difference]: Finished difference Result 31468 states and 158394 transitions. [2021-05-22 02:04:52,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:52,819 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:53,156 INFO L225 Difference]: With dead ends: 31468 [2021-05-22 02:04:53,156 INFO L226 Difference]: Without dead ends: 30621 [2021-05-22 02:04:53,156 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:53,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30621 states. [2021-05-22 02:04:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30621 to 13307. [2021-05-22 02:04:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.3281978055012775) internal successors, (70897), 13306 states have internal predecessors, (70897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70897 transitions. [2021-05-22 02:04:54,193 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70897 transitions. Word has length 33 [2021-05-22 02:04:54,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:54,193 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70897 transitions. [2021-05-22 02:04:54,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:54,193 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70897 transitions. [2021-05-22 02:04:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:54,220 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:54,220 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, 1, 1, 1, 1] [2021-05-22 02:04:54,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-05-22 02:04:54,220 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:54,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:54,221 INFO L82 PathProgramCache]: Analyzing trace with hash 350848697, now seen corresponding path program 219 times [2021-05-22 02:04:54,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:54,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39372111] [2021-05-22 02:04:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:54,382 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 02:04:54,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:54,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39372111] [2021-05-22 02:04:54,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39372111] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:54,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:54,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:54,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518818817] [2021-05-22 02:04:54,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:54,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:54,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:54,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:54,383 INFO L87 Difference]: Start difference. First operand 13307 states and 70897 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:54,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:54,795 INFO L93 Difference]: Finished difference Result 31715 states and 159557 transitions. [2021-05-22 02:04:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:54,796 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:54,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:54,895 INFO L225 Difference]: With dead ends: 31715 [2021-05-22 02:04:54,895 INFO L226 Difference]: Without dead ends: 30964 [2021-05-22 02:04:54,895 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 188.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:55,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30964 states. [2021-05-22 02:04:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30964 to 13491. [2021-05-22 02:04:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13491 states, 13490 states have (on average 5.315715344699778) internal successors, (71709), 13490 states have internal predecessors, (71709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71709 transitions. [2021-05-22 02:04:55,959 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71709 transitions. Word has length 33 [2021-05-22 02:04:55,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:55,959 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71709 transitions. [2021-05-22 02:04:55,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:55,959 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71709 transitions. [2021-05-22 02:04:56,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:56,127 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:56,127 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, 1, 1, 1, 1] [2021-05-22 02:04:56,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-05-22 02:04:56,127 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:56,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:56,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2069913273, now seen corresponding path program 220 times [2021-05-22 02:04:56,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:56,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666834086] [2021-05-22 02:04:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:56,291 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 02:04:56,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:56,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666834086] [2021-05-22 02:04:56,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666834086] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:56,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:56,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:56,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156290797] [2021-05-22 02:04:56,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:56,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:56,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:56,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:56,292 INFO L87 Difference]: Start difference. First operand 13491 states and 71709 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:56,508 INFO L93 Difference]: Finished difference Result 31858 states and 160060 transitions. [2021-05-22 02:04:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:56,508 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:56,610 INFO L225 Difference]: With dead ends: 31858 [2021-05-22 02:04:56,610 INFO L226 Difference]: Without dead ends: 30780 [2021-05-22 02:04:56,611 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 171.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30780 states. [2021-05-22 02:04:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30780 to 13307. [2021-05-22 02:04:57,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.321584247707801) internal successors, (70809), 13306 states have internal predecessors, (70809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70809 transitions. [2021-05-22 02:04:57,829 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70809 transitions. Word has length 33 [2021-05-22 02:04:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:57,829 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70809 transitions. [2021-05-22 02:04:57,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70809 transitions. [2021-05-22 02:04:57,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:57,857 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:57,857 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, 1, 1, 1, 1] [2021-05-22 02:04:57,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-05-22 02:04:57,857 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:57,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:57,857 INFO L82 PathProgramCache]: Analyzing trace with hash -438537573, now seen corresponding path program 221 times [2021-05-22 02:04:57,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:57,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918248339] [2021-05-22 02:04:57,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:58,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:58,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918248339] [2021-05-22 02:04:58,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918248339] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:58,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:58,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:58,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914192787] [2021-05-22 02:04:58,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:58,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:58,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:58,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:58,016 INFO L87 Difference]: Start difference. First operand 13307 states and 70809 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:58,242 INFO L93 Difference]: Finished difference Result 31675 states and 159305 transitions. [2021-05-22 02:04:58,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:58,242 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:58,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:58,349 INFO L225 Difference]: With dead ends: 31675 [2021-05-22 02:04:58,349 INFO L226 Difference]: Without dead ends: 30940 [2021-05-22 02:04:58,349 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 184.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:04:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30940 states. [2021-05-22 02:04:59,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30940 to 13483. [2021-05-22 02:04:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13483 states, 13482 states have (on average 5.310265539237502) internal successors, (71593), 13482 states have internal predecessors, (71593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71593 transitions. [2021-05-22 02:04:59,574 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71593 transitions. Word has length 33 [2021-05-22 02:04:59,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:59,574 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71593 transitions. [2021-05-22 02:04:59,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:59,574 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71593 transitions. [2021-05-22 02:04:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:04:59,602 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:59,602 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, 1, 1, 1, 1] [2021-05-22 02:04:59,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-05-22 02:04:59,602 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:59,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1903025913, now seen corresponding path program 222 times [2021-05-22 02:04:59,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:59,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900492991] [2021-05-22 02:04:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:59,764 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 02:04:59,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:59,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900492991] [2021-05-22 02:04:59,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900492991] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:59,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:59,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:04:59,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367876789] [2021-05-22 02:04:59,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:04:59,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:59,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:04:59,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:59,765 INFO L87 Difference]: Start difference. First operand 13483 states and 71593 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:59,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:59,970 INFO L93 Difference]: Finished difference Result 31834 states and 159880 transitions. [2021-05-22 02:04:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:04:59,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:04:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:00,069 INFO L225 Difference]: With dead ends: 31834 [2021-05-22 02:05:00,069 INFO L226 Difference]: Without dead ends: 30676 [2021-05-22 02:05:00,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30676 states. [2021-05-22 02:05:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30676 to 13219. [2021-05-22 02:05:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 13218 states have (on average 5.327356634891814) internal successors, (70417), 13218 states have internal predecessors, (70417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:01,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70417 transitions. [2021-05-22 02:05:01,346 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70417 transitions. Word has length 33 [2021-05-22 02:05:01,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:01,347 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70417 transitions. [2021-05-22 02:05:01,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70417 transitions. [2021-05-22 02:05:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:01,373 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:01,373 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, 1, 1, 1, 1] [2021-05-22 02:05:01,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-05-22 02:05:01,374 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:01,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:01,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1368952263, now seen corresponding path program 223 times [2021-05-22 02:05:01,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:01,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460367654] [2021-05-22 02:05:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:01,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:01,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460367654] [2021-05-22 02:05:01,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460367654] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:01,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:01,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:01,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928514306] [2021-05-22 02:05:01,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:01,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:01,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:01,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:01,511 INFO L87 Difference]: Start difference. First operand 13219 states and 70417 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:01,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:01,766 INFO L93 Difference]: Finished difference Result 31193 states and 157127 transitions. [2021-05-22 02:05:01,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:01,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:01,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:01,867 INFO L225 Difference]: With dead ends: 31193 [2021-05-22 02:05:01,867 INFO L226 Difference]: Without dead ends: 30442 [2021-05-22 02:05:01,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:02,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30442 states. [2021-05-22 02:05:03,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30442 to 13387. [2021-05-22 02:05:03,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13387 states, 13386 states have (on average 5.318765874794561) internal successors, (71197), 13386 states have internal predecessors, (71197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71197 transitions. [2021-05-22 02:05:03,134 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71197 transitions. Word has length 33 [2021-05-22 02:05:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:03,134 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71197 transitions. [2021-05-22 02:05:03,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71197 transitions. [2021-05-22 02:05:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:03,161 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:03,161 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, 1, 1, 1, 1] [2021-05-22 02:05:03,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-05-22 02:05:03,161 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:03,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:03,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1849854309, now seen corresponding path program 224 times [2021-05-22 02:05:03,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:03,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422965668] [2021-05-22 02:05:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:03,297 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 02:05:03,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:03,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422965668] [2021-05-22 02:05:03,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422965668] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:03,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:03,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:03,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462807437] [2021-05-22 02:05:03,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:03,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:03,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:03,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:03,298 INFO L87 Difference]: Start difference. First operand 13387 states and 71197 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:03,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:03,532 INFO L93 Difference]: Finished difference Result 31177 states and 156951 transitions. [2021-05-22 02:05:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:03,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:03,866 INFO L225 Difference]: With dead ends: 31177 [2021-05-22 02:05:03,866 INFO L226 Difference]: Without dead ends: 30330 [2021-05-22 02:05:03,866 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30330 states. [2021-05-22 02:05:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30330 to 13275. [2021-05-22 02:05:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13275 states, 13274 states have (on average 5.324468886545126) internal successors, (70677), 13274 states have internal predecessors, (70677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70677 transitions. [2021-05-22 02:05:04,913 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70677 transitions. Word has length 33 [2021-05-22 02:05:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:04,913 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70677 transitions. [2021-05-22 02:05:04,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70677 transitions. [2021-05-22 02:05:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:04,941 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:04,941 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, 1, 1, 1, 1] [2021-05-22 02:05:04,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-05-22 02:05:04,941 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:04,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1881503161, now seen corresponding path program 225 times [2021-05-22 02:05:04,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:04,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623656229] [2021-05-22 02:05:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:05,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:05,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623656229] [2021-05-22 02:05:05,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623656229] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:05,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:05,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:05,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492893695] [2021-05-22 02:05:05,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:05,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:05,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:05,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:05,077 INFO L87 Difference]: Start difference. First operand 13275 states and 70677 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:05,482 INFO L93 Difference]: Finished difference Result 31229 states and 157211 transitions. [2021-05-22 02:05:05,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:05,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:05,586 INFO L225 Difference]: With dead ends: 31229 [2021-05-22 02:05:05,586 INFO L226 Difference]: Without dead ends: 30478 [2021-05-22 02:05:05,586 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:06,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30478 states. [2021-05-22 02:05:06,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30478 to 13395. [2021-05-22 02:05:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13395 states, 13394 states have (on average 5.3134985814543825) internal successors, (71169), 13394 states have internal predecessors, (71169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71169 transitions. [2021-05-22 02:05:06,661 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71169 transitions. Word has length 33 [2021-05-22 02:05:06,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:06,661 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71169 transitions. [2021-05-22 02:05:06,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:06,661 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71169 transitions. [2021-05-22 02:05:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:06,826 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:06,827 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:06,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-05-22 02:05:06,827 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:06,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2100417095, now seen corresponding path program 226 times [2021-05-22 02:05:06,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:06,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928251944] [2021-05-22 02:05:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:06,982 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 02:05:06,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:06,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928251944] [2021-05-22 02:05:06,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928251944] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:06,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:06,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:06,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314922789] [2021-05-22 02:05:06,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:06,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:06,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:06,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:06,983 INFO L87 Difference]: Start difference. First operand 13395 states and 71169 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:07,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:07,219 INFO L93 Difference]: Finished difference Result 31241 states and 157131 transitions. [2021-05-22 02:05:07,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:07,220 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:07,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:07,319 INFO L225 Difference]: With dead ends: 31241 [2021-05-22 02:05:07,319 INFO L226 Difference]: Without dead ends: 30358 [2021-05-22 02:05:07,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 181.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:08,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30358 states. [2021-05-22 02:05:08,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30358 to 13275. [2021-05-22 02:05:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13275 states, 13274 states have (on average 5.320250113002863) internal successors, (70621), 13274 states have internal predecessors, (70621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70621 transitions. [2021-05-22 02:05:08,558 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70621 transitions. Word has length 33 [2021-05-22 02:05:08,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:08,558 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70621 transitions. [2021-05-22 02:05:08,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:08,558 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70621 transitions. [2021-05-22 02:05:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:08,586 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:08,586 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:08,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-05-22 02:05:08,587 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:08,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1092116891, now seen corresponding path program 227 times [2021-05-22 02:05:08,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:08,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33643561] [2021-05-22 02:05:08,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:08,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:08,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33643561] [2021-05-22 02:05:08,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33643561] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:08,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:08,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:08,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684521890] [2021-05-22 02:05:08,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:08,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:08,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:08,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:08,746 INFO L87 Difference]: Start difference. First operand 13275 states and 70621 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:09,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:09,002 INFO L93 Difference]: Finished difference Result 31189 states and 156991 transitions. [2021-05-22 02:05:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:09,003 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:09,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:09,105 INFO L225 Difference]: With dead ends: 31189 [2021-05-22 02:05:09,105 INFO L226 Difference]: Without dead ends: 30454 [2021-05-22 02:05:09,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 179.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:09,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30454 states. [2021-05-22 02:05:10,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30454 to 13387. [2021-05-22 02:05:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13387 states, 13386 states have (on average 5.310398924249216) internal successors, (71085), 13386 states have internal predecessors, (71085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71085 transitions. [2021-05-22 02:05:10,327 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71085 transitions. Word has length 33 [2021-05-22 02:05:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:10,327 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71085 transitions. [2021-05-22 02:05:10,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:10,328 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71085 transitions. [2021-05-22 02:05:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:10,355 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:10,355 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:10,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-05-22 02:05:10,356 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:10,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:10,356 INFO L82 PathProgramCache]: Analyzing trace with hash -881189127, now seen corresponding path program 228 times [2021-05-22 02:05:10,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:10,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021291504] [2021-05-22 02:05:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:10,503 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 02:05:10,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:10,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021291504] [2021-05-22 02:05:10,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021291504] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:10,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:10,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:10,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9564554] [2021-05-22 02:05:10,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:10,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:10,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:10,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:10,504 INFO L87 Difference]: Start difference. First operand 13387 states and 71085 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:10,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:10,733 INFO L93 Difference]: Finished difference Result 31217 states and 156983 transitions. [2021-05-22 02:05:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:10,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:10,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:10,832 INFO L225 Difference]: With dead ends: 31217 [2021-05-22 02:05:10,832 INFO L226 Difference]: Without dead ends: 30286 [2021-05-22 02:05:10,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30286 states. [2021-05-22 02:05:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30286 to 13219. [2021-05-22 02:05:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 13218 states have (on average 5.325238311393554) internal successors, (70389), 13218 states have internal predecessors, (70389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70389 transitions. [2021-05-22 02:05:12,095 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70389 transitions. Word has length 33 [2021-05-22 02:05:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:12,095 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70389 transitions. [2021-05-22 02:05:12,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:12,095 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70389 transitions. [2021-05-22 02:05:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:12,123 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:12,123 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, 1, 1, 1, 1] [2021-05-22 02:05:12,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-05-22 02:05:12,123 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:12,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:12,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1191353189, now seen corresponding path program 229 times [2021-05-22 02:05:12,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:12,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161564443] [2021-05-22 02:05:12,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:12,273 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 02:05:12,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:12,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161564443] [2021-05-22 02:05:12,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161564443] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:12,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:12,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:12,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552437437] [2021-05-22 02:05:12,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:12,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:12,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:12,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:12,274 INFO L87 Difference]: Start difference. First operand 13219 states and 70389 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:12,503 INFO L93 Difference]: Finished difference Result 31769 states and 159760 transitions. [2021-05-22 02:05:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:12,503 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:12,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:12,605 INFO L225 Difference]: With dead ends: 31769 [2021-05-22 02:05:12,605 INFO L226 Difference]: Without dead ends: 31018 [2021-05-22 02:05:12,605 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:13,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31018 states. [2021-05-22 02:05:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31018 to 13495. [2021-05-22 02:05:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13495 states, 13494 states have (on average 5.314436045649918) internal successors, (71713), 13494 states have internal predecessors, (71713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:13,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 71713 transitions. [2021-05-22 02:05:13,902 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 71713 transitions. Word has length 33 [2021-05-22 02:05:13,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:13,902 INFO L482 AbstractCegarLoop]: Abstraction has 13495 states and 71713 transitions. [2021-05-22 02:05:13,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:13,902 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 71713 transitions. [2021-05-22 02:05:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:13,930 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:13,930 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, 1, 1, 1, 1] [2021-05-22 02:05:13,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-05-22 02:05:13,931 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:13,931 INFO L82 PathProgramCache]: Analyzing trace with hash 527711387, now seen corresponding path program 230 times [2021-05-22 02:05:13,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:13,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121258619] [2021-05-22 02:05:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:14,081 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 02:05:14,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:14,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121258619] [2021-05-22 02:05:14,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121258619] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:14,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:14,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:14,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476966409] [2021-05-22 02:05:14,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:14,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:14,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:14,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:14,082 INFO L87 Difference]: Start difference. First operand 13495 states and 71713 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:14,297 INFO L93 Difference]: Finished difference Result 31912 states and 160263 transitions. [2021-05-22 02:05:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:14,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:14,651 INFO L225 Difference]: With dead ends: 31912 [2021-05-22 02:05:14,652 INFO L226 Difference]: Without dead ends: 30834 [2021-05-22 02:05:14,652 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 158.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:15,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30834 states. [2021-05-22 02:05:15,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30834 to 13311. [2021-05-22 02:05:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13311 states, 13310 states have (on average 5.319984973703982) internal successors, (70809), 13310 states have internal predecessors, (70809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13311 states to 13311 states and 70809 transitions. [2021-05-22 02:05:15,712 INFO L78 Accepts]: Start accepts. Automaton has 13311 states and 70809 transitions. Word has length 33 [2021-05-22 02:05:15,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:15,712 INFO L482 AbstractCegarLoop]: Abstraction has 13311 states and 70809 transitions. [2021-05-22 02:05:15,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 13311 states and 70809 transitions. [2021-05-22 02:05:15,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:15,739 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:15,740 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, 1, 1, 1, 1] [2021-05-22 02:05:15,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-05-22 02:05:15,740 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:15,740 INFO L82 PathProgramCache]: Analyzing trace with hash -706382471, now seen corresponding path program 231 times [2021-05-22 02:05:15,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:15,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045350269] [2021-05-22 02:05:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:15,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:15,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045350269] [2021-05-22 02:05:15,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045350269] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:15,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:15,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:15,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423612493] [2021-05-22 02:05:15,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:15,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:15,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:15,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:15,876 INFO L87 Difference]: Start difference. First operand 13311 states and 70809 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:16,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:16,325 INFO L93 Difference]: Finished difference Result 31574 states and 158765 transitions. [2021-05-22 02:05:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:16,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:16,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:16,430 INFO L225 Difference]: With dead ends: 31574 [2021-05-22 02:05:16,430 INFO L226 Difference]: Without dead ends: 30823 [2021-05-22 02:05:16,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:17,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30823 states. [2021-05-22 02:05:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30823 to 13431. [2021-05-22 02:05:17,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13431 states, 13430 states have (on average 5.309084139985108) internal successors, (71301), 13430 states have internal predecessors, (71301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13431 states to 13431 states and 71301 transitions. [2021-05-22 02:05:17,519 INFO L78 Accepts]: Start accepts. Automaton has 13431 states and 71301 transitions. Word has length 33 [2021-05-22 02:05:17,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:17,520 INFO L482 AbstractCegarLoop]: Abstraction has 13431 states and 71301 transitions. [2021-05-22 02:05:17,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 13431 states and 71301 transitions. [2021-05-22 02:05:17,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:17,693 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:17,693 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, 1, 1, 1, 1] [2021-05-22 02:05:17,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-05-22 02:05:17,693 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:17,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:17,693 INFO L82 PathProgramCache]: Analyzing trace with hash 853539995, now seen corresponding path program 232 times [2021-05-22 02:05:17,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:17,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109130374] [2021-05-22 02:05:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:17,828 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 02:05:17,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:17,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109130374] [2021-05-22 02:05:17,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109130374] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:17,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:17,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:17,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865124055] [2021-05-22 02:05:17,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:17,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:17,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:17,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:17,829 INFO L87 Difference]: Start difference. First operand 13431 states and 71301 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:18,063 INFO L93 Difference]: Finished difference Result 31586 states and 158685 transitions. [2021-05-22 02:05:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:18,063 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:18,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:18,162 INFO L225 Difference]: With dead ends: 31586 [2021-05-22 02:05:18,162 INFO L226 Difference]: Without dead ends: 30703 [2021-05-22 02:05:18,163 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:18,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30703 states. [2021-05-22 02:05:19,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30703 to 13311. [2021-05-22 02:05:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13311 states, 13310 states have (on average 5.315477084898572) internal successors, (70749), 13310 states have internal predecessors, (70749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13311 states to 13311 states and 70749 transitions. [2021-05-22 02:05:19,427 INFO L78 Accepts]: Start accepts. Automaton has 13311 states and 70749 transitions. Word has length 33 [2021-05-22 02:05:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:19,427 INFO L482 AbstractCegarLoop]: Abstraction has 13311 states and 70749 transitions. [2021-05-22 02:05:19,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 13311 states and 70749 transitions. [2021-05-22 02:05:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:19,454 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:19,454 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:19,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-05-22 02:05:19,455 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:19,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:19,455 INFO L82 PathProgramCache]: Analyzing trace with hash 718206107, now seen corresponding path program 233 times [2021-05-22 02:05:19,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:19,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748576641] [2021-05-22 02:05:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:19,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:19,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748576641] [2021-05-22 02:05:19,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748576641] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:19,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:19,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:19,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000885836] [2021-05-22 02:05:19,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:19,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:19,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:19,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:19,591 INFO L87 Difference]: Start difference. First operand 13311 states and 70749 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:19,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:19,802 INFO L93 Difference]: Finished difference Result 31930 states and 160294 transitions. [2021-05-22 02:05:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:19,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:19,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:19,904 INFO L225 Difference]: With dead ends: 31930 [2021-05-22 02:05:19,904 INFO L226 Difference]: Without dead ends: 31036 [2021-05-22 02:05:19,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 143.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31036 states. [2021-05-22 02:05:21,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31036 to 13501. [2021-05-22 02:05:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13501 states, 13500 states have (on average 5.2973333333333334) internal successors, (71514), 13500 states have internal predecessors, (71514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13501 states to 13501 states and 71514 transitions. [2021-05-22 02:05:21,135 INFO L78 Accepts]: Start accepts. Automaton has 13501 states and 71514 transitions. Word has length 33 [2021-05-22 02:05:21,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:21,135 INFO L482 AbstractCegarLoop]: Abstraction has 13501 states and 71514 transitions. [2021-05-22 02:05:21,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:21,135 INFO L276 IsEmpty]: Start isEmpty. Operand 13501 states and 71514 transitions. [2021-05-22 02:05:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:21,164 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:21,164 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, 1, 1, 1, 1] [2021-05-22 02:05:21,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-05-22 02:05:21,164 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:21,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1314806535, now seen corresponding path program 234 times [2021-05-22 02:05:21,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:21,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385651546] [2021-05-22 02:05:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:21,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:21,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385651546] [2021-05-22 02:05:21,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385651546] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:21,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:21,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:21,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606089961] [2021-05-22 02:05:21,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:21,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:21,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:21,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:21,309 INFO L87 Difference]: Start difference. First operand 13501 states and 71514 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:21,554 INFO L93 Difference]: Finished difference Result 31799 states and 159521 transitions. [2021-05-22 02:05:21,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:21,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:21,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:21,657 INFO L225 Difference]: With dead ends: 31799 [2021-05-22 02:05:21,657 INFO L226 Difference]: Without dead ends: 30754 [2021-05-22 02:05:21,657 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:22,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30754 states. [2021-05-22 02:05:22,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30754 to 13219. [2021-05-22 02:05:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 13218 states have (on average 5.32190951732486) internal successors, (70345), 13218 states have internal predecessors, (70345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70345 transitions. [2021-05-22 02:05:22,927 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70345 transitions. Word has length 33 [2021-05-22 02:05:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:22,927 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70345 transitions. [2021-05-22 02:05:22,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:22,927 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70345 transitions. [2021-05-22 02:05:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:22,954 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:22,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:22,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-05-22 02:05:22,955 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:22,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:22,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2081335299, now seen corresponding path program 235 times [2021-05-22 02:05:22,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:22,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300586599] [2021-05-22 02:05:22,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:23,120 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 02:05:23,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:23,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300586599] [2021-05-22 02:05:23,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300586599] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:23,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:23,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:23,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134077677] [2021-05-22 02:05:23,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:23,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:23,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:23,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:23,121 INFO L87 Difference]: Start difference. First operand 13219 states and 70345 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:23,369 INFO L93 Difference]: Finished difference Result 31693 states and 159396 transitions. [2021-05-22 02:05:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:23,369 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:23,474 INFO L225 Difference]: With dead ends: 31693 [2021-05-22 02:05:23,474 INFO L226 Difference]: Without dead ends: 30958 [2021-05-22 02:05:23,474 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 188.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:24,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30958 states. [2021-05-22 02:05:24,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30958 to 13483. [2021-05-22 02:05:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13483 states, 13482 states have (on average 5.3123423824358404) internal successors, (71621), 13482 states have internal predecessors, (71621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71621 transitions. [2021-05-22 02:05:24,736 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71621 transitions. Word has length 33 [2021-05-22 02:05:24,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:24,736 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71621 transitions. [2021-05-22 02:05:24,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:24,737 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71621 transitions. [2021-05-22 02:05:24,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:24,765 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:24,765 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:24,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-05-22 02:05:24,765 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:24,765 INFO L82 PathProgramCache]: Analyzing trace with hash 260228187, now seen corresponding path program 236 times [2021-05-22 02:05:24,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:24,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955043029] [2021-05-22 02:05:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:24,925 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 02:05:24,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:24,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955043029] [2021-05-22 02:05:24,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955043029] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:24,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:24,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:24,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841908178] [2021-05-22 02:05:24,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:24,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:24,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:24,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:24,926 INFO L87 Difference]: Start difference. First operand 13483 states and 71621 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:25,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:25,154 INFO L93 Difference]: Finished difference Result 31852 states and 159971 transitions. [2021-05-22 02:05:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:25,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:25,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:25,495 INFO L225 Difference]: With dead ends: 31852 [2021-05-22 02:05:25,495 INFO L226 Difference]: Without dead ends: 30782 [2021-05-22 02:05:25,495 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30782 states. [2021-05-22 02:05:26,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30782 to 13307. [2021-05-22 02:05:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.3170750037577035) internal successors, (70749), 13306 states have internal predecessors, (70749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:26,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70749 transitions. [2021-05-22 02:05:26,538 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70749 transitions. Word has length 33 [2021-05-22 02:05:26,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:26,538 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70749 transitions. [2021-05-22 02:05:26,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:26,538 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70749 transitions. [2021-05-22 02:05:26,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:26,566 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:26,566 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:26,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-05-22 02:05:26,566 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:26,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:26,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1596364581, now seen corresponding path program 237 times [2021-05-22 02:05:26,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:26,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223241220] [2021-05-22 02:05:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:26,730 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 02:05:26,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:26,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223241220] [2021-05-22 02:05:26,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223241220] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:26,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:26,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:26,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949917335] [2021-05-22 02:05:26,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:26,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:26,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:26,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:26,731 INFO L87 Difference]: Start difference. First operand 13307 states and 70749 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:27,031 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2021-05-22 02:05:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:27,138 INFO L93 Difference]: Finished difference Result 31498 states and 158405 transitions. [2021-05-22 02:05:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:27,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:27,244 INFO L225 Difference]: With dead ends: 31498 [2021-05-22 02:05:27,245 INFO L226 Difference]: Without dead ends: 30763 [2021-05-22 02:05:27,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 369.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30763 states. [2021-05-22 02:05:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30763 to 13419. [2021-05-22 02:05:28,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13419 states, 13418 states have (on average 5.3072738112982565) internal successors, (71213), 13418 states have internal predecessors, (71213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71213 transitions. [2021-05-22 02:05:28,550 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71213 transitions. Word has length 33 [2021-05-22 02:05:28,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:28,550 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71213 transitions. [2021-05-22 02:05:28,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:28,551 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71213 transitions. [2021-05-22 02:05:28,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:28,588 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:28,588 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, 1, 1, 1, 1] [2021-05-22 02:05:28,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-05-22 02:05:28,588 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:28,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:28,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1972172123, now seen corresponding path program 238 times [2021-05-22 02:05:28,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:28,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231280007] [2021-05-22 02:05:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:28,754 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 02:05:28,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:28,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231280007] [2021-05-22 02:05:28,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231280007] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:28,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:28,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:28,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891014590] [2021-05-22 02:05:28,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:28,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:28,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:28,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:28,755 INFO L87 Difference]: Start difference. First operand 13419 states and 71213 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:28,990 INFO L93 Difference]: Finished difference Result 31526 states and 158397 transitions. [2021-05-22 02:05:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:28,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:29,093 INFO L225 Difference]: With dead ends: 31526 [2021-05-22 02:05:29,094 INFO L226 Difference]: Without dead ends: 30651 [2021-05-22 02:05:29,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 192.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:29,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30651 states. [2021-05-22 02:05:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30651 to 13307. [2021-05-22 02:05:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13307 states, 13306 states have (on average 5.312866376070946) internal successors, (70693), 13306 states have internal predecessors, (70693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:30,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70693 transitions. [2021-05-22 02:05:30,355 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70693 transitions. Word has length 33 [2021-05-22 02:05:30,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:30,355 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70693 transitions. [2021-05-22 02:05:30,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70693 transitions. [2021-05-22 02:05:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:30,383 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:30,383 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, 1, 1, 1, 1] [2021-05-22 02:05:30,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-05-22 02:05:30,383 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:30,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2006277575, now seen corresponding path program 239 times [2021-05-22 02:05:30,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:30,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32103833] [2021-05-22 02:05:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:30,532 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 02:05:30,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:30,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32103833] [2021-05-22 02:05:30,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32103833] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:30,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:30,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:30,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647485639] [2021-05-22 02:05:30,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:30,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:30,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:30,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:30,533 INFO L87 Difference]: Start difference. First operand 13307 states and 70693 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:30,742 INFO L93 Difference]: Finished difference Result 31894 states and 160102 transitions. [2021-05-22 02:05:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:30,742 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:30,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:30,847 INFO L225 Difference]: With dead ends: 31894 [2021-05-22 02:05:30,848 INFO L226 Difference]: Without dead ends: 31000 [2021-05-22 02:05:30,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31000 states. [2021-05-22 02:05:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31000 to 13497. [2021-05-22 02:05:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13497 states, 13496 states have (on average 5.294754001185536) internal successors, (71458), 13496 states have internal predecessors, (71458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 71458 transitions. [2021-05-22 02:05:32,086 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 71458 transitions. Word has length 33 [2021-05-22 02:05:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:32,086 INFO L482 AbstractCegarLoop]: Abstraction has 13497 states and 71458 transitions. [2021-05-22 02:05:32,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 71458 transitions. [2021-05-22 02:05:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:32,114 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:32,114 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, 1, 1, 1, 1] [2021-05-22 02:05:32,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-05-22 02:05:32,114 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:32,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:32,114 INFO L82 PathProgramCache]: Analyzing trace with hash -605160037, now seen corresponding path program 240 times [2021-05-22 02:05:32,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:32,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440350878] [2021-05-22 02:05:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:32,264 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 02:05:32,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:32,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440350878] [2021-05-22 02:05:32,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440350878] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:32,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:32,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:32,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311118381] [2021-05-22 02:05:32,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:32,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:32,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:32,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:32,265 INFO L87 Difference]: Start difference. First operand 13497 states and 71458 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:32,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:32,494 INFO L93 Difference]: Finished difference Result 31763 states and 159329 transitions. [2021-05-22 02:05:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:32,494 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:32,594 INFO L225 Difference]: With dead ends: 31763 [2021-05-22 02:05:32,594 INFO L226 Difference]: Without dead ends: 30656 [2021-05-22 02:05:32,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:33,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30656 states. [2021-05-22 02:05:33,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30656 to 13153. [2021-05-22 02:05:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13153 states, 13152 states have (on average 5.331280413625304) internal successors, (70117), 13152 states have internal predecessors, (70117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13153 states to 13153 states and 70117 transitions. [2021-05-22 02:05:33,861 INFO L78 Accepts]: Start accepts. Automaton has 13153 states and 70117 transitions. Word has length 33 [2021-05-22 02:05:33,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:33,861 INFO L482 AbstractCegarLoop]: Abstraction has 13153 states and 70117 transitions. [2021-05-22 02:05:33,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand 13153 states and 70117 transitions. [2021-05-22 02:05:33,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:33,888 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:33,889 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:33,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-05-22 02:05:33,889 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:33,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:33,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2102111005, now seen corresponding path program 241 times [2021-05-22 02:05:33,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:33,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530305288] [2021-05-22 02:05:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:34,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:34,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530305288] [2021-05-22 02:05:34,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530305288] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:34,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:34,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:34,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902256607] [2021-05-22 02:05:34,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:34,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:34,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:34,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:34,039 INFO L87 Difference]: Start difference. First operand 13153 states and 70117 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:34,272 INFO L93 Difference]: Finished difference Result 32231 states and 161807 transitions. [2021-05-22 02:05:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:34,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:34,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:34,378 INFO L225 Difference]: With dead ends: 32231 [2021-05-22 02:05:34,378 INFO L226 Difference]: Without dead ends: 31472 [2021-05-22 02:05:34,378 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 175.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31472 states. [2021-05-22 02:05:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31472 to 13482. [2021-05-22 02:05:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13482 states, 13481 states have (on average 5.322973073214153) internal successors, (71759), 13481 states have internal predecessors, (71759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:35,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13482 states to 13482 states and 71759 transitions. [2021-05-22 02:05:35,675 INFO L78 Accepts]: Start accepts. Automaton has 13482 states and 71759 transitions. Word has length 33 [2021-05-22 02:05:35,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:35,676 INFO L482 AbstractCegarLoop]: Abstraction has 13482 states and 71759 transitions. [2021-05-22 02:05:35,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 13482 states and 71759 transitions. [2021-05-22 02:05:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:35,704 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:35,704 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:35,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-05-22 02:05:35,704 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:35,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:35,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1255314043, now seen corresponding path program 242 times [2021-05-22 02:05:35,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:35,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565720297] [2021-05-22 02:05:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:35,854 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 02:05:35,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:35,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565720297] [2021-05-22 02:05:35,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565720297] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:35,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:35,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:35,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583275119] [2021-05-22 02:05:35,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:35,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:35,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:35,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:35,855 INFO L87 Difference]: Start difference. First operand 13482 states and 71759 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:36,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:36,294 INFO L93 Difference]: Finished difference Result 32223 states and 161659 transitions. [2021-05-22 02:05:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:36,294 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:36,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:36,402 INFO L225 Difference]: With dead ends: 32223 [2021-05-22 02:05:36,403 INFO L226 Difference]: Without dead ends: 31352 [2021-05-22 02:05:36,403 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 175.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31352 states. [2021-05-22 02:05:37,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31352 to 13362. [2021-05-22 02:05:37,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13362 states, 13361 states have (on average 5.3294663573085845) internal successors, (71207), 13361 states have internal predecessors, (71207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13362 states to 13362 states and 71207 transitions. [2021-05-22 02:05:37,469 INFO L78 Accepts]: Start accepts. Automaton has 13362 states and 71207 transitions. Word has length 33 [2021-05-22 02:05:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:37,469 INFO L482 AbstractCegarLoop]: Abstraction has 13362 states and 71207 transitions. [2021-05-22 02:05:37,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 13362 states and 71207 transitions. [2021-05-22 02:05:37,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:37,498 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:37,498 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, 1, 1, 1, 1] [2021-05-22 02:05:37,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-05-22 02:05:37,498 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:37,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:37,498 INFO L82 PathProgramCache]: Analyzing trace with hash -441461987, now seen corresponding path program 243 times [2021-05-22 02:05:37,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:37,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190011170] [2021-05-22 02:05:37,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:37,813 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-22 02:05:37,813 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 02:05:37,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:37,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190011170] [2021-05-22 02:05:37,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190011170] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:37,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:37,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:37,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518516674] [2021-05-22 02:05:37,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:37,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:37,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:37,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:37,814 INFO L87 Difference]: Start difference. First operand 13362 states and 71207 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:38,060 INFO L93 Difference]: Finished difference Result 32442 states and 162706 transitions. [2021-05-22 02:05:38,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:38,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:38,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:38,163 INFO L225 Difference]: With dead ends: 32442 [2021-05-22 02:05:38,163 INFO L226 Difference]: Without dead ends: 31683 [2021-05-22 02:05:38,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 342.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31683 states. [2021-05-22 02:05:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31683 to 13550. [2021-05-22 02:05:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13550 states, 13549 states have (on average 5.316333308731272) internal successors, (72031), 13549 states have internal predecessors, (72031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13550 states to 13550 states and 72031 transitions. [2021-05-22 02:05:39,463 INFO L78 Accepts]: Start accepts. Automaton has 13550 states and 72031 transitions. Word has length 33 [2021-05-22 02:05:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:39,463 INFO L482 AbstractCegarLoop]: Abstraction has 13550 states and 72031 transitions. [2021-05-22 02:05:39,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 13550 states and 72031 transitions. [2021-05-22 02:05:39,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:39,493 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:39,493 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, 1, 1, 1, 1] [2021-05-22 02:05:39,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-05-22 02:05:39,493 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:39,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:39,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1946618653, now seen corresponding path program 244 times [2021-05-22 02:05:39,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:39,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330087757] [2021-05-22 02:05:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:39,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:39,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330087757] [2021-05-22 02:05:39,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330087757] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:39,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:39,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:39,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181460687] [2021-05-22 02:05:39,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:39,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:39,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:39,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:39,662 INFO L87 Difference]: Start difference. First operand 13550 states and 72031 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:39,890 INFO L93 Difference]: Finished difference Result 32577 states and 163177 transitions. [2021-05-22 02:05:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:39,891 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:39,992 INFO L225 Difference]: With dead ends: 32577 [2021-05-22 02:05:39,992 INFO L226 Difference]: Without dead ends: 31495 [2021-05-22 02:05:39,992 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:40,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31495 states. [2021-05-22 02:05:41,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31495 to 13362. [2021-05-22 02:05:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13362 states, 13361 states have (on average 5.32258064516129) internal successors, (71115), 13361 states have internal predecessors, (71115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13362 states to 13362 states and 71115 transitions. [2021-05-22 02:05:41,236 INFO L78 Accepts]: Start accepts. Automaton has 13362 states and 71115 transitions. Word has length 33 [2021-05-22 02:05:41,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:41,236 INFO L482 AbstractCegarLoop]: Abstraction has 13362 states and 71115 transitions. [2021-05-22 02:05:41,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:41,236 INFO L276 IsEmpty]: Start isEmpty. Operand 13362 states and 71115 transitions. [2021-05-22 02:05:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:41,263 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:41,264 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, 1, 1, 1, 1] [2021-05-22 02:05:41,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-05-22 02:05:41,264 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:41,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1298210053, now seen corresponding path program 245 times [2021-05-22 02:05:41,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:41,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513503823] [2021-05-22 02:05:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:41,428 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 02:05:41,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:41,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513503823] [2021-05-22 02:05:41,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513503823] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:41,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:41,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:41,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463203336] [2021-05-22 02:05:41,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:41,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:41,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:41,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:41,429 INFO L87 Difference]: Start difference. First operand 13362 states and 71115 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:41,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:41,682 INFO L93 Difference]: Finished difference Result 32422 states and 162542 transitions. [2021-05-22 02:05:41,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:41,683 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:41,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:41,790 INFO L225 Difference]: With dead ends: 32422 [2021-05-22 02:05:41,790 INFO L226 Difference]: Without dead ends: 31671 [2021-05-22 02:05:41,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 191.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:42,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31671 states. [2021-05-22 02:05:43,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31671 to 13546. [2021-05-22 02:05:43,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13546 states, 13545 states have (on average 5.310225175341454) internal successors, (71927), 13545 states have internal predecessors, (71927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13546 states to 13546 states and 71927 transitions. [2021-05-22 02:05:43,090 INFO L78 Accepts]: Start accepts. Automaton has 13546 states and 71927 transitions. Word has length 33 [2021-05-22 02:05:43,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:43,090 INFO L482 AbstractCegarLoop]: Abstraction has 13546 states and 71927 transitions. [2021-05-22 02:05:43,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 13546 states and 71927 transitions. [2021-05-22 02:05:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:43,120 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:43,121 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, 1, 1, 1, 1] [2021-05-22 02:05:43,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-05-22 02:05:43,121 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:43,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:43,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1915733411, now seen corresponding path program 246 times [2021-05-22 02:05:43,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:43,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385743481] [2021-05-22 02:05:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:43,289 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 02:05:43,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:43,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385743481] [2021-05-22 02:05:43,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385743481] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:43,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:43,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:43,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302478326] [2021-05-22 02:05:43,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:43,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:43,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:43,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:43,290 INFO L87 Difference]: Start difference. First operand 13546 states and 71927 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:43,507 INFO L93 Difference]: Finished difference Result 32565 states and 163045 transitions. [2021-05-22 02:05:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:43,507 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:43,611 INFO L225 Difference]: With dead ends: 32565 [2021-05-22 02:05:43,611 INFO L226 Difference]: Without dead ends: 31395 [2021-05-22 02:05:43,611 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:44,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31395 states. [2021-05-22 02:05:44,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31395 to 13270. [2021-05-22 02:05:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13270 states, 13269 states have (on average 5.328886879192102) internal successors, (70709), 13269 states have internal predecessors, (70709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13270 states to 13270 states and 70709 transitions. [2021-05-22 02:05:44,900 INFO L78 Accepts]: Start accepts. Automaton has 13270 states and 70709 transitions. Word has length 33 [2021-05-22 02:05:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:44,900 INFO L482 AbstractCegarLoop]: Abstraction has 13270 states and 70709 transitions. [2021-05-22 02:05:44,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 13270 states and 70709 transitions. [2021-05-22 02:05:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:44,928 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:44,929 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, 1, 1, 1, 1] [2021-05-22 02:05:44,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-05-22 02:05:44,929 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:44,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:44,929 INFO L82 PathProgramCache]: Analyzing trace with hash -272900963, now seen corresponding path program 247 times [2021-05-22 02:05:44,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:44,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611493916] [2021-05-22 02:05:44,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:45,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:45,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611493916] [2021-05-22 02:05:45,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611493916] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:45,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:45,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:45,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481328946] [2021-05-22 02:05:45,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:45,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:45,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:45,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:45,077 INFO L87 Difference]: Start difference. First operand 13270 states and 70709 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:45,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:45,324 INFO L93 Difference]: Finished difference Result 31942 states and 160367 transitions. [2021-05-22 02:05:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:45,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:45,668 INFO L225 Difference]: With dead ends: 31942 [2021-05-22 02:05:45,668 INFO L226 Difference]: Without dead ends: 31183 [2021-05-22 02:05:45,668 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:46,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31183 states. [2021-05-22 02:05:46,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31183 to 13450. [2021-05-22 02:05:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13450 states, 13449 states have (on average 5.319131533943044) internal successors, (71537), 13449 states have internal predecessors, (71537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13450 states to 13450 states and 71537 transitions. [2021-05-22 02:05:46,734 INFO L78 Accepts]: Start accepts. Automaton has 13450 states and 71537 transitions. Word has length 33 [2021-05-22 02:05:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:46,734 INFO L482 AbstractCegarLoop]: Abstraction has 13450 states and 71537 transitions. [2021-05-22 02:05:46,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 13450 states and 71537 transitions. [2021-05-22 02:05:46,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:46,765 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:46,765 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:46,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-05-22 02:05:46,765 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:46,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:46,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1119697925, now seen corresponding path program 248 times [2021-05-22 02:05:46,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:46,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876852239] [2021-05-22 02:05:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:46,905 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 02:05:46,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:46,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876852239] [2021-05-22 02:05:46,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876852239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:46,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:46,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:46,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418903414] [2021-05-22 02:05:46,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:46,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:46,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:46,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:46,906 INFO L87 Difference]: Start difference. First operand 13450 states and 71537 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:47,321 INFO L93 Difference]: Finished difference Result 31934 states and 160219 transitions. [2021-05-22 02:05:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:47,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:47,424 INFO L225 Difference]: With dead ends: 31934 [2021-05-22 02:05:47,424 INFO L226 Difference]: Without dead ends: 31063 [2021-05-22 02:05:47,424 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31063 states. [2021-05-22 02:05:48,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31063 to 13330. [2021-05-22 02:05:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13330 states, 13329 states have (on average 5.325605821892115) internal successors, (70985), 13329 states have internal predecessors, (70985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13330 states to 13330 states and 70985 transitions. [2021-05-22 02:05:48,491 INFO L78 Accepts]: Start accepts. Automaton has 13330 states and 70985 transitions. Word has length 33 [2021-05-22 02:05:48,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:48,491 INFO L482 AbstractCegarLoop]: Abstraction has 13330 states and 70985 transitions. [2021-05-22 02:05:48,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:48,492 INFO L276 IsEmpty]: Start isEmpty. Operand 13330 states and 70985 transitions. [2021-05-22 02:05:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:48,667 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:48,667 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, 1, 1, 1, 1] [2021-05-22 02:05:48,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-05-22 02:05:48,667 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:48,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2131566907, now seen corresponding path program 249 times [2021-05-22 02:05:48,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:48,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651153130] [2021-05-22 02:05:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:48,808 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 02:05:48,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:48,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651153130] [2021-05-22 02:05:48,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651153130] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:48,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:48,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:48,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916862461] [2021-05-22 02:05:48,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:48,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:48,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:48,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:48,809 INFO L87 Difference]: Start difference. First operand 13330 states and 70985 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:49,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:49,044 INFO L93 Difference]: Finished difference Result 31960 states and 160368 transitions. [2021-05-22 02:05:49,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:49,045 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:49,149 INFO L225 Difference]: With dead ends: 31960 [2021-05-22 02:05:49,149 INFO L226 Difference]: Without dead ends: 31201 [2021-05-22 02:05:49,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:49,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31201 states. [2021-05-22 02:05:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31201 to 13454. [2021-05-22 02:05:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13454 states, 13453 states have (on average 5.313982011447261) internal successors, (71489), 13453 states have internal predecessors, (71489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13454 states to 13454 states and 71489 transitions. [2021-05-22 02:05:50,373 INFO L78 Accepts]: Start accepts. Automaton has 13454 states and 71489 transitions. Word has length 33 [2021-05-22 02:05:50,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:50,373 INFO L482 AbstractCegarLoop]: Abstraction has 13454 states and 71489 transitions. [2021-05-22 02:05:50,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 13454 states and 71489 transitions. [2021-05-22 02:05:50,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:50,400 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:50,400 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:50,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-05-22 02:05:50,400 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:50,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:50,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1737660101, now seen corresponding path program 250 times [2021-05-22 02:05:50,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:50,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738093601] [2021-05-22 02:05:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:50,538 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 02:05:50,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:50,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738093601] [2021-05-22 02:05:50,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738093601] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:50,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:50,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:50,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349557450] [2021-05-22 02:05:50,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:50,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:50,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:50,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:50,539 INFO L87 Difference]: Start difference. First operand 13454 states and 71489 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:50,781 INFO L93 Difference]: Finished difference Result 31966 states and 160261 transitions. [2021-05-22 02:05:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:50,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:50,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:50,881 INFO L225 Difference]: With dead ends: 31966 [2021-05-22 02:05:50,881 INFO L226 Difference]: Without dead ends: 31077 [2021-05-22 02:05:50,881 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31077 states. [2021-05-22 02:05:52,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31077 to 13330. [2021-05-22 02:05:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13330 states, 13329 states have (on average 5.321104358916648) internal successors, (70925), 13329 states have internal predecessors, (70925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13330 states to 13330 states and 70925 transitions. [2021-05-22 02:05:52,101 INFO L78 Accepts]: Start accepts. Automaton has 13330 states and 70925 transitions. Word has length 33 [2021-05-22 02:05:52,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:52,101 INFO L482 AbstractCegarLoop]: Abstraction has 13330 states and 70925 transitions. [2021-05-22 02:05:52,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:52,102 INFO L276 IsEmpty]: Start isEmpty. Operand 13330 states and 70925 transitions. [2021-05-22 02:05:52,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:52,129 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:52,129 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, 1, 1, 1, 1] [2021-05-22 02:05:52,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-05-22 02:05:52,129 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:52,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1274818841, now seen corresponding path program 251 times [2021-05-22 02:05:52,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:52,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570538340] [2021-05-22 02:05:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:52,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:52,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570538340] [2021-05-22 02:05:52,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570538340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:52,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:52,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:52,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607121808] [2021-05-22 02:05:52,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:52,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:52,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:52,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:52,281 INFO L87 Difference]: Start difference. First operand 13330 states and 70925 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:52,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:52,512 INFO L93 Difference]: Finished difference Result 31940 states and 160236 transitions. [2021-05-22 02:05:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:52,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:52,612 INFO L225 Difference]: With dead ends: 31940 [2021-05-22 02:05:52,613 INFO L226 Difference]: Without dead ends: 31189 [2021-05-22 02:05:52,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 179.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:53,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31189 states. [2021-05-22 02:05:53,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31189 to 13450. [2021-05-22 02:05:53,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13450 states, 13449 states have (on average 5.31020893746747) internal successors, (71417), 13449 states have internal predecessors, (71417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13450 states to 13450 states and 71417 transitions. [2021-05-22 02:05:53,909 INFO L78 Accepts]: Start accepts. Automaton has 13450 states and 71417 transitions. Word has length 33 [2021-05-22 02:05:53,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:53,909 INFO L482 AbstractCegarLoop]: Abstraction has 13450 states and 71417 transitions. [2021-05-22 02:05:53,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 13450 states and 71417 transitions. [2021-05-22 02:05:53,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:53,938 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:53,938 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:53,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-05-22 02:05:53,938 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:53,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:53,938 INFO L82 PathProgramCache]: Analyzing trace with hash -35762181, now seen corresponding path program 252 times [2021-05-22 02:05:53,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:53,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678176003] [2021-05-22 02:05:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:54,091 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 02:05:54,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:54,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678176003] [2021-05-22 02:05:54,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678176003] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:54,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:54,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:54,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262583248] [2021-05-22 02:05:54,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:54,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:54,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:54,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:54,092 INFO L87 Difference]: Start difference. First operand 13450 states and 71417 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:54,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:54,343 INFO L93 Difference]: Finished difference Result 31954 states and 160161 transitions. [2021-05-22 02:05:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:54,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:54,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:54,446 INFO L225 Difference]: With dead ends: 31954 [2021-05-22 02:05:54,446 INFO L226 Difference]: Without dead ends: 31009 [2021-05-22 02:05:54,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 179.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:55,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31009 states. [2021-05-22 02:05:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31009 to 13270. [2021-05-22 02:05:55,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13270 states, 13269 states have (on average 5.32662597030673) internal successors, (70679), 13269 states have internal predecessors, (70679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:55,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13270 states to 13270 states and 70679 transitions. [2021-05-22 02:05:55,744 INFO L78 Accepts]: Start accepts. Automaton has 13270 states and 70679 transitions. Word has length 33 [2021-05-22 02:05:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:55,744 INFO L482 AbstractCegarLoop]: Abstraction has 13270 states and 70679 transitions. [2021-05-22 02:05:55,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 13270 states and 70679 transitions. [2021-05-22 02:05:55,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:55,773 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:55,773 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, 1, 1, 1, 1] [2021-05-22 02:05:55,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-05-22 02:05:55,773 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:55,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:55,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1912748347, now seen corresponding path program 253 times [2021-05-22 02:05:55,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:55,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293798685] [2021-05-22 02:05:55,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:55,931 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 02:05:55,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:55,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293798685] [2021-05-22 02:05:55,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293798685] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:55,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:55,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:55,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660606612] [2021-05-22 02:05:55,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:55,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:55,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:55,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:55,932 INFO L87 Difference]: Start difference. First operand 13270 states and 70679 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:56,400 INFO L93 Difference]: Finished difference Result 32565 states and 163186 transitions. [2021-05-22 02:05:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:56,401 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:56,531 INFO L225 Difference]: With dead ends: 32565 [2021-05-22 02:05:56,532 INFO L226 Difference]: Without dead ends: 31806 [2021-05-22 02:05:56,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 184.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:57,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31806 states. [2021-05-22 02:05:57,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31806 to 13584. [2021-05-22 02:05:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13584 states, 13583 states have (on average 5.313111978208054) internal successors, (72168), 13583 states have internal predecessors, (72168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:57,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13584 states to 13584 states and 72168 transitions. [2021-05-22 02:05:57,624 INFO L78 Accepts]: Start accepts. Automaton has 13584 states and 72168 transitions. Word has length 33 [2021-05-22 02:05:57,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:57,624 INFO L482 AbstractCegarLoop]: Abstraction has 13584 states and 72168 transitions. [2021-05-22 02:05:57,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:57,624 INFO L276 IsEmpty]: Start isEmpty. Operand 13584 states and 72168 transitions. [2021-05-22 02:05:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:57,654 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:57,654 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, 1, 1, 1, 1] [2021-05-22 02:05:57,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-05-22 02:05:57,654 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:57,654 INFO L82 PathProgramCache]: Analyzing trace with hash 5861691, now seen corresponding path program 254 times [2021-05-22 02:05:57,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:57,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574635169] [2021-05-22 02:05:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:57,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:57,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574635169] [2021-05-22 02:05:57,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574635169] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:57,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:57,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:57,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559049955] [2021-05-22 02:05:57,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:57,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:57,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:57,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:57,811 INFO L87 Difference]: Start difference. First operand 13584 states and 72168 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:58,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:58,274 INFO L93 Difference]: Finished difference Result 32700 states and 163657 transitions. [2021-05-22 02:05:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:05:58,274 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:05:58,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:58,378 INFO L225 Difference]: With dead ends: 32700 [2021-05-22 02:05:58,378 INFO L226 Difference]: Without dead ends: 31618 [2021-05-22 02:05:58,378 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:05:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31618 states. [2021-05-22 02:05:59,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31618 to 13396. [2021-05-22 02:05:59,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13396 states, 13395 states have (on average 5.319148936170213) internal successors, (71250), 13395 states have internal predecessors, (71250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13396 states to 13396 states and 71250 transitions. [2021-05-22 02:05:59,739 INFO L78 Accepts]: Start accepts. Automaton has 13396 states and 71250 transitions. Word has length 33 [2021-05-22 02:05:59,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:59,740 INFO L482 AbstractCegarLoop]: Abstraction has 13396 states and 71250 transitions. [2021-05-22 02:05:59,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13396 states and 71250 transitions. [2021-05-22 02:05:59,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:05:59,769 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:59,769 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, 1, 1, 1, 1] [2021-05-22 02:05:59,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-05-22 02:05:59,769 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:59,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:59,770 INFO L82 PathProgramCache]: Analyzing trace with hash -672617187, now seen corresponding path program 255 times [2021-05-22 02:05:59,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:59,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053096175] [2021-05-22 02:05:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:59,933 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 02:05:59,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:59,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053096175] [2021-05-22 02:05:59,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053096175] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:59,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:59,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:05:59,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697879055] [2021-05-22 02:05:59,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:05:59,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:59,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:05:59,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:59,934 INFO L87 Difference]: Start difference. First operand 13396 states and 71250 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:00,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:00,155 INFO L93 Difference]: Finished difference Result 32372 states and 162194 transitions. [2021-05-22 02:06:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:00,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:00,260 INFO L225 Difference]: With dead ends: 32372 [2021-05-22 02:06:00,260 INFO L226 Difference]: Without dead ends: 31613 [2021-05-22 02:06:00,261 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 190.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31613 states. [2021-05-22 02:06:01,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31613 to 13520. [2021-05-22 02:06:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13520 states, 13519 states have (on average 5.307641097714328) internal successors, (71754), 13519 states have internal predecessors, (71754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13520 states to 13520 states and 71754 transitions. [2021-05-22 02:06:01,539 INFO L78 Accepts]: Start accepts. Automaton has 13520 states and 71754 transitions. Word has length 33 [2021-05-22 02:06:01,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:01,539 INFO L482 AbstractCegarLoop]: Abstraction has 13520 states and 71754 transitions. [2021-05-22 02:06:01,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 13520 states and 71754 transitions. [2021-05-22 02:06:01,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:01,567 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:01,567 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:01,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-05-22 02:06:01,567 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:01,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2020053307, now seen corresponding path program 256 times [2021-05-22 02:06:01,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:01,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922833778] [2021-05-22 02:06:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:01,704 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 02:06:01,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:01,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922833778] [2021-05-22 02:06:01,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922833778] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:01,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:01,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:01,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443733910] [2021-05-22 02:06:01,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:01,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:01,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:01,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:01,705 INFO L87 Difference]: Start difference. First operand 13520 states and 71754 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:01,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:01,928 INFO L93 Difference]: Finished difference Result 32378 states and 162087 transitions. [2021-05-22 02:06:01,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:01,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:02,027 INFO L225 Difference]: With dead ends: 32378 [2021-05-22 02:06:02,027 INFO L226 Difference]: Without dead ends: 31489 [2021-05-22 02:06:02,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31489 states. [2021-05-22 02:06:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31489 to 13396. [2021-05-22 02:06:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13396 states, 13395 states have (on average 5.314520343411721) internal successors, (71188), 13395 states have internal predecessors, (71188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13396 states to 13396 states and 71188 transitions. [2021-05-22 02:06:03,294 INFO L78 Accepts]: Start accepts. Automaton has 13396 states and 71188 transitions. Word has length 33 [2021-05-22 02:06:03,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:03,294 INFO L482 AbstractCegarLoop]: Abstraction has 13396 states and 71188 transitions. [2021-05-22 02:06:03,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 13396 states and 71188 transitions. [2021-05-22 02:06:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:03,322 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:03,322 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, 1, 1, 1, 1] [2021-05-22 02:06:03,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-05-22 02:06:03,322 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:03,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:03,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1120385339, now seen corresponding path program 257 times [2021-05-22 02:06:03,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:03,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492257257] [2021-05-22 02:06:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:03,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:03,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492257257] [2021-05-22 02:06:03,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492257257] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:03,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:03,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:03,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976573519] [2021-05-22 02:06:03,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:03,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:03,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:03,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:03,463 INFO L87 Difference]: Start difference. First operand 13396 states and 71188 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:03,709 INFO L93 Difference]: Finished difference Result 32773 states and 163908 transitions. [2021-05-22 02:06:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:03,709 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:03,838 INFO L225 Difference]: With dead ends: 32773 [2021-05-22 02:06:03,838 INFO L226 Difference]: Without dead ends: 31879 [2021-05-22 02:06:03,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 149.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31879 states. [2021-05-22 02:06:05,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31879 to 13651. [2021-05-22 02:06:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13651 states, 13650 states have (on average 5.29018315018315) internal successors, (72211), 13650 states have internal predecessors, (72211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13651 states to 13651 states and 72211 transitions. [2021-05-22 02:06:05,213 INFO L78 Accepts]: Start accepts. Automaton has 13651 states and 72211 transitions. Word has length 33 [2021-05-22 02:06:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:05,213 INFO L482 AbstractCegarLoop]: Abstraction has 13651 states and 72211 transitions. [2021-05-22 02:06:05,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 13651 states and 72211 transitions. [2021-05-22 02:06:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:05,241 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:05,241 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, 1, 1, 1, 1] [2021-05-22 02:06:05,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-05-22 02:06:05,241 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:05,241 INFO L82 PathProgramCache]: Analyzing trace with hash 639483293, now seen corresponding path program 258 times [2021-05-22 02:06:05,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:05,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502426409] [2021-05-22 02:06:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:05,377 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 02:06:05,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:05,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502426409] [2021-05-22 02:06:05,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502426409] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:05,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:05,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:05,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178685531] [2021-05-22 02:06:05,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:05,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:05,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:05,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:05,377 INFO L87 Difference]: Start difference. First operand 13651 states and 72211 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:05,617 INFO L93 Difference]: Finished difference Result 32644 states and 163139 transitions. [2021-05-22 02:06:05,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:05,617 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:05,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:05,720 INFO L225 Difference]: With dead ends: 32644 [2021-05-22 02:06:05,720 INFO L226 Difference]: Without dead ends: 31498 [2021-05-22 02:06:05,720 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:06,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31498 states. [2021-05-22 02:06:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31498 to 13270. [2021-05-22 02:06:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13270 states, 13269 states have (on average 5.321953425276961) internal successors, (70617), 13269 states have internal predecessors, (70617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13270 states to 13270 states and 70617 transitions. [2021-05-22 02:06:07,054 INFO L78 Accepts]: Start accepts. Automaton has 13270 states and 70617 transitions. Word has length 33 [2021-05-22 02:06:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:07,054 INFO L482 AbstractCegarLoop]: Abstraction has 13270 states and 70617 transitions. [2021-05-22 02:06:07,054 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 13270 states and 70617 transitions. [2021-05-22 02:06:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:07,083 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:07,083 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:07,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-05-22 02:06:07,083 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:07,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:07,083 INFO L82 PathProgramCache]: Analyzing trace with hash 82923929, now seen corresponding path program 259 times [2021-05-22 02:06:07,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:07,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335670713] [2021-05-22 02:06:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:07,249 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 02:06:07,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:07,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335670713] [2021-05-22 02:06:07,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335670713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:07,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:07,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:07,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910285514] [2021-05-22 02:06:07,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:07,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:07,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:07,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:07,250 INFO L87 Difference]: Start difference. First operand 13270 states and 70617 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:07,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:07,687 INFO L93 Difference]: Finished difference Result 32527 states and 162983 transitions. [2021-05-22 02:06:07,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:07,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:07,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:07,795 INFO L225 Difference]: With dead ends: 32527 [2021-05-22 02:06:07,795 INFO L226 Difference]: Without dead ends: 31776 [2021-05-22 02:06:07,795 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 193.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31776 states. [2021-05-22 02:06:08,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31776 to 13578. [2021-05-22 02:06:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13578 states, 13577 states have (on average 5.309346689253886) internal successors, (72085), 13577 states have internal predecessors, (72085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13578 states to 13578 states and 72085 transitions. [2021-05-22 02:06:08,864 INFO L78 Accepts]: Start accepts. Automaton has 13578 states and 72085 transitions. Word has length 33 [2021-05-22 02:06:08,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:08,864 INFO L482 AbstractCegarLoop]: Abstraction has 13578 states and 72085 transitions. [2021-05-22 02:06:08,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:08,865 INFO L276 IsEmpty]: Start isEmpty. Operand 13578 states and 72085 transitions. [2021-05-22 02:06:08,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:08,893 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:08,893 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, 1, 1, 1, 1] [2021-05-22 02:06:08,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-05-22 02:06:08,893 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:08,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:08,893 INFO L82 PathProgramCache]: Analyzing trace with hash -534599429, now seen corresponding path program 260 times [2021-05-22 02:06:08,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:08,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499335537] [2021-05-22 02:06:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:09,210 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 02:06:09,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:09,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499335537] [2021-05-22 02:06:09,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499335537] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:09,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:09,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:09,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692298112] [2021-05-22 02:06:09,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:09,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:09,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:09,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:09,211 INFO L87 Difference]: Start difference. First operand 13578 states and 72085 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:09,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:09,414 INFO L93 Difference]: Finished difference Result 32670 states and 163486 transitions. [2021-05-22 02:06:09,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:09,414 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:09,517 INFO L225 Difference]: With dead ends: 32670 [2021-05-22 02:06:09,517 INFO L226 Difference]: Without dead ends: 31592 [2021-05-22 02:06:09,517 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 323.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:10,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31592 states. [2021-05-22 02:06:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31592 to 13394. [2021-05-22 02:06:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13394 states, 13393 states have (on average 5.314791308892705) internal successors, (71181), 13393 states have internal predecessors, (71181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13394 states to 13394 states and 71181 transitions. [2021-05-22 02:06:10,749 INFO L78 Accepts]: Start accepts. Automaton has 13394 states and 71181 transitions. Word has length 33 [2021-05-22 02:06:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:10,749 INFO L482 AbstractCegarLoop]: Abstraction has 13394 states and 71181 transitions. [2021-05-22 02:06:10,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 13394 states and 71181 transitions. [2021-05-22 02:06:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:10,777 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:10,777 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:10,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-05-22 02:06:10,777 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:10,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1792525691, now seen corresponding path program 261 times [2021-05-22 02:06:10,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:10,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001465970] [2021-05-22 02:06:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:10,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:10,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001465970] [2021-05-22 02:06:10,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001465970] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:10,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:10,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:10,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778689994] [2021-05-22 02:06:10,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:10,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:10,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:10,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:10,941 INFO L87 Difference]: Start difference. First operand 13394 states and 71181 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:11,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:11,180 INFO L93 Difference]: Finished difference Result 32334 states and 161993 transitions. [2021-05-22 02:06:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:11,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:11,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:11,285 INFO L225 Difference]: With dead ends: 32334 [2021-05-22 02:06:11,285 INFO L226 Difference]: Without dead ends: 31583 [2021-05-22 02:06:11,285 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 190.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:11,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31583 states. [2021-05-22 02:06:12,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31583 to 13514. [2021-05-22 02:06:12,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13514 states, 13513 states have (on average 5.304003552134981) internal successors, (71673), 13513 states have internal predecessors, (71673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:12,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13514 states to 13514 states and 71673 transitions. [2021-05-22 02:06:12,540 INFO L78 Accepts]: Start accepts. Automaton has 13514 states and 71673 transitions. Word has length 33 [2021-05-22 02:06:12,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:12,540 INFO L482 AbstractCegarLoop]: Abstraction has 13514 states and 71673 transitions. [2021-05-22 02:06:12,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:12,540 INFO L276 IsEmpty]: Start isEmpty. Operand 13514 states and 71673 transitions. [2021-05-22 02:06:12,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:12,570 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:12,570 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, 1, 1, 1, 1] [2021-05-22 02:06:12,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-05-22 02:06:12,570 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:12,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1546092421, now seen corresponding path program 262 times [2021-05-22 02:06:12,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:12,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536809118] [2021-05-22 02:06:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:12,735 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 02:06:12,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:12,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536809118] [2021-05-22 02:06:12,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536809118] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:12,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:12,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:12,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572035364] [2021-05-22 02:06:12,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:12,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:12,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:12,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:12,736 INFO L87 Difference]: Start difference. First operand 13514 states and 71673 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:12,981 INFO L93 Difference]: Finished difference Result 32348 states and 161918 transitions. [2021-05-22 02:06:12,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:12,982 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:13,093 INFO L225 Difference]: With dead ends: 32348 [2021-05-22 02:06:13,093 INFO L226 Difference]: Without dead ends: 31463 [2021-05-22 02:06:13,093 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 191.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31463 states. [2021-05-22 02:06:14,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31463 to 13394. [2021-05-22 02:06:14,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13394 states, 13393 states have (on average 5.310311356678862) internal successors, (71121), 13393 states have internal predecessors, (71121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13394 states to 13394 states and 71121 transitions. [2021-05-22 02:06:14,455 INFO L78 Accepts]: Start accepts. Automaton has 13394 states and 71121 transitions. Word has length 33 [2021-05-22 02:06:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:14,455 INFO L482 AbstractCegarLoop]: Abstraction has 13394 states and 71121 transitions. [2021-05-22 02:06:14,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 13394 states and 71121 transitions. [2021-05-22 02:06:14,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:14,484 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:14,484 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, 1, 1, 1, 1] [2021-05-22 02:06:14,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-05-22 02:06:14,484 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:14,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1577543843, now seen corresponding path program 263 times [2021-05-22 02:06:14,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:14,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428709955] [2021-05-22 02:06:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:14,637 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 02:06:14,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:14,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428709955] [2021-05-22 02:06:14,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428709955] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:14,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:14,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:14,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850326777] [2021-05-22 02:06:14,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:14,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:14,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:14,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:14,638 INFO L87 Difference]: Start difference. First operand 13394 states and 71121 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:14,875 INFO L93 Difference]: Finished difference Result 32755 states and 163781 transitions. [2021-05-22 02:06:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:14,977 INFO L225 Difference]: With dead ends: 32755 [2021-05-22 02:06:14,977 INFO L226 Difference]: Without dead ends: 31861 [2021-05-22 02:06:14,977 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 159.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:16,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31861 states. [2021-05-22 02:06:16,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31861 to 13649. [2021-05-22 02:06:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13649 states, 13648 states have (on average 5.286049237983588) internal successors, (72144), 13648 states have internal predecessors, (72144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13649 states to 13649 states and 72144 transitions. [2021-05-22 02:06:16,369 INFO L78 Accepts]: Start accepts. Automaton has 13649 states and 72144 transitions. Word has length 33 [2021-05-22 02:06:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:16,369 INFO L482 AbstractCegarLoop]: Abstraction has 13649 states and 72144 transitions. [2021-05-22 02:06:16,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 13649 states and 72144 transitions. [2021-05-22 02:06:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:16,396 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:16,396 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, 1, 1, 1, 1] [2021-05-22 02:06:16,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-05-22 02:06:16,396 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:16,396 INFO L82 PathProgramCache]: Analyzing trace with hash 694361915, now seen corresponding path program 264 times [2021-05-22 02:06:16,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:16,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858267488] [2021-05-22 02:06:16,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:16,545 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 02:06:16,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:16,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858267488] [2021-05-22 02:06:16,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858267488] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:16,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:16,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:16,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915899648] [2021-05-22 02:06:16,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:16,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:16,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:16,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:16,546 INFO L87 Difference]: Start difference. First operand 13649 states and 72144 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:16,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:16,999 INFO L93 Difference]: Finished difference Result 32626 states and 163012 transitions. [2021-05-22 02:06:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:16,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:17,118 INFO L225 Difference]: With dead ends: 32626 [2021-05-22 02:06:17,118 INFO L226 Difference]: Without dead ends: 31420 [2021-05-22 02:06:17,118 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:17,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31420 states. [2021-05-22 02:06:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31420 to 13208. [2021-05-22 02:06:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13208 states, 13207 states have (on average 5.327856439766791) internal successors, (70365), 13207 states have internal predecessors, (70365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 70365 transitions. [2021-05-22 02:06:18,170 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 70365 transitions. Word has length 33 [2021-05-22 02:06:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:18,170 INFO L482 AbstractCegarLoop]: Abstraction has 13208 states and 70365 transitions. [2021-05-22 02:06:18,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 70365 transitions. [2021-05-22 02:06:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:18,199 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:18,199 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, 1, 1, 1, 1] [2021-05-22 02:06:18,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-05-22 02:06:18,199 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:18,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:18,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1776528261, now seen corresponding path program 265 times [2021-05-22 02:06:18,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:18,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463530749] [2021-05-22 02:06:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:18,364 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 02:06:18,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:18,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463530749] [2021-05-22 02:06:18,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463530749] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:18,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:18,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:18,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733436893] [2021-05-22 02:06:18,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:18,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:18,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:18,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:18,365 INFO L87 Difference]: Start difference. First operand 13208 states and 70365 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:18,736 INFO L93 Difference]: Finished difference Result 32084 states and 161144 transitions. [2021-05-22 02:06:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:18,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:18,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:18,839 INFO L225 Difference]: With dead ends: 32084 [2021-05-22 02:06:18,839 INFO L226 Difference]: Without dead ends: 31325 [2021-05-22 02:06:18,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 189.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31325 states. [2021-05-22 02:06:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31325 to 13466. [2021-05-22 02:06:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13466 states, 13465 states have (on average 5.321054585963609) internal successors, (71648), 13465 states have internal predecessors, (71648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 71648 transitions. [2021-05-22 02:06:20,127 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 71648 transitions. Word has length 33 [2021-05-22 02:06:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:20,128 INFO L482 AbstractCegarLoop]: Abstraction has 13466 states and 71648 transitions. [2021-05-22 02:06:20,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 71648 transitions. [2021-05-22 02:06:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:20,157 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:20,157 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, 1, 1, 1, 1] [2021-05-22 02:06:20,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-05-22 02:06:20,157 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:20,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:20,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1671642073, now seen corresponding path program 266 times [2021-05-22 02:06:20,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:20,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560502546] [2021-05-22 02:06:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:20,307 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 02:06:20,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:20,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560502546] [2021-05-22 02:06:20,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560502546] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:20,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:20,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:20,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209393213] [2021-05-22 02:06:20,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:20,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:20,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:20,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:20,308 INFO L87 Difference]: Start difference. First operand 13466 states and 71648 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:20,532 INFO L93 Difference]: Finished difference Result 32076 states and 160996 transitions. [2021-05-22 02:06:20,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:20,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:20,632 INFO L225 Difference]: With dead ends: 32076 [2021-05-22 02:06:20,632 INFO L226 Difference]: Without dead ends: 31205 [2021-05-22 02:06:20,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:21,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31205 states. [2021-05-22 02:06:21,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31205 to 13346. [2021-05-22 02:06:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13346 states, 13345 states have (on average 5.3275384038965905) internal successors, (71096), 13345 states have internal predecessors, (71096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 71096 transitions. [2021-05-22 02:06:21,908 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 71096 transitions. Word has length 33 [2021-05-22 02:06:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:21,909 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 71096 transitions. [2021-05-22 02:06:21,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 71096 transitions. [2021-05-22 02:06:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:21,937 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:21,937 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, 1, 1, 1, 1] [2021-05-22 02:06:21,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-05-22 02:06:21,937 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:21,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:21,938 INFO L82 PathProgramCache]: Analyzing trace with hash -25133957, now seen corresponding path program 267 times [2021-05-22 02:06:21,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:21,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442735929] [2021-05-22 02:06:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:22,103 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 02:06:22,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:22,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442735929] [2021-05-22 02:06:22,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442735929] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:22,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:22,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:22,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856771773] [2021-05-22 02:06:22,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:22,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:22,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:22,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:22,104 INFO L87 Difference]: Start difference. First operand 13346 states and 71096 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:22,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:22,364 INFO L93 Difference]: Finished difference Result 32295 states and 162043 transitions. [2021-05-22 02:06:22,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:22,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:22,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:22,470 INFO L225 Difference]: With dead ends: 32295 [2021-05-22 02:06:22,470 INFO L226 Difference]: Without dead ends: 31536 [2021-05-22 02:06:22,470 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 192.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:23,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31536 states. [2021-05-22 02:06:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31536 to 13534. [2021-05-22 02:06:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13534 states, 13533 states have (on average 5.314416611246583) internal successors, (71920), 13533 states have internal predecessors, (71920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13534 states to 13534 states and 71920 transitions. [2021-05-22 02:06:23,739 INFO L78 Accepts]: Start accepts. Automaton has 13534 states and 71920 transitions. Word has length 33 [2021-05-22 02:06:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:23,739 INFO L482 AbstractCegarLoop]: Abstraction has 13534 states and 71920 transitions. [2021-05-22 02:06:23,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13534 states and 71920 transitions. [2021-05-22 02:06:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:23,768 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:23,768 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, 1, 1, 1, 1] [2021-05-22 02:06:23,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-05-22 02:06:23,768 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:23,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:23,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1932020613, now seen corresponding path program 268 times [2021-05-22 02:06:23,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:23,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38616432] [2021-05-22 02:06:23,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:23,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:23,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38616432] [2021-05-22 02:06:23,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38616432] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:23,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:23,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:23,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584643133] [2021-05-22 02:06:23,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:23,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:23,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:23,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:23,939 INFO L87 Difference]: Start difference. First operand 13534 states and 71920 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:24,149 INFO L93 Difference]: Finished difference Result 32430 states and 162514 transitions. [2021-05-22 02:06:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:24,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:24,245 INFO L225 Difference]: With dead ends: 32430 [2021-05-22 02:06:24,245 INFO L226 Difference]: Without dead ends: 31348 [2021-05-22 02:06:24,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:25,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31348 states. [2021-05-22 02:06:25,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31348 to 13346. [2021-05-22 02:06:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13346 states, 13345 states have (on average 5.320644436118396) internal successors, (71004), 13345 states have internal predecessors, (71004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 71004 transitions. [2021-05-22 02:06:25,522 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 71004 transitions. Word has length 33 [2021-05-22 02:06:25,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:25,522 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 71004 transitions. [2021-05-22 02:06:25,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 71004 transitions. [2021-05-22 02:06:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:25,550 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:25,550 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:25,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-05-22 02:06:25,550 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:25,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:25,551 INFO L82 PathProgramCache]: Analyzing trace with hash -881882023, now seen corresponding path program 269 times [2021-05-22 02:06:25,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:25,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328383562] [2021-05-22 02:06:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:25,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:25,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328383562] [2021-05-22 02:06:25,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328383562] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:25,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:25,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:25,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584646370] [2021-05-22 02:06:25,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:25,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:25,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:25,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:25,717 INFO L87 Difference]: Start difference. First operand 13346 states and 71004 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:25,959 INFO L93 Difference]: Finished difference Result 32275 states and 161879 transitions. [2021-05-22 02:06:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:25,959 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:26,057 INFO L225 Difference]: With dead ends: 32275 [2021-05-22 02:06:26,058 INFO L226 Difference]: Without dead ends: 31524 [2021-05-22 02:06:26,058 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 192.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31524 states. [2021-05-22 02:06:27,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31524 to 13530. [2021-05-22 02:06:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13530 states, 13529 states have (on average 5.308300687412226) internal successors, (71816), 13529 states have internal predecessors, (71816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13530 states to 13530 states and 71816 transitions. [2021-05-22 02:06:27,347 INFO L78 Accepts]: Start accepts. Automaton has 13530 states and 71816 transitions. Word has length 33 [2021-05-22 02:06:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:27,347 INFO L482 AbstractCegarLoop]: Abstraction has 13530 states and 71816 transitions. [2021-05-22 02:06:27,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 13530 states and 71816 transitions. [2021-05-22 02:06:27,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:27,374 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:27,374 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, 1, 1, 1, 1] [2021-05-22 02:06:27,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-05-22 02:06:27,374 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:27,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:27,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1499405381, now seen corresponding path program 270 times [2021-05-22 02:06:27,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:27,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843813010] [2021-05-22 02:06:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:27,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:27,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843813010] [2021-05-22 02:06:27,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843813010] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:27,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:27,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:27,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570505748] [2021-05-22 02:06:27,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:27,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:27,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:27,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:27,543 INFO L87 Difference]: Start difference. First operand 13530 states and 71816 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:27,924 INFO L93 Difference]: Finished difference Result 32418 states and 162382 transitions. [2021-05-22 02:06:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:27,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:28,028 INFO L225 Difference]: With dead ends: 32418 [2021-05-22 02:06:28,028 INFO L226 Difference]: Without dead ends: 31248 [2021-05-22 02:06:28,028 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31248 states. [2021-05-22 02:06:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31248 to 13254. [2021-05-22 02:06:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13254 states, 13253 states have (on average 5.32694484267713) internal successors, (70598), 13253 states have internal predecessors, (70598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13254 states to 13254 states and 70598 transitions. [2021-05-22 02:06:29,089 INFO L78 Accepts]: Start accepts. Automaton has 13254 states and 70598 transitions. Word has length 33 [2021-05-22 02:06:29,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:29,089 INFO L482 AbstractCegarLoop]: Abstraction has 13254 states and 70598 transitions. [2021-05-22 02:06:29,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 13254 states and 70598 transitions. [2021-05-22 02:06:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:29,114 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:29,115 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, 1, 1, 1, 1] [2021-05-22 02:06:29,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-05-22 02:06:29,115 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:29,115 INFO L82 PathProgramCache]: Analyzing trace with hash -343819107, now seen corresponding path program 271 times [2021-05-22 02:06:29,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:29,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884693824] [2021-05-22 02:06:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:29,388 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 02:06:29,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:29,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884693824] [2021-05-22 02:06:29,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884693824] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:29,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:29,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:29,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093581121] [2021-05-22 02:06:29,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:29,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:29,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:29,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:29,389 INFO L87 Difference]: Start difference. First operand 13254 states and 70598 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:29,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:29,637 INFO L93 Difference]: Finished difference Result 31793 states and 159699 transitions. [2021-05-22 02:06:29,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:29,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:29,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:29,741 INFO L225 Difference]: With dead ends: 31793 [2021-05-22 02:06:29,741 INFO L226 Difference]: Without dead ends: 31034 [2021-05-22 02:06:29,741 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31034 states. [2021-05-22 02:06:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31034 to 13434. [2021-05-22 02:06:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13434 states, 13433 states have (on average 5.3172039008412115) internal successors, (71426), 13433 states have internal predecessors, (71426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13434 states to 13434 states and 71426 transitions. [2021-05-22 02:06:30,975 INFO L78 Accepts]: Start accepts. Automaton has 13434 states and 71426 transitions. Word has length 33 [2021-05-22 02:06:30,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:30,975 INFO L482 AbstractCegarLoop]: Abstraction has 13434 states and 71426 transitions. [2021-05-22 02:06:30,975 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 13434 states and 71426 transitions. [2021-05-22 02:06:31,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:31,003 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:31,003 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, 1, 1, 1, 1] [2021-05-22 02:06:31,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-05-22 02:06:31,003 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:31,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1190616069, now seen corresponding path program 272 times [2021-05-22 02:06:31,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:31,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166788278] [2021-05-22 02:06:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:31,140 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 02:06:31,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:31,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166788278] [2021-05-22 02:06:31,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166788278] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:31,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:31,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:31,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943701335] [2021-05-22 02:06:31,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:31,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:31,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:31,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:31,141 INFO L87 Difference]: Start difference. First operand 13434 states and 71426 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:31,399 INFO L93 Difference]: Finished difference Result 31785 states and 159551 transitions. [2021-05-22 02:06:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:31,399 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:31,494 INFO L225 Difference]: With dead ends: 31785 [2021-05-22 02:06:31,494 INFO L226 Difference]: Without dead ends: 30914 [2021-05-22 02:06:31,494 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30914 states. [2021-05-22 02:06:32,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30914 to 13314. [2021-05-22 02:06:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13314 states, 13313 states have (on average 5.323668594606775) internal successors, (70874), 13313 states have internal predecessors, (70874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13314 states to 13314 states and 70874 transitions. [2021-05-22 02:06:32,691 INFO L78 Accepts]: Start accepts. Automaton has 13314 states and 70874 transitions. Word has length 33 [2021-05-22 02:06:32,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:32,691 INFO L482 AbstractCegarLoop]: Abstraction has 13314 states and 70874 transitions. [2021-05-22 02:06:32,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:32,691 INFO L276 IsEmpty]: Start isEmpty. Operand 13314 states and 70874 transitions. [2021-05-22 02:06:32,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:32,719 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:32,719 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, 1, 1, 1, 1] [2021-05-22 02:06:32,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-05-22 02:06:32,719 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:32,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:32,719 INFO L82 PathProgramCache]: Analyzing trace with hash 769137083, now seen corresponding path program 273 times [2021-05-22 02:06:32,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:32,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635184169] [2021-05-22 02:06:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:32,855 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 02:06:32,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:32,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635184169] [2021-05-22 02:06:32,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635184169] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:32,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:32,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:32,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169009386] [2021-05-22 02:06:32,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:32,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:32,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:32,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:32,856 INFO L87 Difference]: Start difference. First operand 13314 states and 70874 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:33,079 INFO L93 Difference]: Finished difference Result 31809 states and 159695 transitions. [2021-05-22 02:06:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:33,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:33,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:33,174 INFO L225 Difference]: With dead ends: 31809 [2021-05-22 02:06:33,174 INFO L226 Difference]: Without dead ends: 31050 [2021-05-22 02:06:33,174 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:34,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31050 states. [2021-05-22 02:06:34,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31050 to 13438. [2021-05-22 02:06:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13438 states, 13437 states have (on average 5.312048820421225) internal successors, (71378), 13437 states have internal predecessors, (71378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13438 states to 13438 states and 71378 transitions. [2021-05-22 02:06:34,427 INFO L78 Accepts]: Start accepts. Automaton has 13438 states and 71378 transitions. Word has length 33 [2021-05-22 02:06:34,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:34,427 INFO L482 AbstractCegarLoop]: Abstraction has 13438 states and 71378 transitions. [2021-05-22 02:06:34,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:34,427 INFO L276 IsEmpty]: Start isEmpty. Operand 13438 states and 71378 transitions. [2021-05-22 02:06:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:34,455 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:34,455 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, 1, 1, 1, 1] [2021-05-22 02:06:34,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-05-22 02:06:34,455 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:34,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:34,455 INFO L82 PathProgramCache]: Analyzing trace with hash -767462981, now seen corresponding path program 274 times [2021-05-22 02:06:34,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:34,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399029528] [2021-05-22 02:06:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:34,608 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 02:06:34,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:34,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399029528] [2021-05-22 02:06:34,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399029528] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:34,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:34,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:34,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989009215] [2021-05-22 02:06:34,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:34,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:34,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:34,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:34,609 INFO L87 Difference]: Start difference. First operand 13438 states and 71378 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:34,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:34,830 INFO L93 Difference]: Finished difference Result 31813 states and 159583 transitions. [2021-05-22 02:06:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:34,830 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:34,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:34,923 INFO L225 Difference]: With dead ends: 31813 [2021-05-22 02:06:34,923 INFO L226 Difference]: Without dead ends: 30926 [2021-05-22 02:06:34,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:36,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30926 states. [2021-05-22 02:06:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30926 to 13314. [2021-05-22 02:06:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13314 states, 13313 states have (on average 5.319161721625479) internal successors, (70814), 13313 states have internal predecessors, (70814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13314 states to 13314 states and 70814 transitions. [2021-05-22 02:06:36,564 INFO L78 Accepts]: Start accepts. Automaton has 13314 states and 70814 transitions. Word has length 33 [2021-05-22 02:06:36,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:36,564 INFO L482 AbstractCegarLoop]: Abstraction has 13314 states and 70814 transitions. [2021-05-22 02:06:36,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 13314 states and 70814 transitions. [2021-05-22 02:06:36,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:36,590 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:36,590 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, 1, 1, 1, 1] [2021-05-22 02:06:36,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-05-22 02:06:36,590 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:36,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:36,591 INFO L82 PathProgramCache]: Analyzing trace with hash -87610983, now seen corresponding path program 275 times [2021-05-22 02:06:36,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:36,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346855060] [2021-05-22 02:06:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:36,728 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 02:06:36,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:36,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346855060] [2021-05-22 02:06:36,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346855060] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:36,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:36,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:36,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391134195] [2021-05-22 02:06:36,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:36,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:36,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:36,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:36,729 INFO L87 Difference]: Start difference. First operand 13314 states and 70814 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:36,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:36,967 INFO L93 Difference]: Finished difference Result 31789 states and 159563 transitions. [2021-05-22 02:06:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:36,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:37,325 INFO L225 Difference]: With dead ends: 31789 [2021-05-22 02:06:37,325 INFO L226 Difference]: Without dead ends: 31038 [2021-05-22 02:06:37,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31038 states. [2021-05-22 02:06:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31038 to 13434. [2021-05-22 02:06:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13434 states, 13433 states have (on average 5.30827067669173) internal successors, (71306), 13433 states have internal predecessors, (71306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13434 states to 13434 states and 71306 transitions. [2021-05-22 02:06:38,368 INFO L78 Accepts]: Start accepts. Automaton has 13434 states and 71306 transitions. Word has length 33 [2021-05-22 02:06:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:38,368 INFO L482 AbstractCegarLoop]: Abstraction has 13434 states and 71306 transitions. [2021-05-22 02:06:38,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 13434 states and 71306 transitions. [2021-05-22 02:06:38,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:38,396 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:38,396 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, 1, 1, 1, 1] [2021-05-22 02:06:38,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-05-22 02:06:38,396 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:38,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:38,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2091249669, now seen corresponding path program 276 times [2021-05-22 02:06:38,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:38,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552919904] [2021-05-22 02:06:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:38,541 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 02:06:38,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:38,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552919904] [2021-05-22 02:06:38,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552919904] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:38,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:38,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:38,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595527024] [2021-05-22 02:06:38,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:38,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:38,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:38,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:38,542 INFO L87 Difference]: Start difference. First operand 13434 states and 71306 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:38,992 INFO L93 Difference]: Finished difference Result 31801 states and 159483 transitions. [2021-05-22 02:06:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:38,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:39,094 INFO L225 Difference]: With dead ends: 31801 [2021-05-22 02:06:39,094 INFO L226 Difference]: Without dead ends: 30858 [2021-05-22 02:06:39,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 169.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30858 states. [2021-05-22 02:06:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30858 to 13254. [2021-05-22 02:06:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13254 states, 13253 states have (on average 5.32468120425564) internal successors, (70568), 13253 states have internal predecessors, (70568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13254 states to 13254 states and 70568 transitions. [2021-05-22 02:06:40,148 INFO L78 Accepts]: Start accepts. Automaton has 13254 states and 70568 transitions. Word has length 33 [2021-05-22 02:06:40,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:40,148 INFO L482 AbstractCegarLoop]: Abstraction has 13254 states and 70568 transitions. [2021-05-22 02:06:40,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:40,149 INFO L276 IsEmpty]: Start isEmpty. Operand 13254 states and 70568 transitions. [2021-05-22 02:06:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:40,336 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:40,336 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:40,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-05-22 02:06:40,337 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash 868753851, now seen corresponding path program 277 times [2021-05-22 02:06:40,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:40,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777250287] [2021-05-22 02:06:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:40,497 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 02:06:40,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:40,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777250287] [2021-05-22 02:06:40,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777250287] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:40,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:40,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:40,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771884080] [2021-05-22 02:06:40,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:40,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:40,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:40,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:40,498 INFO L87 Difference]: Start difference. First operand 13254 states and 70568 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:40,735 INFO L93 Difference]: Finished difference Result 32319 states and 162115 transitions. [2021-05-22 02:06:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:40,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:40,837 INFO L225 Difference]: With dead ends: 32319 [2021-05-22 02:06:40,837 INFO L226 Difference]: Without dead ends: 31560 [2021-05-22 02:06:40,837 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 185.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:41,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31560 states. [2021-05-22 02:06:42,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31560 to 13536. [2021-05-22 02:06:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 5.313114148503879) internal successors, (71913), 13535 states have internal predecessors, (71913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:42,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 71913 transitions. [2021-05-22 02:06:42,086 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 71913 transitions. Word has length 33 [2021-05-22 02:06:42,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:42,086 INFO L482 AbstractCegarLoop]: Abstraction has 13536 states and 71913 transitions. [2021-05-22 02:06:42,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 71913 transitions. [2021-05-22 02:06:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:42,113 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:42,113 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, 1, 1, 1, 1] [2021-05-22 02:06:42,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-05-22 02:06:42,113 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:42,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:42,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1038132805, now seen corresponding path program 278 times [2021-05-22 02:06:42,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:42,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799751987] [2021-05-22 02:06:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:42,269 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 02:06:42,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:42,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799751987] [2021-05-22 02:06:42,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799751987] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:42,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:42,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:42,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795463472] [2021-05-22 02:06:42,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:42,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:42,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:42,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:42,270 INFO L87 Difference]: Start difference. First operand 13536 states and 71913 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:42,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:42,476 INFO L93 Difference]: Finished difference Result 32454 states and 162586 transitions. [2021-05-22 02:06:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:42,476 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:42,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:42,579 INFO L225 Difference]: With dead ends: 32454 [2021-05-22 02:06:42,579 INFO L226 Difference]: Without dead ends: 31372 [2021-05-22 02:06:42,579 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:43,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31372 states. [2021-05-22 02:06:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31372 to 13348. [2021-05-22 02:06:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13348 states, 13347 states have (on average 5.319172847830973) internal successors, (70995), 13347 states have internal predecessors, (70995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:43,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13348 states to 13348 states and 70995 transitions. [2021-05-22 02:06:43,819 INFO L78 Accepts]: Start accepts. Automaton has 13348 states and 70995 transitions. Word has length 33 [2021-05-22 02:06:43,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:43,819 INFO L482 AbstractCegarLoop]: Abstraction has 13348 states and 70995 transitions. [2021-05-22 02:06:43,820 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:43,820 INFO L276 IsEmpty]: Start isEmpty. Operand 13348 states and 70995 transitions. [2021-05-22 02:06:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:43,847 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:43,847 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, 1, 1, 1, 1] [2021-05-22 02:06:43,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-05-22 02:06:43,847 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:43,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:43,847 INFO L82 PathProgramCache]: Analyzing trace with hash -2025095907, now seen corresponding path program 279 times [2021-05-22 02:06:43,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:43,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965900595] [2021-05-22 02:06:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:43,986 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 02:06:43,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:43,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965900595] [2021-05-22 02:06:43,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965900595] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:43,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:43,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:43,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638812750] [2021-05-22 02:06:43,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:43,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:43,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:43,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:43,986 INFO L87 Difference]: Start difference. First operand 13348 states and 70995 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:44,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:44,217 INFO L93 Difference]: Finished difference Result 32124 states and 161118 transitions. [2021-05-22 02:06:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:44,217 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:44,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:44,313 INFO L225 Difference]: With dead ends: 32124 [2021-05-22 02:06:44,313 INFO L226 Difference]: Without dead ends: 31365 [2021-05-22 02:06:44,314 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31365 states. [2021-05-22 02:06:45,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31365 to 13472. [2021-05-22 02:06:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13472 states, 13471 states have (on average 5.307623784425804) internal successors, (71499), 13471 states have internal predecessors, (71499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13472 states to 13472 states and 71499 transitions. [2021-05-22 02:06:45,594 INFO L78 Accepts]: Start accepts. Automaton has 13472 states and 71499 transitions. Word has length 33 [2021-05-22 02:06:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:45,594 INFO L482 AbstractCegarLoop]: Abstraction has 13472 states and 71499 transitions. [2021-05-22 02:06:45,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:45,594 INFO L276 IsEmpty]: Start isEmpty. Operand 13472 states and 71499 transitions. [2021-05-22 02:06:45,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:45,621 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:45,621 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, 1, 1, 1, 1] [2021-05-22 02:06:45,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-05-22 02:06:45,621 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:45,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:45,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1304716869, now seen corresponding path program 280 times [2021-05-22 02:06:45,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:45,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843014874] [2021-05-22 02:06:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:45,759 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 02:06:45,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:45,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843014874] [2021-05-22 02:06:45,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843014874] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:45,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:45,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:45,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343716670] [2021-05-22 02:06:45,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:45,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:45,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:45,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:45,760 INFO L87 Difference]: Start difference. First operand 13472 states and 71499 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:45,994 INFO L93 Difference]: Finished difference Result 32128 states and 161006 transitions. [2021-05-22 02:06:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:45,994 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:46,098 INFO L225 Difference]: With dead ends: 32128 [2021-05-22 02:06:46,099 INFO L226 Difference]: Without dead ends: 31241 [2021-05-22 02:06:46,099 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31241 states. [2021-05-22 02:06:47,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31241 to 13348. [2021-05-22 02:06:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13348 states, 13347 states have (on average 5.314527609200569) internal successors, (70933), 13347 states have internal predecessors, (70933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13348 states to 13348 states and 70933 transitions. [2021-05-22 02:06:47,383 INFO L78 Accepts]: Start accepts. Automaton has 13348 states and 70933 transitions. Word has length 33 [2021-05-22 02:06:47,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:47,383 INFO L482 AbstractCegarLoop]: Abstraction has 13348 states and 70933 transitions. [2021-05-22 02:06:47,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 13348 states and 70933 transitions. [2021-05-22 02:06:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:47,410 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:47,410 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, 1, 1, 1, 1] [2021-05-22 02:06:47,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-05-22 02:06:47,410 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:47,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:47,410 INFO L82 PathProgramCache]: Analyzing trace with hash -242044485, now seen corresponding path program 281 times [2021-05-22 02:06:47,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:47,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877911913] [2021-05-22 02:06:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:47,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:47,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877911913] [2021-05-22 02:06:47,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877911913] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:47,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:47,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:47,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793911765] [2021-05-22 02:06:47,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:47,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:47,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:47,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:47,549 INFO L87 Difference]: Start difference. First operand 13348 states and 70933 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:48,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:48,021 INFO L93 Difference]: Finished difference Result 32460 states and 162573 transitions. [2021-05-22 02:06:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:48,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:48,134 INFO L225 Difference]: With dead ends: 32460 [2021-05-22 02:06:48,134 INFO L226 Difference]: Without dead ends: 31566 [2021-05-22 02:06:48,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 146.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:48,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31566 states. [2021-05-22 02:06:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31566 to 13538. [2021-05-22 02:06:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13538 states, 13537 states have (on average 5.296446775504173) internal successors, (71698), 13537 states have internal predecessors, (71698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13538 states to 13538 states and 71698 transitions. [2021-05-22 02:06:49,214 INFO L78 Accepts]: Start accepts. Automaton has 13538 states and 71698 transitions. Word has length 33 [2021-05-22 02:06:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:49,214 INFO L482 AbstractCegarLoop]: Abstraction has 13538 states and 71698 transitions. [2021-05-22 02:06:49,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 13538 states and 71698 transitions. [2021-05-22 02:06:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:49,240 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:49,240 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, 1, 1, 1, 1] [2021-05-22 02:06:49,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-05-22 02:06:49,240 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1416004195, now seen corresponding path program 282 times [2021-05-22 02:06:49,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:49,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423031504] [2021-05-22 02:06:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:49,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:49,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423031504] [2021-05-22 02:06:49,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423031504] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:49,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:49,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:49,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271231902] [2021-05-22 02:06:49,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:49,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:49,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:49,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:49,404 INFO L87 Difference]: Start difference. First operand 13538 states and 71698 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:49,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:49,814 INFO L93 Difference]: Finished difference Result 32329 states and 161800 transitions. [2021-05-22 02:06:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:49,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:49,915 INFO L225 Difference]: With dead ends: 32329 [2021-05-22 02:06:49,915 INFO L226 Difference]: Without dead ends: 31282 [2021-05-22 02:06:49,915 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 185.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:50,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31282 states. [2021-05-22 02:06:50,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31282 to 13254. [2021-05-22 02:06:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13254 states, 13253 states have (on average 5.321210292009356) internal successors, (70522), 13253 states have internal predecessors, (70522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:51,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13254 states to 13254 states and 70522 transitions. [2021-05-22 02:06:51,222 INFO L78 Accepts]: Start accepts. Automaton has 13254 states and 70522 transitions. Word has length 33 [2021-05-22 02:06:51,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:51,223 INFO L482 AbstractCegarLoop]: Abstraction has 13254 states and 70522 transitions. [2021-05-22 02:06:51,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand 13254 states and 70522 transitions. [2021-05-22 02:06:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:51,250 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:51,250 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, 1, 1, 1, 1] [2021-05-22 02:06:51,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-05-22 02:06:51,250 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:51,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:51,251 INFO L82 PathProgramCache]: Analyzing trace with hash -961070567, now seen corresponding path program 283 times [2021-05-22 02:06:51,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:51,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542483756] [2021-05-22 02:06:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:51,400 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 02:06:51,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:51,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542483756] [2021-05-22 02:06:51,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542483756] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:51,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:51,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:51,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934442777] [2021-05-22 02:06:51,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:51,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:51,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:51,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:51,401 INFO L87 Difference]: Start difference. First operand 13254 states and 70522 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:51,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:51,615 INFO L93 Difference]: Finished difference Result 32281 states and 161928 transitions. [2021-05-22 02:06:51,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:51,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:51,718 INFO L225 Difference]: With dead ends: 32281 [2021-05-22 02:06:51,718 INFO L226 Difference]: Without dead ends: 31530 [2021-05-22 02:06:51,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 178.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31530 states. [2021-05-22 02:06:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31530 to 13530. [2021-05-22 02:06:52,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13530 states, 13529 states have (on average 5.3105181462044495) internal successors, (71846), 13529 states have internal predecessors, (71846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13530 states to 13530 states and 71846 transitions. [2021-05-22 02:06:52,985 INFO L78 Accepts]: Start accepts. Automaton has 13530 states and 71846 transitions. Word has length 33 [2021-05-22 02:06:52,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:52,985 INFO L482 AbstractCegarLoop]: Abstraction has 13530 states and 71846 transitions. [2021-05-22 02:06:52,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:52,985 INFO L276 IsEmpty]: Start isEmpty. Operand 13530 states and 71846 transitions. [2021-05-22 02:06:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:53,013 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:53,013 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, 1, 1, 1, 1] [2021-05-22 02:06:53,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-05-22 02:06:53,013 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:53,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:53,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1578593925, now seen corresponding path program 284 times [2021-05-22 02:06:53,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:53,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740649938] [2021-05-22 02:06:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:53,163 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 02:06:53,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:53,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740649938] [2021-05-22 02:06:53,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740649938] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:53,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:53,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:53,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170213117] [2021-05-22 02:06:53,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:53,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:53,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:53,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:53,164 INFO L87 Difference]: Start difference. First operand 13530 states and 71846 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:53,368 INFO L93 Difference]: Finished difference Result 32424 states and 162431 transitions. [2021-05-22 02:06:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:53,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:53,466 INFO L225 Difference]: With dead ends: 32424 [2021-05-22 02:06:53,466 INFO L226 Difference]: Without dead ends: 31346 [2021-05-22 02:06:53,466 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 157.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31346 states. [2021-05-22 02:06:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31346 to 13346. [2021-05-22 02:06:54,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13346 states, 13345 states have (on average 5.315998501311353) internal successors, (70942), 13345 states have internal predecessors, (70942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 70942 transitions. [2021-05-22 02:06:54,794 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 70942 transitions. Word has length 33 [2021-05-22 02:06:54,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:54,794 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 70942 transitions. [2021-05-22 02:06:54,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:54,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 70942 transitions. [2021-05-22 02:06:54,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:54,820 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:54,820 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, 1, 1, 1, 1] [2021-05-22 02:06:54,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-05-22 02:06:54,820 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:54,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:54,820 INFO L82 PathProgramCache]: Analyzing trace with hash 440046971, now seen corresponding path program 285 times [2021-05-22 02:06:54,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:54,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574427706] [2021-05-22 02:06:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:54,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:54,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574427706] [2021-05-22 02:06:54,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574427706] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:54,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:54,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:54,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709851807] [2021-05-22 02:06:54,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:54,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:54,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:54,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:54,956 INFO L87 Difference]: Start difference. First operand 13346 states and 70942 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:55,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:55,194 INFO L93 Difference]: Finished difference Result 32086 states and 160933 transitions. [2021-05-22 02:06:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:55,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:55,293 INFO L225 Difference]: With dead ends: 32086 [2021-05-22 02:06:55,293 INFO L226 Difference]: Without dead ends: 31335 [2021-05-22 02:06:55,293 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:56,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31335 states. [2021-05-22 02:06:56,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31335 to 13466. [2021-05-22 02:06:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13466 states, 13465 states have (on average 5.305161529892313) internal successors, (71434), 13465 states have internal predecessors, (71434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 71434 transitions. [2021-05-22 02:06:56,636 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 71434 transitions. Word has length 33 [2021-05-22 02:06:56,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:56,636 INFO L482 AbstractCegarLoop]: Abstraction has 13466 states and 71434 transitions. [2021-05-22 02:06:56,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:56,636 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 71434 transitions. [2021-05-22 02:06:56,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:56,662 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:56,662 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, 1, 1, 1, 1] [2021-05-22 02:06:56,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-05-22 02:06:56,662 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:56,663 INFO L82 PathProgramCache]: Analyzing trace with hash 693387387, now seen corresponding path program 286 times [2021-05-22 02:06:56,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:56,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396403306] [2021-05-22 02:06:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:56,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:56,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396403306] [2021-05-22 02:06:56,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396403306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:56,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:56,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:56,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473531098] [2021-05-22 02:06:56,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:56,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:56,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:56,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:56,821 INFO L87 Difference]: Start difference. First operand 13466 states and 71434 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:57,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:57,050 INFO L93 Difference]: Finished difference Result 32098 states and 160853 transitions. [2021-05-22 02:06:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:57,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:57,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:57,154 INFO L225 Difference]: With dead ends: 32098 [2021-05-22 02:06:57,154 INFO L226 Difference]: Without dead ends: 31215 [2021-05-22 02:06:57,154 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:58,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31215 states. [2021-05-22 02:06:58,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31215 to 13346. [2021-05-22 02:06:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13346 states, 13345 states have (on average 5.311502435369052) internal successors, (70882), 13345 states have internal predecessors, (70882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 70882 transitions. [2021-05-22 02:06:58,462 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 70882 transitions. Word has length 33 [2021-05-22 02:06:58,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:58,462 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 70882 transitions. [2021-05-22 02:06:58,462 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:58,462 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 70882 transitions. [2021-05-22 02:06:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:06:58,490 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:58,490 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, 1, 1, 1, 1] [2021-05-22 02:06:58,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-05-22 02:06:58,490 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:58,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:58,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1364944733, now seen corresponding path program 287 times [2021-05-22 02:06:58,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:58,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81634659] [2021-05-22 02:06:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:58,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:58,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81634659] [2021-05-22 02:06:58,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81634659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:58,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:58,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:06:58,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500666670] [2021-05-22 02:06:58,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:06:58,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:58,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:06:58,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:58,631 INFO L87 Difference]: Start difference. First operand 13346 states and 70882 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:59,051 INFO L93 Difference]: Finished difference Result 32442 states and 162462 transitions. [2021-05-22 02:06:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:06:59,051 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:06:59,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:59,157 INFO L225 Difference]: With dead ends: 32442 [2021-05-22 02:06:59,158 INFO L226 Difference]: Without dead ends: 31548 [2021-05-22 02:06:59,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 147.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:06:59,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31548 states. [2021-05-22 02:07:00,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31548 to 13536. [2021-05-22 02:07:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 5.293461396379756) internal successors, (71647), 13535 states have internal predecessors, (71647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 71647 transitions. [2021-05-22 02:07:00,213 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 71647 transitions. Word has length 33 [2021-05-22 02:07:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:00,213 INFO L482 AbstractCegarLoop]: Abstraction has 13536 states and 71647 transitions. [2021-05-22 02:07:00,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 71647 transitions. [2021-05-22 02:07:00,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:00,239 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:00,239 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, 1, 1, 1, 1] [2021-05-22 02:07:00,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-05-22 02:07:00,240 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:00,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:00,240 INFO L82 PathProgramCache]: Analyzing trace with hash -668067909, now seen corresponding path program 288 times [2021-05-22 02:07:00,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:00,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623147394] [2021-05-22 02:07:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:00,494 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-22 02:07:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:00,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:00,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623147394] [2021-05-22 02:07:00,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623147394] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:00,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:00,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:00,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268094049] [2021-05-22 02:07:00,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:00,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:00,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:00,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:00,522 INFO L87 Difference]: Start difference. First operand 13536 states and 71647 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:00,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:00,756 INFO L93 Difference]: Finished difference Result 32311 states and 161689 transitions. [2021-05-22 02:07:00,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:00,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:00,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:00,856 INFO L225 Difference]: With dead ends: 32311 [2021-05-22 02:07:00,857 INFO L226 Difference]: Without dead ends: 31220 [2021-05-22 02:07:00,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 308.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:01,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31220 states. [2021-05-22 02:07:01,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31220 to 13208. [2021-05-22 02:07:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13208 states, 13207 states have (on average 5.326114939047475) internal successors, (70342), 13207 states have internal predecessors, (70342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 70342 transitions. [2021-05-22 02:07:02,093 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 70342 transitions. Word has length 33 [2021-05-22 02:07:02,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:02,093 INFO L482 AbstractCegarLoop]: Abstraction has 13208 states and 70342 transitions. [2021-05-22 02:07:02,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,093 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 70342 transitions. [2021-05-22 02:07:02,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:02,119 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:02,119 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, 1, 1, 1, 1] [2021-05-22 02:07:02,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-05-22 02:07:02,119 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:02,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:02,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1116380701, now seen corresponding path program 289 times [2021-05-22 02:07:02,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:02,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184729272] [2021-05-22 02:07:02,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:02,253 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 02:07:02,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:02,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184729272] [2021-05-22 02:07:02,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184729272] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:02,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:02,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:02,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293963896] [2021-05-22 02:07:02,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:02,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:02,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:02,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:02,254 INFO L87 Difference]: Start difference. First operand 13208 states and 70342 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:02,483 INFO L93 Difference]: Finished difference Result 31362 states and 157565 transitions. [2021-05-22 02:07:02,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:02,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:02,575 INFO L225 Difference]: With dead ends: 31362 [2021-05-22 02:07:02,575 INFO L226 Difference]: Without dead ends: 30603 [2021-05-22 02:07:02,575 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:03,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30603 states. [2021-05-22 02:07:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30603 to 13418. [2021-05-22 02:07:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13418 states, 13417 states have (on average 5.3181038980398005) internal successors, (71353), 13417 states have internal predecessors, (71353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71353 transitions. [2021-05-22 02:07:03,776 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71353 transitions. Word has length 33 [2021-05-22 02:07:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:03,776 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71353 transitions. [2021-05-22 02:07:03,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71353 transitions. [2021-05-22 02:07:03,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:03,802 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:03,802 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, 1, 1, 1, 1] [2021-05-22 02:07:03,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-05-22 02:07:03,802 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:03,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:03,803 INFO L82 PathProgramCache]: Analyzing trace with hash 269583739, now seen corresponding path program 290 times [2021-05-22 02:07:03,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:03,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137855789] [2021-05-22 02:07:03,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:03,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:03,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137855789] [2021-05-22 02:07:03,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137855789] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:03,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:03,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:03,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649069498] [2021-05-22 02:07:03,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:03,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:03,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:03,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:03,939 INFO L87 Difference]: Start difference. First operand 13418 states and 71353 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:04,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:04,176 INFO L93 Difference]: Finished difference Result 31354 states and 157417 transitions. [2021-05-22 02:07:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:04,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:04,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:04,274 INFO L225 Difference]: With dead ends: 31354 [2021-05-22 02:07:04,274 INFO L226 Difference]: Without dead ends: 30483 [2021-05-22 02:07:04,274 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30483 states. [2021-05-22 02:07:05,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30483 to 13298. [2021-05-22 02:07:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13298 states, 13297 states have (on average 5.324584492742724) internal successors, (70801), 13297 states have internal predecessors, (70801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:05,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70801 transitions. [2021-05-22 02:07:05,578 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70801 transitions. Word has length 33 [2021-05-22 02:07:05,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:05,578 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70801 transitions. [2021-05-22 02:07:05,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:05,579 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70801 transitions. [2021-05-22 02:07:05,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:05,605 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:05,605 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, 1, 1, 1, 1] [2021-05-22 02:07:05,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-05-22 02:07:05,605 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:05,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:05,605 INFO L82 PathProgramCache]: Analyzing trace with hash -774118725, now seen corresponding path program 291 times [2021-05-22 02:07:05,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:05,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557616475] [2021-05-22 02:07:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:05,748 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 02:07:05,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:05,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557616475] [2021-05-22 02:07:05,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557616475] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:05,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:05,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:05,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984084082] [2021-05-22 02:07:05,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:05,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:05,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:05,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:05,749 INFO L87 Difference]: Start difference. First operand 13298 states and 70801 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:05,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:05,956 INFO L93 Difference]: Finished difference Result 31380 states and 157566 transitions. [2021-05-22 02:07:05,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:05,957 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:06,053 INFO L225 Difference]: With dead ends: 31380 [2021-05-22 02:07:06,053 INFO L226 Difference]: Without dead ends: 30621 [2021-05-22 02:07:06,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30621 states. [2021-05-22 02:07:07,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30621 to 13422. [2021-05-22 02:07:07,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13422 states, 13421 states have (on average 5.3129424036957005) internal successors, (71305), 13421 states have internal predecessors, (71305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13422 states to 13422 states and 71305 transitions. [2021-05-22 02:07:07,380 INFO L78 Accepts]: Start accepts. Automaton has 13422 states and 71305 transitions. Word has length 33 [2021-05-22 02:07:07,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:07,380 INFO L482 AbstractCegarLoop]: Abstraction has 13422 states and 71305 transitions. [2021-05-22 02:07:07,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:07,380 INFO L276 IsEmpty]: Start isEmpty. Operand 13422 states and 71305 transitions. [2021-05-22 02:07:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:07,409 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:07,409 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:07,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-05-22 02:07:07,409 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:07,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:07,409 INFO L82 PathProgramCache]: Analyzing trace with hash -348378437, now seen corresponding path program 292 times [2021-05-22 02:07:07,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:07,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669888497] [2021-05-22 02:07:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:07,547 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 02:07:07,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:07,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669888497] [2021-05-22 02:07:07,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669888497] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:07,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:07,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:07,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321784387] [2021-05-22 02:07:07,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:07,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:07,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:07,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:07,548 INFO L87 Difference]: Start difference. First operand 13422 states and 71305 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:07,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:07,773 INFO L93 Difference]: Finished difference Result 31386 states and 157459 transitions. [2021-05-22 02:07:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:07,773 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:07,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:07,869 INFO L225 Difference]: With dead ends: 31386 [2021-05-22 02:07:07,869 INFO L226 Difference]: Without dead ends: 30497 [2021-05-22 02:07:07,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30497 states. [2021-05-22 02:07:09,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30497 to 13298. [2021-05-22 02:07:09,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13298 states, 13297 states have (on average 5.320072196736106) internal successors, (70741), 13297 states have internal predecessors, (70741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70741 transitions. [2021-05-22 02:07:09,217 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70741 transitions. Word has length 33 [2021-05-22 02:07:09,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:09,217 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70741 transitions. [2021-05-22 02:07:09,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:09,217 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70741 transitions. [2021-05-22 02:07:09,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:09,244 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:09,244 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, 1, 1, 1, 1] [2021-05-22 02:07:09,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-05-22 02:07:09,245 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:09,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:09,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1630866791, now seen corresponding path program 293 times [2021-05-22 02:07:09,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:09,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69352362] [2021-05-22 02:07:09,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:09,398 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 02:07:09,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:09,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69352362] [2021-05-22 02:07:09,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69352362] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:09,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:09,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:09,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201208258] [2021-05-22 02:07:09,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:09,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:09,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:09,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:09,399 INFO L87 Difference]: Start difference. First operand 13298 states and 70741 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:09,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:09,831 INFO L93 Difference]: Finished difference Result 31360 states and 157434 transitions. [2021-05-22 02:07:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:09,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:09,921 INFO L225 Difference]: With dead ends: 31360 [2021-05-22 02:07:09,921 INFO L226 Difference]: Without dead ends: 30609 [2021-05-22 02:07:09,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 179.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:10,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30609 states. [2021-05-22 02:07:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30609 to 13418. [2021-05-22 02:07:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13418 states, 13417 states have (on average 5.309160020869046) internal successors, (71233), 13417 states have internal predecessors, (71233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:10,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71233 transitions. [2021-05-22 02:07:10,951 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71233 transitions. Word has length 33 [2021-05-22 02:07:10,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:10,951 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71233 transitions. [2021-05-22 02:07:10,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:10,951 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71233 transitions. [2021-05-22 02:07:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:10,977 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:10,977 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:10,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-05-22 02:07:10,977 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:10,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:10,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1353519483, now seen corresponding path program 294 times [2021-05-22 02:07:10,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:10,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134211864] [2021-05-22 02:07:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:11,262 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-22 02:07:11,263 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 02:07:11,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:11,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134211864] [2021-05-22 02:07:11,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134211864] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:11,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:11,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:11,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425294830] [2021-05-22 02:07:11,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:11,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:11,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:11,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:11,264 INFO L87 Difference]: Start difference. First operand 13418 states and 71233 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:11,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:11,520 INFO L93 Difference]: Finished difference Result 31374 states and 157359 transitions. [2021-05-22 02:07:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:11,521 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:11,615 INFO L225 Difference]: With dead ends: 31374 [2021-05-22 02:07:11,615 INFO L226 Difference]: Without dead ends: 30429 [2021-05-22 02:07:11,616 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 314.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:12,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30429 states. [2021-05-22 02:07:12,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30429 to 13238. [2021-05-22 02:07:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13238 states, 13237 states have (on average 5.325602477902848) internal successors, (70495), 13237 states have internal predecessors, (70495), 0 states have call successors, (0), 0 states have call predecessors, (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 13238 states to 13238 states and 70495 transitions. [2021-05-22 02:07:12,859 INFO L78 Accepts]: Start accepts. Automaton has 13238 states and 70495 transitions. Word has length 33 [2021-05-22 02:07:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:12,859 INFO L482 AbstractCegarLoop]: Abstraction has 13238 states and 70495 transitions. [2021-05-22 02:07:12,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (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 L276 IsEmpty]: Start isEmpty. Operand 13238 states and 70495 transitions. [2021-05-22 02:07:12,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:12,886 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:12,886 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, 1, 1, 1, 1] [2021-05-22 02:07:12,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-05-22 02:07:12,886 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:12,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:12,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2140276475, now seen corresponding path program 295 times [2021-05-22 02:07:12,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:12,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480692713] [2021-05-22 02:07:12,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:13,034 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 02:07:13,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:13,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480692713] [2021-05-22 02:07:13,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480692713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:13,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:13,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:13,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551425124] [2021-05-22 02:07:13,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:13,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:13,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:13,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:13,035 INFO L87 Difference]: Start difference. First operand 13238 states and 70495 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:13,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:13,259 INFO L93 Difference]: Finished difference Result 31360 states and 157530 transitions. [2021-05-22 02:07:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:13,259 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:13,364 INFO L225 Difference]: With dead ends: 31360 [2021-05-22 02:07:13,364 INFO L226 Difference]: Without dead ends: 30601 [2021-05-22 02:07:13,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 173.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:14,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30601 states. [2021-05-22 02:07:14,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30601 to 13418. [2021-05-22 02:07:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13418 states, 13417 states have (on average 5.315867928747112) internal successors, (71323), 13417 states have internal predecessors, (71323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71323 transitions. [2021-05-22 02:07:14,576 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71323 transitions. Word has length 33 [2021-05-22 02:07:14,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:14,577 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71323 transitions. [2021-05-22 02:07:14,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:14,577 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71323 transitions. [2021-05-22 02:07:14,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:14,604 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:14,604 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, 1, 1, 1, 1] [2021-05-22 02:07:14,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-05-22 02:07:14,605 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:14,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:14,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1293479513, now seen corresponding path program 296 times [2021-05-22 02:07:14,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:14,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397390889] [2021-05-22 02:07:14,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:14,743 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 02:07:14,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:14,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397390889] [2021-05-22 02:07:14,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397390889] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:14,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:14,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:14,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17019401] [2021-05-22 02:07:14,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:14,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:14,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:14,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:14,744 INFO L87 Difference]: Start difference. First operand 13418 states and 71323 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:14,963 INFO L93 Difference]: Finished difference Result 31352 states and 157382 transitions. [2021-05-22 02:07:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:14,963 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:14,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:15,062 INFO L225 Difference]: With dead ends: 31352 [2021-05-22 02:07:15,062 INFO L226 Difference]: Without dead ends: 30481 [2021-05-22 02:07:15,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:15,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30481 states. [2021-05-22 02:07:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30481 to 13298. [2021-05-22 02:07:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13298 states, 13297 states have (on average 5.3223283447394145) internal successors, (70771), 13297 states have internal predecessors, (70771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70771 transitions. [2021-05-22 02:07:16,325 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70771 transitions. Word has length 33 [2021-05-22 02:07:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:16,325 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70771 transitions. [2021-05-22 02:07:16,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70771 transitions. [2021-05-22 02:07:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:16,353 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:16,353 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, 1, 1, 1, 1] [2021-05-22 02:07:16,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-05-22 02:07:16,353 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:16,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:16,354 INFO L82 PathProgramCache]: Analyzing trace with hash -989729989, now seen corresponding path program 297 times [2021-05-22 02:07:16,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:16,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63648383] [2021-05-22 02:07:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:16,515 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 02:07:16,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:16,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63648383] [2021-05-22 02:07:16,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63648383] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:16,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:16,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:16,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950747300] [2021-05-22 02:07:16,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:16,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:16,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:16,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:16,516 INFO L87 Difference]: Start difference. First operand 13298 states and 70771 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:16,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:16,749 INFO L93 Difference]: Finished difference Result 31376 states and 157526 transitions. [2021-05-22 02:07:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:16,750 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:16,846 INFO L225 Difference]: With dead ends: 31376 [2021-05-22 02:07:16,846 INFO L226 Difference]: Without dead ends: 30617 [2021-05-22 02:07:16,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 173.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30617 states. [2021-05-22 02:07:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30617 to 13422. [2021-05-22 02:07:18,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13422 states, 13421 states have (on average 5.31070710081216) internal successors, (71275), 13421 states have internal predecessors, (71275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:18,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13422 states to 13422 states and 71275 transitions. [2021-05-22 02:07:18,165 INFO L78 Accepts]: Start accepts. Automaton has 13422 states and 71275 transitions. Word has length 33 [2021-05-22 02:07:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:18,165 INFO L482 AbstractCegarLoop]: Abstraction has 13422 states and 71275 transitions. [2021-05-22 02:07:18,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 13422 states and 71275 transitions. [2021-05-22 02:07:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:18,192 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:18,192 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, 1, 1, 1, 1] [2021-05-22 02:07:18,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-05-22 02:07:18,192 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:18,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1768637243, now seen corresponding path program 298 times [2021-05-22 02:07:18,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:18,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396319908] [2021-05-22 02:07:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:18,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:18,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396319908] [2021-05-22 02:07:18,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396319908] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:18,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:18,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:18,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741318665] [2021-05-22 02:07:18,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:18,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:18,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:18,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:18,332 INFO L87 Difference]: Start difference. First operand 13422 states and 71275 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (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 L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:18,598 INFO L93 Difference]: Finished difference Result 31380 states and 157414 transitions. [2021-05-22 02:07:18,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:18,599 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:18,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:18,693 INFO L225 Difference]: With dead ends: 31380 [2021-05-22 02:07:18,693 INFO L226 Difference]: Without dead ends: 30493 [2021-05-22 02:07:18,693 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30493 states. [2021-05-22 02:07:19,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30493 to 13298. [2021-05-22 02:07:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13298 states, 13297 states have (on average 5.317816048732797) internal successors, (70711), 13297 states have internal predecessors, (70711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70711 transitions. [2021-05-22 02:07:19,945 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70711 transitions. Word has length 33 [2021-05-22 02:07:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:19,945 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70711 transitions. [2021-05-22 02:07:19,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70711 transitions. [2021-05-22 02:07:19,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:19,972 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:19,972 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, 1, 1, 1, 1] [2021-05-22 02:07:19,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-05-22 02:07:19,972 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:19,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1846478055, now seen corresponding path program 299 times [2021-05-22 02:07:19,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:19,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266574220] [2021-05-22 02:07:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:20,110 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 02:07:20,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:20,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266574220] [2021-05-22 02:07:20,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266574220] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:20,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:20,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:20,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661620885] [2021-05-22 02:07:20,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:20,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:20,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:20,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:20,111 INFO L87 Difference]: Start difference. First operand 13298 states and 70711 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:20,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:20,530 INFO L93 Difference]: Finished difference Result 31356 states and 157394 transitions. [2021-05-22 02:07:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:20,530 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:20,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:20,628 INFO L225 Difference]: With dead ends: 31356 [2021-05-22 02:07:20,628 INFO L226 Difference]: Without dead ends: 30605 [2021-05-22 02:07:20,628 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:21,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30605 states. [2021-05-22 02:07:21,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30605 to 13418. [2021-05-22 02:07:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13418 states, 13417 states have (on average 5.306924051576359) internal successors, (71203), 13417 states have internal predecessors, (71203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71203 transitions. [2021-05-22 02:07:21,678 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71203 transitions. Word has length 33 [2021-05-22 02:07:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:21,679 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71203 transitions. [2021-05-22 02:07:21,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:21,679 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71203 transitions. [2021-05-22 02:07:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:21,705 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:21,705 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, 1, 1, 1, 1] [2021-05-22 02:07:21,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-05-22 02:07:21,705 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:21,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:21,705 INFO L82 PathProgramCache]: Analyzing trace with hash 444850555, now seen corresponding path program 300 times [2021-05-22 02:07:21,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:21,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015875855] [2021-05-22 02:07:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:21,841 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 02:07:21,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:21,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015875855] [2021-05-22 02:07:21,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015875855] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:21,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:21,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:21,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821157083] [2021-05-22 02:07:21,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:21,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:21,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:21,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:21,842 INFO L87 Difference]: Start difference. First operand 13418 states and 71203 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:22,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:22,267 INFO L93 Difference]: Finished difference Result 31368 states and 157314 transitions. [2021-05-22 02:07:22,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:22,267 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:22,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:22,359 INFO L225 Difference]: With dead ends: 31368 [2021-05-22 02:07:22,359 INFO L226 Difference]: Without dead ends: 30425 [2021-05-22 02:07:22,359 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30425 states. [2021-05-22 02:07:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30425 to 13238. [2021-05-22 02:07:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13238 states, 13237 states have (on average 5.32333610334668) internal successors, (70465), 13237 states have internal predecessors, (70465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13238 states to 13238 states and 70465 transitions. [2021-05-22 02:07:23,629 INFO L78 Accepts]: Start accepts. Automaton has 13238 states and 70465 transitions. Word has length 33 [2021-05-22 02:07:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:23,629 INFO L482 AbstractCegarLoop]: Abstraction has 13238 states and 70465 transitions. [2021-05-22 02:07:23,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 13238 states and 70465 transitions. [2021-05-22 02:07:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:23,656 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:23,656 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, 1, 1, 1, 1] [2021-05-22 02:07:23,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-05-22 02:07:23,656 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:23,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:23,656 INFO L82 PathProgramCache]: Analyzing trace with hash -670076839, now seen corresponding path program 301 times [2021-05-22 02:07:23,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:23,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300843827] [2021-05-22 02:07:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:23,792 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 02:07:23,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:23,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300843827] [2021-05-22 02:07:23,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300843827] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:23,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:23,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:23,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219705149] [2021-05-22 02:07:23,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:23,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:23,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:23,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:23,793 INFO L87 Difference]: Start difference. First operand 13238 states and 70465 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:24,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:24,023 INFO L93 Difference]: Finished difference Result 31404 states and 157654 transitions. [2021-05-22 02:07:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:24,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:24,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:24,115 INFO L225 Difference]: With dead ends: 31404 [2021-05-22 02:07:24,115 INFO L226 Difference]: Without dead ends: 30645 [2021-05-22 02:07:24,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30645 states. [2021-05-22 02:07:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30645 to 13424. [2021-05-22 02:07:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13424 states, 13423 states have (on average 5.312821276912762) internal successors, (71314), 13423 states have internal predecessors, (71314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:25,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13424 states to 13424 states and 71314 transitions. [2021-05-22 02:07:25,353 INFO L78 Accepts]: Start accepts. Automaton has 13424 states and 71314 transitions. Word has length 33 [2021-05-22 02:07:25,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:25,353 INFO L482 AbstractCegarLoop]: Abstraction has 13424 states and 71314 transitions. [2021-05-22 02:07:25,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 13424 states and 71314 transitions. [2021-05-22 02:07:25,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:25,380 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:25,380 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, 1, 1, 1, 1] [2021-05-22 02:07:25,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-05-22 02:07:25,380 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:25,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:25,380 INFO L82 PathProgramCache]: Analyzing trace with hash -244336551, now seen corresponding path program 302 times [2021-05-22 02:07:25,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:25,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764744569] [2021-05-22 02:07:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:25,514 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 02:07:25,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:25,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764744569] [2021-05-22 02:07:25,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764744569] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:25,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:25,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:25,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887053710] [2021-05-22 02:07:25,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:25,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:25,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:25,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:25,515 INFO L87 Difference]: Start difference. First operand 13424 states and 71314 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:25,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:25,727 INFO L93 Difference]: Finished difference Result 31410 states and 157547 transitions. [2021-05-22 02:07:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:25,727 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:25,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:25,823 INFO L225 Difference]: With dead ends: 31410 [2021-05-22 02:07:25,823 INFO L226 Difference]: Without dead ends: 30521 [2021-05-22 02:07:25,823 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30521 states. [2021-05-22 02:07:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30521 to 13300. [2021-05-22 02:07:27,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13300 states, 13299 states have (on average 5.319798481088804) internal successors, (70748), 13299 states have internal predecessors, (70748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13300 states to 13300 states and 70748 transitions. [2021-05-22 02:07:27,053 INFO L78 Accepts]: Start accepts. Automaton has 13300 states and 70748 transitions. Word has length 33 [2021-05-22 02:07:27,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:27,053 INFO L482 AbstractCegarLoop]: Abstraction has 13300 states and 70748 transitions. [2021-05-22 02:07:27,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:27,053 INFO L276 IsEmpty]: Start isEmpty. Operand 13300 states and 70748 transitions. [2021-05-22 02:07:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:27,079 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:27,079 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, 1, 1, 1, 1] [2021-05-22 02:07:27,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-05-22 02:07:27,079 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:27,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:27,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1039524923, now seen corresponding path program 303 times [2021-05-22 02:07:27,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:27,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974518773] [2021-05-22 02:07:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:27,214 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 02:07:27,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:27,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974518773] [2021-05-22 02:07:27,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974518773] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:27,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:27,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:27,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901376646] [2021-05-22 02:07:27,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:27,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:27,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:27,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:27,215 INFO L87 Difference]: Start difference. First operand 13300 states and 70748 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:27,440 INFO L93 Difference]: Finished difference Result 31402 states and 157587 transitions. [2021-05-22 02:07:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:27,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:27,530 INFO L225 Difference]: With dead ends: 31402 [2021-05-22 02:07:27,530 INFO L226 Difference]: Without dead ends: 30643 [2021-05-22 02:07:27,531 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:28,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30643 states. [2021-05-22 02:07:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30643 to 13424. [2021-05-22 02:07:28,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13424 states, 13423 states have (on average 5.30820233926842) internal successors, (71252), 13423 states have internal predecessors, (71252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13424 states to 13424 states and 71252 transitions. [2021-05-22 02:07:28,774 INFO L78 Accepts]: Start accepts. Automaton has 13424 states and 71252 transitions. Word has length 33 [2021-05-22 02:07:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:28,775 INFO L482 AbstractCegarLoop]: Abstraction has 13424 states and 71252 transitions. [2021-05-22 02:07:28,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:28,775 INFO L276 IsEmpty]: Start isEmpty. Operand 13424 states and 71252 transitions. [2021-05-22 02:07:28,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:28,802 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:28,802 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, 1, 1, 1, 1] [2021-05-22 02:07:28,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-05-22 02:07:28,802 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:28,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:28,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1769855065, now seen corresponding path program 304 times [2021-05-22 02:07:28,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:28,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128514703] [2021-05-22 02:07:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:28,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:28,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128514703] [2021-05-22 02:07:28,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128514703] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:28,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:28,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:28,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572219902] [2021-05-22 02:07:28,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:28,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:28,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:28,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:28,941 INFO L87 Difference]: Start difference. First operand 13424 states and 71252 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:29,169 INFO L93 Difference]: Finished difference Result 31406 states and 157475 transitions. [2021-05-22 02:07:29,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:29,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:29,261 INFO L225 Difference]: With dead ends: 31406 [2021-05-22 02:07:29,261 INFO L226 Difference]: Without dead ends: 30519 [2021-05-22 02:07:29,261 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30519 states. [2021-05-22 02:07:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30519 to 13300. [2021-05-22 02:07:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13300 states, 13299 states have (on average 5.315136476426799) internal successors, (70686), 13299 states have internal predecessors, (70686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13300 states to 13300 states and 70686 transitions. [2021-05-22 02:07:30,491 INFO L78 Accepts]: Start accepts. Automaton has 13300 states and 70686 transitions. Word has length 33 [2021-05-22 02:07:30,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:30,491 INFO L482 AbstractCegarLoop]: Abstraction has 13300 states and 70686 transitions. [2021-05-22 02:07:30,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand 13300 states and 70686 transitions. [2021-05-22 02:07:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:30,518 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:30,518 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, 1, 1, 1, 1] [2021-05-22 02:07:30,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-05-22 02:07:30,518 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:30,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:30,518 INFO L82 PathProgramCache]: Analyzing trace with hash 551751769, now seen corresponding path program 305 times [2021-05-22 02:07:30,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:30,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007407626] [2021-05-22 02:07:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:30,654 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 02:07:30,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:30,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007407626] [2021-05-22 02:07:30,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007407626] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:30,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:30,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:30,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859933237] [2021-05-22 02:07:30,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:30,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:30,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:30,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:30,655 INFO L87 Difference]: Start difference. First operand 13300 states and 70686 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:31,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:31,080 INFO L93 Difference]: Finished difference Result 31416 states and 157566 transitions. [2021-05-22 02:07:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:31,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:31,182 INFO L225 Difference]: With dead ends: 31416 [2021-05-22 02:07:31,182 INFO L226 Difference]: Without dead ends: 30651 [2021-05-22 02:07:31,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:31,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30651 states. [2021-05-22 02:07:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30651 to 13426. [2021-05-22 02:07:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13426 states, 13425 states have (on average 5.30316573556797) internal successors, (71195), 13425 states have internal predecessors, (71195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13426 states to 13426 states and 71195 transitions. [2021-05-22 02:07:32,197 INFO L78 Accepts]: Start accepts. Automaton has 13426 states and 71195 transitions. Word has length 33 [2021-05-22 02:07:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:32,197 INFO L482 AbstractCegarLoop]: Abstraction has 13426 states and 71195 transitions. [2021-05-22 02:07:32,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 13426 states and 71195 transitions. [2021-05-22 02:07:32,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:32,223 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:32,223 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:32,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-05-22 02:07:32,223 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:32,224 INFO L82 PathProgramCache]: Analyzing trace with hash 70849723, now seen corresponding path program 306 times [2021-05-22 02:07:32,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:32,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996472325] [2021-05-22 02:07:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:32,362 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 02:07:32,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:32,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996472325] [2021-05-22 02:07:32,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996472325] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:32,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:32,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:32,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298875452] [2021-05-22 02:07:32,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:32,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:32,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:32,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:32,363 INFO L87 Difference]: Start difference. First operand 13426 states and 71195 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:32,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:32,726 INFO L93 Difference]: Finished difference Result 31414 states and 157435 transitions. [2021-05-22 02:07:32,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:32,727 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:32,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:32,819 INFO L225 Difference]: With dead ends: 31414 [2021-05-22 02:07:32,819 INFO L226 Difference]: Without dead ends: 30463 [2021-05-22 02:07:32,820 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30463 states. [2021-05-22 02:07:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30463 to 13238. [2021-05-22 02:07:33,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13238 states, 13237 states have (on average 5.321069728790511) internal successors, (70435), 13237 states have internal predecessors, (70435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13238 states to 13238 states and 70435 transitions. [2021-05-22 02:07:34,085 INFO L78 Accepts]: Start accepts. Automaton has 13238 states and 70435 transitions. Word has length 33 [2021-05-22 02:07:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:34,085 INFO L482 AbstractCegarLoop]: Abstraction has 13238 states and 70435 transitions. [2021-05-22 02:07:34,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 13238 states and 70435 transitions. [2021-05-22 02:07:34,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:34,114 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:34,114 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, 1, 1, 1, 1] [2021-05-22 02:07:34,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-05-22 02:07:34,114 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:34,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:34,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1795066039, now seen corresponding path program 307 times [2021-05-22 02:07:34,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:34,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257617953] [2021-05-22 02:07:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:34,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:34,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257617953] [2021-05-22 02:07:34,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257617953] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:34,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:34,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:34,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100717326] [2021-05-22 02:07:34,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:34,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:34,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:34,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:34,268 INFO L87 Difference]: Start difference. First operand 13238 states and 70435 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:34,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:34,492 INFO L93 Difference]: Finished difference Result 31366 states and 157483 transitions. [2021-05-22 02:07:34,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:34,493 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:34,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:34,590 INFO L225 Difference]: With dead ends: 31366 [2021-05-22 02:07:34,590 INFO L226 Difference]: Without dead ends: 30615 [2021-05-22 02:07:34,591 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 181.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:35,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30615 states. [2021-05-22 02:07:35,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30615 to 13418. [2021-05-22 02:07:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13418 states, 13417 states have (on average 5.311395990161735) internal successors, (71263), 13417 states have internal predecessors, (71263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71263 transitions. [2021-05-22 02:07:35,825 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71263 transitions. Word has length 33 [2021-05-22 02:07:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:35,825 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71263 transitions. [2021-05-22 02:07:35,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71263 transitions. [2021-05-22 02:07:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:35,853 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:35,853 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, 1, 1, 1, 1] [2021-05-22 02:07:35,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-05-22 02:07:35,853 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:35,853 INFO L82 PathProgramCache]: Analyzing trace with hash 484485017, now seen corresponding path program 308 times [2021-05-22 02:07:35,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:35,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760645297] [2021-05-22 02:07:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:36,007 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 02:07:36,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:36,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760645297] [2021-05-22 02:07:36,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760645297] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:36,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:36,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:36,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330764675] [2021-05-22 02:07:36,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:36,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:36,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:36,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:36,008 INFO L87 Difference]: Start difference. First operand 13418 states and 71263 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:36,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:36,250 INFO L93 Difference]: Finished difference Result 31380 states and 157408 transitions. [2021-05-22 02:07:36,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:36,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:36,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:36,345 INFO L225 Difference]: With dead ends: 31380 [2021-05-22 02:07:36,345 INFO L226 Difference]: Without dead ends: 30495 [2021-05-22 02:07:36,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 181.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:37,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30495 states. [2021-05-22 02:07:37,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30495 to 13298. [2021-05-22 02:07:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13298 states, 13297 states have (on average 5.317816048732797) internal successors, (70711), 13297 states have internal predecessors, (70711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:37,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70711 transitions. [2021-05-22 02:07:37,577 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70711 transitions. Word has length 33 [2021-05-22 02:07:37,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:37,577 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70711 transitions. [2021-05-22 02:07:37,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:37,577 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70711 transitions. [2021-05-22 02:07:37,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:37,604 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:37,604 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, 1, 1, 1, 1] [2021-05-22 02:07:37,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-05-22 02:07:37,604 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:37,604 INFO L82 PathProgramCache]: Analyzing trace with hash -790299495, now seen corresponding path program 309 times [2021-05-22 02:07:37,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:37,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092277709] [2021-05-22 02:07:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:37,740 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 02:07:37,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:37,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092277709] [2021-05-22 02:07:37,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092277709] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:37,740 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 [9] imperfect sequences [] total 9 [2021-05-22 02:07:37,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210647237] [2021-05-22 02:07:37,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:37,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:37,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:37,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:37,741 INFO L87 Difference]: Start difference. First operand 13298 states and 70711 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:37,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:37,952 INFO L93 Difference]: Finished difference Result 31364 states and 157418 transitions. [2021-05-22 02:07:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:37,952 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:37,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:38,047 INFO L225 Difference]: With dead ends: 31364 [2021-05-22 02:07:38,047 INFO L226 Difference]: Without dead ends: 30613 [2021-05-22 02:07:38,047 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:38,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30613 states. [2021-05-22 02:07:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30613 to 13418. [2021-05-22 02:07:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13418 states, 13417 states have (on average 5.306924051576359) internal successors, (71203), 13417 states have internal predecessors, (71203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71203 transitions. [2021-05-22 02:07:39,296 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71203 transitions. Word has length 33 [2021-05-22 02:07:39,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:39,296 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71203 transitions. [2021-05-22 02:07:39,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:39,296 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71203 transitions. [2021-05-22 02:07:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:39,322 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:39,322 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, 1, 1, 1, 1] [2021-05-22 02:07:39,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-05-22 02:07:39,323 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:39,323 INFO L82 PathProgramCache]: Analyzing trace with hash -527007975, now seen corresponding path program 310 times [2021-05-22 02:07:39,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:39,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742227500] [2021-05-22 02:07:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:39,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:39,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742227500] [2021-05-22 02:07:39,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742227500] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:39,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:39,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:39,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838588246] [2021-05-22 02:07:39,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:39,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:39,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:39,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:39,459 INFO L87 Difference]: Start difference. First operand 13418 states and 71203 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:39,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:39,684 INFO L93 Difference]: Finished difference Result 31376 states and 157338 transitions. [2021-05-22 02:07:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:39,685 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:39,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:39,779 INFO L225 Difference]: With dead ends: 31376 [2021-05-22 02:07:39,779 INFO L226 Difference]: Without dead ends: 30493 [2021-05-22 02:07:39,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30493 states. [2021-05-22 02:07:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30493 to 13298. [2021-05-22 02:07:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13298 states, 13297 states have (on average 5.313303752726179) internal successors, (70651), 13297 states have internal predecessors, (70651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70651 transitions. [2021-05-22 02:07:41,094 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70651 transitions. Word has length 33 [2021-05-22 02:07:41,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:41,094 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70651 transitions. [2021-05-22 02:07:41,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:41,094 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70651 transitions. [2021-05-22 02:07:41,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:41,121 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:41,121 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, 1, 1, 1, 1] [2021-05-22 02:07:41,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-05-22 02:07:41,122 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:41,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:41,122 INFO L82 PathProgramCache]: Analyzing trace with hash -866943621, now seen corresponding path program 311 times [2021-05-22 02:07:41,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:41,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802064538] [2021-05-22 02:07:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:41,259 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 02:07:41,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:41,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802064538] [2021-05-22 02:07:41,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802064538] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:41,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:41,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:41,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463540130] [2021-05-22 02:07:41,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:41,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:41,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:41,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:41,260 INFO L87 Difference]: Start difference. First operand 13298 states and 70651 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:41,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:41,766 INFO L93 Difference]: Finished difference Result 31398 states and 157471 transitions. [2021-05-22 02:07:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:41,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:41,864 INFO L225 Difference]: With dead ends: 31398 [2021-05-22 02:07:41,864 INFO L226 Difference]: Without dead ends: 30633 [2021-05-22 02:07:41,865 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:42,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30633 states. [2021-05-22 02:07:42,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30633 to 13424. [2021-05-22 02:07:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13424 states, 13423 states have (on average 5.30134843179617) internal successors, (71160), 13423 states have internal predecessors, (71160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13424 states to 13424 states and 71160 transitions. [2021-05-22 02:07:42,888 INFO L78 Accepts]: Start accepts. Automaton has 13424 states and 71160 transitions. Word has length 33 [2021-05-22 02:07:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:42,888 INFO L482 AbstractCegarLoop]: Abstraction has 13424 states and 71160 transitions. [2021-05-22 02:07:42,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:42,888 INFO L276 IsEmpty]: Start isEmpty. Operand 13424 states and 71160 transitions. [2021-05-22 02:07:42,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:42,917 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:42,917 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, 1, 1, 1, 1] [2021-05-22 02:07:42,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-05-22 02:07:42,917 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:42,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1404962137, now seen corresponding path program 312 times [2021-05-22 02:07:42,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:42,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639389538] [2021-05-22 02:07:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:43,054 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 02:07:43,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:43,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639389538] [2021-05-22 02:07:43,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639389538] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:43,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:43,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:43,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069785358] [2021-05-22 02:07:43,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:43,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:43,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:43,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:43,055 INFO L87 Difference]: Start difference. First operand 13424 states and 71160 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:43,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:43,461 INFO L93 Difference]: Finished difference Result 31396 states and 157340 transitions. [2021-05-22 02:07:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:43,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:43,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:43,555 INFO L225 Difference]: With dead ends: 31396 [2021-05-22 02:07:43,555 INFO L226 Difference]: Without dead ends: 30417 [2021-05-22 02:07:43,555 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:44,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30417 states. [2021-05-22 02:07:44,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30417 to 13208. [2021-05-22 02:07:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13208 states, 13207 states have (on average 5.324979177708791) internal successors, (70327), 13207 states have internal predecessors, (70327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 70327 transitions. [2021-05-22 02:07:44,820 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 70327 transitions. Word has length 33 [2021-05-22 02:07:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:44,820 INFO L482 AbstractCegarLoop]: Abstraction has 13208 states and 70327 transitions. [2021-05-22 02:07:44,820 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 70327 transitions. [2021-05-22 02:07:44,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:44,847 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:44,847 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, 1, 1, 1, 1] [2021-05-22 02:07:44,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-05-22 02:07:44,847 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:44,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:44,847 INFO L82 PathProgramCache]: Analyzing trace with hash 890792025, now seen corresponding path program 313 times [2021-05-22 02:07:44,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:44,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960496163] [2021-05-22 02:07:44,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:45,005 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 02:07:45,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:45,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960496163] [2021-05-22 02:07:45,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960496163] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:45,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:45,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:45,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043179604] [2021-05-22 02:07:45,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:45,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:45,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:45,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:45,006 INFO L87 Difference]: Start difference. First operand 13208 states and 70327 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:45,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:45,232 INFO L93 Difference]: Finished difference Result 32665 states and 163555 transitions. [2021-05-22 02:07:45,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:45,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:45,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:45,329 INFO L225 Difference]: With dead ends: 32665 [2021-05-22 02:07:45,329 INFO L226 Difference]: Without dead ends: 31906 [2021-05-22 02:07:45,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 183.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:46,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31906 states. [2021-05-22 02:07:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31906 to 13617. [2021-05-22 02:07:46,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13617 states, 13616 states have (on average 5.309341950646298) internal successors, (72292), 13616 states have internal predecessors, (72292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13617 states to 13617 states and 72292 transitions. [2021-05-22 02:07:46,580 INFO L78 Accepts]: Start accepts. Automaton has 13617 states and 72292 transitions. Word has length 33 [2021-05-22 02:07:46,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:46,580 INFO L482 AbstractCegarLoop]: Abstraction has 13617 states and 72292 transitions. [2021-05-22 02:07:46,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 13617 states and 72292 transitions. [2021-05-22 02:07:46,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:46,607 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:46,607 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, 1, 1, 1, 1] [2021-05-22 02:07:46,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-05-22 02:07:46,607 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:46,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:46,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1016094631, now seen corresponding path program 314 times [2021-05-22 02:07:46,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:46,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814889761] [2021-05-22 02:07:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:46,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:46,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814889761] [2021-05-22 02:07:46,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814889761] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:46,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:46,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:46,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972620621] [2021-05-22 02:07:46,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:46,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:46,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:46,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:46,763 INFO L87 Difference]: Start difference. First operand 13617 states and 72292 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:46,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:46,965 INFO L93 Difference]: Finished difference Result 32800 states and 164026 transitions. [2021-05-22 02:07:46,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:46,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:46,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:47,065 INFO L225 Difference]: With dead ends: 32800 [2021-05-22 02:07:47,065 INFO L226 Difference]: Without dead ends: 31718 [2021-05-22 02:07:47,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:47,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31718 states. [2021-05-22 02:07:48,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31718 to 13429. [2021-05-22 02:07:48,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13429 states, 13428 states have (on average 5.315311289842121) internal successors, (71374), 13428 states have internal predecessors, (71374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13429 states to 13429 states and 71374 transitions. [2021-05-22 02:07:48,338 INFO L78 Accepts]: Start accepts. Automaton has 13429 states and 71374 transitions. Word has length 33 [2021-05-22 02:07:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:48,338 INFO L482 AbstractCegarLoop]: Abstraction has 13429 states and 71374 transitions. [2021-05-22 02:07:48,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:48,338 INFO L276 IsEmpty]: Start isEmpty. Operand 13429 states and 71374 transitions. [2021-05-22 02:07:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:48,365 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:48,365 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, 1, 1, 1, 1] [2021-05-22 02:07:48,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-05-22 02:07:48,366 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:48,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:48,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1694573509, now seen corresponding path program 315 times [2021-05-22 02:07:48,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:48,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336441330] [2021-05-22 02:07:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:48,504 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 02:07:48,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:48,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336441330] [2021-05-22 02:07:48,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336441330] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:48,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:48,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:48,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226409829] [2021-05-22 02:07:48,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:48,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:48,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:48,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:48,505 INFO L87 Difference]: Start difference. First operand 13429 states and 71374 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:48,737 INFO L93 Difference]: Finished difference Result 32472 states and 162563 transitions. [2021-05-22 02:07:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:48,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:48,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:48,833 INFO L225 Difference]: With dead ends: 32472 [2021-05-22 02:07:48,833 INFO L226 Difference]: Without dead ends: 31713 [2021-05-22 02:07:48,833 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31713 states. [2021-05-22 02:07:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31713 to 13553. [2021-05-22 02:07:50,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13553 states, 13552 states have (on average 5.303866587957497) internal successors, (71878), 13552 states have internal predecessors, (71878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13553 states to 13553 states and 71878 transitions. [2021-05-22 02:07:50,080 INFO L78 Accepts]: Start accepts. Automaton has 13553 states and 71878 transitions. Word has length 33 [2021-05-22 02:07:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:50,080 INFO L482 AbstractCegarLoop]: Abstraction has 13553 states and 71878 transitions. [2021-05-22 02:07:50,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 13553 states and 71878 transitions. [2021-05-22 02:07:50,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:50,107 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:50,107 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:50,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-05-22 02:07:50,107 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:50,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:50,108 INFO L82 PathProgramCache]: Analyzing trace with hash 998096985, now seen corresponding path program 316 times [2021-05-22 02:07:50,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:50,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65511143] [2021-05-22 02:07:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:50,243 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 02:07:50,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:50,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65511143] [2021-05-22 02:07:50,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65511143] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:50,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:50,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:50,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994983818] [2021-05-22 02:07:50,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:50,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:50,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:50,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:50,244 INFO L87 Difference]: Start difference. First operand 13553 states and 71878 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:50,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:50,484 INFO L93 Difference]: Finished difference Result 32478 states and 162456 transitions. [2021-05-22 02:07:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:50,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:50,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:50,584 INFO L225 Difference]: With dead ends: 32478 [2021-05-22 02:07:50,584 INFO L226 Difference]: Without dead ends: 31589 [2021-05-22 02:07:50,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31589 states. [2021-05-22 02:07:51,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31589 to 13429. [2021-05-22 02:07:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13429 states, 13428 states have (on average 5.310694072088174) internal successors, (71312), 13428 states have internal predecessors, (71312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13429 states to 13429 states and 71312 transitions. [2021-05-22 02:07:51,832 INFO L78 Accepts]: Start accepts. Automaton has 13429 states and 71312 transitions. Word has length 33 [2021-05-22 02:07:51,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:51,832 INFO L482 AbstractCegarLoop]: Abstraction has 13429 states and 71312 transitions. [2021-05-22 02:07:51,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:51,832 INFO L276 IsEmpty]: Start isEmpty. Operand 13429 states and 71312 transitions. [2021-05-22 02:07:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:51,858 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:51,858 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:51,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-05-22 02:07:51,858 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:51,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:51,858 INFO L82 PathProgramCache]: Analyzing trace with hash 98429017, now seen corresponding path program 317 times [2021-05-22 02:07:51,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:51,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431098201] [2021-05-22 02:07:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:51,996 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 02:07:51,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:51,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431098201] [2021-05-22 02:07:51,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431098201] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:51,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:51,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:51,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111761997] [2021-05-22 02:07:51,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:51,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:51,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:51,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:51,996 INFO L87 Difference]: Start difference. First operand 13429 states and 71312 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:52,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:52,356 INFO L93 Difference]: Finished difference Result 32873 states and 164277 transitions. [2021-05-22 02:07:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:52,356 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:52,453 INFO L225 Difference]: With dead ends: 32873 [2021-05-22 02:07:52,453 INFO L226 Difference]: Without dead ends: 31979 [2021-05-22 02:07:52,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 146.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31979 states. [2021-05-22 02:07:53,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31979 to 13684. [2021-05-22 02:07:53,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13684 states, 13683 states have (on average 5.286486881531828) internal successors, (72335), 13683 states have internal predecessors, (72335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13684 states to 13684 states and 72335 transitions. [2021-05-22 02:07:53,499 INFO L78 Accepts]: Start accepts. Automaton has 13684 states and 72335 transitions. Word has length 33 [2021-05-22 02:07:53,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:53,499 INFO L482 AbstractCegarLoop]: Abstraction has 13684 states and 72335 transitions. [2021-05-22 02:07:53,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 13684 states and 72335 transitions. [2021-05-22 02:07:53,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:53,667 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:53,667 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, 1, 1, 1, 1] [2021-05-22 02:07:53,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-05-22 02:07:53,667 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:53,667 INFO L82 PathProgramCache]: Analyzing trace with hash -382473029, now seen corresponding path program 318 times [2021-05-22 02:07:53,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:53,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477196823] [2021-05-22 02:07:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:53,811 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 02:07:53,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:53,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477196823] [2021-05-22 02:07:53,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477196823] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:53,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:53,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:53,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132265227] [2021-05-22 02:07:53,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:53,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:53,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:53,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:53,812 INFO L87 Difference]: Start difference. First operand 13684 states and 72335 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:54,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:54,048 INFO L93 Difference]: Finished difference Result 32744 states and 163508 transitions. [2021-05-22 02:07:54,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:54,048 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:54,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:54,146 INFO L225 Difference]: With dead ends: 32744 [2021-05-22 02:07:54,147 INFO L226 Difference]: Without dead ends: 31598 [2021-05-22 02:07:54,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:54,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31598 states. [2021-05-22 02:07:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31598 to 13303. [2021-05-22 02:07:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13303 states, 13302 states have (on average 5.317997293640054) internal successors, (70740), 13302 states have internal predecessors, (70740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:55,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13303 states to 13303 states and 70740 transitions. [2021-05-22 02:07:55,340 INFO L78 Accepts]: Start accepts. Automaton has 13303 states and 70740 transitions. Word has length 33 [2021-05-22 02:07:55,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:55,340 INFO L482 AbstractCegarLoop]: Abstraction has 13303 states and 70740 transitions. [2021-05-22 02:07:55,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 13303 states and 70740 transitions. [2021-05-22 02:07:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:55,366 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:55,366 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, 1, 1, 1, 1] [2021-05-22 02:07:55,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-05-22 02:07:55,366 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:55,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:55,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1154389061, now seen corresponding path program 319 times [2021-05-22 02:07:55,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:55,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524891159] [2021-05-22 02:07:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:55,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:55,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524891159] [2021-05-22 02:07:55,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524891159] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:55,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:55,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:55,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502658008] [2021-05-22 02:07:55,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:55,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:55,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:55,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:55,522 INFO L87 Difference]: Start difference. First operand 13303 states and 70740 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:55,757 INFO L93 Difference]: Finished difference Result 32566 states and 163084 transitions. [2021-05-22 02:07:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:55,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:55,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:55,853 INFO L225 Difference]: With dead ends: 32566 [2021-05-22 02:07:55,853 INFO L226 Difference]: Without dead ends: 31807 [2021-05-22 02:07:55,854 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 183.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31807 states. [2021-05-22 02:07:57,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31807 to 13585. [2021-05-22 02:07:57,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13585 states, 13584 states have (on average 5.306610718492344) internal successors, (72085), 13584 states have internal predecessors, (72085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:57,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13585 states to 13585 states and 72085 transitions. [2021-05-22 02:07:57,070 INFO L78 Accepts]: Start accepts. Automaton has 13585 states and 72085 transitions. Word has length 33 [2021-05-22 02:07:57,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:57,071 INFO L482 AbstractCegarLoop]: Abstraction has 13585 states and 72085 transitions. [2021-05-22 02:07:57,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:57,071 INFO L276 IsEmpty]: Start isEmpty. Operand 13585 states and 72085 transitions. [2021-05-22 02:07:57,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:57,097 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:57,097 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, 1, 1, 1, 1] [2021-05-22 02:07:57,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-05-22 02:07:57,097 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:57,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:57,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1233691579, now seen corresponding path program 320 times [2021-05-22 02:07:57,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:57,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148855389] [2021-05-22 02:07:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:57,251 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 02:07:57,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:57,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148855389] [2021-05-22 02:07:57,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148855389] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:57,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:57,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:57,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337157109] [2021-05-22 02:07:57,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:57,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:57,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:57,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:57,252 INFO L87 Difference]: Start difference. First operand 13585 states and 72085 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:57,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:57,459 INFO L93 Difference]: Finished difference Result 32701 states and 163555 transitions. [2021-05-22 02:07:57,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:57,460 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:57,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:57,559 INFO L225 Difference]: With dead ends: 32701 [2021-05-22 02:07:57,559 INFO L226 Difference]: Without dead ends: 31619 [2021-05-22 02:07:57,559 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:07:58,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31619 states. [2021-05-22 02:07:58,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31619 to 13397. [2021-05-22 02:07:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13397 states, 13396 states have (on average 5.312555986861749) internal successors, (71167), 13396 states have internal predecessors, (71167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 71167 transitions. [2021-05-22 02:07:58,822 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 71167 transitions. Word has length 33 [2021-05-22 02:07:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:58,822 INFO L482 AbstractCegarLoop]: Abstraction has 13397 states and 71167 transitions. [2021-05-22 02:07:58,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 71167 transitions. [2021-05-22 02:07:58,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:07:58,850 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:58,850 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, 1, 1, 1, 1] [2021-05-22 02:07:58,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-05-22 02:07:58,850 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:58,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:58,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1218237371, now seen corresponding path program 321 times [2021-05-22 02:07:58,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:58,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571894657] [2021-05-22 02:07:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:58,988 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 02:07:58,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:58,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571894657] [2021-05-22 02:07:58,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571894657] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:58,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:58,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:07:58,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195190842] [2021-05-22 02:07:58,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:07:58,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:58,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:07:58,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:58,989 INFO L87 Difference]: Start difference. First operand 13397 states and 71167 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:59,214 INFO L93 Difference]: Finished difference Result 32371 states and 162087 transitions. [2021-05-22 02:07:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:07:59,215 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:07:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:59,311 INFO L225 Difference]: With dead ends: 32371 [2021-05-22 02:07:59,311 INFO L226 Difference]: Without dead ends: 31612 [2021-05-22 02:07:59,311 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:00,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31612 states. [2021-05-22 02:08:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31612 to 13521. [2021-05-22 02:08:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13521 states, 13520 states have (on average 5.301109467455621) internal successors, (71671), 13520 states have internal predecessors, (71671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 71671 transitions. [2021-05-22 02:08:00,581 INFO L78 Accepts]: Start accepts. Automaton has 13521 states and 71671 transitions. Word has length 33 [2021-05-22 02:08:00,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:00,581 INFO L482 AbstractCegarLoop]: Abstraction has 13521 states and 71671 transitions. [2021-05-22 02:08:00,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 13521 states and 71671 transitions. [2021-05-22 02:08:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:00,609 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:00,609 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, 1, 1, 1, 1] [2021-05-22 02:08:00,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-05-22 02:08:00,610 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:00,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:00,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1938616409, now seen corresponding path program 322 times [2021-05-22 02:08:00,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:00,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269880270] [2021-05-22 02:08:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:00,750 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 02:08:00,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:00,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269880270] [2021-05-22 02:08:00,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269880270] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:00,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:00,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:00,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683258451] [2021-05-22 02:08:00,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:00,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:00,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:00,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:00,751 INFO L87 Difference]: Start difference. First operand 13521 states and 71671 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:01,184 INFO L93 Difference]: Finished difference Result 32375 states and 161975 transitions. [2021-05-22 02:08:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:01,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:01,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:01,299 INFO L225 Difference]: With dead ends: 32375 [2021-05-22 02:08:01,299 INFO L226 Difference]: Without dead ends: 31488 [2021-05-22 02:08:01,299 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:01,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31488 states. [2021-05-22 02:08:02,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31488 to 13397. [2021-05-22 02:08:02,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13397 states, 13396 states have (on average 5.307927739623768) internal successors, (71105), 13396 states have internal predecessors, (71105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 71105 transitions. [2021-05-22 02:08:02,350 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 71105 transitions. Word has length 33 [2021-05-22 02:08:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:02,350 INFO L482 AbstractCegarLoop]: Abstraction has 13397 states and 71105 transitions. [2021-05-22 02:08:02,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 71105 transitions. [2021-05-22 02:08:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:02,378 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:02,378 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, 1, 1, 1, 1] [2021-05-22 02:08:02,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-05-22 02:08:02,378 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:02,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:02,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1293678503, now seen corresponding path program 323 times [2021-05-22 02:08:02,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:02,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836381921] [2021-05-22 02:08:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:02,519 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 02:08:02,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:02,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836381921] [2021-05-22 02:08:02,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836381921] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:02,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:02,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:02,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754443162] [2021-05-22 02:08:02,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:02,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:02,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:02,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:02,520 INFO L87 Difference]: Start difference. First operand 13397 states and 71105 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:02,894 INFO L93 Difference]: Finished difference Result 32707 states and 163542 transitions. [2021-05-22 02:08:02,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:02,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:02,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:02,997 INFO L225 Difference]: With dead ends: 32707 [2021-05-22 02:08:02,997 INFO L226 Difference]: Without dead ends: 31813 [2021-05-22 02:08:02,998 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31813 states. [2021-05-22 02:08:04,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31813 to 13587. [2021-05-22 02:08:04,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13587 states, 13586 states have (on average 5.290004416310908) internal successors, (71870), 13586 states have internal predecessors, (71870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:04,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13587 states to 13587 states and 71870 transitions. [2021-05-22 02:08:04,452 INFO L78 Accepts]: Start accepts. Automaton has 13587 states and 71870 transitions. Word has length 33 [2021-05-22 02:08:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:04,452 INFO L482 AbstractCegarLoop]: Abstraction has 13587 states and 71870 transitions. [2021-05-22 02:08:04,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 13587 states and 71870 transitions. [2021-05-22 02:08:04,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:04,481 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:04,481 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, 1, 1, 1, 1] [2021-05-22 02:08:04,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-05-22 02:08:04,481 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:04,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:04,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1827329083, now seen corresponding path program 324 times [2021-05-22 02:08:04,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:04,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907725469] [2021-05-22 02:08:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:04,621 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 02:08:04,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:04,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907725469] [2021-05-22 02:08:04,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907725469] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:04,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:04,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:04,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314224786] [2021-05-22 02:08:04,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:04,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:04,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:04,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:04,622 INFO L87 Difference]: Start difference. First operand 13587 states and 71870 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:04,850 INFO L93 Difference]: Finished difference Result 32576 states and 162769 transitions. [2021-05-22 02:08:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:04,850 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:04,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:04,943 INFO L225 Difference]: With dead ends: 32576 [2021-05-22 02:08:04,943 INFO L226 Difference]: Without dead ends: 31529 [2021-05-22 02:08:04,943 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:05,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31529 states. [2021-05-22 02:08:06,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31529 to 13303. [2021-05-22 02:08:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13303 states, 13302 states have (on average 5.314463990377387) internal successors, (70693), 13302 states have internal predecessors, (70693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13303 states to 13303 states and 70693 transitions. [2021-05-22 02:08:06,190 INFO L78 Accepts]: Start accepts. Automaton has 13303 states and 70693 transitions. Word has length 33 [2021-05-22 02:08:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:06,190 INFO L482 AbstractCegarLoop]: Abstraction has 13303 states and 70693 transitions. [2021-05-22 02:08:06,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 13303 states and 70693 transitions. [2021-05-22 02:08:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:06,218 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:06,218 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:06,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-05-22 02:08:06,218 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:06,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:06,218 INFO L82 PathProgramCache]: Analyzing trace with hash 454616861, now seen corresponding path program 325 times [2021-05-22 02:08:06,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:06,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542699749] [2021-05-22 02:08:06,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:06,371 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 02:08:06,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:06,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542699749] [2021-05-22 02:08:06,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542699749] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:06,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:06,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:06,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746562126] [2021-05-22 02:08:06,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:06,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:06,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:06,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:06,372 INFO L87 Difference]: Start difference. First operand 13303 states and 70693 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:06,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:06,631 INFO L93 Difference]: Finished difference Result 32084 states and 160745 transitions. [2021-05-22 02:08:06,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:06,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:06,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:06,730 INFO L225 Difference]: With dead ends: 32084 [2021-05-22 02:08:06,730 INFO L226 Difference]: Without dead ends: 31325 [2021-05-22 02:08:06,730 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31325 states. [2021-05-22 02:08:07,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31325 to 13489. [2021-05-22 02:08:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13489 states, 13488 states have (on average 5.304122182680902) internal successors, (71542), 13488 states have internal predecessors, (71542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13489 states to 13489 states and 71542 transitions. [2021-05-22 02:08:07,974 INFO L78 Accepts]: Start accepts. Automaton has 13489 states and 71542 transitions. Word has length 33 [2021-05-22 02:08:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:07,974 INFO L482 AbstractCegarLoop]: Abstraction has 13489 states and 71542 transitions. [2021-05-22 02:08:07,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 13489 states and 71542 transitions. [2021-05-22 02:08:08,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:08,001 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:08,001 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, 1, 1, 1, 1] [2021-05-22 02:08:08,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-05-22 02:08:08,001 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:08,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:08,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1147679941, now seen corresponding path program 326 times [2021-05-22 02:08:08,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:08,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685689214] [2021-05-22 02:08:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:08,139 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 02:08:08,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:08,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685689214] [2021-05-22 02:08:08,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685689214] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:08,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:08,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:08,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168965406] [2021-05-22 02:08:08,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:08,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:08,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:08,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:08,140 INFO L87 Difference]: Start difference. First operand 13489 states and 71542 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:08,371 INFO L93 Difference]: Finished difference Result 32090 states and 160638 transitions. [2021-05-22 02:08:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:08,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:08,467 INFO L225 Difference]: With dead ends: 32090 [2021-05-22 02:08:08,468 INFO L226 Difference]: Without dead ends: 31201 [2021-05-22 02:08:08,468 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:09,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31201 states. [2021-05-22 02:08:09,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31201 to 13365. [2021-05-22 02:08:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13365 states, 13364 states have (on average 5.3109847351092485) internal successors, (70976), 13364 states have internal predecessors, (70976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13365 states to 13365 states and 70976 transitions. [2021-05-22 02:08:09,724 INFO L78 Accepts]: Start accepts. Automaton has 13365 states and 70976 transitions. Word has length 33 [2021-05-22 02:08:09,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:09,724 INFO L482 AbstractCegarLoop]: Abstraction has 13365 states and 70976 transitions. [2021-05-22 02:08:09,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 13365 states and 70976 transitions. [2021-05-22 02:08:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:09,752 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:09,752 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, 1, 1, 1, 1] [2021-05-22 02:08:09,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-05-22 02:08:09,752 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:09,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:09,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1912663931, now seen corresponding path program 327 times [2021-05-22 02:08:09,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:09,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354966465] [2021-05-22 02:08:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:09,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:09,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354966465] [2021-05-22 02:08:09,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354966465] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:09,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:09,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:09,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566006063] [2021-05-22 02:08:09,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:09,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:09,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:09,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:09,891 INFO L87 Difference]: Start difference. First operand 13365 states and 70976 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:10,127 INFO L93 Difference]: Finished difference Result 32082 states and 160678 transitions. [2021-05-22 02:08:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:10,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:10,227 INFO L225 Difference]: With dead ends: 32082 [2021-05-22 02:08:10,228 INFO L226 Difference]: Without dead ends: 31323 [2021-05-22 02:08:10,228 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31323 states. [2021-05-22 02:08:11,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31323 to 13489. [2021-05-22 02:08:11,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13489 states, 13488 states have (on average 5.2995255041518385) internal successors, (71480), 13488 states have internal predecessors, (71480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13489 states to 13489 states and 71480 transitions. [2021-05-22 02:08:11,509 INFO L78 Accepts]: Start accepts. Automaton has 13489 states and 71480 transitions. Word has length 33 [2021-05-22 02:08:11,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:11,509 INFO L482 AbstractCegarLoop]: Abstraction has 13489 states and 71480 transitions. [2021-05-22 02:08:11,510 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:11,510 INFO L276 IsEmpty]: Start isEmpty. Operand 13489 states and 71480 transitions. [2021-05-22 02:08:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:11,536 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:11,536 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, 1, 1, 1, 1] [2021-05-22 02:08:11,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-05-22 02:08:11,536 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:11,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:11,537 INFO L82 PathProgramCache]: Analyzing trace with hash -106564677, now seen corresponding path program 328 times [2021-05-22 02:08:11,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:11,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877174747] [2021-05-22 02:08:11,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:11,675 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 02:08:11,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:11,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877174747] [2021-05-22 02:08:11,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877174747] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:11,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:11,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:11,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19789548] [2021-05-22 02:08:11,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:11,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:11,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:11,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:11,676 INFO L87 Difference]: Start difference. First operand 13489 states and 71480 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:12,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:12,115 INFO L93 Difference]: Finished difference Result 32086 states and 160566 transitions. [2021-05-22 02:08:12,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:12,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:12,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:12,223 INFO L225 Difference]: With dead ends: 32086 [2021-05-22 02:08:12,223 INFO L226 Difference]: Without dead ends: 31199 [2021-05-22 02:08:12,223 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:12,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31199 states. [2021-05-22 02:08:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31199 to 13365. [2021-05-22 02:08:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13365 states, 13364 states have (on average 5.306345405567195) internal successors, (70914), 13364 states have internal predecessors, (70914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13365 states to 13365 states and 70914 transitions. [2021-05-22 02:08:13,294 INFO L78 Accepts]: Start accepts. Automaton has 13365 states and 70914 transitions. Word has length 33 [2021-05-22 02:08:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:13,294 INFO L482 AbstractCegarLoop]: Abstraction has 13365 states and 70914 transitions. [2021-05-22 02:08:13,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 13365 states and 70914 transitions. [2021-05-22 02:08:13,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:13,321 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:13,321 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, 1, 1, 1, 1] [2021-05-22 02:08:13,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-05-22 02:08:13,321 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:13,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:13,322 INFO L82 PathProgramCache]: Analyzing trace with hash -353159079, now seen corresponding path program 329 times [2021-05-22 02:08:13,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:13,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857292218] [2021-05-22 02:08:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:13,592 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 02:08:13,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:13,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857292218] [2021-05-22 02:08:13,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857292218] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:13,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:13,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:13,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360017040] [2021-05-22 02:08:13,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:13,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:13,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:13,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:13,593 INFO L87 Difference]: Start difference. First operand 13365 states and 70914 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:13,833 INFO L93 Difference]: Finished difference Result 32096 states and 160657 transitions. [2021-05-22 02:08:13,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:13,833 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:13,941 INFO L225 Difference]: With dead ends: 32096 [2021-05-22 02:08:13,941 INFO L226 Difference]: Without dead ends: 31331 [2021-05-22 02:08:13,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 298.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:14,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31331 states. [2021-05-22 02:08:15,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31331 to 13491. [2021-05-22 02:08:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13491 states, 13490 states have (on average 5.2945144551519645) internal successors, (71423), 13490 states have internal predecessors, (71423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71423 transitions. [2021-05-22 02:08:15,200 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71423 transitions. Word has length 33 [2021-05-22 02:08:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:15,200 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71423 transitions. [2021-05-22 02:08:15,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:15,200 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71423 transitions. [2021-05-22 02:08:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:15,226 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:15,226 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, 1, 1, 1, 1] [2021-05-22 02:08:15,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-05-22 02:08:15,226 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:15,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:15,227 INFO L82 PathProgramCache]: Analyzing trace with hash -834061125, now seen corresponding path program 330 times [2021-05-22 02:08:15,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:15,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65137279] [2021-05-22 02:08:15,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:15,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:15,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65137279] [2021-05-22 02:08:15,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65137279] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:15,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:15,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:15,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992751040] [2021-05-22 02:08:15,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:15,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:15,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:15,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:15,366 INFO L87 Difference]: Start difference. First operand 13491 states and 71423 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:15,604 INFO L93 Difference]: Finished difference Result 32094 states and 160526 transitions. [2021-05-22 02:08:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:15,604 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:15,710 INFO L225 Difference]: With dead ends: 32094 [2021-05-22 02:08:15,710 INFO L226 Difference]: Without dead ends: 31143 [2021-05-22 02:08:15,710 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:16,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31143 states. [2021-05-22 02:08:16,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31143 to 13303. [2021-05-22 02:08:16,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13303 states, 13302 states have (on average 5.312133513757329) internal successors, (70662), 13302 states have internal predecessors, (70662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13303 states to 13303 states and 70662 transitions. [2021-05-22 02:08:16,936 INFO L78 Accepts]: Start accepts. Automaton has 13303 states and 70662 transitions. Word has length 33 [2021-05-22 02:08:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:16,936 INFO L482 AbstractCegarLoop]: Abstraction has 13303 states and 70662 transitions. [2021-05-22 02:08:16,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:16,937 INFO L276 IsEmpty]: Start isEmpty. Operand 13303 states and 70662 transitions. [2021-05-22 02:08:16,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:16,963 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:16,963 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, 1, 1, 1, 1] [2021-05-22 02:08:16,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-05-22 02:08:16,964 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:16,964 INFO L82 PathProgramCache]: Analyzing trace with hash 635125849, now seen corresponding path program 331 times [2021-05-22 02:08:16,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:16,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794368263] [2021-05-22 02:08:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:17,105 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 02:08:17,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:17,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794368263] [2021-05-22 02:08:17,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794368263] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:17,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:17,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:17,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959880935] [2021-05-22 02:08:17,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:17,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:17,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:17,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:17,106 INFO L87 Difference]: Start difference. First operand 13303 states and 70662 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:17,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:17,322 INFO L93 Difference]: Finished difference Result 32914 states and 164434 transitions. [2021-05-22 02:08:17,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:17,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:17,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:17,425 INFO L225 Difference]: With dead ends: 32914 [2021-05-22 02:08:17,425 INFO L226 Difference]: Without dead ends: 32020 [2021-05-22 02:08:17,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:18,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32020 states. [2021-05-22 02:08:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32020 to 13717. [2021-05-22 02:08:18,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13717 states, 13716 states have (on average 5.283318751822689) internal successors, (72466), 13716 states have internal predecessors, (72466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13717 states to 13717 states and 72466 transitions. [2021-05-22 02:08:18,731 INFO L78 Accepts]: Start accepts. Automaton has 13717 states and 72466 transitions. Word has length 33 [2021-05-22 02:08:18,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:18,731 INFO L482 AbstractCegarLoop]: Abstraction has 13717 states and 72466 transitions. [2021-05-22 02:08:18,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 13717 states and 72466 transitions. [2021-05-22 02:08:18,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:18,760 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:18,760 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, 1, 1, 1, 1] [2021-05-22 02:08:18,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-05-22 02:08:18,760 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:18,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:18,760 INFO L82 PathProgramCache]: Analyzing trace with hash 154223803, now seen corresponding path program 332 times [2021-05-22 02:08:18,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:18,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309134821] [2021-05-22 02:08:18,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:18,900 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 02:08:18,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:18,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309134821] [2021-05-22 02:08:18,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309134821] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:18,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:18,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:18,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851619901] [2021-05-22 02:08:18,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:18,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:18,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:18,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:18,901 INFO L87 Difference]: Start difference. First operand 13717 states and 72466 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:19,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:19,140 INFO L93 Difference]: Finished difference Result 32785 states and 163665 transitions. [2021-05-22 02:08:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:19,140 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:19,240 INFO L225 Difference]: With dead ends: 32785 [2021-05-22 02:08:19,240 INFO L226 Difference]: Without dead ends: 31765 [2021-05-22 02:08:19,241 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:20,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31765 states. [2021-05-22 02:08:20,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31765 to 13462. [2021-05-22 02:08:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13462 states, 13461 states have (on average 5.297971918876755) internal successors, (71316), 13461 states have internal predecessors, (71316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13462 states to 13462 states and 71316 transitions. [2021-05-22 02:08:20,541 INFO L78 Accepts]: Start accepts. Automaton has 13462 states and 71316 transitions. Word has length 33 [2021-05-22 02:08:20,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:20,541 INFO L482 AbstractCegarLoop]: Abstraction has 13462 states and 71316 transitions. [2021-05-22 02:08:20,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 13462 states and 71316 transitions. [2021-05-22 02:08:20,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:20,567 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:20,567 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:20,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-05-22 02:08:20,567 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:20,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:20,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1950239685, now seen corresponding path program 333 times [2021-05-22 02:08:20,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:20,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692776722] [2021-05-22 02:08:20,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:20,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:20,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692776722] [2021-05-22 02:08:20,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692776722] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:20,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:20,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:20,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931735978] [2021-05-22 02:08:20,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:20,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:20,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:20,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:20,710 INFO L87 Difference]: Start difference. First operand 13462 states and 71316 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (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 L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:20,925 INFO L93 Difference]: Finished difference Result 32847 states and 164043 transitions. [2021-05-22 02:08:20,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:20,925 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:20,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:21,285 INFO L225 Difference]: With dead ends: 32847 [2021-05-22 02:08:21,285 INFO L226 Difference]: Without dead ends: 31953 [2021-05-22 02:08:21,285 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:21,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31953 states. [2021-05-22 02:08:22,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31953 to 13652. [2021-05-22 02:08:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13652 states, 13651 states have (on average 5.280272507508608) internal successors, (72081), 13651 states have internal predecessors, (72081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13652 states to 13652 states and 72081 transitions. [2021-05-22 02:08:22,309 INFO L78 Accepts]: Start accepts. Automaton has 13652 states and 72081 transitions. Word has length 33 [2021-05-22 02:08:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:22,309 INFO L482 AbstractCegarLoop]: Abstraction has 13652 states and 72081 transitions. [2021-05-22 02:08:22,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 13652 states and 72081 transitions. [2021-05-22 02:08:22,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:22,337 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:22,337 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, 1, 1, 1, 1] [2021-05-22 02:08:22,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-05-22 02:08:22,337 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:22,337 INFO L82 PathProgramCache]: Analyzing trace with hash -857269189, now seen corresponding path program 334 times [2021-05-22 02:08:22,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:22,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328850819] [2021-05-22 02:08:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:22,477 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 02:08:22,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:22,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328850819] [2021-05-22 02:08:22,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328850819] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:22,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:22,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:22,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862988849] [2021-05-22 02:08:22,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:22,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:22,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:22,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:22,478 INFO L87 Difference]: Start difference. First operand 13652 states and 72081 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:22,794 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-05-22 02:08:22,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:22,892 INFO L93 Difference]: Finished difference Result 32716 states and 163270 transitions. [2021-05-22 02:08:22,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:22,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:22,995 INFO L225 Difference]: With dead ends: 32716 [2021-05-22 02:08:22,995 INFO L226 Difference]: Without dead ends: 31763 [2021-05-22 02:08:22,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 361.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31763 states. [2021-05-22 02:08:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31763 to 13462. [2021-05-22 02:08:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13462 states, 13461 states have (on average 5.290914493722606) internal successors, (71221), 13461 states have internal predecessors, (71221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:24,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13462 states to 13462 states and 71221 transitions. [2021-05-22 02:08:24,322 INFO L78 Accepts]: Start accepts. Automaton has 13462 states and 71221 transitions. Word has length 33 [2021-05-22 02:08:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:24,322 INFO L482 AbstractCegarLoop]: Abstraction has 13462 states and 71221 transitions. [2021-05-22 02:08:24,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:24,322 INFO L276 IsEmpty]: Start isEmpty. Operand 13462 states and 71221 transitions. [2021-05-22 02:08:24,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:24,363 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:24,363 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:24,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-05-22 02:08:24,363 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:24,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:24,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1555341341, now seen corresponding path program 335 times [2021-05-22 02:08:24,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:24,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125306425] [2021-05-22 02:08:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:24,543 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 02:08:24,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:24,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125306425] [2021-05-22 02:08:24,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125306425] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:24,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:24,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:24,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146041391] [2021-05-22 02:08:24,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:24,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:24,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:24,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:24,544 INFO L87 Difference]: Start difference. First operand 13462 states and 71221 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:24,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:24,857 INFO L93 Difference]: Finished difference Result 32525 states and 162472 transitions. [2021-05-22 02:08:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:24,858 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:24,991 INFO L225 Difference]: With dead ends: 32525 [2021-05-22 02:08:24,991 INFO L226 Difference]: Without dead ends: 31760 [2021-05-22 02:08:24,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 207.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:25,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31760 states. [2021-05-22 02:08:26,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31760 to 13588. [2021-05-22 02:08:26,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13588 states, 13587 states have (on average 5.27931110620446) internal successors, (71730), 13587 states have internal predecessors, (71730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13588 states to 13588 states and 71730 transitions. [2021-05-22 02:08:26,476 INFO L78 Accepts]: Start accepts. Automaton has 13588 states and 71730 transitions. Word has length 33 [2021-05-22 02:08:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:26,476 INFO L482 AbstractCegarLoop]: Abstraction has 13588 states and 71730 transitions. [2021-05-22 02:08:26,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 13588 states and 71730 transitions. [2021-05-22 02:08:26,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:26,504 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:26,504 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, 1, 1, 1, 1] [2021-05-22 02:08:26,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-05-22 02:08:26,504 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:26,504 INFO L82 PathProgramCache]: Analyzing trace with hash -467720197, now seen corresponding path program 336 times [2021-05-22 02:08:26,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:26,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430320232] [2021-05-22 02:08:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:26,644 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 02:08:26,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:26,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430320232] [2021-05-22 02:08:26,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430320232] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:26,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:26,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:26,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582821684] [2021-05-22 02:08:26,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:26,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:26,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:26,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:26,645 INFO L87 Difference]: Start difference. First operand 13588 states and 71730 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:26,871 INFO L93 Difference]: Finished difference Result 32523 states and 162341 transitions. [2021-05-22 02:08:26,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:26,871 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:26,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:26,971 INFO L225 Difference]: With dead ends: 32523 [2021-05-22 02:08:26,971 INFO L226 Difference]: Without dead ends: 31380 [2021-05-22 02:08:26,971 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31380 states. [2021-05-22 02:08:28,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31380 to 13208. [2021-05-22 02:08:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13208 states, 13207 states have (on average 5.321420458847581) internal successors, (70280), 13207 states have internal predecessors, (70280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 70280 transitions. [2021-05-22 02:08:28,205 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 70280 transitions. Word has length 33 [2021-05-22 02:08:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:28,205 INFO L482 AbstractCegarLoop]: Abstraction has 13208 states and 70280 transitions. [2021-05-22 02:08:28,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 70280 transitions. [2021-05-22 02:08:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:28,233 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:28,233 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, 1, 1, 1, 1] [2021-05-22 02:08:28,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-05-22 02:08:28,233 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:28,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:28,233 INFO L82 PathProgramCache]: Analyzing trace with hash 237463863, now seen corresponding path program 337 times [2021-05-22 02:08:28,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:28,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486039584] [2021-05-22 02:08:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:28,398 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 02:08:28,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:28,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486039584] [2021-05-22 02:08:28,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486039584] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:28,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:28,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:28,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098246181] [2021-05-22 02:08:28,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:28,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:28,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:28,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:28,399 INFO L87 Difference]: Start difference. First operand 13208 states and 70280 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:28,623 INFO L93 Difference]: Finished difference Result 32584 states and 163211 transitions. [2021-05-22 02:08:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:28,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:28,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:28,727 INFO L225 Difference]: With dead ends: 32584 [2021-05-22 02:08:28,727 INFO L226 Difference]: Without dead ends: 31833 [2021-05-22 02:08:28,727 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 193.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:29,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31833 states. [2021-05-22 02:08:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31833 to 13594. [2021-05-22 02:08:29,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13594 states, 13593 states have (on average 5.309423968218936) internal successors, (72171), 13593 states have internal predecessors, (72171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13594 states to 13594 states and 72171 transitions. [2021-05-22 02:08:29,967 INFO L78 Accepts]: Start accepts. Automaton has 13594 states and 72171 transitions. Word has length 33 [2021-05-22 02:08:29,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:29,967 INFO L482 AbstractCegarLoop]: Abstraction has 13594 states and 72171 transitions. [2021-05-22 02:08:29,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 13594 states and 72171 transitions. [2021-05-22 02:08:29,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:29,994 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:29,995 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, 1, 1, 1, 1] [2021-05-22 02:08:29,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-05-22 02:08:29,995 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:29,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:29,995 INFO L82 PathProgramCache]: Analyzing trace with hash -380059495, now seen corresponding path program 338 times [2021-05-22 02:08:29,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:29,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889901485] [2021-05-22 02:08:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:30,161 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 02:08:30,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:30,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889901485] [2021-05-22 02:08:30,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889901485] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:30,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:30,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:30,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195723836] [2021-05-22 02:08:30,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:30,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:30,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:30,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:30,162 INFO L87 Difference]: Start difference. First operand 13594 states and 72171 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:30,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:30,372 INFO L93 Difference]: Finished difference Result 32727 states and 163714 transitions. [2021-05-22 02:08:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:30,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:30,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:30,474 INFO L225 Difference]: With dead ends: 32727 [2021-05-22 02:08:30,474 INFO L226 Difference]: Without dead ends: 31649 [2021-05-22 02:08:30,474 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 173.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31649 states. [2021-05-22 02:08:31,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31649 to 13410. [2021-05-22 02:08:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13410 states, 13409 states have (on average 5.3148631516145874) internal successors, (71267), 13409 states have internal predecessors, (71267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13410 states to 13410 states and 71267 transitions. [2021-05-22 02:08:31,747 INFO L78 Accepts]: Start accepts. Automaton has 13410 states and 71267 transitions. Word has length 33 [2021-05-22 02:08:31,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:31,747 INFO L482 AbstractCegarLoop]: Abstraction has 13410 states and 71267 transitions. [2021-05-22 02:08:31,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:31,747 INFO L276 IsEmpty]: Start isEmpty. Operand 13410 states and 71267 transitions. [2021-05-22 02:08:31,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:31,774 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:31,774 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, 1, 1, 1, 1] [2021-05-22 02:08:31,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-05-22 02:08:31,774 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:31,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:31,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1947065625, now seen corresponding path program 339 times [2021-05-22 02:08:31,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:31,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835885376] [2021-05-22 02:08:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:31,937 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 02:08:31,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:31,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835885376] [2021-05-22 02:08:31,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835885376] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:31,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:31,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:31,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774900503] [2021-05-22 02:08:31,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:31,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:31,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:31,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:31,938 INFO L87 Difference]: Start difference. First operand 13410 states and 71267 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:32,337 INFO L93 Difference]: Finished difference Result 32391 states and 162221 transitions. [2021-05-22 02:08:32,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:32,338 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:32,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:32,439 INFO L225 Difference]: With dead ends: 32391 [2021-05-22 02:08:32,439 INFO L226 Difference]: Without dead ends: 31640 [2021-05-22 02:08:32,439 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 191.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31640 states. [2021-05-22 02:08:33,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31640 to 13530. [2021-05-22 02:08:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13530 states, 13529 states have (on average 5.304087515707) internal successors, (71759), 13529 states have internal predecessors, (71759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13530 states to 13530 states and 71759 transitions. [2021-05-22 02:08:33,506 INFO L78 Accepts]: Start accepts. Automaton has 13530 states and 71759 transitions. Word has length 33 [2021-05-22 02:08:33,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:33,506 INFO L482 AbstractCegarLoop]: Abstraction has 13530 states and 71759 transitions. [2021-05-22 02:08:33,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:33,506 INFO L276 IsEmpty]: Start isEmpty. Operand 13530 states and 71759 transitions. [2021-05-22 02:08:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:33,535 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:33,535 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, 1, 1, 1, 1] [2021-05-22 02:08:33,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-05-22 02:08:33,535 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:33,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:33,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1391552487, now seen corresponding path program 340 times [2021-05-22 02:08:33,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:33,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069403931] [2021-05-22 02:08:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:33,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:33,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069403931] [2021-05-22 02:08:33,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069403931] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:33,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:33,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:33,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688139562] [2021-05-22 02:08:33,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:33,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:33,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:33,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:33,837 INFO L87 Difference]: Start difference. First operand 13530 states and 71759 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:34,070 INFO L93 Difference]: Finished difference Result 32405 states and 162146 transitions. [2021-05-22 02:08:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:34,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:34,178 INFO L225 Difference]: With dead ends: 32405 [2021-05-22 02:08:34,178 INFO L226 Difference]: Without dead ends: 31520 [2021-05-22 02:08:34,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 193.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:34,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31520 states. [2021-05-22 02:08:35,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31520 to 13410. [2021-05-22 02:08:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13410 states, 13409 states have (on average 5.3103885450070845) internal successors, (71207), 13409 states have internal predecessors, (71207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:35,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13410 states to 13410 states and 71207 transitions. [2021-05-22 02:08:35,421 INFO L78 Accepts]: Start accepts. Automaton has 13410 states and 71207 transitions. Word has length 33 [2021-05-22 02:08:35,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:35,421 INFO L482 AbstractCegarLoop]: Abstraction has 13410 states and 71207 transitions. [2021-05-22 02:08:35,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:35,421 INFO L276 IsEmpty]: Start isEmpty. Operand 13410 states and 71207 transitions. [2021-05-22 02:08:35,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:35,448 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:35,448 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:35,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-05-22 02:08:35,448 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:35,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:35,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1423003909, now seen corresponding path program 341 times [2021-05-22 02:08:35,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:35,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949978727] [2021-05-22 02:08:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:35,600 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 02:08:35,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:35,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949978727] [2021-05-22 02:08:35,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949978727] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:35,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:35,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:35,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138121096] [2021-05-22 02:08:35,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:35,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:35,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:35,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:35,601 INFO L87 Difference]: Start difference. First operand 13410 states and 71207 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:35,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:35,811 INFO L93 Difference]: Finished difference Result 32812 states and 164009 transitions. [2021-05-22 02:08:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:35,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:35,915 INFO L225 Difference]: With dead ends: 32812 [2021-05-22 02:08:35,915 INFO L226 Difference]: Without dead ends: 31918 [2021-05-22 02:08:35,915 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 159.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31918 states. [2021-05-22 02:08:37,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31918 to 13665. [2021-05-22 02:08:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13665 states, 13664 states have (on average 5.2861533957845435) internal successors, (72230), 13664 states have internal predecessors, (72230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:37,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 72230 transitions. [2021-05-22 02:08:37,144 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 72230 transitions. Word has length 33 [2021-05-22 02:08:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:37,144 INFO L482 AbstractCegarLoop]: Abstraction has 13665 states and 72230 transitions. [2021-05-22 02:08:37,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:37,145 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 72230 transitions. [2021-05-22 02:08:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:37,172 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:37,172 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, 1, 1, 1, 1] [2021-05-22 02:08:37,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-05-22 02:08:37,172 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:37,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:37,173 INFO L82 PathProgramCache]: Analyzing trace with hash 848901849, now seen corresponding path program 342 times [2021-05-22 02:08:37,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:37,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070785153] [2021-05-22 02:08:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:37,324 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 02:08:37,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:37,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070785153] [2021-05-22 02:08:37,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070785153] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:37,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:37,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:37,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157490408] [2021-05-22 02:08:37,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:37,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:37,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:37,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:37,325 INFO L87 Difference]: Start difference. First operand 13665 states and 72230 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:37,560 INFO L93 Difference]: Finished difference Result 32683 states and 163240 transitions. [2021-05-22 02:08:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:37,561 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:37,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:37,665 INFO L225 Difference]: With dead ends: 32683 [2021-05-22 02:08:37,665 INFO L226 Difference]: Without dead ends: 31539 [2021-05-22 02:08:37,665 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 179.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:38,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31539 states. [2021-05-22 02:08:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31539 to 13286. [2021-05-22 02:08:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13286 states, 13285 states have (on average 5.317350395182537) internal successors, (70641), 13285 states have internal predecessors, (70641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13286 states to 13286 states and 70641 transitions. [2021-05-22 02:08:38,937 INFO L78 Accepts]: Start accepts. Automaton has 13286 states and 70641 transitions. Word has length 33 [2021-05-22 02:08:38,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:38,937 INFO L482 AbstractCegarLoop]: Abstraction has 13286 states and 70641 transitions. [2021-05-22 02:08:38,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 13286 states and 70641 transitions. [2021-05-22 02:08:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:38,963 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:38,963 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, 1, 1, 1, 1] [2021-05-22 02:08:38,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-05-22 02:08:38,964 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:38,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:38,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1807717223, now seen corresponding path program 343 times [2021-05-22 02:08:38,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:38,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21246376] [2021-05-22 02:08:38,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:39,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:39,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21246376] [2021-05-22 02:08:39,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21246376] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:39,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:39,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:39,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260013284] [2021-05-22 02:08:39,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:39,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:39,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:39,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:39,117 INFO L87 Difference]: Start difference. First operand 13286 states and 70641 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:39,367 INFO L93 Difference]: Finished difference Result 32485 states and 162741 transitions. [2021-05-22 02:08:39,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:39,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:39,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:39,466 INFO L225 Difference]: With dead ends: 32485 [2021-05-22 02:08:39,466 INFO L226 Difference]: Without dead ends: 31734 [2021-05-22 02:08:39,466 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:40,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31734 states. [2021-05-22 02:08:40,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31734 to 13562. [2021-05-22 02:08:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13562 states, 13561 states have (on average 5.306762038197773) internal successors, (71965), 13561 states have internal predecessors, (71965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13562 states to 13562 states and 71965 transitions. [2021-05-22 02:08:40,722 INFO L78 Accepts]: Start accepts. Automaton has 13562 states and 71965 transitions. Word has length 33 [2021-05-22 02:08:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:40,722 INFO L482 AbstractCegarLoop]: Abstraction has 13562 states and 71965 transitions. [2021-05-22 02:08:40,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 13562 states and 71965 transitions. [2021-05-22 02:08:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:40,749 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:40,749 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, 1, 1, 1, 1] [2021-05-22 02:08:40,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-05-22 02:08:40,750 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:40,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1869726715, now seen corresponding path program 344 times [2021-05-22 02:08:40,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:40,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848306115] [2021-05-22 02:08:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:40,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:40,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848306115] [2021-05-22 02:08:40,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848306115] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:40,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:40,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:40,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539646086] [2021-05-22 02:08:40,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:40,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:40,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:40,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:40,903 INFO L87 Difference]: Start difference. First operand 13562 states and 71965 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:41,318 INFO L93 Difference]: Finished difference Result 32628 states and 163244 transitions. [2021-05-22 02:08:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:41,431 INFO L225 Difference]: With dead ends: 32628 [2021-05-22 02:08:41,431 INFO L226 Difference]: Without dead ends: 31550 [2021-05-22 02:08:41,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:42,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31550 states. [2021-05-22 02:08:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31550 to 13378. [2021-05-22 02:08:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13378 states, 13377 states have (on average 5.312177618300067) internal successors, (71061), 13377 states have internal predecessors, (71061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13378 states to 13378 states and 71061 transitions. [2021-05-22 02:08:42,476 INFO L78 Accepts]: Start accepts. Automaton has 13378 states and 71061 transitions. Word has length 33 [2021-05-22 02:08:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:42,476 INFO L482 AbstractCegarLoop]: Abstraction has 13378 states and 71061 transitions. [2021-05-22 02:08:42,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 13378 states and 71061 transitions. [2021-05-22 02:08:42,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:42,503 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:42,504 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, 1, 1, 1, 1] [2021-05-22 02:08:42,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-05-22 02:08:42,504 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:42,504 INFO L82 PathProgramCache]: Analyzing trace with hash 564909209, now seen corresponding path program 345 times [2021-05-22 02:08:42,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:42,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805647103] [2021-05-22 02:08:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:42,640 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 02:08:42,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:42,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805647103] [2021-05-22 02:08:42,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805647103] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:42,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:42,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:42,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829583609] [2021-05-22 02:08:42,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:42,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:42,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:42,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:42,641 INFO L87 Difference]: Start difference. First operand 13378 states and 71061 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:43,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:43,041 INFO L93 Difference]: Finished difference Result 32290 states and 161746 transitions. [2021-05-22 02:08:43,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:43,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:43,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:43,140 INFO L225 Difference]: With dead ends: 32290 [2021-05-22 02:08:43,140 INFO L226 Difference]: Without dead ends: 31539 [2021-05-22 02:08:43,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31539 states. [2021-05-22 02:08:44,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31539 to 13498. [2021-05-22 02:08:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13498 states, 13497 states have (on average 5.301400311180262) internal successors, (71553), 13497 states have internal predecessors, (71553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13498 states to 13498 states and 71553 transitions. [2021-05-22 02:08:44,466 INFO L78 Accepts]: Start accepts. Automaton has 13498 states and 71553 transitions. Word has length 33 [2021-05-22 02:08:44,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:44,466 INFO L482 AbstractCegarLoop]: Abstraction has 13498 states and 71553 transitions. [2021-05-22 02:08:44,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:44,466 INFO L276 IsEmpty]: Start isEmpty. Operand 13498 states and 71553 transitions. [2021-05-22 02:08:44,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:44,497 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:44,497 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, 1, 1, 1, 1] [2021-05-22 02:08:44,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-05-22 02:08:44,498 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:44,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:44,498 INFO L82 PathProgramCache]: Analyzing trace with hash 818249625, now seen corresponding path program 346 times [2021-05-22 02:08:44,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:44,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439703634] [2021-05-22 02:08:44,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:44,636 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 02:08:44,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:44,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439703634] [2021-05-22 02:08:44,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439703634] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:44,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:44,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:44,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067361245] [2021-05-22 02:08:44,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:44,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:44,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:44,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:44,637 INFO L87 Difference]: Start difference. First operand 13498 states and 71553 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:44,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:44,859 INFO L93 Difference]: Finished difference Result 32302 states and 161666 transitions. [2021-05-22 02:08:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:44,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:44,958 INFO L225 Difference]: With dead ends: 32302 [2021-05-22 02:08:44,958 INFO L226 Difference]: Without dead ends: 31419 [2021-05-22 02:08:44,958 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:45,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31419 states. [2021-05-22 02:08:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31419 to 13378. [2021-05-22 02:08:46,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13378 states, 13377 states have (on average 5.3076923076923075) internal successors, (71001), 13377 states have internal predecessors, (71001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13378 states to 13378 states and 71001 transitions. [2021-05-22 02:08:46,214 INFO L78 Accepts]: Start accepts. Automaton has 13378 states and 71001 transitions. Word has length 33 [2021-05-22 02:08:46,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:46,214 INFO L482 AbstractCegarLoop]: Abstraction has 13378 states and 71001 transitions. [2021-05-22 02:08:46,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:46,214 INFO L276 IsEmpty]: Start isEmpty. Operand 13378 states and 71001 transitions. [2021-05-22 02:08:46,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:46,241 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:46,242 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, 1, 1, 1, 1] [2021-05-22 02:08:46,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-05-22 02:08:46,242 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:46,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:46,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1489806971, now seen corresponding path program 347 times [2021-05-22 02:08:46,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:46,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062207049] [2021-05-22 02:08:46,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:46,381 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 02:08:46,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:46,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062207049] [2021-05-22 02:08:46,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062207049] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:46,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:46,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:46,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111903353] [2021-05-22 02:08:46,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:46,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:46,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:46,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:46,381 INFO L87 Difference]: Start difference. First operand 13378 states and 71001 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:46,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:46,582 INFO L93 Difference]: Finished difference Result 32646 states and 163275 transitions. [2021-05-22 02:08:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:46,582 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:46,678 INFO L225 Difference]: With dead ends: 32646 [2021-05-22 02:08:46,678 INFO L226 Difference]: Without dead ends: 31752 [2021-05-22 02:08:46,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 147.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:47,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31752 states. [2021-05-22 02:08:47,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31752 to 13568. [2021-05-22 02:08:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13568 states, 13567 states have (on average 5.289747180658952) internal successors, (71766), 13567 states have internal predecessors, (71766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13568 states to 13568 states and 71766 transitions. [2021-05-22 02:08:47,927 INFO L78 Accepts]: Start accepts. Automaton has 13568 states and 71766 transitions. Word has length 33 [2021-05-22 02:08:47,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:47,927 INFO L482 AbstractCegarLoop]: Abstraction has 13568 states and 71766 transitions. [2021-05-22 02:08:47,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:47,927 INFO L276 IsEmpty]: Start isEmpty. Operand 13568 states and 71766 transitions. [2021-05-22 02:08:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:47,954 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:47,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:47,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-05-22 02:08:47,954 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:47,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:47,955 INFO L82 PathProgramCache]: Analyzing trace with hash -543205671, now seen corresponding path program 348 times [2021-05-22 02:08:47,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:47,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396133805] [2021-05-22 02:08:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:48,093 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 02:08:48,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:48,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396133805] [2021-05-22 02:08:48,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396133805] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:48,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:48,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:48,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078039650] [2021-05-22 02:08:48,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:48,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:48,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:48,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:48,094 INFO L87 Difference]: Start difference. First operand 13568 states and 71766 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:48,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:48,315 INFO L93 Difference]: Finished difference Result 32515 states and 162502 transitions. [2021-05-22 02:08:48,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:48,315 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:48,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:48,414 INFO L225 Difference]: With dead ends: 32515 [2021-05-22 02:08:48,414 INFO L226 Difference]: Without dead ends: 31470 [2021-05-22 02:08:48,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:49,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31470 states. [2021-05-22 02:08:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31470 to 13286. [2021-05-22 02:08:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13286 states, 13285 states have (on average 5.313887843432442) internal successors, (70595), 13285 states have internal predecessors, (70595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13286 states to 13286 states and 70595 transitions. [2021-05-22 02:08:49,687 INFO L78 Accepts]: Start accepts. Automaton has 13286 states and 70595 transitions. Word has length 33 [2021-05-22 02:08:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:49,687 INFO L482 AbstractCegarLoop]: Abstraction has 13286 states and 70595 transitions. [2021-05-22 02:08:49,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 13286 states and 70595 transitions. [2021-05-22 02:08:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:49,713 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:49,713 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, 1, 1, 1, 1] [2021-05-22 02:08:49,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-05-22 02:08:49,714 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:49,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:49,714 INFO L82 PathProgramCache]: Analyzing trace with hash -198711301, now seen corresponding path program 349 times [2021-05-22 02:08:49,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:49,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130845751] [2021-05-22 02:08:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:49,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:49,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130845751] [2021-05-22 02:08:49,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130845751] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:49,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:49,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:49,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880318007] [2021-05-22 02:08:49,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:49,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:49,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:49,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:49,886 INFO L87 Difference]: Start difference. First operand 13286 states and 70595 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:50,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:50,195 INFO L93 Difference]: Finished difference Result 32003 states and 160403 transitions. [2021-05-22 02:08:50,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:50,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:50,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:50,291 INFO L225 Difference]: With dead ends: 32003 [2021-05-22 02:08:50,291 INFO L226 Difference]: Without dead ends: 31252 [2021-05-22 02:08:50,291 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 211.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:51,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31252 states. [2021-05-22 02:08:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31252 to 13466. [2021-05-22 02:08:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13466 states, 13465 states have (on average 5.304344597103602) internal successors, (71423), 13465 states have internal predecessors, (71423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:51,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 71423 transitions. [2021-05-22 02:08:51,571 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 71423 transitions. Word has length 33 [2021-05-22 02:08:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:51,571 INFO L482 AbstractCegarLoop]: Abstraction has 13466 states and 71423 transitions. [2021-05-22 02:08:51,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 71423 transitions. [2021-05-22 02:08:51,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:51,598 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:51,598 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, 1, 1, 1, 1] [2021-05-22 02:08:51,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-05-22 02:08:51,598 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:51,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:51,599 INFO L82 PathProgramCache]: Analyzing trace with hash 757637883, now seen corresponding path program 350 times [2021-05-22 02:08:51,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:51,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92075959] [2021-05-22 02:08:51,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:51,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:51,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92075959] [2021-05-22 02:08:51,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92075959] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:51,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:51,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:51,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720237381] [2021-05-22 02:08:51,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:51,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:51,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:51,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:51,752 INFO L87 Difference]: Start difference. First operand 13466 states and 71423 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:52,174 INFO L93 Difference]: Finished difference Result 32017 states and 160328 transitions. [2021-05-22 02:08:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:52,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:52,275 INFO L225 Difference]: With dead ends: 32017 [2021-05-22 02:08:52,275 INFO L226 Difference]: Without dead ends: 31132 [2021-05-22 02:08:52,275 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31132 states. [2021-05-22 02:08:53,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31132 to 13346. [2021-05-22 02:08:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13346 states, 13345 states have (on average 5.310678156612964) internal successors, (70871), 13345 states have internal predecessors, (70871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:53,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 70871 transitions. [2021-05-22 02:08:53,335 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 70871 transitions. Word has length 33 [2021-05-22 02:08:53,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:53,335 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 70871 transitions. [2021-05-22 02:08:53,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:53,336 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 70871 transitions. [2021-05-22 02:08:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:53,363 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:53,363 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:53,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-05-22 02:08:53,363 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:53,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1259335769, now seen corresponding path program 351 times [2021-05-22 02:08:53,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:53,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919286390] [2021-05-22 02:08:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:53,586 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-05-22 02:08:53,641 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 02:08:53,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:53,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919286390] [2021-05-22 02:08:53,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919286390] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:53,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:53,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:53,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893398638] [2021-05-22 02:08:53,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:53,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:53,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:53,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:53,642 INFO L87 Difference]: Start difference. First operand 13346 states and 70871 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:53,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:53,867 INFO L93 Difference]: Finished difference Result 32001 states and 160338 transitions. [2021-05-22 02:08:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:53,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:53,963 INFO L225 Difference]: With dead ends: 32001 [2021-05-22 02:08:53,963 INFO L226 Difference]: Without dead ends: 31250 [2021-05-22 02:08:53,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 307.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31250 states. [2021-05-22 02:08:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31250 to 13466. [2021-05-22 02:08:55,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13466 states, 13465 states have (on average 5.299888600074267) internal successors, (71363), 13465 states have internal predecessors, (71363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 71363 transitions. [2021-05-22 02:08:55,229 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 71363 transitions. Word has length 33 [2021-05-22 02:08:55,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:55,229 INFO L482 AbstractCegarLoop]: Abstraction has 13466 states and 71363 transitions. [2021-05-22 02:08:55,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 71363 transitions. [2021-05-22 02:08:55,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:55,256 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:55,256 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:55,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-05-22 02:08:55,256 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:55,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1226931461, now seen corresponding path program 352 times [2021-05-22 02:08:55,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:55,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146080798] [2021-05-22 02:08:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:55,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:55,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146080798] [2021-05-22 02:08:55,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146080798] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:55,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:55,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:55,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165411066] [2021-05-22 02:08:55,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:55,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:55,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:55,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:55,396 INFO L87 Difference]: Start difference. First operand 13466 states and 71363 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (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 32013 states and 160258 transitions. [2021-05-22 02:08:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:55,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:55,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:55,731 INFO L225 Difference]: With dead ends: 32013 [2021-05-22 02:08:55,732 INFO L226 Difference]: Without dead ends: 31130 [2021-05-22 02:08:55,732 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:56,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31130 states. [2021-05-22 02:08:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31130 to 13346. [2021-05-22 02:08:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13346 states, 13345 states have (on average 5.306182090670664) internal successors, (70811), 13345 states have internal predecessors, (70811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 70811 transitions. [2021-05-22 02:08:56,960 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 70811 transitions. Word has length 33 [2021-05-22 02:08:56,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:56,960 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 70811 transitions. [2021-05-22 02:08:56,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:56,960 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 70811 transitions. [2021-05-22 02:08:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:56,986 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:56,986 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, 1, 1, 1, 1] [2021-05-22 02:08:56,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-05-22 02:08:56,986 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:56,987 INFO L82 PathProgramCache]: Analyzing trace with hash -595358213, now seen corresponding path program 353 times [2021-05-22 02:08:56,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:56,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895194258] [2021-05-22 02:08:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:57,123 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 02:08:57,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:57,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895194258] [2021-05-22 02:08:57,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895194258] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:57,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:57,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:57,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230928804] [2021-05-22 02:08:57,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:57,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:57,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:57,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:57,124 INFO L87 Difference]: Start difference. First operand 13346 states and 70811 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:57,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:57,340 INFO L93 Difference]: Finished difference Result 32035 states and 160391 transitions. [2021-05-22 02:08:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:57,341 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:57,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:57,444 INFO L225 Difference]: With dead ends: 32035 [2021-05-22 02:08:57,445 INFO L226 Difference]: Without dead ends: 31270 [2021-05-22 02:08:57,445 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:08:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31270 states. [2021-05-22 02:08:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31270 to 13472. [2021-05-22 02:08:58,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13472 states, 13471 states have (on average 5.294335980996214) internal successors, (71320), 13471 states have internal predecessors, (71320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:58,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13472 states to 13472 states and 71320 transitions. [2021-05-22 02:08:58,694 INFO L78 Accepts]: Start accepts. Automaton has 13472 states and 71320 transitions. Word has length 33 [2021-05-22 02:08:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:58,694 INFO L482 AbstractCegarLoop]: Abstraction has 13472 states and 71320 transitions. [2021-05-22 02:08:58,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 13472 states and 71320 transitions. [2021-05-22 02:08:58,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:08:58,721 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:58,721 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, 1, 1, 1, 1] [2021-05-22 02:08:58,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-05-22 02:08:58,721 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:58,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1676547545, now seen corresponding path program 354 times [2021-05-22 02:08:58,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:58,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725886728] [2021-05-22 02:08:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:58,858 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 02:08:58,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:58,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725886728] [2021-05-22 02:08:58,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725886728] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:58,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:58,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:08:58,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050536466] [2021-05-22 02:08:58,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:08:58,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:58,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:08:58,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:58,859 INFO L87 Difference]: Start difference. First operand 13472 states and 71320 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (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 32033 states and 160260 transitions. [2021-05-22 02:08:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:08:59,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:08:59,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:59,185 INFO L225 Difference]: With dead ends: 32033 [2021-05-22 02:08:59,186 INFO L226 Difference]: Without dead ends: 31084 [2021-05-22 02:08:59,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:00,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31084 states. [2021-05-22 02:09:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31084 to 13286. [2021-05-22 02:09:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13286 states, 13285 states have (on average 5.311629657508468) internal successors, (70565), 13285 states have internal predecessors, (70565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13286 states to 13286 states and 70565 transitions. [2021-05-22 02:09:00,438 INFO L78 Accepts]: Start accepts. Automaton has 13286 states and 70565 transitions. Word has length 33 [2021-05-22 02:09:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:00,438 INFO L482 AbstractCegarLoop]: Abstraction has 13286 states and 70565 transitions. [2021-05-22 02:09:00,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 13286 states and 70565 transitions. [2021-05-22 02:09:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:00,465 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:00,465 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, 1, 1, 1, 1] [2021-05-22 02:09:00,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-05-22 02:09:00,465 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:00,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:00,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1229165661, now seen corresponding path program 355 times [2021-05-22 02:09:00,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:00,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620497214] [2021-05-22 02:09:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:00,605 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 02:09:00,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:00,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620497214] [2021-05-22 02:09:00,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620497214] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:00,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:00,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:00,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316006227] [2021-05-22 02:09:00,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:00,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:00,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:00,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:00,606 INFO L87 Difference]: Start difference. First operand 13286 states and 70565 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:00,806 INFO L93 Difference]: Finished difference Result 32871 states and 164234 transitions. [2021-05-22 02:09:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:00,807 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:00,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:00,913 INFO L225 Difference]: With dead ends: 32871 [2021-05-22 02:09:00,913 INFO L226 Difference]: Without dead ends: 31977 [2021-05-22 02:09:00,913 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 147.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:01,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31977 states. [2021-05-22 02:09:02,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31977 to 13700. [2021-05-22 02:09:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13700 states, 13699 states have (on average 5.282794364552157) internal successors, (72369), 13699 states have internal predecessors, (72369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13700 states to 13700 states and 72369 transitions. [2021-05-22 02:09:02,206 INFO L78 Accepts]: Start accepts. Automaton has 13700 states and 72369 transitions. Word has length 33 [2021-05-22 02:09:02,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:02,206 INFO L482 AbstractCegarLoop]: Abstraction has 13700 states and 72369 transitions. [2021-05-22 02:09:02,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:02,206 INFO L276 IsEmpty]: Start isEmpty. Operand 13700 states and 72369 transitions. [2021-05-22 02:09:02,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:02,233 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:02,233 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, 1, 1, 1, 1] [2021-05-22 02:09:02,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-05-22 02:09:02,233 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:02,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:02,233 INFO L82 PathProgramCache]: Analyzing trace with hash -793895877, now seen corresponding path program 356 times [2021-05-22 02:09:02,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:02,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878549909] [2021-05-22 02:09:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:02,374 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 02:09:02,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:02,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878549909] [2021-05-22 02:09:02,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878549909] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:02,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:02,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:02,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931993367] [2021-05-22 02:09:02,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:02,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:02,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:02,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:02,375 INFO L87 Difference]: Start difference. First operand 13700 states and 72369 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:02,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:02,795 INFO L93 Difference]: Finished difference Result 32742 states and 163465 transitions. [2021-05-22 02:09:02,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:02,795 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:02,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:02,892 INFO L225 Difference]: With dead ends: 32742 [2021-05-22 02:09:02,892 INFO L226 Difference]: Without dead ends: 31722 [2021-05-22 02:09:02,892 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31722 states. [2021-05-22 02:09:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31722 to 13445. [2021-05-22 02:09:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13445 states, 13444 states have (on average 5.297456114251711) internal successors, (71219), 13444 states have internal predecessors, (71219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13445 states to 13445 states and 71219 transitions. [2021-05-22 02:09:03,939 INFO L78 Accepts]: Start accepts. Automaton has 13445 states and 71219 transitions. Word has length 33 [2021-05-22 02:09:03,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:03,939 INFO L482 AbstractCegarLoop]: Abstraction has 13445 states and 71219 transitions. [2021-05-22 02:09:03,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 13445 states and 71219 transitions. [2021-05-22 02:09:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:04,110 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:04,110 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, 1, 1, 1, 1] [2021-05-22 02:09:04,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-05-22 02:09:04,110 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:04,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:04,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1607754565, now seen corresponding path program 357 times [2021-05-22 02:09:04,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:04,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412590224] [2021-05-22 02:09:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:04,249 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 02:09:04,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:04,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412590224] [2021-05-22 02:09:04,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412590224] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:04,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:04,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:04,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861939942] [2021-05-22 02:09:04,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:04,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:04,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:04,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:04,250 INFO L87 Difference]: Start difference. First operand 13445 states and 71219 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:04,455 INFO L93 Difference]: Finished difference Result 32804 states and 163843 transitions. [2021-05-22 02:09:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:04,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:04,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:04,555 INFO L225 Difference]: With dead ends: 32804 [2021-05-22 02:09:04,555 INFO L226 Difference]: Without dead ends: 31910 [2021-05-22 02:09:04,555 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 147.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:05,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31910 states. [2021-05-22 02:09:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31910 to 13635. [2021-05-22 02:09:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13635 states, 13634 states have (on average 5.279741821915799) internal successors, (71984), 13634 states have internal predecessors, (71984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13635 states to 13635 states and 71984 transitions. [2021-05-22 02:09:05,771 INFO L78 Accepts]: Start accepts. Automaton has 13635 states and 71984 transitions. Word has length 33 [2021-05-22 02:09:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:05,772 INFO L482 AbstractCegarLoop]: Abstraction has 13635 states and 71984 transitions. [2021-05-22 02:09:05,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 13635 states and 71984 transitions. [2021-05-22 02:09:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:05,798 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:05,798 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, 1, 1, 1, 1] [2021-05-22 02:09:05,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-05-22 02:09:05,799 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:05,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:05,799 INFO L82 PathProgramCache]: Analyzing trace with hash -2085407557, now seen corresponding path program 358 times [2021-05-22 02:09:05,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:05,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696801545] [2021-05-22 02:09:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:05,937 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 02:09:05,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:05,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696801545] [2021-05-22 02:09:05,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696801545] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:05,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:05,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:05,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276894999] [2021-05-22 02:09:05,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:05,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:05,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:05,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:05,938 INFO L87 Difference]: Start difference. First operand 13635 states and 71984 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:06,170 INFO L93 Difference]: Finished difference Result 32673 states and 163070 transitions. [2021-05-22 02:09:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:06,171 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:06,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:06,265 INFO L225 Difference]: With dead ends: 32673 [2021-05-22 02:09:06,266 INFO L226 Difference]: Without dead ends: 31720 [2021-05-22 02:09:06,266 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31720 states. [2021-05-22 02:09:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31720 to 13445. [2021-05-22 02:09:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13445 states, 13444 states have (on average 5.290389764950907) internal successors, (71124), 13444 states have internal predecessors, (71124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13445 states to 13445 states and 71124 transitions. [2021-05-22 02:09:07,481 INFO L78 Accepts]: Start accepts. Automaton has 13445 states and 71124 transitions. Word has length 33 [2021-05-22 02:09:07,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:07,481 INFO L482 AbstractCegarLoop]: Abstraction has 13445 states and 71124 transitions. [2021-05-22 02:09:07,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:07,481 INFO L276 IsEmpty]: Start isEmpty. Operand 13445 states and 71124 transitions. [2021-05-22 02:09:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:07,509 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:07,509 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:07,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-05-22 02:09:07,509 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:07,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:07,509 INFO L82 PathProgramCache]: Analyzing trace with hash -308925159, now seen corresponding path program 359 times [2021-05-22 02:09:07,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:07,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299884887] [2021-05-22 02:09:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:07,646 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 02:09:07,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:07,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299884887] [2021-05-22 02:09:07,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299884887] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:07,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:07,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:07,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706088152] [2021-05-22 02:09:07,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:07,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:07,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:07,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:07,647 INFO L87 Difference]: Start difference. First operand 13445 states and 71124 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:07,867 INFO L93 Difference]: Finished difference Result 32482 states and 162272 transitions. [2021-05-22 02:09:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:07,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:07,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:07,965 INFO L225 Difference]: With dead ends: 32482 [2021-05-22 02:09:07,965 INFO L226 Difference]: Without dead ends: 31717 [2021-05-22 02:09:07,965 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 165.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:08,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31717 states. [2021-05-22 02:09:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31717 to 13571. [2021-05-22 02:09:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13571 states, 13570 states have (on average 5.278776713338246) internal successors, (71633), 13570 states have internal predecessors, (71633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:09,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13571 states to 13571 states and 71633 transitions. [2021-05-22 02:09:09,232 INFO L78 Accepts]: Start accepts. Automaton has 13571 states and 71633 transitions. Word has length 33 [2021-05-22 02:09:09,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:09,232 INFO L482 AbstractCegarLoop]: Abstraction has 13571 states and 71633 transitions. [2021-05-22 02:09:09,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 13571 states and 71633 transitions. [2021-05-22 02:09:09,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:09,259 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:09,259 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, 1, 1, 1, 1] [2021-05-22 02:09:09,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-05-22 02:09:09,259 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:09,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:09,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1400676603, now seen corresponding path program 360 times [2021-05-22 02:09:09,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:09,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476657216] [2021-05-22 02:09:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:09,398 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 02:09:09,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:09,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476657216] [2021-05-22 02:09:09,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476657216] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:09,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:09,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:09,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254904313] [2021-05-22 02:09:09,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:09,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:09,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:09,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:09,399 INFO L87 Difference]: Start difference. First operand 13571 states and 71633 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:09,644 INFO L93 Difference]: Finished difference Result 32480 states and 162141 transitions. [2021-05-22 02:09:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:09,644 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:09,745 INFO L225 Difference]: With dead ends: 32480 [2021-05-22 02:09:09,745 INFO L226 Difference]: Without dead ends: 31299 [2021-05-22 02:09:09,745 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31299 states. [2021-05-22 02:09:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31299 to 13153. [2021-05-22 02:09:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13153 states, 13152 states have (on average 5.329227493917275) internal successors, (70090), 13152 states have internal predecessors, (70090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13153 states to 13153 states and 70090 transitions. [2021-05-22 02:09:11,103 INFO L78 Accepts]: Start accepts. Automaton has 13153 states and 70090 transitions. Word has length 33 [2021-05-22 02:09:11,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:11,103 INFO L482 AbstractCegarLoop]: Abstraction has 13153 states and 70090 transitions. [2021-05-22 02:09:11,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 13153 states and 70090 transitions. [2021-05-22 02:09:11,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:11,132 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:11,132 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, 1, 1, 1, 1] [2021-05-22 02:09:11,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-05-22 02:09:11,132 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:11,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:11,132 INFO L82 PathProgramCache]: Analyzing trace with hash 60744253, now seen corresponding path program 361 times [2021-05-22 02:09:11,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:11,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864296388] [2021-05-22 02:09:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:11,269 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 02:09:11,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:11,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864296388] [2021-05-22 02:09:11,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864296388] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:11,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:11,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:11,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656444701] [2021-05-22 02:09:11,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:11,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:11,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:11,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:11,270 INFO L87 Difference]: Start difference. First operand 13153 states and 70090 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:11,497 INFO L93 Difference]: Finished difference Result 30141 states and 151826 transitions. [2021-05-22 02:09:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:11,497 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:11,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:11,830 INFO L225 Difference]: With dead ends: 30141 [2021-05-22 02:09:11,830 INFO L226 Difference]: Without dead ends: 29382 [2021-05-22 02:09:11,831 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:12,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29382 states. [2021-05-22 02:09:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29382 to 13371. [2021-05-22 02:09:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.3225878833208675) internal successors, (71163), 13370 states have internal predecessors, (71163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71163 transitions. [2021-05-22 02:09:12,835 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71163 transitions. Word has length 33 [2021-05-22 02:09:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:12,835 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71163 transitions. [2021-05-22 02:09:12,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:12,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71163 transitions. [2021-05-22 02:09:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:12,861 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:12,861 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, 1, 1, 1, 1] [2021-05-22 02:09:12,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-05-22 02:09:12,861 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:12,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:12,862 INFO L82 PathProgramCache]: Analyzing trace with hash -786052709, now seen corresponding path program 362 times [2021-05-22 02:09:12,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:12,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127333660] [2021-05-22 02:09:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:12,997 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 02:09:12,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:12,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127333660] [2021-05-22 02:09:12,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127333660] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:12,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:12,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:12,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774559717] [2021-05-22 02:09:12,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:12,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:12,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:12,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:12,998 INFO L87 Difference]: Start difference. First operand 13371 states and 71163 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:13,295 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2021-05-22 02:09:13,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:13,393 INFO L93 Difference]: Finished difference Result 30133 states and 151678 transitions. [2021-05-22 02:09:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:13,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:13,491 INFO L225 Difference]: With dead ends: 30133 [2021-05-22 02:09:13,492 INFO L226 Difference]: Without dead ends: 29262 [2021-05-22 02:09:13,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 346.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29262 states. [2021-05-22 02:09:14,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29262 to 13251. [2021-05-22 02:09:14,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 5.329433962264151) internal successors, (70615), 13250 states have internal predecessors, (70615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:14,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70615 transitions. [2021-05-22 02:09:14,522 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70615 transitions. Word has length 33 [2021-05-22 02:09:14,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:14,523 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70615 transitions. [2021-05-22 02:09:14,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70615 transitions. [2021-05-22 02:09:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:14,687 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:14,687 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, 1, 1, 1, 1] [2021-05-22 02:09:14,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-05-22 02:09:14,688 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:14,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1962317285, now seen corresponding path program 363 times [2021-05-22 02:09:14,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:14,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002828023] [2021-05-22 02:09:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:14,821 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 02:09:14,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:14,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002828023] [2021-05-22 02:09:14,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002828023] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:14,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:14,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:14,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117685987] [2021-05-22 02:09:14,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:14,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:14,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:14,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:14,822 INFO L87 Difference]: Start difference. First operand 13251 states and 70615 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:15,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:15,040 INFO L93 Difference]: Finished difference Result 30117 states and 151670 transitions. [2021-05-22 02:09:15,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:15,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:15,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:15,132 INFO L225 Difference]: With dead ends: 30117 [2021-05-22 02:09:15,132 INFO L226 Difference]: Without dead ends: 29358 [2021-05-22 02:09:15,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:15,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29358 states. [2021-05-22 02:09:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29358 to 13363. [2021-05-22 02:09:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.319488100583745) internal successors, (71079), 13362 states have internal predecessors, (71079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71079 transitions. [2021-05-22 02:09:16,345 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71079 transitions. Word has length 33 [2021-05-22 02:09:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:16,345 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71079 transitions. [2021-05-22 02:09:16,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71079 transitions. [2021-05-22 02:09:16,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:16,372 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:16,372 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, 1, 1, 1, 1] [2021-05-22 02:09:16,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-05-22 02:09:16,372 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:16,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:16,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1536623131, now seen corresponding path program 364 times [2021-05-22 02:09:16,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:16,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773261231] [2021-05-22 02:09:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:16,507 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 02:09:16,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:16,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773261231] [2021-05-22 02:09:16,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773261231] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:16,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:16,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:16,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845475548] [2021-05-22 02:09:16,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:16,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:16,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:16,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:16,508 INFO L87 Difference]: Start difference. First operand 13363 states and 71079 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:16,740 INFO L93 Difference]: Finished difference Result 30093 states and 151466 transitions. [2021-05-22 02:09:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:16,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:16,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:16,832 INFO L225 Difference]: With dead ends: 30093 [2021-05-22 02:09:16,832 INFO L226 Difference]: Without dead ends: 29246 [2021-05-22 02:09:16,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29246 states. [2021-05-22 02:09:17,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29246 to 13251. [2021-05-22 02:09:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 5.3252075471698115) internal successors, (70559), 13250 states have internal predecessors, (70559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70559 transitions. [2021-05-22 02:09:18,022 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70559 transitions. Word has length 33 [2021-05-22 02:09:18,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:18,022 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70559 transitions. [2021-05-22 02:09:18,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70559 transitions. [2021-05-22 02:09:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:18,049 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:18,049 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, 1, 1, 1, 1] [2021-05-22 02:09:18,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-05-22 02:09:18,049 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:18,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:18,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1475901945, now seen corresponding path program 365 times [2021-05-22 02:09:18,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:18,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816475544] [2021-05-22 02:09:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:18,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:18,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816475544] [2021-05-22 02:09:18,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816475544] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:18,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:18,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:18,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861773800] [2021-05-22 02:09:18,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:18,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:18,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:18,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:18,188 INFO L87 Difference]: Start difference. First operand 13251 states and 70559 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:18,441 INFO L93 Difference]: Finished difference Result 30101 states and 151558 transitions. [2021-05-22 02:09:18,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:18,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:18,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:18,533 INFO L225 Difference]: With dead ends: 30101 [2021-05-22 02:09:18,533 INFO L226 Difference]: Without dead ends: 29350 [2021-05-22 02:09:18,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29350 states. [2021-05-22 02:09:19,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29350 to 13363. [2021-05-22 02:09:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.315297111210897) internal successors, (71023), 13362 states have internal predecessors, (71023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:19,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71023 transitions. [2021-05-22 02:09:19,778 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71023 transitions. Word has length 33 [2021-05-22 02:09:19,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:19,778 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71023 transitions. [2021-05-22 02:09:19,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:19,778 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71023 transitions. [2021-05-22 02:09:19,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:19,806 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:19,806 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, 1, 1, 1, 1] [2021-05-22 02:09:19,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-05-22 02:09:19,806 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:19,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:19,806 INFO L82 PathProgramCache]: Analyzing trace with hash 994999899, now seen corresponding path program 366 times [2021-05-22 02:09:19,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:19,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427426426] [2021-05-22 02:09:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:19,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:19,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427426426] [2021-05-22 02:09:19,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427426426] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:19,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:19,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:19,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809822745] [2021-05-22 02:09:19,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:19,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:19,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:19,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:19,945 INFO L87 Difference]: Start difference. First operand 13363 states and 71023 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:20,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:20,166 INFO L93 Difference]: Finished difference Result 30085 states and 151382 transitions. [2021-05-22 02:09:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:20,167 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:20,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:20,264 INFO L225 Difference]: With dead ends: 30085 [2021-05-22 02:09:20,264 INFO L226 Difference]: Without dead ends: 29182 [2021-05-22 02:09:20,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 166.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29182 states. [2021-05-22 02:09:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29182 to 13195. [2021-05-22 02:09:21,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13195 states, 13194 states have (on average 5.330225860239503) internal successors, (70327), 13194 states have internal predecessors, (70327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 70327 transitions. [2021-05-22 02:09:21,480 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 70327 transitions. Word has length 33 [2021-05-22 02:09:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:21,480 INFO L482 AbstractCegarLoop]: Abstraction has 13195 states and 70327 transitions. [2021-05-22 02:09:21,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:21,480 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 70327 transitions. [2021-05-22 02:09:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:21,506 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:21,506 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:21,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-05-22 02:09:21,506 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:21,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:21,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1180680515, now seen corresponding path program 367 times [2021-05-22 02:09:21,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:21,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935386862] [2021-05-22 02:09:21,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:21,641 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 02:09:21,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:21,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935386862] [2021-05-22 02:09:21,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935386862] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:21,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:21,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:21,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401506204] [2021-05-22 02:09:21,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:21,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:21,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:21,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:21,642 INFO L87 Difference]: Start difference. First operand 13195 states and 70327 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:21,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:21,880 INFO L93 Difference]: Finished difference Result 30195 states and 152015 transitions. [2021-05-22 02:09:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:21,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:21,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:21,972 INFO L225 Difference]: With dead ends: 30195 [2021-05-22 02:09:21,972 INFO L226 Difference]: Without dead ends: 29436 [2021-05-22 02:09:21,972 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29436 states. [2021-05-22 02:09:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29436 to 13375. [2021-05-22 02:09:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13375 states, 13374 states have (on average 5.320397786750411) internal successors, (71155), 13374 states have internal predecessors, (71155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13375 states to 13375 states and 71155 transitions. [2021-05-22 02:09:23,207 INFO L78 Accepts]: Start accepts. Automaton has 13375 states and 71155 transitions. Word has length 33 [2021-05-22 02:09:23,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:23,207 INFO L482 AbstractCegarLoop]: Abstraction has 13375 states and 71155 transitions. [2021-05-22 02:09:23,207 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:23,207 INFO L276 IsEmpty]: Start isEmpty. Operand 13375 states and 71155 transitions. [2021-05-22 02:09:23,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:23,238 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:23,238 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, 1, 1, 1, 1] [2021-05-22 02:09:23,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-05-22 02:09:23,238 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:23,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:23,238 INFO L82 PathProgramCache]: Analyzing trace with hash -2027477477, now seen corresponding path program 368 times [2021-05-22 02:09:23,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:23,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424848698] [2021-05-22 02:09:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:23,375 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 02:09:23,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:23,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424848698] [2021-05-22 02:09:23,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424848698] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:23,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:23,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:23,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132608489] [2021-05-22 02:09:23,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:23,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:23,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:23,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:23,376 INFO L87 Difference]: Start difference. First operand 13375 states and 71155 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:23,586 INFO L93 Difference]: Finished difference Result 30187 states and 151867 transitions. [2021-05-22 02:09:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:23,586 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:23,897 INFO L225 Difference]: With dead ends: 30187 [2021-05-22 02:09:23,897 INFO L226 Difference]: Without dead ends: 29316 [2021-05-22 02:09:23,897 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29316 states. [2021-05-22 02:09:24,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29316 to 13255. [2021-05-22 02:09:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13255 states, 13254 states have (on average 5.326920175041497) internal successors, (70603), 13254 states have internal predecessors, (70603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13255 states to 13255 states and 70603 transitions. [2021-05-22 02:09:24,923 INFO L78 Accepts]: Start accepts. Automaton has 13255 states and 70603 transitions. Word has length 33 [2021-05-22 02:09:24,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:24,923 INFO L482 AbstractCegarLoop]: Abstraction has 13255 states and 70603 transitions. [2021-05-22 02:09:24,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:24,923 INFO L276 IsEmpty]: Start isEmpty. Operand 13255 states and 70603 transitions. [2021-05-22 02:09:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-22 02:09:24,950 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:24,950 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, 1, 1, 1, 1] [2021-05-22 02:09:24,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-05-22 02:09:24,950 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:24,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:24,950 INFO L82 PathProgramCache]: Analyzing trace with hash 252278461, now seen corresponding path program 369 times [2021-05-22 02:09:24,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:24,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835003178] [2021-05-22 02:09:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:25,084 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 02:09:25,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:25,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835003178] [2021-05-22 02:09:25,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835003178] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:25,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:25,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 02:09:25,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800211459] [2021-05-22 02:09:25,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-22 02:09:25,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:25,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-22 02:09:25,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:25,085 INFO L87 Difference]: Start difference. First operand 13255 states and 70603 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:25,401 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-05-22 02:09:25,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:25,496 INFO L93 Difference]: Finished difference Result 30213 states and 152016 transitions. [2021-05-22 02:09:25,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-22 02:09:25,496 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-22 02:09:25,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2021-05-22 02:09:25,586 INFO L225 Difference]: With dead ends: 30213 [2021-05-22 02:09:25,587 INFO L226 Difference]: Without dead ends: 29454 [2021-05-22 02:09:25,587 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 348.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-22 02:09:26,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29454 states. [2021-05-22 02:09:26,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-05-22 02:09:26,280 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 02:09:26,280 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (1/2) [2021-05-22 02:09:26,281 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-05-22 02:09:26,282 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 02:09:26,282 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 02:09:26,282 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 02:09:26,282 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 02:09:26,282 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 02:09:26,282 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 02:09:26,282 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 02:09:26,282 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 02:09:26,284 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 99 transitions, 430 flow [2021-05-22 02:09:26,285 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 02:09:26,285 INFO L315 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (2/2) [2021-05-22 02:09:26,285 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-22 02:09:26,286 WARN L196 ceAbstractionStarter]: Timeout [2021-05-22 02:09:26,287 INFO L202 PluginConnector]: Adding new model example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 02:09:26 BasicIcfg [2021-05-22 02:09:26,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 02:09:26,287 INFO L168 Benchmark]: Toolchain (without parser) took 720678.48 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 331.1 MB in the beginning and 11.3 GB in the end (delta: -11.0 GB). Peak memory consumption was 4.7 GB. Max. memory is 16.0 GB. [2021-05-22 02:09:26,287 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 352.3 MB. Free memory was 332.2 MB in the beginning and 332.1 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 02:09:26,288 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.45 ms. Allocated memory is still 352.3 MB. Free memory was 331.1 MB in the beginning and 329.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 02:09:26,288 INFO L168 Benchmark]: Boogie Preprocessor took 12.17 ms. Allocated memory is still 352.3 MB. Free memory was 329.6 MB in the beginning and 328.7 MB in the end (delta: 921.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 02:09:26,288 INFO L168 Benchmark]: RCFGBuilder took 222.42 ms. Allocated memory is still 352.3 MB. Free memory was 328.6 MB in the beginning and 316.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-05-22 02:09:26,288 INFO L168 Benchmark]: TraceAbstraction took 720419.03 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 316.4 MB in the beginning and 11.3 GB in the end (delta: -11.0 GB). Peak memory consumption was 4.7 GB. Max. memory is 16.0 GB. [2021-05-22 02:09:26,288 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 0.13 ms. Allocated memory is still 352.3 MB. Free memory was 332.2 MB in the beginning and 332.1 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.45 ms. Allocated memory is still 352.3 MB. Free memory was 331.1 MB in the beginning and 329.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.17 ms. Allocated memory is still 352.3 MB. Free memory was 329.6 MB in the beginning and 328.7 MB in the end (delta: 921.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 222.42 ms. Allocated memory is still 352.3 MB. Free memory was 328.6 MB in the beginning and 316.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 720419.03 ms. Allocated memory was 352.3 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 316.4 MB in the beginning and 11.3 GB in the end (delta: -11.0 GB). Peak memory consumption was 4.7 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 29]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 17 procedures, 76 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 720175.5ms, OverallIterations: 376, TraceHistogramMax: 1, EmptinessCheckTime: 14138.2ms, AutomataDifference: 155644.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12201.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 59103 SDtfs, 73263 SDslu, 150749 SDs, 0 SdLazy, 26032 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16304.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3711 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 3328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2214 ImplicationChecksByTransitivity, 70312.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=68819occurred in iteration=0, InterpolantAutomatonStates: 3711, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 473891.3ms AutomataMinimizationTime, 376 MinimizatonAttempts, 6447332 StatesRemovedByMinimization, 368 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 138.8ms SsaConstructionTime, 300.9ms SatisfiabilityAnalysisTime, 62612.2ms InterpolantComputationTime, 12408 NumberOfCodeBlocks, 12408 NumberOfCodeBlocksAsserted, 376 NumberOfCheckSat, 12032 ConstructedInterpolants, 0 QuantifiedInterpolants, 424344 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 376 InterpolantComputations, 376 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 17 procedures, 76 locations, 9 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: 2.4ms, 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