/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 20:24:31,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 20:24:31,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 20:24:31,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 20:24:31,481 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.epf [2021-05-21 20:24:31,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 20:24:31,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 20:24:31,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 20:24:31,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 20:24:31,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 20:24:31,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 20:24:31,502 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 20:24:31,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 20:24:31,502 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 20:24:31,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 20:24:31,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 20:24:31,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 20:24:31,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 20:24:31,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 20:24:31,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 20:24:31,503 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 20:24:31,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 20:24:31,503 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 20:24:31,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 20:24:31,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 20:24:31,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 20:24:31,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 20:24:31,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 20:24:31,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 20:24:31,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 20:24:31,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 20:24:31,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 20:24:31,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 20:24:31,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 20:24:31,504 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 20:24:31,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 20:24:31,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 20:24:31,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 20:24:31,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 20:24:31,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 20:24:31,765 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-21 20:24:31,766 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-21 20:24:31,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl [2021-05-21 20:24:31,767 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl' [2021-05-21 20:24:31,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 20:24:31,786 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-21 20:24:31,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 20:24:31,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 20:24:31,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 20:24:31,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:24:31" (1/1) ... [2021-05-21 20:24:31,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:24:31" (1/1) ... [2021-05-21 20:24:31,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 20:24:31,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 20:24:31,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 20:24:31,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 20:24:31,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:24:31" (1/1) ... [2021-05-21 20:24:31,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:24:31" (1/1) ... [2021-05-21 20:24:31,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:24:31" (1/1) ... [2021-05-21 20:24:31,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:24:31" (1/1) ... [2021-05-21 20:24:31,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:24:31" (1/1) ... [2021-05-21 20:24:31,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:24:31" (1/1) ... [2021-05-21 20:24:31,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:24:31" (1/1) ... [2021-05-21 20:24:31,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 20:24:31,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 20:24:31,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 20:24:31,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 20:24:31,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:24:31" (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 [2021-05-21 20:24:31,865 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-05-21 20:24:31,866 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-05-21 20:24:31,866 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-05-21 20:24:31,866 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-05-21 20:24:31,866 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-05-21 20:24:31,866 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-05-21 20:24:31,866 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-05-21 20:24:31,866 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-05-21 20:24:31,866 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-05-21 20:24:31,866 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-05-21 20:24:31,866 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-05-21 20:24:31,866 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-05-21 20:24:31,867 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-05-21 20:24:31,867 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-05-21 20:24:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-05-21 20:24:31,867 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-21 20:24:31,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 20:24:31,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 20:24:31,868 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-05-21 20:24:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-05-21 20:24:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-05-21 20:24:31,868 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-05-21 20:24:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-05-21 20:24:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-05-21 20:24:31,868 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-05-21 20:24:31,869 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-05-21 20:24:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-05-21 20:24:31,869 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 20:24:31,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 20:24:31,993 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-21 20:24:32,018 INFO L202 PluginConnector]: Adding new model example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:24:32 BoogieIcfgContainer [2021-05-21 20:24:32,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 20:24:32,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 20:24:32,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 20:24:32,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 20:24:32,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 08:24:31" (1/2) ... [2021-05-21 20:24:32,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610955c6 and model type example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 08:24:32, skipping insertion in model container [2021-05-21 20:24:32,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 08:24:32" (2/2) ... [2021-05-21 20:24:32,023 INFO L111 eAbstractionObserver]: Analyzing ICFG example_8.bpl [2021-05-21 20:24:32,026 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 20:24:32,026 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 20:24:32,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 20:24:32,027 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 20:24:32,128 INFO L149 ThreadInstanceAdder]: Constructed 64 joinOtherThreadTransitions. [2021-05-21 20:24:32,142 INFO L255 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-05-21 20:24:32,161 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 20:24:32,161 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 20:24:32,161 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 20:24:32,161 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 20:24:32,161 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 20:24:32,161 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 20:24:32,161 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 20:24:32,161 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 20:24:32,169 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 99 transitions, 430 flow [2021-05-21 20:24:43,973 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) [2021-05-21 20:24:44,096 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) [2021-05-21 20:24:44,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:24:44,726 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:44,727 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:44,727 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:24:44,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:44,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1841314055, now seen corresponding path program 1 times [2021-05-21 20:24:44,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:44,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837049278] [2021-05-21 20:24:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:44,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:44,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837049278] [2021-05-21 20:24:44,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837049278] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:44,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:44,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:24:44,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374933332] [2021-05-21 20:24:44,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:24:44,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:44,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:24:44,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:24:44,952 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) [2021-05-21 20:24:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:45,756 INFO L93 Difference]: Finished difference Result 66632 states and 393219 transitions. [2021-05-21 20:24:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:24:45,757 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 [2021-05-21 20:24:45,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:46,409 INFO L225 Difference]: With dead ends: 66632 [2021-05-21 20:24:46,409 INFO L226 Difference]: Without dead ends: 66630 [2021-05-21 20:24:46,410 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:24:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66630 states. [2021-05-21 20:24:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66630 to 66630. [2021-05-21 20:24:50,100 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) [2021-05-21 20:24:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66630 states to 66630 states and 393217 transitions. [2021-05-21 20:24:51,013 INFO L78 Accepts]: Start accepts. Automaton has 66630 states and 393217 transitions. Word has length 33 [2021-05-21 20:24:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:51,014 INFO L482 AbstractCegarLoop]: Abstraction has 66630 states and 393217 transitions. [2021-05-21 20:24:51,014 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) [2021-05-21 20:24:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 66630 states and 393217 transitions. [2021-05-21 20:24:51,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:24:51,528 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:51,528 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:51,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 20:24:51,529 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:24:51,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:51,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1230509281, now seen corresponding path program 1 times [2021-05-21 20:24:51,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:51,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574055170] [2021-05-21 20:24:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:51,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:51,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574055170] [2021-05-21 20:24:51,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574055170] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:51,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:51,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:24:51,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087682864] [2021-05-21 20:24:51,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:24:51,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:51,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:24:51,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:24:51,567 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) [2021-05-21 20:24:52,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:52,131 INFO L93 Difference]: Finished difference Result 59340 states and 340729 transitions. [2021-05-21 20:24:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:24:52,131 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 [2021-05-21 20:24:52,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:52,409 INFO L225 Difference]: With dead ends: 59340 [2021-05-21 20:24:52,410 INFO L226 Difference]: Without dead ends: 59340 [2021-05-21 20:24:52,410 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 [2021-05-21 20:24:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59340 states. [2021-05-21 20:24:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59340 to 59340. [2021-05-21 20:24:55,548 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) [2021-05-21 20:24:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59340 states to 59340 states and 340729 transitions. [2021-05-21 20:24:56,213 INFO L78 Accepts]: Start accepts. Automaton has 59340 states and 340729 transitions. Word has length 33 [2021-05-21 20:24:56,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:56,213 INFO L482 AbstractCegarLoop]: Abstraction has 59340 states and 340729 transitions. [2021-05-21 20:24:56,213 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) [2021-05-21 20:24:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 59340 states and 340729 transitions. [2021-05-21 20:24:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:24:56,410 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:56,410 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] [2021-05-21 20:24:56,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 20:24:56,411 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:24:56,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:56,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1462759847, now seen corresponding path program 1 times [2021-05-21 20:24:56,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:56,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530340146] [2021-05-21 20:24:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:56,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:56,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530340146] [2021-05-21 20:24:56,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530340146] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:56,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:56,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:24:56,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308759348] [2021-05-21 20:24:56,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:24:56,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:56,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:24:56,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:24:56,455 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) [2021-05-21 20:24:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:24:56,762 INFO L93 Difference]: Finished difference Result 43707 states and 246391 transitions. [2021-05-21 20:24:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:24:56,767 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 [2021-05-21 20:24:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:24:57,393 INFO L225 Difference]: With dead ends: 43707 [2021-05-21 20:24:57,393 INFO L226 Difference]: Without dead ends: 43707 [2021-05-21 20:24:57,394 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 [2021-05-21 20:24:58,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43707 states. [2021-05-21 20:24:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43707 to 43707. [2021-05-21 20:24:59,561 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) [2021-05-21 20:24:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43707 states to 43707 states and 246391 transitions. [2021-05-21 20:24:59,735 INFO L78 Accepts]: Start accepts. Automaton has 43707 states and 246391 transitions. Word has length 33 [2021-05-21 20:24:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:24:59,735 INFO L482 AbstractCegarLoop]: Abstraction has 43707 states and 246391 transitions. [2021-05-21 20:24:59,736 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) [2021-05-21 20:24:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 43707 states and 246391 transitions. [2021-05-21 20:24:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:24:59,832 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:24:59,832 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:24:59,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 20:24:59,832 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:24:59,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:24:59,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1828753721, now seen corresponding path program 1 times [2021-05-21 20:24:59,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:24:59,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602477463] [2021-05-21 20:24:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:24:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:24:59,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:24:59,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:24:59,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602477463] [2021-05-21 20:24:59,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602477463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:24:59,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:24:59,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:24:59,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459071904] [2021-05-21 20:24:59,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:24:59,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:24:59,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:24:59,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:24:59,871 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) [2021-05-21 20:25:00,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:00,373 INFO L93 Difference]: Finished difference Result 34230 states and 187342 transitions. [2021-05-21 20:25:00,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:25:00,373 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 [2021-05-21 20:25:00,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:00,506 INFO L225 Difference]: With dead ends: 34230 [2021-05-21 20:25:00,507 INFO L226 Difference]: Without dead ends: 34230 [2021-05-21 20:25:00,507 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:25:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34230 states. [2021-05-21 20:25:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34230 to 34230. [2021-05-21 20:25:02,263 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) [2021-05-21 20:25:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34230 states to 34230 states and 187342 transitions. [2021-05-21 20:25:02,383 INFO L78 Accepts]: Start accepts. Automaton has 34230 states and 187342 transitions. Word has length 33 [2021-05-21 20:25:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:02,383 INFO L482 AbstractCegarLoop]: Abstraction has 34230 states and 187342 transitions. [2021-05-21 20:25:02,383 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) [2021-05-21 20:25:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 34230 states and 187342 transitions. [2021-05-21 20:25:02,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:02,459 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:02,459 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:02,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 20:25:02,459 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:02,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:02,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1417363893, now seen corresponding path program 1 times [2021-05-21 20:25:02,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:02,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795894560] [2021-05-21 20:25:02,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:02,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:02,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795894560] [2021-05-21 20:25:02,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795894560] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:02,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:02,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:25:02,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131242688] [2021-05-21 20:25:02,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:25:02,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:02,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:25:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:25:02,477 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) [2021-05-21 20:25:02,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:02,932 INFO L93 Difference]: Finished difference Result 24672 states and 133261 transitions. [2021-05-21 20:25:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:25:02,933 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 [2021-05-21 20:25:02,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:03,057 INFO L225 Difference]: With dead ends: 24672 [2021-05-21 20:25:03,058 INFO L226 Difference]: Without dead ends: 24672 [2021-05-21 20:25:03,058 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:25:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24672 states. [2021-05-21 20:25:04,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24672 to 24672. [2021-05-21 20:25:04,473 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) [2021-05-21 20:25:04,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24672 states to 24672 states and 133261 transitions. [2021-05-21 20:25:04,558 INFO L78 Accepts]: Start accepts. Automaton has 24672 states and 133261 transitions. Word has length 33 [2021-05-21 20:25:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:04,559 INFO L482 AbstractCegarLoop]: Abstraction has 24672 states and 133261 transitions. [2021-05-21 20:25:04,559 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) [2021-05-21 20:25:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 24672 states and 133261 transitions. [2021-05-21 20:25:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:04,615 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:04,615 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:04,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 20:25:04,615 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:04,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:04,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1862524909, now seen corresponding path program 1 times [2021-05-21 20:25:04,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:04,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862908164] [2021-05-21 20:25:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:04,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:04,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862908164] [2021-05-21 20:25:04,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862908164] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:04,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:04,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:25:04,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324201075] [2021-05-21 20:25:04,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:25:04,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:04,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:25:04,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:25:04,639 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) [2021-05-21 20:25:04,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:04,740 INFO L93 Difference]: Finished difference Result 17820 states and 95581 transitions. [2021-05-21 20:25:04,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:25:04,740 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 [2021-05-21 20:25:04,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:04,801 INFO L225 Difference]: With dead ends: 17820 [2021-05-21 20:25:04,801 INFO L226 Difference]: Without dead ends: 17820 [2021-05-21 20:25:04,802 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:25:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17820 states. [2021-05-21 20:25:05,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17820 to 17820. [2021-05-21 20:25:06,014 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) [2021-05-21 20:25:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17820 states to 17820 states and 95581 transitions. [2021-05-21 20:25:06,082 INFO L78 Accepts]: Start accepts. Automaton has 17820 states and 95581 transitions. Word has length 33 [2021-05-21 20:25:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:06,083 INFO L482 AbstractCegarLoop]: Abstraction has 17820 states and 95581 transitions. [2021-05-21 20:25:06,083 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) [2021-05-21 20:25:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 17820 states and 95581 transitions. [2021-05-21 20:25:06,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:06,121 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:06,121 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] [2021-05-21 20:25:06,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 20:25:06,122 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:06,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:06,122 INFO L82 PathProgramCache]: Analyzing trace with hash -757244133, now seen corresponding path program 1 times [2021-05-21 20:25:06,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:06,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77217796] [2021-05-21 20:25:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:06,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:06,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77217796] [2021-05-21 20:25:06,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77217796] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:06,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:06,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-21 20:25:06,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436208472] [2021-05-21 20:25:06,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 20:25:06,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:06,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 20:25:06,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:25:06,157 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) [2021-05-21 20:25:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:06,240 INFO L93 Difference]: Finished difference Result 13122 states and 69985 transitions. [2021-05-21 20:25:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 20:25:06,240 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 [2021-05-21 20:25:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:06,288 INFO L225 Difference]: With dead ends: 13122 [2021-05-21 20:25:06,289 INFO L226 Difference]: Without dead ends: 13122 [2021-05-21 20:25:06,289 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 20:25:07,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13122 states. [2021-05-21 20:25:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13122 to 13122. [2021-05-21 20:25:07,347 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) [2021-05-21 20:25:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13122 states to 13122 states and 69985 transitions. [2021-05-21 20:25:07,390 INFO L78 Accepts]: Start accepts. Automaton has 13122 states and 69985 transitions. Word has length 33 [2021-05-21 20:25:07,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:07,390 INFO L482 AbstractCegarLoop]: Abstraction has 13122 states and 69985 transitions. [2021-05-21 20:25:07,390 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) [2021-05-21 20:25:07,390 INFO L276 IsEmpty]: Start isEmpty. Operand 13122 states and 69985 transitions. [2021-05-21 20:25:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:07,418 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:07,419 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:07,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 20:25:07,419 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:07,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:07,419 INFO L82 PathProgramCache]: Analyzing trace with hash 9427259, now seen corresponding path program 1 times [2021-05-21 20:25:07,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:07,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125953674] [2021-05-21 20:25:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:07,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:07,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125953674] [2021-05-21 20:25:07,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125953674] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:07,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:07,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:07,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968290601] [2021-05-21 20:25:07,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:07,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:07,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:07,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:07,779 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) [2021-05-21 20:25:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:08,041 INFO L93 Difference]: Finished difference Result 31785 states and 159982 transitions. [2021-05-21 20:25:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:08,041 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 [2021-05-21 20:25:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:08,381 INFO L225 Difference]: With dead ends: 31785 [2021-05-21 20:25:08,381 INFO L226 Difference]: Without dead ends: 31026 [2021-05-21 20:25:08,385 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 226.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:09,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31026 states. [2021-05-21 20:25:09,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31026 to 13439. [2021-05-21 20:25:09,481 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) [2021-05-21 20:25:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13439 states to 13439 states and 71604 transitions. [2021-05-21 20:25:09,523 INFO L78 Accepts]: Start accepts. Automaton has 13439 states and 71604 transitions. Word has length 33 [2021-05-21 20:25:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:09,524 INFO L482 AbstractCegarLoop]: Abstraction has 13439 states and 71604 transitions. [2021-05-21 20:25:09,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 13439 states and 71604 transitions. [2021-05-21 20:25:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:09,551 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:09,551 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:09,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 20:25:09,551 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:09,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:09,552 INFO L82 PathProgramCache]: Analyzing trace with hash -837369703, now seen corresponding path program 2 times [2021-05-21 20:25:09,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:09,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024278807] [2021-05-21 20:25:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:09,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:09,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024278807] [2021-05-21 20:25:09,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024278807] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:09,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:09,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:09,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101970891] [2021-05-21 20:25:09,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:09,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:09,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:09,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:09,969 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) [2021-05-21 20:25:10,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:10,219 INFO L93 Difference]: Finished difference Result 31777 states and 159834 transitions. [2021-05-21 20:25:10,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:10,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:10,320 INFO L225 Difference]: With dead ends: 31777 [2021-05-21 20:25:10,320 INFO L226 Difference]: Without dead ends: 30906 [2021-05-21 20:25:10,320 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 203.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:11,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30906 states. [2021-05-21 20:25:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30906 to 13319. [2021-05-21 20:25:11,511 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) [2021-05-21 20:25:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 71052 transitions. [2021-05-21 20:25:11,561 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 71052 transitions. Word has length 33 [2021-05-21 20:25:11,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:11,562 INFO L482 AbstractCegarLoop]: Abstraction has 13319 states and 71052 transitions. [2021-05-21 20:25:11,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:11,562 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 71052 transitions. [2021-05-21 20:25:11,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:11,592 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:11,592 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:11,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 20:25:11,592 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:11,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:11,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1760821563, now seen corresponding path program 3 times [2021-05-21 20:25:11,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:11,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917173629] [2021-05-21 20:25:11,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:11,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:11,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917173629] [2021-05-21 20:25:11,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917173629] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:11,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:11,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:11,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261945243] [2021-05-21 20:25:11,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:11,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:11,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:11,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:11,838 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) [2021-05-21 20:25:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:12,170 INFO L93 Difference]: Finished difference Result 31996 states and 160881 transitions. [2021-05-21 20:25:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:12,171 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 [2021-05-21 20:25:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:12,286 INFO L225 Difference]: With dead ends: 31996 [2021-05-21 20:25:12,286 INFO L226 Difference]: Without dead ends: 31237 [2021-05-21 20:25:12,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 234.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:13,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31237 states. [2021-05-21 20:25:13,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31237 to 13507. [2021-05-21 20:25:13,445 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) [2021-05-21 20:25:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 71876 transitions. [2021-05-21 20:25:13,488 INFO L78 Accepts]: Start accepts. Automaton has 13507 states and 71876 transitions. Word has length 33 [2021-05-21 20:25:13,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:13,488 INFO L482 AbstractCegarLoop]: Abstraction has 13507 states and 71876 transitions. [2021-05-21 20:25:13,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 13507 states and 71876 transitions. [2021-05-21 20:25:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:13,516 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:13,516 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:13,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 20:25:13,516 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:13,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:13,517 INFO L82 PathProgramCache]: Analyzing trace with hash -146065093, now seen corresponding path program 4 times [2021-05-21 20:25:13,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:13,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445968958] [2021-05-21 20:25:13,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:13,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:13,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445968958] [2021-05-21 20:25:13,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445968958] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:13,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:13,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:13,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042499401] [2021-05-21 20:25:13,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:13,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:13,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:13,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:13,734 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) [2021-05-21 20:25:14,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:14,088 INFO L93 Difference]: Finished difference Result 32131 states and 161352 transitions. [2021-05-21 20:25:14,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:14,089 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 [2021-05-21 20:25:14,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:14,192 INFO L225 Difference]: With dead ends: 32131 [2021-05-21 20:25:14,192 INFO L226 Difference]: Without dead ends: 31049 [2021-05-21 20:25:14,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 191.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31049 states. [2021-05-21 20:25:15,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31049 to 13319. [2021-05-21 20:25:15,383 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) [2021-05-21 20:25:15,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 70960 transitions. [2021-05-21 20:25:15,426 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 70960 transitions. Word has length 33 [2021-05-21 20:25:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:15,427 INFO L482 AbstractCegarLoop]: Abstraction has 13319 states and 70960 transitions. [2021-05-21 20:25:15,427 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) [2021-05-21 20:25:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 70960 transitions. [2021-05-21 20:25:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:15,455 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:15,455 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] [2021-05-21 20:25:15,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-21 20:25:15,455 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:15,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:15,456 INFO L82 PathProgramCache]: Analyzing trace with hash 904073497, now seen corresponding path program 5 times [2021-05-21 20:25:15,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:15,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524053872] [2021-05-21 20:25:15,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:15,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:15,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524053872] [2021-05-21 20:25:15,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524053872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:15,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:15,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:15,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598263732] [2021-05-21 20:25:15,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:15,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:15,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:15,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:15,666 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) [2021-05-21 20:25:15,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:15,905 INFO L93 Difference]: Finished difference Result 31976 states and 160717 transitions. [2021-05-21 20:25:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:15,906 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:15,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:16,007 INFO L225 Difference]: With dead ends: 31976 [2021-05-21 20:25:16,007 INFO L226 Difference]: Without dead ends: 31225 [2021-05-21 20:25:16,008 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 199.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31225 states. [2021-05-21 20:25:17,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31225 to 13503. [2021-05-21 20:25:17,218 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) [2021-05-21 20:25:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71772 transitions. [2021-05-21 20:25:17,261 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71772 transitions. Word has length 33 [2021-05-21 20:25:17,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:17,262 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71772 transitions. [2021-05-21 20:25:17,262 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) [2021-05-21 20:25:17,262 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71772 transitions. [2021-05-21 20:25:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:17,290 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:17,290 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] [2021-05-21 20:25:17,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-21 20:25:17,290 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:17,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:17,291 INFO L82 PathProgramCache]: Analyzing trace with hash 286550139, now seen corresponding path program 6 times [2021-05-21 20:25:17,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:17,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120131297] [2021-05-21 20:25:17,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:17,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:17,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120131297] [2021-05-21 20:25:17,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120131297] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:17,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:17,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:17,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740921013] [2021-05-21 20:25:17,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:17,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:17,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:17,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:17,502 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) [2021-05-21 20:25:17,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:17,726 INFO L93 Difference]: Finished difference Result 32119 states and 161220 transitions. [2021-05-21 20:25:17,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:17,726 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:17,832 INFO L225 Difference]: With dead ends: 32119 [2021-05-21 20:25:17,832 INFO L226 Difference]: Without dead ends: 30949 [2021-05-21 20:25:17,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 186.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:18,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30949 states. [2021-05-21 20:25:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30949 to 13227. [2021-05-21 20:25:19,038 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) [2021-05-21 20:25:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 70556 transitions. [2021-05-21 20:25:19,080 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 70556 transitions. Word has length 33 [2021-05-21 20:25:19,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:19,080 INFO L482 AbstractCegarLoop]: Abstraction has 13227 states and 70556 transitions. [2021-05-21 20:25:19,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:19,081 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 70556 transitions. [2021-05-21 20:25:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:19,109 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:19,109 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:19,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-21 20:25:19,109 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:19,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:19,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1370978785, now seen corresponding path program 7 times [2021-05-21 20:25:19,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:19,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797048402] [2021-05-21 20:25:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:19,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:19,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797048402] [2021-05-21 20:25:19,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797048402] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:19,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:19,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:19,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830082711] [2021-05-21 20:25:19,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:19,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:19,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:19,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:19,281 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) [2021-05-21 20:25:19,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:19,689 INFO L93 Difference]: Finished difference Result 31442 states and 158327 transitions. [2021-05-21 20:25:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:19,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:19,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:19,790 INFO L225 Difference]: With dead ends: 31442 [2021-05-21 20:25:19,790 INFO L226 Difference]: Without dead ends: 30683 [2021-05-21 20:25:19,790 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 [2021-05-21 20:25:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30683 states. [2021-05-21 20:25:20,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30683 to 13403. [2021-05-21 20:25:20,927 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) [2021-05-21 20:25:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13403 states to 13403 states and 71364 transitions. [2021-05-21 20:25:20,968 INFO L78 Accepts]: Start accepts. Automaton has 13403 states and 71364 transitions. Word has length 33 [2021-05-21 20:25:20,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:20,968 INFO L482 AbstractCegarLoop]: Abstraction has 13403 states and 71364 transitions. [2021-05-21 20:25:20,968 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) [2021-05-21 20:25:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 13403 states and 71364 transitions. [2021-05-21 20:25:21,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:21,117 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:21,117 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] [2021-05-21 20:25:21,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-21 20:25:21,117 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:21,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:21,118 INFO L82 PathProgramCache]: Analyzing trace with hash 2077191549, now seen corresponding path program 8 times [2021-05-21 20:25:21,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:21,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713287312] [2021-05-21 20:25:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:21,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:21,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713287312] [2021-05-21 20:25:21,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713287312] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:21,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:21,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:21,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136233929] [2021-05-21 20:25:21,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:21,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:21,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:21,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:21,403 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) [2021-05-21 20:25:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:21,740 INFO L93 Difference]: Finished difference Result 31434 states and 158179 transitions. [2021-05-21 20:25:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:21,741 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 [2021-05-21 20:25:21,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:21,853 INFO L225 Difference]: With dead ends: 31434 [2021-05-21 20:25:21,853 INFO L226 Difference]: Without dead ends: 30563 [2021-05-21 20:25:21,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 228.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:22,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30563 states. [2021-05-21 20:25:22,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30563 to 13283. [2021-05-21 20:25:22,974 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) [2021-05-21 20:25:23,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 70816 transitions. [2021-05-21 20:25:23,015 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 70816 transitions. Word has length 33 [2021-05-21 20:25:23,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:23,015 INFO L482 AbstractCegarLoop]: Abstraction has 13283 states and 70816 transitions. [2021-05-21 20:25:23,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:23,016 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 70816 transitions. [2021-05-21 20:25:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:23,044 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:23,044 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:23,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-21 20:25:23,044 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:23,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:23,045 INFO L82 PathProgramCache]: Analyzing trace with hash 900926973, now seen corresponding path program 9 times [2021-05-21 20:25:23,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:23,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948298703] [2021-05-21 20:25:23,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:23,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:23,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948298703] [2021-05-21 20:25:23,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948298703] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:23,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:23,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:23,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747797751] [2021-05-21 20:25:23,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:23,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:23,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:23,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:23,199 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) [2021-05-21 20:25:23,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:23,453 INFO L93 Difference]: Finished difference Result 31418 states and 158171 transitions. [2021-05-21 20:25:23,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:23,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:23,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:23,552 INFO L225 Difference]: With dead ends: 31418 [2021-05-21 20:25:23,552 INFO L226 Difference]: Without dead ends: 30659 [2021-05-21 20:25:23,553 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 [2021-05-21 20:25:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30659 states. [2021-05-21 20:25:24,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30659 to 13395. [2021-05-21 20:25:24,673 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) [2021-05-21 20:25:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71280 transitions. [2021-05-21 20:25:24,716 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71280 transitions. Word has length 33 [2021-05-21 20:25:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:24,716 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71280 transitions. [2021-05-21 20:25:24,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71280 transitions. [2021-05-21 20:25:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:24,746 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:24,747 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:24,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-21 20:25:24,747 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:24,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:24,747 INFO L82 PathProgramCache]: Analyzing trace with hash 104900093, now seen corresponding path program 10 times [2021-05-21 20:25:24,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:24,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907168301] [2021-05-21 20:25:24,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:24,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:24,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907168301] [2021-05-21 20:25:24,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907168301] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:24,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:24,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:24,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714150883] [2021-05-21 20:25:24,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:24,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:24,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:24,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:24,906 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) [2021-05-21 20:25:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:25,184 INFO L93 Difference]: Finished difference Result 31394 states and 157967 transitions. [2021-05-21 20:25:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:25,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:25,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:25,455 INFO L225 Difference]: With dead ends: 31394 [2021-05-21 20:25:25,455 INFO L226 Difference]: Without dead ends: 30547 [2021-05-21 20:25:25,456 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30547 states. [2021-05-21 20:25:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30547 to 13283. [2021-05-21 20:25:26,469 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) [2021-05-21 20:25:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 70760 transitions. [2021-05-21 20:25:26,512 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 70760 transitions. Word has length 33 [2021-05-21 20:25:26,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:26,512 INFO L482 AbstractCegarLoop]: Abstraction has 13283 states and 70760 transitions. [2021-05-21 20:25:26,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 70760 transitions. [2021-05-21 20:25:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:26,539 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:26,539 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:26,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-21 20:25:26,539 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:26,539 INFO L82 PathProgramCache]: Analyzing trace with hash 44178907, now seen corresponding path program 11 times [2021-05-21 20:25:26,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:26,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968228136] [2021-05-21 20:25:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:26,723 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2021-05-21 20:25:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:26,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:26,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968228136] [2021-05-21 20:25:26,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968228136] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:26,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:26,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:26,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133932992] [2021-05-21 20:25:26,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:26,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:26,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:26,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:26,837 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) [2021-05-21 20:25:27,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:27,123 INFO L93 Difference]: Finished difference Result 31402 states and 158059 transitions. [2021-05-21 20:25:27,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:27,123 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:27,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:27,220 INFO L225 Difference]: With dead ends: 31402 [2021-05-21 20:25:27,220 INFO L226 Difference]: Without dead ends: 30651 [2021-05-21 20:25:27,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 193.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30651 states. [2021-05-21 20:25:28,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30651 to 13395. [2021-05-21 20:25:28,349 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) [2021-05-21 20:25:28,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71224 transitions. [2021-05-21 20:25:28,392 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71224 transitions. Word has length 33 [2021-05-21 20:25:28,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:28,392 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71224 transitions. [2021-05-21 20:25:28,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71224 transitions. [2021-05-21 20:25:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:28,421 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:28,421 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] [2021-05-21 20:25:28,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-21 20:25:28,421 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:28,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:28,421 INFO L82 PathProgramCache]: Analyzing trace with hash -436723139, now seen corresponding path program 12 times [2021-05-21 20:25:28,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:28,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437460067] [2021-05-21 20:25:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:28,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:28,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437460067] [2021-05-21 20:25:28,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437460067] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:28,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:28,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:28,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752513828] [2021-05-21 20:25:28,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:28,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:28,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:28,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:28,600 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) [2021-05-21 20:25:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:28,864 INFO L93 Difference]: Finished difference Result 31386 states and 157883 transitions. [2021-05-21 20:25:28,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:28,864 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:28,963 INFO L225 Difference]: With dead ends: 31386 [2021-05-21 20:25:28,963 INFO L226 Difference]: Without dead ends: 30483 [2021-05-21 20:25:28,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 175.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:29,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30483 states. [2021-05-21 20:25:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30483 to 13227. [2021-05-21 20:25:30,051 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) [2021-05-21 20:25:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 70528 transitions. [2021-05-21 20:25:30,093 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 70528 transitions. Word has length 33 [2021-05-21 20:25:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:30,093 INFO L482 AbstractCegarLoop]: Abstraction has 13227 states and 70528 transitions. [2021-05-21 20:25:30,093 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) [2021-05-21 20:25:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 70528 transitions. [2021-05-21 20:25:30,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:30,121 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:30,121 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] [2021-05-21 20:25:30,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-21 20:25:30,121 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:30,122 INFO L82 PathProgramCache]: Analyzing trace with hash -392502437, now seen corresponding path program 13 times [2021-05-21 20:25:30,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:30,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015970232] [2021-05-21 20:25:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:30,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:30,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015970232] [2021-05-21 20:25:30,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015970232] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:30,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:30,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:30,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099808591] [2021-05-21 20:25:30,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:30,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:30,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:30,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:30,313 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) [2021-05-21 20:25:30,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:30,553 INFO L93 Difference]: Finished difference Result 31725 states and 159654 transitions. [2021-05-21 20:25:30,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:30,553 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 [2021-05-21 20:25:30,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:30,651 INFO L225 Difference]: With dead ends: 31725 [2021-05-21 20:25:30,651 INFO L226 Difference]: Without dead ends: 30966 [2021-05-21 20:25:30,651 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 207.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30966 states. [2021-05-21 20:25:31,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30966 to 13427. [2021-05-21 20:25:31,786 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) [2021-05-21 20:25:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 71484 transitions. [2021-05-21 20:25:31,828 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 71484 transitions. Word has length 33 [2021-05-21 20:25:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:31,828 INFO L482 AbstractCegarLoop]: Abstraction has 13427 states and 71484 transitions. [2021-05-21 20:25:31,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 71484 transitions. [2021-05-21 20:25:31,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:31,855 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:31,855 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:31,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-21 20:25:31,855 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:31,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:31,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1188529317, now seen corresponding path program 14 times [2021-05-21 20:25:31,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:31,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561643036] [2021-05-21 20:25:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:32,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:32,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561643036] [2021-05-21 20:25:32,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561643036] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:32,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:32,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:32,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769645175] [2021-05-21 20:25:32,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:32,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:32,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:32,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:32,011 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) [2021-05-21 20:25:32,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:32,381 INFO L93 Difference]: Finished difference Result 31701 states and 159450 transitions. [2021-05-21 20:25:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:32,381 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:32,484 INFO L225 Difference]: With dead ends: 31701 [2021-05-21 20:25:32,484 INFO L226 Difference]: Without dead ends: 30854 [2021-05-21 20:25:32,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30854 states. [2021-05-21 20:25:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30854 to 13315. [2021-05-21 20:25:33,639 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) [2021-05-21 20:25:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70964 transitions. [2021-05-21 20:25:33,681 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70964 transitions. Word has length 33 [2021-05-21 20:25:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:33,681 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70964 transitions. [2021-05-21 20:25:33,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:33,681 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70964 transitions. [2021-05-21 20:25:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:33,708 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:33,708 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:33,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-21 20:25:33,709 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:33,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:33,709 INFO L82 PathProgramCache]: Analyzing trace with hash -818478403, now seen corresponding path program 15 times [2021-05-21 20:25:33,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:33,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097506870] [2021-05-21 20:25:33,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:33,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:33,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097506870] [2021-05-21 20:25:33,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097506870] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:33,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:33,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:33,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042033530] [2021-05-21 20:25:33,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:33,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:33,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:33,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:33,895 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) [2021-05-21 20:25:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:34,133 INFO L93 Difference]: Finished difference Result 31960 states and 160657 transitions. [2021-05-21 20:25:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:34,134 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 [2021-05-21 20:25:34,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:34,232 INFO L225 Difference]: With dead ends: 31960 [2021-05-21 20:25:34,233 INFO L226 Difference]: Without dead ends: 31201 [2021-05-21 20:25:34,233 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 203.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:35,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31201 states. [2021-05-21 20:25:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31201 to 13503. [2021-05-21 20:25:35,399 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) [2021-05-21 20:25:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71788 transitions. [2021-05-21 20:25:35,443 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71788 transitions. Word has length 33 [2021-05-21 20:25:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:35,443 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71788 transitions. [2021-05-21 20:25:35,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71788 transitions. [2021-05-21 20:25:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:35,472 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:35,472 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:35,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-21 20:25:35,472 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:35,472 INFO L82 PathProgramCache]: Analyzing trace with hash -388777125, now seen corresponding path program 16 times [2021-05-21 20:25:35,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:35,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576084145] [2021-05-21 20:25:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:35,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:35,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576084145] [2021-05-21 20:25:35,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576084145] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:35,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:35,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:35,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776554791] [2021-05-21 20:25:35,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:35,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:35,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:35,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:35,648 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) [2021-05-21 20:25:35,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:35,876 INFO L93 Difference]: Finished difference Result 32095 states and 161128 transitions. [2021-05-21 20:25:35,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:35,876 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 [2021-05-21 20:25:35,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:35,977 INFO L225 Difference]: With dead ends: 32095 [2021-05-21 20:25:35,977 INFO L226 Difference]: Without dead ends: 31013 [2021-05-21 20:25:35,977 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:36,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31013 states. [2021-05-21 20:25:37,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31013 to 13315. [2021-05-21 20:25:37,147 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) [2021-05-21 20:25:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70876 transitions. [2021-05-21 20:25:37,188 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70876 transitions. Word has length 33 [2021-05-21 20:25:37,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:37,188 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70876 transitions. [2021-05-21 20:25:37,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70876 transitions. [2021-05-21 20:25:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:37,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:37,221 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:37,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-21 20:25:37,221 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:37,221 INFO L82 PathProgramCache]: Analyzing trace with hash 244429659, now seen corresponding path program 17 times [2021-05-21 20:25:37,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:37,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900805074] [2021-05-21 20:25:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:37,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:37,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900805074] [2021-05-21 20:25:37,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900805074] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:37,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:37,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:37,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342678612] [2021-05-21 20:25:37,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:37,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:37,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:37,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:37,397 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) [2021-05-21 20:25:37,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:37,824 INFO L93 Difference]: Finished difference Result 31900 states and 160333 transitions. [2021-05-21 20:25:37,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:37,825 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:37,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:37,935 INFO L225 Difference]: With dead ends: 31900 [2021-05-21 20:25:37,935 INFO L226 Difference]: Without dead ends: 31165 [2021-05-21 20:25:37,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 187.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:38,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31165 states. [2021-05-21 20:25:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31165 to 13491. [2021-05-21 20:25:38,969 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) [2021-05-21 20:25:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71660 transitions. [2021-05-21 20:25:39,176 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71660 transitions. Word has length 33 [2021-05-21 20:25:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:39,176 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71660 transitions. [2021-05-21 20:25:39,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71660 transitions. [2021-05-21 20:25:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:39,204 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:39,204 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:39,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-21 20:25:39,204 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:39,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:39,204 INFO L82 PathProgramCache]: Analyzing trace with hash 319963965, now seen corresponding path program 18 times [2021-05-21 20:25:39,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:39,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381358730] [2021-05-21 20:25:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:39,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:39,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381358730] [2021-05-21 20:25:39,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381358730] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:39,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:39,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:39,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955079965] [2021-05-21 20:25:39,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:39,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:39,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:39,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:39,385 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) [2021-05-21 20:25:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:39,596 INFO L93 Difference]: Finished difference Result 32059 states and 160908 transitions. [2021-05-21 20:25:39,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:39,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:39,699 INFO L225 Difference]: With dead ends: 32059 [2021-05-21 20:25:39,699 INFO L226 Difference]: Without dead ends: 30901 [2021-05-21 20:25:39,699 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 [2021-05-21 20:25:40,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30901 states. [2021-05-21 20:25:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30901 to 13227. [2021-05-21 20:25:40,871 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) [2021-05-21 20:25:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 70484 transitions. [2021-05-21 20:25:40,912 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 70484 transitions. Word has length 33 [2021-05-21 20:25:40,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:40,912 INFO L482 AbstractCegarLoop]: Abstraction has 13227 states and 70484 transitions. [2021-05-21 20:25:40,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:40,912 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 70484 transitions. [2021-05-21 20:25:40,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:40,939 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:40,939 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:40,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-21 20:25:40,939 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:40,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:40,940 INFO L82 PathProgramCache]: Analyzing trace with hash 2072640441, now seen corresponding path program 19 times [2021-05-21 20:25:40,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:40,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275068034] [2021-05-21 20:25:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:41,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:41,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275068034] [2021-05-21 20:25:41,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275068034] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:41,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:41,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:41,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810728318] [2021-05-21 20:25:41,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:41,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:41,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:41,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:41,113 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) [2021-05-21 20:25:41,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:41,344 INFO L93 Difference]: Finished difference Result 31697 states and 159510 transitions. [2021-05-21 20:25:41,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:41,344 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 [2021-05-21 20:25:41,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:41,444 INFO L225 Difference]: With dead ends: 31697 [2021-05-21 20:25:41,444 INFO L226 Difference]: Without dead ends: 30946 [2021-05-21 20:25:41,445 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 185.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30946 states. [2021-05-21 20:25:42,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30946 to 13427. [2021-05-21 20:25:42,568 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) [2021-05-21 20:25:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 71440 transitions. [2021-05-21 20:25:42,612 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 71440 transitions. Word has length 33 [2021-05-21 20:25:42,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:42,612 INFO L482 AbstractCegarLoop]: Abstraction has 13427 states and 71440 transitions. [2021-05-21 20:25:42,612 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) [2021-05-21 20:25:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 71440 transitions. [2021-05-21 20:25:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:42,640 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:42,640 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:42,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-21 20:25:42,641 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:42,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1591738395, now seen corresponding path program 20 times [2021-05-21 20:25:42,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:42,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694572036] [2021-05-21 20:25:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:42,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:42,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694572036] [2021-05-21 20:25:42,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694572036] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:42,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:42,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:42,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61528227] [2021-05-21 20:25:42,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:42,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:42,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:42,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:42,793 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) [2021-05-21 20:25:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:43,350 INFO L93 Difference]: Finished difference Result 31681 states and 159334 transitions. [2021-05-21 20:25:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:43,350 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:43,465 INFO L225 Difference]: With dead ends: 31681 [2021-05-21 20:25:43,465 INFO L226 Difference]: Without dead ends: 30834 [2021-05-21 20:25:43,465 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:44,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30834 states. [2021-05-21 20:25:44,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30834 to 13315. [2021-05-21 20:25:44,526 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) [2021-05-21 20:25:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70920 transitions. [2021-05-21 20:25:44,570 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70920 transitions. Word has length 33 [2021-05-21 20:25:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:44,570 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70920 transitions. [2021-05-21 20:25:44,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70920 transitions. [2021-05-21 20:25:44,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:44,597 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:44,597 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:44,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-21 20:25:44,598 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:44,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:44,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1646664475, now seen corresponding path program 21 times [2021-05-21 20:25:44,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:44,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559741754] [2021-05-21 20:25:44,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:45,034 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-05-21 20:25:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:45,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:45,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559741754] [2021-05-21 20:25:45,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559741754] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:45,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:45,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:45,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190772549] [2021-05-21 20:25:45,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:45,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:45,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:45,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:45,108 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) [2021-05-21 20:25:45,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:45,407 INFO L93 Difference]: Finished difference Result 31928 states and 160497 transitions. [2021-05-21 20:25:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:45,407 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 [2021-05-21 20:25:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:45,511 INFO L225 Difference]: With dead ends: 31928 [2021-05-21 20:25:45,511 INFO L226 Difference]: Without dead ends: 31177 [2021-05-21 20:25:45,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 551.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:46,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31177 states. [2021-05-21 20:25:46,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31177 to 13499. [2021-05-21 20:25:46,704 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) [2021-05-21 20:25:46,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13499 states to 13499 states and 71732 transitions. [2021-05-21 20:25:46,747 INFO L78 Accepts]: Start accepts. Automaton has 13499 states and 71732 transitions. Word has length 33 [2021-05-21 20:25:46,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:46,747 INFO L482 AbstractCegarLoop]: Abstraction has 13499 states and 71732 transitions. [2021-05-21 20:25:46,747 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) [2021-05-21 20:25:46,747 INFO L276 IsEmpty]: Start isEmpty. Operand 13499 states and 71732 transitions. [2021-05-21 20:25:46,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:46,775 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:46,775 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:46,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-21 20:25:46,775 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:46,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:46,776 INFO L82 PathProgramCache]: Analyzing trace with hash -929238245, now seen corresponding path program 22 times [2021-05-21 20:25:46,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:46,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146168089] [2021-05-21 20:25:46,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:46,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:46,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146168089] [2021-05-21 20:25:46,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146168089] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:46,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:46,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:46,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931465910] [2021-05-21 20:25:46,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:46,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:46,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:46,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:46,948 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) [2021-05-21 20:25:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:47,175 INFO L93 Difference]: Finished difference Result 32071 states and 161000 transitions. [2021-05-21 20:25:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:47,175 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 [2021-05-21 20:25:47,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:47,275 INFO L225 Difference]: With dead ends: 32071 [2021-05-21 20:25:47,275 INFO L226 Difference]: Without dead ends: 30993 [2021-05-21 20:25:47,275 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30993 states. [2021-05-21 20:25:48,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30993 to 13315. [2021-05-21 20:25:48,412 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) [2021-05-21 20:25:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70832 transitions. [2021-05-21 20:25:48,455 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70832 transitions. Word has length 33 [2021-05-21 20:25:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:48,455 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70832 transitions. [2021-05-21 20:25:48,455 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) [2021-05-21 20:25:48,455 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70832 transitions. [2021-05-21 20:25:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:48,482 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:48,482 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] [2021-05-21 20:25:48,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-21 20:25:48,482 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:48,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:48,483 INFO L82 PathProgramCache]: Analyzing trace with hash 857278205, now seen corresponding path program 23 times [2021-05-21 20:25:48,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:48,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137593067] [2021-05-21 20:25:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:48,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:48,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137593067] [2021-05-21 20:25:48,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137593067] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:48,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:48,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:48,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665318391] [2021-05-21 20:25:48,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:48,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:48,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:48,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:48,678 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) [2021-05-21 20:25:48,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:48,909 INFO L93 Difference]: Finished difference Result 31888 states and 160245 transitions. [2021-05-21 20:25:48,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:48,910 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:48,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:49,009 INFO L225 Difference]: With dead ends: 31888 [2021-05-21 20:25:49,010 INFO L226 Difference]: Without dead ends: 31153 [2021-05-21 20:25:49,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 193.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31153 states. [2021-05-21 20:25:50,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31153 to 13491. [2021-05-21 20:25:50,219 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) [2021-05-21 20:25:50,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71616 transitions. [2021-05-21 20:25:50,261 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71616 transitions. Word has length 33 [2021-05-21 20:25:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:50,261 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71616 transitions. [2021-05-21 20:25:50,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71616 transitions. [2021-05-21 20:25:50,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:50,288 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:50,288 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:50,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-21 20:25:50,288 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:50,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:50,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1096125605, now seen corresponding path program 24 times [2021-05-21 20:25:50,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:50,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309883114] [2021-05-21 20:25:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:50,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:50,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309883114] [2021-05-21 20:25:50,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309883114] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:50,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:50,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:50,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335672519] [2021-05-21 20:25:50,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:50,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:50,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:50,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:50,483 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) [2021-05-21 20:25:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:50,907 INFO L93 Difference]: Finished difference Result 32047 states and 160820 transitions. [2021-05-21 20:25:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:50,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:51,007 INFO L225 Difference]: With dead ends: 32047 [2021-05-21 20:25:51,007 INFO L226 Difference]: Without dead ends: 30845 [2021-05-21 20:25:51,007 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 [2021-05-21 20:25:51,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30845 states. [2021-05-21 20:25:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30845 to 13183. [2021-05-21 20:25:52,024 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) [2021-05-21 20:25:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 70310 transitions. [2021-05-21 20:25:52,243 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 70310 transitions. Word has length 33 [2021-05-21 20:25:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:52,244 INFO L482 AbstractCegarLoop]: Abstraction has 13183 states and 70310 transitions. [2021-05-21 20:25:52,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 70310 transitions. [2021-05-21 20:25:52,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:52,273 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:52,273 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:52,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-21 20:25:52,274 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:52,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:52,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1900453661, now seen corresponding path program 25 times [2021-05-21 20:25:52,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:52,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036074390] [2021-05-21 20:25:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:52,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:52,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036074390] [2021-05-21 20:25:52,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036074390] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:52,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:52,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:52,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852809526] [2021-05-21 20:25:52,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:52,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:52,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:52,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:52,423 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) [2021-05-21 20:25:52,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:52,672 INFO L93 Difference]: Finished difference Result 32010 states and 160923 transitions. [2021-05-21 20:25:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:52,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:52,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:52,771 INFO L225 Difference]: With dead ends: 32010 [2021-05-21 20:25:52,771 INFO L226 Difference]: Without dead ends: 31251 [2021-05-21 20:25:52,772 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31251 states. [2021-05-21 20:25:53,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31251 to 13457. [2021-05-21 20:25:53,933 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) [2021-05-21 20:25:53,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13457 states to 13457 states and 71673 transitions. [2021-05-21 20:25:53,976 INFO L78 Accepts]: Start accepts. Automaton has 13457 states and 71673 transitions. Word has length 33 [2021-05-21 20:25:53,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:53,977 INFO L482 AbstractCegarLoop]: Abstraction has 13457 states and 71673 transitions. [2021-05-21 20:25:53,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:53,977 INFO L276 IsEmpty]: Start isEmpty. Operand 13457 states and 71673 transitions. [2021-05-21 20:25:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:54,005 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:54,005 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:54,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-21 20:25:54,005 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:54,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:54,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1053656699, now seen corresponding path program 26 times [2021-05-21 20:25:54,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:54,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068045651] [2021-05-21 20:25:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:54,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:54,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068045651] [2021-05-21 20:25:54,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068045651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:54,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:54,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:54,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122084550] [2021-05-21 20:25:54,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:54,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:54,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:54,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:54,151 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) [2021-05-21 20:25:54,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:54,375 INFO L93 Difference]: Finished difference Result 32002 states and 160775 transitions. [2021-05-21 20:25:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:54,376 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:54,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:54,474 INFO L225 Difference]: With dead ends: 32002 [2021-05-21 20:25:54,474 INFO L226 Difference]: Without dead ends: 31131 [2021-05-21 20:25:54,475 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 [2021-05-21 20:25:55,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31131 states. [2021-05-21 20:25:55,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31131 to 13337. [2021-05-21 20:25:55,609 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) [2021-05-21 20:25:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13337 states to 13337 states and 71121 transitions. [2021-05-21 20:25:55,650 INFO L78 Accepts]: Start accepts. Automaton has 13337 states and 71121 transitions. Word has length 33 [2021-05-21 20:25:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:55,650 INFO L482 AbstractCegarLoop]: Abstraction has 13337 states and 71121 transitions. [2021-05-21 20:25:55,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 13337 states and 71121 transitions. [2021-05-21 20:25:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:55,677 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:55,677 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:55,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-21 20:25:55,678 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:55,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:55,678 INFO L82 PathProgramCache]: Analyzing trace with hash -643119331, now seen corresponding path program 27 times [2021-05-21 20:25:55,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:55,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238165213] [2021-05-21 20:25:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:55,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:55,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238165213] [2021-05-21 20:25:55,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238165213] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:55,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:55,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:55,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751603896] [2021-05-21 20:25:55,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:55,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:55,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:55,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:55,845 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) [2021-05-21 20:25:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:56,082 INFO L93 Difference]: Finished difference Result 32221 states and 161822 transitions. [2021-05-21 20:25:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:56,083 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 [2021-05-21 20:25:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:56,181 INFO L225 Difference]: With dead ends: 32221 [2021-05-21 20:25:56,181 INFO L226 Difference]: Without dead ends: 31462 [2021-05-21 20:25:56,181 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 182.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:57,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31462 states. [2021-05-21 20:25:57,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31462 to 13525. [2021-05-21 20:25:57,330 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) [2021-05-21 20:25:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13525 states to 13525 states and 71945 transitions. [2021-05-21 20:25:57,374 INFO L78 Accepts]: Start accepts. Automaton has 13525 states and 71945 transitions. Word has length 33 [2021-05-21 20:25:57,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:57,374 INFO L482 AbstractCegarLoop]: Abstraction has 13525 states and 71945 transitions. [2021-05-21 20:25:57,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:57,374 INFO L276 IsEmpty]: Start isEmpty. Operand 13525 states and 71945 transitions. [2021-05-21 20:25:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:57,402 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:57,402 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] [2021-05-21 20:25:57,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-21 20:25:57,402 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:57,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:57,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1744961309, now seen corresponding path program 28 times [2021-05-21 20:25:57,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:57,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261146821] [2021-05-21 20:25:57,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:57,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:57,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261146821] [2021-05-21 20:25:57,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261146821] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:57,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:57,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:57,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720029735] [2021-05-21 20:25:57,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:57,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:57,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:57,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:57,588 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) [2021-05-21 20:25:57,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:57,939 INFO L93 Difference]: Finished difference Result 32356 states and 162293 transitions. [2021-05-21 20:25:57,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:57,939 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:57,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:58,040 INFO L225 Difference]: With dead ends: 32356 [2021-05-21 20:25:58,040 INFO L226 Difference]: Without dead ends: 31274 [2021-05-21 20:25:58,040 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 181.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:25:58,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31274 states. [2021-05-21 20:25:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31274 to 13337. [2021-05-21 20:25:59,063 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) [2021-05-21 20:25:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13337 states to 13337 states and 71029 transitions. [2021-05-21 20:25:59,279 INFO L78 Accepts]: Start accepts. Automaton has 13337 states and 71029 transitions. Word has length 33 [2021-05-21 20:25:59,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:25:59,279 INFO L482 AbstractCegarLoop]: Abstraction has 13337 states and 71029 transitions. [2021-05-21 20:25:59,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:25:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 13337 states and 71029 transitions. [2021-05-21 20:25:59,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:25:59,307 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:25:59,308 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:25:59,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-21 20:25:59,308 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:25:59,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:25:59,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1499867397, now seen corresponding path program 29 times [2021-05-21 20:25:59,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:25:59,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365135189] [2021-05-21 20:25:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:25:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:25:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:25:59,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:25:59,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365135189] [2021-05-21 20:25:59,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365135189] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:25:59,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:25:59,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:25:59,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029973860] [2021-05-21 20:25:59,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:25:59,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:25:59,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:25:59,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:25:59,484 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) [2021-05-21 20:25:59,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:25:59,748 INFO L93 Difference]: Finished difference Result 32201 states and 161658 transitions. [2021-05-21 20:25:59,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:25:59,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:25:59,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:25:59,846 INFO L225 Difference]: With dead ends: 32201 [2021-05-21 20:25:59,846 INFO L226 Difference]: Without dead ends: 31450 [2021-05-21 20:25:59,847 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 [2021-05-21 20:26:00,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31450 states. [2021-05-21 20:26:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31450 to 13521. [2021-05-21 20:26:01,016 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) [2021-05-21 20:26:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 71841 transitions. [2021-05-21 20:26:01,059 INFO L78 Accepts]: Start accepts. Automaton has 13521 states and 71841 transitions. Word has length 33 [2021-05-21 20:26:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:01,059 INFO L482 AbstractCegarLoop]: Abstraction has 13521 states and 71841 transitions. [2021-05-21 20:26:01,059 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) [2021-05-21 20:26:01,059 INFO L276 IsEmpty]: Start isEmpty. Operand 13521 states and 71841 transitions. [2021-05-21 20:26:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:01,086 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:01,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:01,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-21 20:26:01,086 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:01,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:01,087 INFO L82 PathProgramCache]: Analyzing trace with hash -2117390755, now seen corresponding path program 30 times [2021-05-21 20:26:01,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:01,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024478503] [2021-05-21 20:26:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:01,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:01,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024478503] [2021-05-21 20:26:01,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024478503] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:01,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:01,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:01,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361373026] [2021-05-21 20:26:01,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:01,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:01,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:01,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:01,269 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) [2021-05-21 20:26:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:01,506 INFO L93 Difference]: Finished difference Result 32344 states and 162161 transitions. [2021-05-21 20:26:01,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:01,506 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 [2021-05-21 20:26:01,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:01,604 INFO L225 Difference]: With dead ends: 32344 [2021-05-21 20:26:01,604 INFO L226 Difference]: Without dead ends: 31174 [2021-05-21 20:26:01,604 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 [2021-05-21 20:26:02,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31174 states. [2021-05-21 20:26:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31174 to 13245. [2021-05-21 20:26:02,708 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) [2021-05-21 20:26:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13245 states to 13245 states and 70623 transitions. [2021-05-21 20:26:02,750 INFO L78 Accepts]: Start accepts. Automaton has 13245 states and 70623 transitions. Word has length 33 [2021-05-21 20:26:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:02,750 INFO L482 AbstractCegarLoop]: Abstraction has 13245 states and 70623 transitions. [2021-05-21 20:26:02,750 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) [2021-05-21 20:26:02,750 INFO L276 IsEmpty]: Start isEmpty. Operand 13245 states and 70623 transitions. [2021-05-21 20:26:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:02,776 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:02,776 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:02,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-21 20:26:02,777 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:02,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:02,777 INFO L82 PathProgramCache]: Analyzing trace with hash -474558307, now seen corresponding path program 31 times [2021-05-21 20:26:02,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:02,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143505626] [2021-05-21 20:26:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:02,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:02,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143505626] [2021-05-21 20:26:02,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143505626] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:02,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:02,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:02,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029533580] [2021-05-21 20:26:02,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:02,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:02,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:02,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:02,911 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) [2021-05-21 20:26:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:03,140 INFO L93 Difference]: Finished difference Result 31721 states and 159483 transitions. [2021-05-21 20:26:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:03,140 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 [2021-05-21 20:26:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:03,240 INFO L225 Difference]: With dead ends: 31721 [2021-05-21 20:26:03,240 INFO L226 Difference]: Without dead ends: 30962 [2021-05-21 20:26:03,240 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 157.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30962 states. [2021-05-21 20:26:04,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30962 to 13425. [2021-05-21 20:26:04,395 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) [2021-05-21 20:26:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13425 states to 13425 states and 71451 transitions. [2021-05-21 20:26:04,438 INFO L78 Accepts]: Start accepts. Automaton has 13425 states and 71451 transitions. Word has length 33 [2021-05-21 20:26:04,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:04,438 INFO L482 AbstractCegarLoop]: Abstraction has 13425 states and 71451 transitions. [2021-05-21 20:26:04,438 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) [2021-05-21 20:26:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 13425 states and 71451 transitions. [2021-05-21 20:26:04,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:04,466 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:04,467 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] [2021-05-21 20:26:04,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-21 20:26:04,467 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:04,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:04,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1321355269, now seen corresponding path program 32 times [2021-05-21 20:26:04,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:04,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775867496] [2021-05-21 20:26:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:04,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:04,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775867496] [2021-05-21 20:26:04,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775867496] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:04,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:04,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:04,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791385472] [2021-05-21 20:26:04,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:04,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:04,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:04,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:04,601 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) [2021-05-21 20:26:04,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:04,959 INFO L93 Difference]: Finished difference Result 31713 states and 159335 transitions. [2021-05-21 20:26:04,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:04,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:05,059 INFO L225 Difference]: With dead ends: 31713 [2021-05-21 20:26:05,059 INFO L226 Difference]: Without dead ends: 30842 [2021-05-21 20:26:05,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:05,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30842 states. [2021-05-21 20:26:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30842 to 13305. [2021-05-21 20:26:06,097 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) [2021-05-21 20:26:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13305 states to 13305 states and 70899 transitions. [2021-05-21 20:26:06,141 INFO L78 Accepts]: Start accepts. Automaton has 13305 states and 70899 transitions. Word has length 33 [2021-05-21 20:26:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:06,141 INFO L482 AbstractCegarLoop]: Abstraction has 13305 states and 70899 transitions. [2021-05-21 20:26:06,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 13305 states and 70899 transitions. [2021-05-21 20:26:06,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:06,277 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:06,277 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:06,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-21 20:26:06,277 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:06,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:06,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1929909563, now seen corresponding path program 33 times [2021-05-21 20:26:06,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:06,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360354238] [2021-05-21 20:26:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:06,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:06,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360354238] [2021-05-21 20:26:06,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360354238] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:06,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:06,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:06,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16283151] [2021-05-21 20:26:06,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:06,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:06,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:06,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:06,411 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) [2021-05-21 20:26:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:06,644 INFO L93 Difference]: Finished difference Result 31739 states and 159484 transitions. [2021-05-21 20:26:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:06,645 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 [2021-05-21 20:26:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:06,748 INFO L225 Difference]: With dead ends: 31739 [2021-05-21 20:26:06,748 INFO L226 Difference]: Without dead ends: 30980 [2021-05-21 20:26:06,749 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 143.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:07,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30980 states. [2021-05-21 20:26:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30980 to 13429. [2021-05-21 20:26:07,898 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) [2021-05-21 20:26:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13429 states to 13429 states and 71403 transitions. [2021-05-21 20:26:07,942 INFO L78 Accepts]: Start accepts. Automaton has 13429 states and 71403 transitions. Word has length 33 [2021-05-21 20:26:07,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:07,942 INFO L482 AbstractCegarLoop]: Abstraction has 13429 states and 71403 transitions. [2021-05-21 20:26:07,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 13429 states and 71403 transitions. [2021-05-21 20:26:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:07,971 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:07,971 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:07,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-21 20:26:07,971 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:07,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:07,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1939317445, now seen corresponding path program 34 times [2021-05-21 20:26:07,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:07,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066329864] [2021-05-21 20:26:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:08,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:08,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066329864] [2021-05-21 20:26:08,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066329864] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:08,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:08,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:08,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60329856] [2021-05-21 20:26:08,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:08,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:08,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:08,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:08,104 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) [2021-05-21 20:26:08,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:08,334 INFO L93 Difference]: Finished difference Result 31745 states and 159377 transitions. [2021-05-21 20:26:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:08,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:08,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:08,432 INFO L225 Difference]: With dead ends: 31745 [2021-05-21 20:26:08,432 INFO L226 Difference]: Without dead ends: 30856 [2021-05-21 20:26:08,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 147.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30856 states. [2021-05-21 20:26:09,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30856 to 13305. [2021-05-21 20:26:09,541 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) [2021-05-21 20:26:09,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13305 states to 13305 states and 70839 transitions. [2021-05-21 20:26:09,583 INFO L78 Accepts]: Start accepts. Automaton has 13305 states and 70839 transitions. Word has length 33 [2021-05-21 20:26:09,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:09,584 INFO L482 AbstractCegarLoop]: Abstraction has 13305 states and 70839 transitions. [2021-05-21 20:26:09,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:09,584 INFO L276 IsEmpty]: Start isEmpty. Operand 13305 states and 70839 transitions. [2021-05-21 20:26:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:09,612 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:09,612 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:09,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-21 20:26:09,612 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:09,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:09,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1073161497, now seen corresponding path program 35 times [2021-05-21 20:26:09,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:09,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446886385] [2021-05-21 20:26:09,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:09,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:09,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446886385] [2021-05-21 20:26:09,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446886385] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:09,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:09,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:09,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430919366] [2021-05-21 20:26:09,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:09,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:09,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:09,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:09,753 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) [2021-05-21 20:26:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:09,984 INFO L93 Difference]: Finished difference Result 31719 states and 159352 transitions. [2021-05-21 20:26:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:09,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:09,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:10,082 INFO L225 Difference]: With dead ends: 31719 [2021-05-21 20:26:10,083 INFO L226 Difference]: Without dead ends: 30968 [2021-05-21 20:26:10,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30968 states. [2021-05-21 20:26:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30968 to 13425. [2021-05-21 20:26:11,209 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) [2021-05-21 20:26:11,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13425 states to 13425 states and 71331 transitions. [2021-05-21 20:26:11,252 INFO L78 Accepts]: Start accepts. Automaton has 13425 states and 71331 transitions. Word has length 33 [2021-05-21 20:26:11,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:11,252 INFO L482 AbstractCegarLoop]: Abstraction has 13425 states and 71331 transitions. [2021-05-21 20:26:11,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:11,252 INFO L276 IsEmpty]: Start isEmpty. Operand 13425 states and 71331 transitions. [2021-05-21 20:26:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:11,279 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:11,279 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] [2021-05-21 20:26:11,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-21 20:26:11,280 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:11,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:11,280 INFO L82 PathProgramCache]: Analyzing trace with hash -237419525, now seen corresponding path program 36 times [2021-05-21 20:26:11,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:11,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052956721] [2021-05-21 20:26:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:11,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:11,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052956721] [2021-05-21 20:26:11,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052956721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:11,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:11,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:11,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630207263] [2021-05-21 20:26:11,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:11,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:11,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:11,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:11,432 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) [2021-05-21 20:26:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:11,664 INFO L93 Difference]: Finished difference Result 31733 states and 159277 transitions. [2021-05-21 20:26:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:11,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:11,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:12,029 INFO L225 Difference]: With dead ends: 31733 [2021-05-21 20:26:12,029 INFO L226 Difference]: Without dead ends: 30788 [2021-05-21 20:26:12,029 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 [2021-05-21 20:26:12,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30788 states. [2021-05-21 20:26:13,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30788 to 13245. [2021-05-21 20:26:13,034 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) [2021-05-21 20:26:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13245 states to 13245 states and 70593 transitions. [2021-05-21 20:26:13,075 INFO L78 Accepts]: Start accepts. Automaton has 13245 states and 70593 transitions. Word has length 33 [2021-05-21 20:26:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:13,075 INFO L482 AbstractCegarLoop]: Abstraction has 13245 states and 70593 transitions. [2021-05-21 20:26:13,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 13245 states and 70593 transitions. [2021-05-21 20:26:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:13,102 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:13,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:13,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-21 20:26:13,102 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:13,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:13,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1711091003, now seen corresponding path program 37 times [2021-05-21 20:26:13,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:13,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776791990] [2021-05-21 20:26:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:13,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:13,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776791990] [2021-05-21 20:26:13,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776791990] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:13,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:13,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:13,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600551772] [2021-05-21 20:26:13,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:13,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:13,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:13,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:13,263 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) [2021-05-21 20:26:13,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:13,669 INFO L93 Difference]: Finished difference Result 32344 states and 162302 transitions. [2021-05-21 20:26:13,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:13,669 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 [2021-05-21 20:26:13,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:13,769 INFO L225 Difference]: With dead ends: 32344 [2021-05-21 20:26:13,769 INFO L226 Difference]: Without dead ends: 31585 [2021-05-21 20:26:13,769 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 183.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31585 states. [2021-05-21 20:26:14,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31585 to 13559. [2021-05-21 20:26:14,946 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) [2021-05-21 20:26:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13559 states to 13559 states and 72082 transitions. [2021-05-21 20:26:14,990 INFO L78 Accepts]: Start accepts. Automaton has 13559 states and 72082 transitions. Word has length 33 [2021-05-21 20:26:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:14,990 INFO L482 AbstractCegarLoop]: Abstraction has 13559 states and 72082 transitions. [2021-05-21 20:26:14,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 13559 states and 72082 transitions. [2021-05-21 20:26:15,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:15,018 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:15,018 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:15,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-21 20:26:15,018 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:15,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:15,018 INFO L82 PathProgramCache]: Analyzing trace with hash -195795653, now seen corresponding path program 38 times [2021-05-21 20:26:15,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:15,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063007906] [2021-05-21 20:26:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:15,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:15,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063007906] [2021-05-21 20:26:15,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063007906] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:15,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:15,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:15,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446972514] [2021-05-21 20:26:15,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:15,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:15,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:15,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:15,181 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) [2021-05-21 20:26:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:15,429 INFO L93 Difference]: Finished difference Result 32479 states and 162773 transitions. [2021-05-21 20:26:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:15,534 INFO L225 Difference]: With dead ends: 32479 [2021-05-21 20:26:15,534 INFO L226 Difference]: Without dead ends: 31397 [2021-05-21 20:26:15,535 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 [2021-05-21 20:26:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31397 states. [2021-05-21 20:26:16,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31397 to 13371. [2021-05-21 20:26:16,714 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) [2021-05-21 20:26:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71164 transitions. [2021-05-21 20:26:16,756 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71164 transitions. Word has length 33 [2021-05-21 20:26:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:16,757 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71164 transitions. [2021-05-21 20:26:16,757 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) [2021-05-21 20:26:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71164 transitions. [2021-05-21 20:26:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:16,784 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:16,784 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] [2021-05-21 20:26:16,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-21 20:26:16,784 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:16,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:16,784 INFO L82 PathProgramCache]: Analyzing trace with hash -874274531, now seen corresponding path program 39 times [2021-05-21 20:26:16,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:16,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180541133] [2021-05-21 20:26:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:16,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:16,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180541133] [2021-05-21 20:26:16,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180541133] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:16,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:16,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:16,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317499226] [2021-05-21 20:26:16,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:16,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:16,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:16,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:16,912 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) [2021-05-21 20:26:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:17,171 INFO L93 Difference]: Finished difference Result 32151 states and 161310 transitions. [2021-05-21 20:26:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:17,171 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 [2021-05-21 20:26:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:17,272 INFO L225 Difference]: With dead ends: 32151 [2021-05-21 20:26:17,272 INFO L226 Difference]: Without dead ends: 31392 [2021-05-21 20:26:17,272 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31392 states. [2021-05-21 20:26:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31392 to 13495. [2021-05-21 20:26:18,400 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) [2021-05-21 20:26:18,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 71668 transitions. [2021-05-21 20:26:18,444 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 71668 transitions. Word has length 33 [2021-05-21 20:26:18,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:18,444 INFO L482 AbstractCegarLoop]: Abstraction has 13495 states and 71668 transitions. [2021-05-21 20:26:18,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:18,444 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 71668 transitions. [2021-05-21 20:26:18,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:18,472 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:18,472 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:18,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-21 20:26:18,472 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:18,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:18,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1818395963, now seen corresponding path program 40 times [2021-05-21 20:26:18,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:18,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707756180] [2021-05-21 20:26:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:18,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:18,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707756180] [2021-05-21 20:26:18,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707756180] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:18,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:18,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:18,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849859521] [2021-05-21 20:26:18,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:18,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:18,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:18,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:18,602 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) [2021-05-21 20:26:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:18,844 INFO L93 Difference]: Finished difference Result 32157 states and 161203 transitions. [2021-05-21 20:26:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:18,844 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:18,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:18,946 INFO L225 Difference]: With dead ends: 32157 [2021-05-21 20:26:18,946 INFO L226 Difference]: Without dead ends: 31268 [2021-05-21 20:26:18,946 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:19,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31268 states. [2021-05-21 20:26:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31268 to 13371. [2021-05-21 20:26:20,104 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) [2021-05-21 20:26:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71102 transitions. [2021-05-21 20:26:20,146 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71102 transitions. Word has length 33 [2021-05-21 20:26:20,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:20,146 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71102 transitions. [2021-05-21 20:26:20,146 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) [2021-05-21 20:26:20,146 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71102 transitions. [2021-05-21 20:26:20,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:20,173 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:20,173 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] [2021-05-21 20:26:20,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-21 20:26:20,173 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:20,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:20,173 INFO L82 PathProgramCache]: Analyzing trace with hash 918727995, now seen corresponding path program 41 times [2021-05-21 20:26:20,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:20,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106359459] [2021-05-21 20:26:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:20,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:20,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106359459] [2021-05-21 20:26:20,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106359459] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:20,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:20,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:20,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400126580] [2021-05-21 20:26:20,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:20,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:20,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:20,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:20,315 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) [2021-05-21 20:26:20,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:20,710 INFO L93 Difference]: Finished difference Result 32552 states and 163024 transitions. [2021-05-21 20:26:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:20,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:20,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:20,813 INFO L225 Difference]: With dead ends: 32552 [2021-05-21 20:26:20,813 INFO L226 Difference]: Without dead ends: 31658 [2021-05-21 20:26:20,813 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 140.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31658 states. [2021-05-21 20:26:21,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31658 to 13626. [2021-05-21 20:26:21,861 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) [2021-05-21 20:26:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13626 states to 13626 states and 72125 transitions. [2021-05-21 20:26:22,082 INFO L78 Accepts]: Start accepts. Automaton has 13626 states and 72125 transitions. Word has length 33 [2021-05-21 20:26:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:22,082 INFO L482 AbstractCegarLoop]: Abstraction has 13626 states and 72125 transitions. [2021-05-21 20:26:22,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:22,082 INFO L276 IsEmpty]: Start isEmpty. Operand 13626 states and 72125 transitions. [2021-05-21 20:26:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:22,112 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:22,112 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:22,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-21 20:26:22,113 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:22,113 INFO L82 PathProgramCache]: Analyzing trace with hash 437825949, now seen corresponding path program 42 times [2021-05-21 20:26:22,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:22,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073482700] [2021-05-21 20:26:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:22,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:22,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073482700] [2021-05-21 20:26:22,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073482700] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:22,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:22,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:22,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956395918] [2021-05-21 20:26:22,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:22,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:22,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:22,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:22,245 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) [2021-05-21 20:26:22,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:22,487 INFO L93 Difference]: Finished difference Result 32423 states and 162255 transitions. [2021-05-21 20:26:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:22,487 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:22,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:22,587 INFO L225 Difference]: With dead ends: 32423 [2021-05-21 20:26:22,587 INFO L226 Difference]: Without dead ends: 31277 [2021-05-21 20:26:22,587 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 [2021-05-21 20:26:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31277 states. [2021-05-21 20:26:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31277 to 13245. [2021-05-21 20:26:23,778 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) [2021-05-21 20:26:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13245 states to 13245 states and 70531 transitions. [2021-05-21 20:26:23,820 INFO L78 Accepts]: Start accepts. Automaton has 13245 states and 70531 transitions. Word has length 33 [2021-05-21 20:26:23,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:23,820 INFO L482 AbstractCegarLoop]: Abstraction has 13245 states and 70531 transitions. [2021-05-21 20:26:23,820 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) [2021-05-21 20:26:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 13245 states and 70531 transitions. [2021-05-21 20:26:23,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:23,848 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:23,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:23,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-21 20:26:23,848 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:23,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:23,849 INFO L82 PathProgramCache]: Analyzing trace with hash -118733415, now seen corresponding path program 43 times [2021-05-21 20:26:23,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:23,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290100013] [2021-05-21 20:26:23,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:24,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:24,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290100013] [2021-05-21 20:26:24,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290100013] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:24,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:24,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:24,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495610906] [2021-05-21 20:26:24,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:24,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:24,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:24,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:24,012 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) [2021-05-21 20:26:24,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:24,252 INFO L93 Difference]: Finished difference Result 32306 states and 162099 transitions. [2021-05-21 20:26:24,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:24,253 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 [2021-05-21 20:26:24,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:24,354 INFO L225 Difference]: With dead ends: 32306 [2021-05-21 20:26:24,354 INFO L226 Difference]: Without dead ends: 31555 [2021-05-21 20:26:24,354 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 [2021-05-21 20:26:25,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31555 states. [2021-05-21 20:26:25,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31555 to 13553. [2021-05-21 20:26:25,525 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) [2021-05-21 20:26:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13553 states to 13553 states and 71999 transitions. [2021-05-21 20:26:25,569 INFO L78 Accepts]: Start accepts. Automaton has 13553 states and 71999 transitions. Word has length 33 [2021-05-21 20:26:25,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:25,569 INFO L482 AbstractCegarLoop]: Abstraction has 13553 states and 71999 transitions. [2021-05-21 20:26:25,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:25,569 INFO L276 IsEmpty]: Start isEmpty. Operand 13553 states and 71999 transitions. [2021-05-21 20:26:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:25,597 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:25,597 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:25,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-21 20:26:25,598 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:25,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:25,598 INFO L82 PathProgramCache]: Analyzing trace with hash -736256773, now seen corresponding path program 44 times [2021-05-21 20:26:25,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:25,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380517572] [2021-05-21 20:26:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:25,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:25,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380517572] [2021-05-21 20:26:25,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380517572] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:25,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:25,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:25,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057354042] [2021-05-21 20:26:25,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:25,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:25,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:25,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:25,767 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) [2021-05-21 20:26:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:25,992 INFO L93 Difference]: Finished difference Result 32449 states and 162602 transitions. [2021-05-21 20:26:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:25,992 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 [2021-05-21 20:26:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:26,094 INFO L225 Difference]: With dead ends: 32449 [2021-05-21 20:26:26,094 INFO L226 Difference]: Without dead ends: 31371 [2021-05-21 20:26:26,094 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 [2021-05-21 20:26:26,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31371 states. [2021-05-21 20:26:27,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31371 to 13369. [2021-05-21 20:26:27,245 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) [2021-05-21 20:26:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 71095 transitions. [2021-05-21 20:26:27,288 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 71095 transitions. Word has length 33 [2021-05-21 20:26:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:27,288 INFO L482 AbstractCegarLoop]: Abstraction has 13369 states and 71095 transitions. [2021-05-21 20:26:27,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 71095 transitions. [2021-05-21 20:26:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:27,315 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:27,315 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:27,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-21 20:26:27,315 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:27,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1590868347, now seen corresponding path program 45 times [2021-05-21 20:26:27,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:27,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289930786] [2021-05-21 20:26:27,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:27,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:27,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289930786] [2021-05-21 20:26:27,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289930786] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:27,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:27,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:27,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636949777] [2021-05-21 20:26:27,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:27,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:27,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:27,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:27,483 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) [2021-05-21 20:26:27,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:27,875 INFO L93 Difference]: Finished difference Result 32113 states and 161109 transitions. [2021-05-21 20:26:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:27,876 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 [2021-05-21 20:26:27,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:27,979 INFO L225 Difference]: With dead ends: 32113 [2021-05-21 20:26:27,979 INFO L226 Difference]: Without dead ends: 31362 [2021-05-21 20:26:27,979 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 188.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:28,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31362 states. [2021-05-21 20:26:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31362 to 13489. [2021-05-21 20:26:29,001 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) [2021-05-21 20:26:29,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13489 states to 13489 states and 71587 transitions. [2021-05-21 20:26:29,045 INFO L78 Accepts]: Start accepts. Automaton has 13489 states and 71587 transitions. Word has length 33 [2021-05-21 20:26:29,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:29,045 INFO L482 AbstractCegarLoop]: Abstraction has 13489 states and 71587 transitions. [2021-05-21 20:26:29,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:29,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13489 states and 71587 transitions. [2021-05-21 20:26:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:29,072 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:29,072 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] [2021-05-21 20:26:29,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-21 20:26:29,073 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:29,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:29,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1747749765, now seen corresponding path program 46 times [2021-05-21 20:26:29,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:29,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619368858] [2021-05-21 20:26:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:29,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:29,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619368858] [2021-05-21 20:26:29,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619368858] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:29,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:29,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:29,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485557132] [2021-05-21 20:26:29,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:29,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:29,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:29,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:29,375 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) [2021-05-21 20:26:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:29,631 INFO L93 Difference]: Finished difference Result 32127 states and 161034 transitions. [2021-05-21 20:26:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:29,631 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 [2021-05-21 20:26:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:29,729 INFO L225 Difference]: With dead ends: 32127 [2021-05-21 20:26:29,730 INFO L226 Difference]: Without dead ends: 31242 [2021-05-21 20:26:29,730 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 307.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:30,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31242 states. [2021-05-21 20:26:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31242 to 13369. [2021-05-21 20:26:30,913 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) [2021-05-21 20:26:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 71035 transitions. [2021-05-21 20:26:30,956 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 71035 transitions. Word has length 33 [2021-05-21 20:26:30,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:30,957 INFO L482 AbstractCegarLoop]: Abstraction has 13369 states and 71035 transitions. [2021-05-21 20:26:30,957 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:30,957 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 71035 transitions. [2021-05-21 20:26:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:30,984 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:30,984 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:30,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-21 20:26:30,984 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:30,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1779201187, now seen corresponding path program 47 times [2021-05-21 20:26:30,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:30,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079506668] [2021-05-21 20:26:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:31,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:31,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:31,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079506668] [2021-05-21 20:26:31,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079506668] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:31,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:31,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:31,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684018663] [2021-05-21 20:26:31,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:31,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:31,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:31,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:31,144 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) [2021-05-21 20:26:31,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:31,377 INFO L93 Difference]: Finished difference Result 32534 states and 162897 transitions. [2021-05-21 20:26:31,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:31,378 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 [2021-05-21 20:26:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:31,477 INFO L225 Difference]: With dead ends: 32534 [2021-05-21 20:26:31,478 INFO L226 Difference]: Without dead ends: 31640 [2021-05-21 20:26:31,478 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:32,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31640 states. [2021-05-21 20:26:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31640 to 13624. [2021-05-21 20:26:32,608 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) [2021-05-21 20:26:32,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 72058 transitions. [2021-05-21 20:26:32,650 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 72058 transitions. Word has length 33 [2021-05-21 20:26:32,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:32,650 INFO L482 AbstractCegarLoop]: Abstraction has 13624 states and 72058 transitions. [2021-05-21 20:26:32,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:32,650 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 72058 transitions. [2021-05-21 20:26:32,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:32,677 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:32,677 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:32,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-21 20:26:32,678 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:32,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:32,678 INFO L82 PathProgramCache]: Analyzing trace with hash 492704571, now seen corresponding path program 48 times [2021-05-21 20:26:32,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:32,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576038200] [2021-05-21 20:26:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:32,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:32,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576038200] [2021-05-21 20:26:32,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576038200] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:32,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:32,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:32,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345301041] [2021-05-21 20:26:32,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:32,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:32,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:32,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:32,819 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) [2021-05-21 20:26:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:33,041 INFO L93 Difference]: Finished difference Result 32405 states and 162128 transitions. [2021-05-21 20:26:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:33,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:33,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:33,140 INFO L225 Difference]: With dead ends: 32405 [2021-05-21 20:26:33,140 INFO L226 Difference]: Without dead ends: 31199 [2021-05-21 20:26:33,140 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 [2021-05-21 20:26:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31199 states. [2021-05-21 20:26:34,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31199 to 13183. [2021-05-21 20:26:34,286 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) [2021-05-21 20:26:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 70280 transitions. [2021-05-21 20:26:34,328 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 70280 transitions. Word has length 33 [2021-05-21 20:26:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:34,328 INFO L482 AbstractCegarLoop]: Abstraction has 13183 states and 70280 transitions. [2021-05-21 20:26:34,329 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) [2021-05-21 20:26:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 70280 transitions. [2021-05-21 20:26:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:34,356 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:34,356 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] [2021-05-21 20:26:34,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-21 20:26:34,356 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:34,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:34,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1981905761, now seen corresponding path program 49 times [2021-05-21 20:26:34,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:34,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858097542] [2021-05-21 20:26:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:34,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:34,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858097542] [2021-05-21 20:26:34,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858097542] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:34,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:34,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:34,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851365463] [2021-05-21 20:26:34,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:34,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:34,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:34,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:34,492 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) [2021-05-21 20:26:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:34,721 INFO L93 Difference]: Finished difference Result 31009 states and 156157 transitions. [2021-05-21 20:26:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:34,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:34,819 INFO L225 Difference]: With dead ends: 31009 [2021-05-21 20:26:34,819 INFO L226 Difference]: Without dead ends: 30250 [2021-05-21 20:26:34,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:35,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30250 states. [2021-05-21 20:26:36,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30250 to 13387. [2021-05-21 20:26:36,026 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) [2021-05-21 20:26:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71260 transitions. [2021-05-21 20:26:36,069 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71260 transitions. Word has length 33 [2021-05-21 20:26:36,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:36,070 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71260 transitions. [2021-05-21 20:26:36,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71260 transitions. [2021-05-21 20:26:36,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:36,097 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:36,098 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:36,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-21 20:26:36,098 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:36,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:36,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1466264573, now seen corresponding path program 50 times [2021-05-21 20:26:36,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:36,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004078777] [2021-05-21 20:26:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:36,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:36,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004078777] [2021-05-21 20:26:36,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004078777] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:36,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:36,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:36,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42037846] [2021-05-21 20:26:36,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:36,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:36,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:36,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:36,235 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) [2021-05-21 20:26:36,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:36,614 INFO L93 Difference]: Finished difference Result 31001 states and 156009 transitions. [2021-05-21 20:26:36,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:36,614 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 [2021-05-21 20:26:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:36,718 INFO L225 Difference]: With dead ends: 31001 [2021-05-21 20:26:36,719 INFO L226 Difference]: Without dead ends: 30130 [2021-05-21 20:26:36,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30130 states. [2021-05-21 20:26:37,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30130 to 13267. [2021-05-21 20:26:37,740 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) [2021-05-21 20:26:37,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70712 transitions. [2021-05-21 20:26:37,782 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70712 transitions. Word has length 33 [2021-05-21 20:26:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:37,782 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70712 transitions. [2021-05-21 20:26:37,782 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) [2021-05-21 20:26:37,782 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70712 transitions. [2021-05-21 20:26:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:37,809 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:37,809 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] [2021-05-21 20:26:37,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-21 20:26:37,810 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:37,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:37,810 INFO L82 PathProgramCache]: Analyzing trace with hash 289999997, now seen corresponding path program 51 times [2021-05-21 20:26:37,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:37,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088070187] [2021-05-21 20:26:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:38,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:38,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088070187] [2021-05-21 20:26:38,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088070187] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:38,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:38,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:38,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332143367] [2021-05-21 20:26:38,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:38,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:38,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:38,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:38,060 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) [2021-05-21 20:26:38,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:38,304 INFO L93 Difference]: Finished difference Result 30985 states and 156001 transitions. [2021-05-21 20:26:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:38,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:38,402 INFO L225 Difference]: With dead ends: 30985 [2021-05-21 20:26:38,402 INFO L226 Difference]: Without dead ends: 30226 [2021-05-21 20:26:38,402 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 259.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30226 states. [2021-05-21 20:26:39,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30226 to 13379. [2021-05-21 20:26:39,578 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) [2021-05-21 20:26:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71176 transitions. [2021-05-21 20:26:39,621 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71176 transitions. Word has length 33 [2021-05-21 20:26:39,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:39,621 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71176 transitions. [2021-05-21 20:26:39,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:39,621 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71176 transitions. [2021-05-21 20:26:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:39,648 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:39,648 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:39,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-21 20:26:39,649 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:39,649 INFO L82 PathProgramCache]: Analyzing trace with hash -506026883, now seen corresponding path program 52 times [2021-05-21 20:26:39,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:39,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648279476] [2021-05-21 20:26:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:39,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:39,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648279476] [2021-05-21 20:26:39,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648279476] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:39,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:39,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:39,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284135875] [2021-05-21 20:26:39,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:39,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:39,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:39,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:39,776 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) [2021-05-21 20:26:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:40,024 INFO L93 Difference]: Finished difference Result 30961 states and 155797 transitions. [2021-05-21 20:26:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:40,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:40,121 INFO L225 Difference]: With dead ends: 30961 [2021-05-21 20:26:40,121 INFO L226 Difference]: Without dead ends: 30114 [2021-05-21 20:26:40,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 149.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30114 states. [2021-05-21 20:26:41,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30114 to 13267. [2021-05-21 20:26:41,244 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) [2021-05-21 20:26:41,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70656 transitions. [2021-05-21 20:26:41,286 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70656 transitions. Word has length 33 [2021-05-21 20:26:41,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:41,286 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70656 transitions. [2021-05-21 20:26:41,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:41,287 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70656 transitions. [2021-05-21 20:26:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:41,315 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:41,315 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:41,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-21 20:26:41,315 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:41,315 INFO L82 PathProgramCache]: Analyzing trace with hash -566748069, now seen corresponding path program 53 times [2021-05-21 20:26:41,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:41,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055734283] [2021-05-21 20:26:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:41,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:41,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055734283] [2021-05-21 20:26:41,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055734283] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:41,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:41,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:41,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032193728] [2021-05-21 20:26:41,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:41,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:41,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:41,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:41,451 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) [2021-05-21 20:26:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:41,694 INFO L93 Difference]: Finished difference Result 30969 states and 155889 transitions. [2021-05-21 20:26:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:41,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:41,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:41,788 INFO L225 Difference]: With dead ends: 30969 [2021-05-21 20:26:41,788 INFO L226 Difference]: Without dead ends: 30218 [2021-05-21 20:26:41,789 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 [2021-05-21 20:26:42,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30218 states. [2021-05-21 20:26:42,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30218 to 13379. [2021-05-21 20:26:42,904 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) [2021-05-21 20:26:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71120 transitions. [2021-05-21 20:26:42,946 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71120 transitions. Word has length 33 [2021-05-21 20:26:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:42,946 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71120 transitions. [2021-05-21 20:26:42,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71120 transitions. [2021-05-21 20:26:42,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:42,973 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:42,973 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:42,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-21 20:26:42,973 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:42,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:42,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1047650115, now seen corresponding path program 54 times [2021-05-21 20:26:42,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:42,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736138327] [2021-05-21 20:26:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:43,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:43,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736138327] [2021-05-21 20:26:43,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736138327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:43,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:43,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:43,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253816862] [2021-05-21 20:26:43,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:43,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:43,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:43,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:43,115 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) [2021-05-21 20:26:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:43,347 INFO L93 Difference]: Finished difference Result 30953 states and 155713 transitions. [2021-05-21 20:26:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:43,347 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:43,445 INFO L225 Difference]: With dead ends: 30953 [2021-05-21 20:26:43,446 INFO L226 Difference]: Without dead ends: 30050 [2021-05-21 20:26:43,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 146.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30050 states. [2021-05-21 20:26:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30050 to 13211. [2021-05-21 20:26:44,601 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) [2021-05-21 20:26:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 70424 transitions. [2021-05-21 20:26:44,643 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 70424 transitions. Word has length 33 [2021-05-21 20:26:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:44,643 INFO L482 AbstractCegarLoop]: Abstraction has 13211 states and 70424 transitions. [2021-05-21 20:26:44,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:44,644 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 70424 transitions. [2021-05-21 20:26:44,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:44,671 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:44,671 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:44,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-21 20:26:44,671 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:44,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1071636767, now seen corresponding path program 55 times [2021-05-21 20:26:44,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:44,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473199249] [2021-05-21 20:26:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:44,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:44,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473199249] [2021-05-21 20:26:44,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473199249] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:44,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:44,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:44,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489345789] [2021-05-21 20:26:44,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:44,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:44,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:44,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:44,809 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) [2021-05-21 20:26:45,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:45,033 INFO L93 Difference]: Finished difference Result 31063 states and 156346 transitions. [2021-05-21 20:26:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:45,038 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:45,319 INFO L225 Difference]: With dead ends: 31063 [2021-05-21 20:26:45,319 INFO L226 Difference]: Without dead ends: 30304 [2021-05-21 20:26:45,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:46,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30304 states. [2021-05-21 20:26:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30304 to 13391. [2021-05-21 20:26:46,332 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) [2021-05-21 20:26:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13391 states to 13391 states and 71252 transitions. [2021-05-21 20:26:46,374 INFO L78 Accepts]: Start accepts. Automaton has 13391 states and 71252 transitions. Word has length 33 [2021-05-21 20:26:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:46,374 INFO L482 AbstractCegarLoop]: Abstraction has 13391 states and 71252 transitions. [2021-05-21 20:26:46,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 13391 states and 71252 transitions. [2021-05-21 20:26:46,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:46,402 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:46,402 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] [2021-05-21 20:26:46,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-21 20:26:46,402 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:46,402 INFO L82 PathProgramCache]: Analyzing trace with hash 224839805, now seen corresponding path program 56 times [2021-05-21 20:26:46,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:46,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112369307] [2021-05-21 20:26:46,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:46,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:46,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112369307] [2021-05-21 20:26:46,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112369307] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:46,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:46,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:46,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134917114] [2021-05-21 20:26:46,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:46,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:46,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:46,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:46,545 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) [2021-05-21 20:26:46,825 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2021-05-21 20:26:46,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:46,931 INFO L93 Difference]: Finished difference Result 31055 states and 156198 transitions. [2021-05-21 20:26:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:46,931 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:46,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:47,029 INFO L225 Difference]: With dead ends: 31055 [2021-05-21 20:26:47,029 INFO L226 Difference]: Without dead ends: 30184 [2021-05-21 20:26:47,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 325.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:47,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30184 states. [2021-05-21 20:26:48,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30184 to 13271. [2021-05-21 20:26:48,048 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) [2021-05-21 20:26:48,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 70700 transitions. [2021-05-21 20:26:48,276 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 70700 transitions. Word has length 33 [2021-05-21 20:26:48,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:48,276 INFO L482 AbstractCegarLoop]: Abstraction has 13271 states and 70700 transitions. [2021-05-21 20:26:48,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 70700 transitions. [2021-05-21 20:26:48,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:48,306 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:48,306 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] [2021-05-21 20:26:48,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-21 20:26:48,307 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:48,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:48,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1790371553, now seen corresponding path program 57 times [2021-05-21 20:26:48,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:48,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719074043] [2021-05-21 20:26:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:48,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:48,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719074043] [2021-05-21 20:26:48,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719074043] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:48,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:48,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:48,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768749470] [2021-05-21 20:26:48,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:48,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:48,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:48,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:48,455 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) [2021-05-21 20:26:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:48,690 INFO L93 Difference]: Finished difference Result 31081 states and 156347 transitions. [2021-05-21 20:26:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:48,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:48,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:48,784 INFO L225 Difference]: With dead ends: 31081 [2021-05-21 20:26:48,785 INFO L226 Difference]: Without dead ends: 30322 [2021-05-21 20:26:48,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:49,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30322 states. [2021-05-21 20:26:49,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30322 to 13395. [2021-05-21 20:26:49,962 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) [2021-05-21 20:26:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71204 transitions. [2021-05-21 20:26:50,005 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71204 transitions. Word has length 33 [2021-05-21 20:26:50,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:50,005 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71204 transitions. [2021-05-21 20:26:50,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71204 transitions. [2021-05-21 20:26:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:50,032 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:50,032 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:50,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-21 20:26:50,032 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:50,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1364631265, now seen corresponding path program 58 times [2021-05-21 20:26:50,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:50,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158415956] [2021-05-21 20:26:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:50,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:50,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158415956] [2021-05-21 20:26:50,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158415956] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:50,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:50,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:50,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323442976] [2021-05-21 20:26:50,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:50,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:50,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:50,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:50,153 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) [2021-05-21 20:26:50,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:50,369 INFO L93 Difference]: Finished difference Result 31087 states and 156240 transitions. [2021-05-21 20:26:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:50,370 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:50,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:50,470 INFO L225 Difference]: With dead ends: 31087 [2021-05-21 20:26:50,470 INFO L226 Difference]: Without dead ends: 30198 [2021-05-21 20:26:50,471 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 141.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:51,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30198 states. [2021-05-21 20:26:51,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30198 to 13271. [2021-05-21 20:26:51,616 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) [2021-05-21 20:26:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 70640 transitions. [2021-05-21 20:26:51,658 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 70640 transitions. Word has length 33 [2021-05-21 20:26:51,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:51,658 INFO L482 AbstractCegarLoop]: Abstraction has 13271 states and 70640 transitions. [2021-05-21 20:26:51,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:51,658 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 70640 transitions. [2021-05-21 20:26:51,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:51,685 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:51,685 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] [2021-05-21 20:26:51,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-21 20:26:51,685 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:51,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1647847677, now seen corresponding path program 59 times [2021-05-21 20:26:51,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:51,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371592614] [2021-05-21 20:26:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:51,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:51,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371592614] [2021-05-21 20:26:51,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371592614] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:51,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:51,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:51,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746734790] [2021-05-21 20:26:51,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:51,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:51,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:51,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:51,852 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) [2021-05-21 20:26:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:52,085 INFO L93 Difference]: Finished difference Result 31061 states and 156215 transitions. [2021-05-21 20:26:52,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:52,086 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:52,183 INFO L225 Difference]: With dead ends: 31061 [2021-05-21 20:26:52,184 INFO L226 Difference]: Without dead ends: 30310 [2021-05-21 20:26:52,184 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 [2021-05-21 20:26:53,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30310 states. [2021-05-21 20:26:53,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30310 to 13391. [2021-05-21 20:26:53,350 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) [2021-05-21 20:26:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13391 states to 13391 states and 71132 transitions. [2021-05-21 20:26:53,393 INFO L78 Accepts]: Start accepts. Automaton has 13391 states and 71132 transitions. Word has length 33 [2021-05-21 20:26:53,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:53,393 INFO L482 AbstractCegarLoop]: Abstraction has 13391 states and 71132 transitions. [2021-05-21 20:26:53,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:53,393 INFO L276 IsEmpty]: Start isEmpty. Operand 13391 states and 71132 transitions. [2021-05-21 20:26:53,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:53,421 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:53,421 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] [2021-05-21 20:26:53,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-21 20:26:53,422 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:53,422 INFO L82 PathProgramCache]: Analyzing trace with hash 337266655, now seen corresponding path program 60 times [2021-05-21 20:26:53,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:53,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704095969] [2021-05-21 20:26:53,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:53,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:53,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704095969] [2021-05-21 20:26:53,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704095969] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:53,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:53,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:53,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107548985] [2021-05-21 20:26:53,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:53,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:53,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:53,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:53,589 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) [2021-05-21 20:26:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:53,813 INFO L93 Difference]: Finished difference Result 31075 states and 156140 transitions. [2021-05-21 20:26:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:53,813 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:53,911 INFO L225 Difference]: With dead ends: 31075 [2021-05-21 20:26:53,911 INFO L226 Difference]: Without dead ends: 30130 [2021-05-21 20:26:53,911 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 [2021-05-21 20:26:54,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30130 states. [2021-05-21 20:26:55,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30130 to 13211. [2021-05-21 20:26:55,071 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) [2021-05-21 20:26:55,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 70396 transitions. [2021-05-21 20:26:55,114 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 70396 transitions. Word has length 33 [2021-05-21 20:26:55,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:55,114 INFO L482 AbstractCegarLoop]: Abstraction has 13211 states and 70396 transitions. [2021-05-21 20:26:55,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:55,115 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 70396 transitions. [2021-05-21 20:26:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:55,142 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:55,142 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:26:55,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-21 20:26:55,143 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:55,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:55,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1924501123, now seen corresponding path program 61 times [2021-05-21 20:26:55,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:55,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941920100] [2021-05-21 20:26:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:55,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:55,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941920100] [2021-05-21 20:26:55,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941920100] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:55,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:55,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:55,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989571237] [2021-05-21 20:26:55,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:55,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:55,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:55,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:55,288 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) [2021-05-21 20:26:55,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:55,667 INFO L93 Difference]: Finished difference Result 31003 states and 156062 transitions. [2021-05-21 20:26:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:55,667 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:55,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:55,768 INFO L225 Difference]: With dead ends: 31003 [2021-05-21 20:26:55,768 INFO L226 Difference]: Without dead ends: 30244 [2021-05-21 20:26:55,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30244 states. [2021-05-21 20:26:56,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30244 to 13379. [2021-05-21 20:26:56,781 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) [2021-05-21 20:26:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71176 transitions. [2021-05-21 20:26:56,823 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71176 transitions. Word has length 33 [2021-05-21 20:26:56,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:56,823 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71176 transitions. [2021-05-21 20:26:56,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:26:56,823 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71176 transitions. [2021-05-21 20:26:56,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:56,850 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:56,850 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] [2021-05-21 20:26:56,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-21 20:26:56,851 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:56,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:56,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1574439293, now seen corresponding path program 62 times [2021-05-21 20:26:56,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:56,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252616199] [2021-05-21 20:26:56,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:57,022 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-05-21 20:26:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:57,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:57,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252616199] [2021-05-21 20:26:57,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252616199] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:57,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:57,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:57,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115589856] [2021-05-21 20:26:57,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:57,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:57,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:57,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:57,094 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) [2021-05-21 20:26:57,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:57,321 INFO L93 Difference]: Finished difference Result 30979 states and 155858 transitions. [2021-05-21 20:26:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:57,322 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 [2021-05-21 20:26:57,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:57,417 INFO L225 Difference]: With dead ends: 30979 [2021-05-21 20:26:57,418 INFO L226 Difference]: Without dead ends: 30132 [2021-05-21 20:26:57,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 263.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:58,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30132 states. [2021-05-21 20:26:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30132 to 13267. [2021-05-21 20:26:58,584 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) [2021-05-21 20:26:58,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70656 transitions. [2021-05-21 20:26:58,626 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70656 transitions. Word has length 33 [2021-05-21 20:26:58,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:26:58,626 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70656 transitions. [2021-05-21 20:26:58,626 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) [2021-05-21 20:26:58,626 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70656 transitions. [2021-05-21 20:26:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:26:58,653 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:26:58,653 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] [2021-05-21 20:26:58,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-21 20:26:58,653 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:26:58,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:26:58,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1636005983, now seen corresponding path program 63 times [2021-05-21 20:26:58,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:26:58,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353071812] [2021-05-21 20:26:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:26:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:26:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:26:58,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:26:58,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353071812] [2021-05-21 20:26:58,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353071812] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:26:58,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:26:58,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:26:58,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779451057] [2021-05-21 20:26:58,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:26:58,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:26:58,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:26:58,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:26:58,791 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) [2021-05-21 20:26:59,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:26:59,031 INFO L93 Difference]: Finished difference Result 31045 states and 156167 transitions. [2021-05-21 20:26:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:26:59,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:26:59,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:26:59,131 INFO L225 Difference]: With dead ends: 31045 [2021-05-21 20:26:59,131 INFO L226 Difference]: Without dead ends: 30286 [2021-05-21 20:26:59,131 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 149.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:26:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30286 states. [2021-05-21 20:27:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30286 to 13391. [2021-05-21 20:27:00,266 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) [2021-05-21 20:27:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13391 states to 13391 states and 71160 transitions. [2021-05-21 20:27:00,308 INFO L78 Accepts]: Start accepts. Automaton has 13391 states and 71160 transitions. Word has length 33 [2021-05-21 20:27:00,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:00,308 INFO L482 AbstractCegarLoop]: Abstraction has 13391 states and 71160 transitions. [2021-05-21 20:27:00,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:00,308 INFO L276 IsEmpty]: Start isEmpty. Operand 13391 states and 71160 transitions. [2021-05-21 20:27:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:00,336 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:00,336 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] [2021-05-21 20:27:00,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-21 20:27:00,336 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:00,336 INFO L82 PathProgramCache]: Analyzing trace with hash 93415805, now seen corresponding path program 64 times [2021-05-21 20:27:00,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:00,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190931985] [2021-05-21 20:27:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:00,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:00,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190931985] [2021-05-21 20:27:00,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190931985] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:00,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:00,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:00,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777673044] [2021-05-21 20:27:00,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:00,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:00,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:00,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:00,472 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) [2021-05-21 20:27:00,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:00,713 INFO L93 Difference]: Finished difference Result 31051 states and 156060 transitions. [2021-05-21 20:27:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:00,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:00,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:00,808 INFO L225 Difference]: With dead ends: 31051 [2021-05-21 20:27:00,808 INFO L226 Difference]: Without dead ends: 30162 [2021-05-21 20:27:00,809 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 157.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:01,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30162 states. [2021-05-21 20:27:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30162 to 13267. [2021-05-21 20:27:01,936 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) [2021-05-21 20:27:01,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70600 transitions. [2021-05-21 20:27:01,977 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70600 transitions. Word has length 33 [2021-05-21 20:27:01,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:01,977 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70600 transitions. [2021-05-21 20:27:01,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:01,977 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70600 transitions. [2021-05-21 20:27:02,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:02,005 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:02,005 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:02,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-21 20:27:02,005 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:02,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:02,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1606004355, now seen corresponding path program 65 times [2021-05-21 20:27:02,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:02,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826516108] [2021-05-21 20:27:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:02,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:02,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826516108] [2021-05-21 20:27:02,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826516108] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:02,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:02,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:02,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148058351] [2021-05-21 20:27:02,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:02,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:02,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:02,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:02,165 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) [2021-05-21 20:27:02,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:02,408 INFO L93 Difference]: Finished difference Result 30985 states and 155875 transitions. [2021-05-21 20:27:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:02,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:02,502 INFO L225 Difference]: With dead ends: 30985 [2021-05-21 20:27:02,503 INFO L226 Difference]: Without dead ends: 30250 [2021-05-21 20:27:02,503 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:03,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30250 states. [2021-05-21 20:27:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30250 to 13379. [2021-05-21 20:27:03,704 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) [2021-05-21 20:27:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71064 transitions. [2021-05-21 20:27:03,747 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71064 transitions. Word has length 33 [2021-05-21 20:27:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:03,747 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71064 transitions. [2021-05-21 20:27:03,747 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) [2021-05-21 20:27:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71064 transitions. [2021-05-21 20:27:03,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:03,775 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:03,775 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:03,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-21 20:27:03,775 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:03,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:03,775 INFO L82 PathProgramCache]: Analyzing trace with hash 2071439583, now seen corresponding path program 66 times [2021-05-21 20:27:03,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:03,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059799285] [2021-05-21 20:27:03,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:03,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:03,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059799285] [2021-05-21 20:27:03,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059799285] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:03,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:03,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:03,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334926830] [2021-05-21 20:27:03,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:03,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:03,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:03,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:03,914 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) [2021-05-21 20:27:04,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:04,156 INFO L93 Difference]: Finished difference Result 31015 states and 155872 transitions. [2021-05-21 20:27:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:04,156 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 [2021-05-21 20:27:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:04,430 INFO L225 Difference]: With dead ends: 31015 [2021-05-21 20:27:04,430 INFO L226 Difference]: Without dead ends: 30082 [2021-05-21 20:27:04,430 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 [2021-05-21 20:27:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30082 states. [2021-05-21 20:27:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30082 to 13211. [2021-05-21 20:27:05,417 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) [2021-05-21 20:27:05,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 70368 transitions. [2021-05-21 20:27:05,460 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 70368 transitions. Word has length 33 [2021-05-21 20:27:05,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:05,460 INFO L482 AbstractCegarLoop]: Abstraction has 13211 states and 70368 transitions. [2021-05-21 20:27:05,460 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) [2021-05-21 20:27:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 70368 transitions. [2021-05-21 20:27:05,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:05,488 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:05,488 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:05,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-21 20:27:05,488 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:05,488 INFO L82 PathProgramCache]: Analyzing trace with hash 540641755, now seen corresponding path program 67 times [2021-05-21 20:27:05,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:05,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280234127] [2021-05-21 20:27:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:05,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:05,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280234127] [2021-05-21 20:27:05,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280234127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:05,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:05,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:05,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210125223] [2021-05-21 20:27:05,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:05,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:05,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:05,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:05,637 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) [2021-05-21 20:27:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:06,019 INFO L93 Difference]: Finished difference Result 30975 states and 155934 transitions. [2021-05-21 20:27:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:06,020 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:06,118 INFO L225 Difference]: With dead ends: 30975 [2021-05-21 20:27:06,119 INFO L226 Difference]: Without dead ends: 30224 [2021-05-21 20:27:06,119 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 [2021-05-21 20:27:06,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30224 states. [2021-05-21 20:27:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30224 to 13379. [2021-05-21 20:27:07,156 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) [2021-05-21 20:27:07,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71148 transitions. [2021-05-21 20:27:07,392 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71148 transitions. Word has length 33 [2021-05-21 20:27:07,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:07,392 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71148 transitions. [2021-05-21 20:27:07,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:07,392 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71148 transitions. [2021-05-21 20:27:07,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:07,423 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:07,423 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:07,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-21 20:27:07,423 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:07,423 INFO L82 PathProgramCache]: Analyzing trace with hash 59739709, now seen corresponding path program 68 times [2021-05-21 20:27:07,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:07,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473170968] [2021-05-21 20:27:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:07,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:07,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473170968] [2021-05-21 20:27:07,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473170968] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:07,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:07,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:07,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137103291] [2021-05-21 20:27:07,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:07,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:07,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:07,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:07,568 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) [2021-05-21 20:27:07,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:07,791 INFO L93 Difference]: Finished difference Result 30959 states and 155758 transitions. [2021-05-21 20:27:07,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:07,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:07,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:07,887 INFO L225 Difference]: With dead ends: 30959 [2021-05-21 20:27:07,887 INFO L226 Difference]: Without dead ends: 30112 [2021-05-21 20:27:07,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:08,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30112 states. [2021-05-21 20:27:09,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30112 to 13267. [2021-05-21 20:27:09,060 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) [2021-05-21 20:27:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70628 transitions. [2021-05-21 20:27:09,101 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70628 transitions. Word has length 33 [2021-05-21 20:27:09,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:09,101 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70628 transitions. [2021-05-21 20:27:09,101 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) [2021-05-21 20:27:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70628 transitions. [2021-05-21 20:27:09,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:09,128 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:09,128 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] [2021-05-21 20:27:09,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-21 20:27:09,128 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:09,129 INFO L82 PathProgramCache]: Analyzing trace with hash -193818435, now seen corresponding path program 69 times [2021-05-21 20:27:09,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:09,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887867340] [2021-05-21 20:27:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:09,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:09,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887867340] [2021-05-21 20:27:09,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887867340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:09,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:09,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:09,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620079138] [2021-05-21 20:27:09,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:09,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:09,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:09,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:09,276 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) [2021-05-21 20:27:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:09,503 INFO L93 Difference]: Finished difference Result 31013 states and 156023 transitions. [2021-05-21 20:27:09,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:09,504 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 [2021-05-21 20:27:09,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:09,598 INFO L225 Difference]: With dead ends: 31013 [2021-05-21 20:27:09,598 INFO L226 Difference]: Without dead ends: 30262 [2021-05-21 20:27:09,598 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 169.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30262 states. [2021-05-21 20:27:10,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30262 to 13387. [2021-05-21 20:27:10,713 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) [2021-05-21 20:27:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71120 transitions. [2021-05-21 20:27:10,755 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71120 transitions. Word has length 33 [2021-05-21 20:27:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:10,755 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71120 transitions. [2021-05-21 20:27:10,755 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) [2021-05-21 20:27:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71120 transitions. [2021-05-21 20:27:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:10,782 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:10,782 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] [2021-05-21 20:27:10,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-21 20:27:10,782 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:10,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:10,782 INFO L82 PathProgramCache]: Analyzing trace with hash 822237373, now seen corresponding path program 70 times [2021-05-21 20:27:10,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:10,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596200066] [2021-05-21 20:27:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:10,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:10,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596200066] [2021-05-21 20:27:10,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596200066] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:10,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:10,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:10,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370927099] [2021-05-21 20:27:10,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:10,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:10,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:10,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:10,936 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) [2021-05-21 20:27:11,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:11,169 INFO L93 Difference]: Finished difference Result 31027 states and 155948 transitions. [2021-05-21 20:27:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:11,169 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 [2021-05-21 20:27:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:11,266 INFO L225 Difference]: With dead ends: 31027 [2021-05-21 20:27:11,266 INFO L226 Difference]: Without dead ends: 30142 [2021-05-21 20:27:11,266 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:12,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30142 states. [2021-05-21 20:27:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30142 to 13267. [2021-05-21 20:27:12,379 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) [2021-05-21 20:27:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 70572 transitions. [2021-05-21 20:27:12,422 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 70572 transitions. Word has length 33 [2021-05-21 20:27:12,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:12,422 INFO L482 AbstractCegarLoop]: Abstraction has 13267 states and 70572 transitions. [2021-05-21 20:27:12,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 70572 transitions. [2021-05-21 20:27:12,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:12,450 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:12,450 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] [2021-05-21 20:27:12,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-21 20:27:12,450 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:12,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:12,450 INFO L82 PathProgramCache]: Analyzing trace with hash -983204705, now seen corresponding path program 71 times [2021-05-21 20:27:12,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:12,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856023628] [2021-05-21 20:27:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:12,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:12,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856023628] [2021-05-21 20:27:12,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856023628] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:12,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:12,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:12,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376230553] [2021-05-21 20:27:12,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:12,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:12,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:12,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:12,600 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) [2021-05-21 20:27:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:12,817 INFO L93 Difference]: Finished difference Result 30973 states and 155803 transitions. [2021-05-21 20:27:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:12,819 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 [2021-05-21 20:27:12,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:12,913 INFO L225 Difference]: With dead ends: 30973 [2021-05-21 20:27:12,913 INFO L226 Difference]: Without dead ends: 30238 [2021-05-21 20:27:12,913 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 171.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30238 states. [2021-05-21 20:27:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30238 to 13379. [2021-05-21 20:27:14,064 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) [2021-05-21 20:27:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71036 transitions. [2021-05-21 20:27:14,104 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71036 transitions. Word has length 33 [2021-05-21 20:27:14,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:14,105 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71036 transitions. [2021-05-21 20:27:14,105 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) [2021-05-21 20:27:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71036 transitions. [2021-05-21 20:27:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:14,132 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:14,132 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] [2021-05-21 20:27:14,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-21 20:27:14,132 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:14,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:14,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1348407677, now seen corresponding path program 72 times [2021-05-21 20:27:14,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:14,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880571302] [2021-05-21 20:27:14,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:14,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:14,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880571302] [2021-05-21 20:27:14,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880571302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:14,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:14,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:14,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838937564] [2021-05-21 20:27:14,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:14,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:14,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:14,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:14,292 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) [2021-05-21 20:27:14,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:14,665 INFO L93 Difference]: Finished difference Result 31003 states and 155800 transitions. [2021-05-21 20:27:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:14,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:14,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:14,766 INFO L225 Difference]: With dead ends: 31003 [2021-05-21 20:27:14,766 INFO L226 Difference]: Without dead ends: 30042 [2021-05-21 20:27:14,766 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 [2021-05-21 20:27:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30042 states. [2021-05-21 20:27:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30042 to 13183. [2021-05-21 20:27:15,778 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) [2021-05-21 20:27:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 70266 transitions. [2021-05-21 20:27:15,819 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 70266 transitions. Word has length 33 [2021-05-21 20:27:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:15,819 INFO L482 AbstractCegarLoop]: Abstraction has 13183 states and 70266 transitions. [2021-05-21 20:27:15,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 70266 transitions. [2021-05-21 20:27:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:15,845 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:15,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:15,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-21 20:27:15,846 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:15,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1704023899, now seen corresponding path program 73 times [2021-05-21 20:27:15,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:15,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325742340] [2021-05-21 20:27:15,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:16,102 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-21 20:27:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:16,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:16,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325742340] [2021-05-21 20:27:16,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325742340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:16,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:16,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:16,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781773122] [2021-05-21 20:27:16,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:16,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:16,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:16,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:16,104 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) [2021-05-21 20:27:16,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:16,352 INFO L93 Difference]: Finished difference Result 31896 states and 160380 transitions. [2021-05-21 20:27:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:16,353 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:16,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:16,456 INFO L225 Difference]: With dead ends: 31896 [2021-05-21 20:27:16,457 INFO L226 Difference]: Without dead ends: 31137 [2021-05-21 20:27:16,457 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 277.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:17,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31137 states. [2021-05-21 20:27:17,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31137 to 13443. [2021-05-21 20:27:17,654 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) [2021-05-21 20:27:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13443 states to 13443 states and 71570 transitions. [2021-05-21 20:27:17,697 INFO L78 Accepts]: Start accepts. Automaton has 13443 states and 71570 transitions. Word has length 33 [2021-05-21 20:27:17,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:17,698 INFO L482 AbstractCegarLoop]: Abstraction has 13443 states and 71570 transitions. [2021-05-21 20:27:17,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 13443 states and 71570 transitions. [2021-05-21 20:27:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:17,725 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:17,725 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:17,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-21 20:27:17,725 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:17,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash 907997019, now seen corresponding path program 74 times [2021-05-21 20:27:17,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:17,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160493664] [2021-05-21 20:27:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:17,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:17,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160493664] [2021-05-21 20:27:17,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160493664] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:17,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:17,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:17,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43797995] [2021-05-21 20:27:17,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:17,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:17,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:17,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:17,874 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) [2021-05-21 20:27:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:18,099 INFO L93 Difference]: Finished difference Result 31872 states and 160176 transitions. [2021-05-21 20:27:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:18,099 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:18,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:18,198 INFO L225 Difference]: With dead ends: 31872 [2021-05-21 20:27:18,198 INFO L226 Difference]: Without dead ends: 31025 [2021-05-21 20:27:18,198 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 [2021-05-21 20:27:18,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31025 states. [2021-05-21 20:27:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31025 to 13331. [2021-05-21 20:27:19,348 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) [2021-05-21 20:27:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13331 states to 13331 states and 71050 transitions. [2021-05-21 20:27:19,390 INFO L78 Accepts]: Start accepts. Automaton has 13331 states and 71050 transitions. Word has length 33 [2021-05-21 20:27:19,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:19,390 INFO L482 AbstractCegarLoop]: Abstraction has 13331 states and 71050 transitions. [2021-05-21 20:27:19,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:19,390 INFO L276 IsEmpty]: Start isEmpty. Operand 13331 states and 71050 transitions. [2021-05-21 20:27:19,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:19,417 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:19,417 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:19,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-21 20:27:19,417 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:19,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:19,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1278047933, now seen corresponding path program 75 times [2021-05-21 20:27:19,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:19,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363934016] [2021-05-21 20:27:19,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:19,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:19,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363934016] [2021-05-21 20:27:19,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363934016] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:19,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:19,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:19,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044023916] [2021-05-21 20:27:19,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:19,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:19,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:19,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:19,573 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) [2021-05-21 20:27:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:19,799 INFO L93 Difference]: Finished difference Result 32131 states and 161383 transitions. [2021-05-21 20:27:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:19,897 INFO L225 Difference]: With dead ends: 32131 [2021-05-21 20:27:19,897 INFO L226 Difference]: Without dead ends: 31372 [2021-05-21 20:27:19,897 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 [2021-05-21 20:27:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31372 states. [2021-05-21 20:27:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31372 to 13519. [2021-05-21 20:27:21,116 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) [2021-05-21 20:27:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13519 states to 13519 states and 71874 transitions. [2021-05-21 20:27:21,158 INFO L78 Accepts]: Start accepts. Automaton has 13519 states and 71874 transitions. Word has length 33 [2021-05-21 20:27:21,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:21,159 INFO L482 AbstractCegarLoop]: Abstraction has 13519 states and 71874 transitions. [2021-05-21 20:27:21,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:21,159 INFO L276 IsEmpty]: Start isEmpty. Operand 13519 states and 71874 transitions. [2021-05-21 20:27:21,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:21,186 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:21,186 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:21,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-21 20:27:21,186 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:21,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:21,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1707749211, now seen corresponding path program 76 times [2021-05-21 20:27:21,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:21,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574257423] [2021-05-21 20:27:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:21,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:21,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574257423] [2021-05-21 20:27:21,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574257423] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:21,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:21,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:21,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426724606] [2021-05-21 20:27:21,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:21,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:21,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:21,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:21,343 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) [2021-05-21 20:27:21,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:21,551 INFO L93 Difference]: Finished difference Result 32266 states and 161854 transitions. [2021-05-21 20:27:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:21,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:21,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:21,650 INFO L225 Difference]: With dead ends: 32266 [2021-05-21 20:27:21,650 INFO L226 Difference]: Without dead ends: 31184 [2021-05-21 20:27:21,650 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 [2021-05-21 20:27:22,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31184 states. [2021-05-21 20:27:22,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31184 to 13331. [2021-05-21 20:27:22,997 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) [2021-05-21 20:27:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13331 states to 13331 states and 70962 transitions. [2021-05-21 20:27:23,042 INFO L78 Accepts]: Start accepts. Automaton has 13331 states and 70962 transitions. Word has length 33 [2021-05-21 20:27:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:23,042 INFO L482 AbstractCegarLoop]: Abstraction has 13331 states and 70962 transitions. [2021-05-21 20:27:23,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 13331 states and 70962 transitions. [2021-05-21 20:27:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:23,070 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:23,070 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:23,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-21 20:27:23,071 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:23,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:23,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1954011301, now seen corresponding path program 77 times [2021-05-21 20:27:23,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:23,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121735761] [2021-05-21 20:27:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:23,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:23,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121735761] [2021-05-21 20:27:23,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121735761] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:23,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:23,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:23,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567894506] [2021-05-21 20:27:23,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:23,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:23,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:23,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:23,223 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) [2021-05-21 20:27:23,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:23,442 INFO L93 Difference]: Finished difference Result 32071 states and 161059 transitions. [2021-05-21 20:27:23,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:23,442 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 [2021-05-21 20:27:23,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:23,753 INFO L225 Difference]: With dead ends: 32071 [2021-05-21 20:27:23,753 INFO L226 Difference]: Without dead ends: 31336 [2021-05-21 20:27:23,753 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31336 states. [2021-05-21 20:27:24,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31336 to 13507. [2021-05-21 20:27:24,786 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) [2021-05-21 20:27:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 71746 transitions. [2021-05-21 20:27:24,829 INFO L78 Accepts]: Start accepts. Automaton has 13507 states and 71746 transitions. Word has length 33 [2021-05-21 20:27:24,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:24,829 INFO L482 AbstractCegarLoop]: Abstraction has 13507 states and 71746 transitions. [2021-05-21 20:27:24,829 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) [2021-05-21 20:27:24,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13507 states and 71746 transitions. [2021-05-21 20:27:24,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:24,857 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:24,857 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] [2021-05-21 20:27:24,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-21 20:27:24,857 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:24,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:24,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1878476995, now seen corresponding path program 78 times [2021-05-21 20:27:24,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:24,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612057448] [2021-05-21 20:27:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:25,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:25,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:25,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612057448] [2021-05-21 20:27:25,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612057448] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:25,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:25,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:25,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31391373] [2021-05-21 20:27:25,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:25,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:25,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:25,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:25,014 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) [2021-05-21 20:27:25,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:25,362 INFO L93 Difference]: Finished difference Result 32230 states and 161634 transitions. [2021-05-21 20:27:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:25,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:25,462 INFO L225 Difference]: With dead ends: 32230 [2021-05-21 20:27:25,462 INFO L226 Difference]: Without dead ends: 31072 [2021-05-21 20:27:25,462 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:26,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31072 states. [2021-05-21 20:27:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31072 to 13243. [2021-05-21 20:27:26,505 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) [2021-05-21 20:27:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70570 transitions. [2021-05-21 20:27:26,719 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70570 transitions. Word has length 33 [2021-05-21 20:27:26,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:26,719 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70570 transitions. [2021-05-21 20:27:26,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70570 transitions. [2021-05-21 20:27:26,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:26,748 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:26,748 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:26,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-21 20:27:26,748 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:26,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:26,748 INFO L82 PathProgramCache]: Analyzing trace with hash -341157187, now seen corresponding path program 79 times [2021-05-21 20:27:26,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:26,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846677137] [2021-05-21 20:27:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:26,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:26,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846677137] [2021-05-21 20:27:26,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846677137] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:26,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:26,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:26,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644601661] [2021-05-21 20:27:26,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:26,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:26,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:26,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:26,886 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) [2021-05-21 20:27:27,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:27,118 INFO L93 Difference]: Finished difference Result 31607 states and 158942 transitions. [2021-05-21 20:27:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:27,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:27,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:27,221 INFO L225 Difference]: With dead ends: 31607 [2021-05-21 20:27:27,221 INFO L226 Difference]: Without dead ends: 30848 [2021-05-21 20:27:27,222 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 145.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30848 states. [2021-05-21 20:27:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30848 to 13411. [2021-05-21 20:27:28,401 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) [2021-05-21 20:27:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13411 states to 13411 states and 71350 transitions. [2021-05-21 20:27:28,445 INFO L78 Accepts]: Start accepts. Automaton has 13411 states and 71350 transitions. Word has length 33 [2021-05-21 20:27:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:28,445 INFO L482 AbstractCegarLoop]: Abstraction has 13411 states and 71350 transitions. [2021-05-21 20:27:28,445 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) [2021-05-21 20:27:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 13411 states and 71350 transitions. [2021-05-21 20:27:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:28,473 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:28,473 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:28,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-05-21 20:27:28,473 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:28,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1137184067, now seen corresponding path program 80 times [2021-05-21 20:27:28,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:28,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80062242] [2021-05-21 20:27:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:28,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:28,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80062242] [2021-05-21 20:27:28,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80062242] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:28,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:28,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:28,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037177888] [2021-05-21 20:27:28,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:28,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:28,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:28,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:28,600 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) [2021-05-21 20:27:28,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:28,823 INFO L93 Difference]: Finished difference Result 31583 states and 158738 transitions. [2021-05-21 20:27:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:28,823 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:28,923 INFO L225 Difference]: With dead ends: 31583 [2021-05-21 20:27:28,923 INFO L226 Difference]: Without dead ends: 30736 [2021-05-21 20:27:28,924 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30736 states. [2021-05-21 20:27:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30736 to 13299. [2021-05-21 20:27:30,058 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) [2021-05-21 20:27:30,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13299 states to 13299 states and 70830 transitions. [2021-05-21 20:27:30,099 INFO L78 Accepts]: Start accepts. Automaton has 13299 states and 70830 transitions. Word has length 33 [2021-05-21 20:27:30,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:30,099 INFO L482 AbstractCegarLoop]: Abstraction has 13299 states and 70830 transitions. [2021-05-21 20:27:30,100 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) [2021-05-21 20:27:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 13299 states and 70830 transitions. [2021-05-21 20:27:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:30,127 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:30,127 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] [2021-05-21 20:27:30,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-21 20:27:30,127 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:30,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:30,127 INFO L82 PathProgramCache]: Analyzing trace with hash -104108483, now seen corresponding path program 81 times [2021-05-21 20:27:30,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:30,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994406088] [2021-05-21 20:27:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:30,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:30,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994406088] [2021-05-21 20:27:30,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994406088] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:30,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:30,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:30,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579165306] [2021-05-21 20:27:30,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:30,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:30,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:30,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:30,255 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) [2021-05-21 20:27:30,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:30,477 INFO L93 Difference]: Finished difference Result 31649 states and 159047 transitions. [2021-05-21 20:27:30,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:30,477 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 [2021-05-21 20:27:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:30,576 INFO L225 Difference]: With dead ends: 31649 [2021-05-21 20:27:30,576 INFO L226 Difference]: Without dead ends: 30890 [2021-05-21 20:27:30,576 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 [2021-05-21 20:27:31,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30890 states. [2021-05-21 20:27:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30890 to 13423. [2021-05-21 20:27:31,707 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) [2021-05-21 20:27:31,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13423 states to 13423 states and 71334 transitions. [2021-05-21 20:27:31,748 INFO L78 Accepts]: Start accepts. Automaton has 13423 states and 71334 transitions. Word has length 33 [2021-05-21 20:27:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:31,748 INFO L482 AbstractCegarLoop]: Abstraction has 13423 states and 71334 transitions. [2021-05-21 20:27:31,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 13423 states and 71334 transitions. [2021-05-21 20:27:31,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:31,776 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:31,776 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:31,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-21 20:27:31,776 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:31,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:31,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1646698661, now seen corresponding path program 82 times [2021-05-21 20:27:31,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:31,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258894398] [2021-05-21 20:27:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:31,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:31,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258894398] [2021-05-21 20:27:31,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258894398] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:31,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:31,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:31,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536266803] [2021-05-21 20:27:31,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:31,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:31,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:31,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:31,903 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) [2021-05-21 20:27:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:32,129 INFO L93 Difference]: Finished difference Result 31655 states and 158940 transitions. [2021-05-21 20:27:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:32,129 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:32,226 INFO L225 Difference]: With dead ends: 31655 [2021-05-21 20:27:32,227 INFO L226 Difference]: Without dead ends: 30766 [2021-05-21 20:27:32,227 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30766 states. [2021-05-21 20:27:33,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30766 to 13299. [2021-05-21 20:27:33,366 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) [2021-05-21 20:27:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13299 states to 13299 states and 70774 transitions. [2021-05-21 20:27:33,407 INFO L78 Accepts]: Start accepts. Automaton has 13299 states and 70774 transitions. Word has length 33 [2021-05-21 20:27:33,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:33,407 INFO L482 AbstractCegarLoop]: Abstraction has 13299 states and 70774 transitions. [2021-05-21 20:27:33,407 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) [2021-05-21 20:27:33,407 INFO L276 IsEmpty]: Start isEmpty. Operand 13299 states and 70774 transitions. [2021-05-21 20:27:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:33,434 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:33,434 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] [2021-05-21 20:27:33,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-21 20:27:33,434 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:33,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:33,435 INFO L82 PathProgramCache]: Analyzing trace with hash 948848475, now seen corresponding path program 83 times [2021-05-21 20:27:33,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:33,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819803482] [2021-05-21 20:27:33,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:33,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:33,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819803482] [2021-05-21 20:27:33,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819803482] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:33,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:33,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:33,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937006820] [2021-05-21 20:27:33,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:33,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:33,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:33,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:33,577 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) [2021-05-21 20:27:33,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:33,936 INFO L93 Difference]: Finished difference Result 31589 states and 158755 transitions. [2021-05-21 20:27:33,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:33,936 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 [2021-05-21 20:27:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:34,038 INFO L225 Difference]: With dead ends: 31589 [2021-05-21 20:27:34,038 INFO L226 Difference]: Without dead ends: 30854 [2021-05-21 20:27:34,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:34,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30854 states. [2021-05-21 20:27:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30854 to 13411. [2021-05-21 20:27:35,061 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) [2021-05-21 20:27:35,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13411 states to 13411 states and 71238 transitions. [2021-05-21 20:27:35,102 INFO L78 Accepts]: Start accepts. Automaton has 13411 states and 71238 transitions. Word has length 33 [2021-05-21 20:27:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:35,102 INFO L482 AbstractCegarLoop]: Abstraction has 13411 states and 71238 transitions. [2021-05-21 20:27:35,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 13411 states and 71238 transitions. [2021-05-21 20:27:35,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:35,129 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:35,129 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] [2021-05-21 20:27:35,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-05-21 20:27:35,129 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:35,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:35,129 INFO L82 PathProgramCache]: Analyzing trace with hash 331325117, now seen corresponding path program 84 times [2021-05-21 20:27:35,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:35,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169515852] [2021-05-21 20:27:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:35,359 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-21 20:27:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:35,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:35,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169515852] [2021-05-21 20:27:35,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169515852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:35,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:35,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:35,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69928171] [2021-05-21 20:27:35,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:35,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:35,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:35,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:35,385 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) [2021-05-21 20:27:35,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:35,646 INFO L93 Difference]: Finished difference Result 31619 states and 158752 transitions. [2021-05-21 20:27:35,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:35,647 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 [2021-05-21 20:27:35,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:35,745 INFO L225 Difference]: With dead ends: 31619 [2021-05-21 20:27:35,745 INFO L226 Difference]: Without dead ends: 30686 [2021-05-21 20:27:35,745 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 279.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:36,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30686 states. [2021-05-21 20:27:36,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30686 to 13243. [2021-05-21 20:27:36,928 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) [2021-05-21 20:27:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70542 transitions. [2021-05-21 20:27:36,971 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70542 transitions. Word has length 33 [2021-05-21 20:27:36,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:36,972 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70542 transitions. [2021-05-21 20:27:36,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:36,972 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70542 transitions. [2021-05-21 20:27:36,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:36,999 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:36,999 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:36,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-05-21 20:27:36,999 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:36,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:36,999 INFO L82 PathProgramCache]: Analyzing trace with hash -163558113, now seen corresponding path program 85 times [2021-05-21 20:27:36,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:36,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686363474] [2021-05-21 20:27:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:37,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:37,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686363474] [2021-05-21 20:27:37,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686363474] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:37,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:37,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:37,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017574213] [2021-05-21 20:27:37,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:37,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:37,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:37,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:37,142 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) [2021-05-21 20:27:37,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:37,381 INFO L93 Difference]: Finished difference Result 32290 states and 162019 transitions. [2021-05-21 20:27:37,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:37,381 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:37,482 INFO L225 Difference]: With dead ends: 32290 [2021-05-21 20:27:37,482 INFO L226 Difference]: Without dead ends: 31531 [2021-05-21 20:27:37,482 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 [2021-05-21 20:27:38,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31531 states. [2021-05-21 20:27:38,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31531 to 13557. [2021-05-21 20:27:38,644 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) [2021-05-21 20:27:38,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13557 states to 13557 states and 72031 transitions. [2021-05-21 20:27:38,686 INFO L78 Accepts]: Start accepts. Automaton has 13557 states and 72031 transitions. Word has length 33 [2021-05-21 20:27:38,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:38,686 INFO L482 AbstractCegarLoop]: Abstraction has 13557 states and 72031 transitions. [2021-05-21 20:27:38,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:38,686 INFO L276 IsEmpty]: Start isEmpty. Operand 13557 states and 72031 transitions. [2021-05-21 20:27:38,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:38,713 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:38,713 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] [2021-05-21 20:27:38,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-05-21 20:27:38,713 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:38,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:38,714 INFO L82 PathProgramCache]: Analyzing trace with hash 266143165, now seen corresponding path program 86 times [2021-05-21 20:27:38,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:38,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149394716] [2021-05-21 20:27:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:38,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:38,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149394716] [2021-05-21 20:27:38,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149394716] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:38,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:38,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:38,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492440582] [2021-05-21 20:27:38,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:38,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:38,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:38,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:38,856 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) [2021-05-21 20:27:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:39,058 INFO L93 Difference]: Finished difference Result 32425 states and 162490 transitions. [2021-05-21 20:27:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:39,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:39,156 INFO L225 Difference]: With dead ends: 32425 [2021-05-21 20:27:39,156 INFO L226 Difference]: Without dead ends: 31343 [2021-05-21 20:27:39,156 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:40,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31343 states. [2021-05-21 20:27:40,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31343 to 13369. [2021-05-21 20:27:40,310 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) [2021-05-21 20:27:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 71113 transitions. [2021-05-21 20:27:40,352 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 71113 transitions. Word has length 33 [2021-05-21 20:27:40,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:40,352 INFO L482 AbstractCegarLoop]: Abstraction has 13369 states and 71113 transitions. [2021-05-21 20:27:40,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 71113 transitions. [2021-05-21 20:27:40,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:40,379 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:40,379 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:40,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-21 20:27:40,379 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:40,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:40,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1294488957, now seen corresponding path program 87 times [2021-05-21 20:27:40,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:40,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657251888] [2021-05-21 20:27:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:40,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:40,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657251888] [2021-05-21 20:27:40,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657251888] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:40,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:40,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:40,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350086044] [2021-05-21 20:27:40,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:40,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:40,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:40,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:40,513 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) [2021-05-21 20:27:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:40,735 INFO L93 Difference]: Finished difference Result 32097 states and 161027 transitions. [2021-05-21 20:27:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:40,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:40,834 INFO L225 Difference]: With dead ends: 32097 [2021-05-21 20:27:40,834 INFO L226 Difference]: Without dead ends: 31338 [2021-05-21 20:27:40,834 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 155.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:41,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31338 states. [2021-05-21 20:27:41,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31338 to 13493. [2021-05-21 20:27:41,983 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) [2021-05-21 20:27:42,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13493 states to 13493 states and 71617 transitions. [2021-05-21 20:27:42,025 INFO L78 Accepts]: Start accepts. Automaton has 13493 states and 71617 transitions. Word has length 33 [2021-05-21 20:27:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:42,025 INFO L482 AbstractCegarLoop]: Abstraction has 13493 states and 71617 transitions. [2021-05-21 20:27:42,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 13493 states and 71617 transitions. [2021-05-21 20:27:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:42,052 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:42,053 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:42,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-05-21 20:27:42,053 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:42,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1307258429, now seen corresponding path program 88 times [2021-05-21 20:27:42,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:42,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171519989] [2021-05-21 20:27:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:42,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:42,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171519989] [2021-05-21 20:27:42,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171519989] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:42,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:42,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:42,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524441256] [2021-05-21 20:27:42,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:42,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:42,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:42,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:42,181 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) [2021-05-21 20:27:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:42,409 INFO L93 Difference]: Finished difference Result 32103 states and 160920 transitions. [2021-05-21 20:27:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:42,409 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:42,694 INFO L225 Difference]: With dead ends: 32103 [2021-05-21 20:27:42,694 INFO L226 Difference]: Without dead ends: 31214 [2021-05-21 20:27:42,695 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31214 states. [2021-05-21 20:27:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31214 to 13369. [2021-05-21 20:27:43,692 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) [2021-05-21 20:27:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 71051 transitions. [2021-05-21 20:27:43,735 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 71051 transitions. Word has length 33 [2021-05-21 20:27:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:43,735 INFO L482 AbstractCegarLoop]: Abstraction has 13369 states and 71051 transitions. [2021-05-21 20:27:43,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 71051 transitions. [2021-05-21 20:27:43,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:43,763 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:43,763 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:43,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-21 20:27:43,763 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:43,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:43,764 INFO L82 PathProgramCache]: Analyzing trace with hash -399300773, now seen corresponding path program 89 times [2021-05-21 20:27:43,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:43,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187756439] [2021-05-21 20:27:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:43,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:43,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187756439] [2021-05-21 20:27:43,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187756439] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:43,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:43,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:43,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008876521] [2021-05-21 20:27:43,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:43,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:43,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:43,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:43,896 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) [2021-05-21 20:27:44,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:44,243 INFO L93 Difference]: Finished difference Result 32498 states and 162741 transitions. [2021-05-21 20:27:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:44,244 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 [2021-05-21 20:27:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:44,348 INFO L225 Difference]: With dead ends: 32498 [2021-05-21 20:27:44,348 INFO L226 Difference]: Without dead ends: 31604 [2021-05-21 20:27:44,348 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 135.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31604 states. [2021-05-21 20:27:45,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31604 to 13624. [2021-05-21 20:27:45,382 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) [2021-05-21 20:27:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 72074 transitions. [2021-05-21 20:27:45,606 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 72074 transitions. Word has length 33 [2021-05-21 20:27:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:45,606 INFO L482 AbstractCegarLoop]: Abstraction has 13624 states and 72074 transitions. [2021-05-21 20:27:45,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 72074 transitions. [2021-05-21 20:27:45,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:45,636 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:45,637 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:45,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-05-21 20:27:45,637 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:45,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:45,637 INFO L82 PathProgramCache]: Analyzing trace with hash -880202819, now seen corresponding path program 90 times [2021-05-21 20:27:45,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:45,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912611929] [2021-05-21 20:27:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:45,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:45,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912611929] [2021-05-21 20:27:45,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912611929] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:45,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:45,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:45,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508798541] [2021-05-21 20:27:45,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:45,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:45,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:45,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:45,765 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) [2021-05-21 20:27:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:45,996 INFO L93 Difference]: Finished difference Result 32369 states and 161972 transitions. [2021-05-21 20:27:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:45,996 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:46,094 INFO L225 Difference]: With dead ends: 32369 [2021-05-21 20:27:46,095 INFO L226 Difference]: Without dead ends: 31223 [2021-05-21 20:27:46,095 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:46,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31223 states. [2021-05-21 20:27:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31223 to 13243. [2021-05-21 20:27:47,258 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) [2021-05-21 20:27:47,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70482 transitions. [2021-05-21 20:27:47,299 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70482 transitions. Word has length 33 [2021-05-21 20:27:47,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:47,299 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70482 transitions. [2021-05-21 20:27:47,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:47,299 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70482 transitions. [2021-05-21 20:27:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:47,327 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:47,327 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:47,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-05-21 20:27:47,327 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:47,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:47,327 INFO L82 PathProgramCache]: Analyzing trace with hash -343642277, now seen corresponding path program 91 times [2021-05-21 20:27:47,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:47,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694791815] [2021-05-21 20:27:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:47,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:47,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694791815] [2021-05-21 20:27:47,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694791815] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:47,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:47,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:47,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47241561] [2021-05-21 20:27:47,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:47,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:47,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:47,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:47,478 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) [2021-05-21 20:27:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:47,713 INFO L93 Difference]: Finished difference Result 32176 states and 161498 transitions. [2021-05-21 20:27:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:47,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:47,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:47,812 INFO L225 Difference]: With dead ends: 32176 [2021-05-21 20:27:47,812 INFO L226 Difference]: Without dead ends: 31441 [2021-05-21 20:27:47,812 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 [2021-05-21 20:27:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31441 states. [2021-05-21 20:27:48,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31441 to 13539. [2021-05-21 20:27:48,957 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) [2021-05-21 20:27:48,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 71902 transitions. [2021-05-21 20:27:48,998 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 71902 transitions. Word has length 33 [2021-05-21 20:27:48,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:48,999 INFO L482 AbstractCegarLoop]: Abstraction has 13539 states and 71902 transitions. [2021-05-21 20:27:48,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:48,999 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 71902 transitions. [2021-05-21 20:27:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:49,026 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:49,026 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] [2021-05-21 20:27:49,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-05-21 20:27:49,026 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:49,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:49,027 INFO L82 PathProgramCache]: Analyzing trace with hash -268107971, now seen corresponding path program 92 times [2021-05-21 20:27:49,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:49,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396777214] [2021-05-21 20:27:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:49,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:49,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396777214] [2021-05-21 20:27:49,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396777214] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:49,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:49,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:49,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483028339] [2021-05-21 20:27:49,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:49,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:49,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:49,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:49,176 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) [2021-05-21 20:27:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:49,405 INFO L93 Difference]: Finished difference Result 32335 states and 162073 transitions. [2021-05-21 20:27:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:49,406 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:49,504 INFO L225 Difference]: With dead ends: 32335 [2021-05-21 20:27:49,504 INFO L226 Difference]: Without dead ends: 31265 [2021-05-21 20:27:49,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:50,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31265 states. [2021-05-21 20:27:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31265 to 13363. [2021-05-21 20:27:50,654 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) [2021-05-21 20:27:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71030 transitions. [2021-05-21 20:27:50,696 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71030 transitions. Word has length 33 [2021-05-21 20:27:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:50,696 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71030 transitions. [2021-05-21 20:27:50,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:50,696 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71030 transitions. [2021-05-21 20:27:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:50,724 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:50,724 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:50,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-05-21 20:27:50,724 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:50,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:50,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1365959485, now seen corresponding path program 93 times [2021-05-21 20:27:50,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:50,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578305184] [2021-05-21 20:27:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:50,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:50,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578305184] [2021-05-21 20:27:50,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578305184] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:50,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:50,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:50,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550763734] [2021-05-21 20:27:50,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:50,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:50,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:50,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:50,872 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) [2021-05-21 20:27:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:51,090 INFO L93 Difference]: Finished difference Result 31983 states and 160512 transitions. [2021-05-21 20:27:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:51,090 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:51,189 INFO L225 Difference]: With dead ends: 31983 [2021-05-21 20:27:51,189 INFO L226 Difference]: Without dead ends: 31248 [2021-05-21 20:27:51,190 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 [2021-05-21 20:27:52,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31248 states. [2021-05-21 20:27:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31248 to 13475. [2021-05-21 20:27:52,364 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) [2021-05-21 20:27:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13475 states to 13475 states and 71494 transitions. [2021-05-21 20:27:52,407 INFO L78 Accepts]: Start accepts. Automaton has 13475 states and 71494 transitions. Word has length 33 [2021-05-21 20:27:52,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:52,407 INFO L482 AbstractCegarLoop]: Abstraction has 13475 states and 71494 transitions. [2021-05-21 20:27:52,407 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) [2021-05-21 20:27:52,407 INFO L276 IsEmpty]: Start isEmpty. Operand 13475 states and 71494 transitions. [2021-05-21 20:27:52,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:52,434 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:52,435 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:52,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-05-21 20:27:52,435 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:52,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:52,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1279600963, now seen corresponding path program 94 times [2021-05-21 20:27:52,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:52,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289983337] [2021-05-21 20:27:52,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:52,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:52,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289983337] [2021-05-21 20:27:52,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289983337] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:52,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:52,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:52,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843923396] [2021-05-21 20:27:52,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:52,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:52,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:52,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:52,594 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) [2021-05-21 20:27:52,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:52,954 INFO L93 Difference]: Finished difference Result 32013 states and 160509 transitions. [2021-05-21 20:27:52,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:52,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:53,060 INFO L225 Difference]: With dead ends: 32013 [2021-05-21 20:27:53,061 INFO L226 Difference]: Without dead ends: 31136 [2021-05-21 20:27:53,061 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 [2021-05-21 20:27:53,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31136 states. [2021-05-21 20:27:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31136 to 13363. [2021-05-21 20:27:54,108 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) [2021-05-21 20:27:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 70974 transitions. [2021-05-21 20:27:54,151 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 70974 transitions. Word has length 33 [2021-05-21 20:27:54,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:54,151 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 70974 transitions. [2021-05-21 20:27:54,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 70974 transitions. [2021-05-21 20:27:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:54,179 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:54,179 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:54,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-05-21 20:27:54,180 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:54,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:54,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1002568161, now seen corresponding path program 95 times [2021-05-21 20:27:54,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:54,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904632354] [2021-05-21 20:27:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:54,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:54,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904632354] [2021-05-21 20:27:54,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904632354] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:54,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:54,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:54,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275081842] [2021-05-21 20:27:54,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:54,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:54,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:54,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:54,437 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) [2021-05-21 20:27:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:54,647 INFO L93 Difference]: Finished difference Result 32444 states and 162468 transitions. [2021-05-21 20:27:54,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:54,647 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 [2021-05-21 20:27:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:54,752 INFO L225 Difference]: With dead ends: 32444 [2021-05-21 20:27:54,752 INFO L226 Difference]: Without dead ends: 31550 [2021-05-21 20:27:54,753 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 254.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:55,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31550 states. [2021-05-21 20:27:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31550 to 13618. [2021-05-21 20:27:55,948 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) [2021-05-21 20:27:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13618 states to 13618 states and 71997 transitions. [2021-05-21 20:27:55,991 INFO L78 Accepts]: Start accepts. Automaton has 13618 states and 71997 transitions. Word has length 33 [2021-05-21 20:27:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:55,992 INFO L482 AbstractCegarLoop]: Abstraction has 13618 states and 71997 transitions. [2021-05-21 20:27:55,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 13618 states and 71997 transitions. [2021-05-21 20:27:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:56,019 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:56,020 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:56,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-05-21 20:27:56,020 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:56,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:56,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1269337597, now seen corresponding path program 96 times [2021-05-21 20:27:56,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:56,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978240014] [2021-05-21 20:27:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:56,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:56,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978240014] [2021-05-21 20:27:56,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978240014] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:56,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:56,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:56,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600101204] [2021-05-21 20:27:56,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:56,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:56,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:56,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:56,172 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) [2021-05-21 20:27:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:56,420 INFO L93 Difference]: Finished difference Result 32315 states and 161699 transitions. [2021-05-21 20:27:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:56,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:56,522 INFO L225 Difference]: With dead ends: 32315 [2021-05-21 20:27:56,522 INFO L226 Difference]: Without dead ends: 31115 [2021-05-21 20:27:56,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:57,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31115 states. [2021-05-21 20:27:57,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31115 to 13183. [2021-05-21 20:27:57,682 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) [2021-05-21 20:27:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13183 states to 13183 states and 70236 transitions. [2021-05-21 20:27:57,723 INFO L78 Accepts]: Start accepts. Automaton has 13183 states and 70236 transitions. Word has length 33 [2021-05-21 20:27:57,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:57,724 INFO L482 AbstractCegarLoop]: Abstraction has 13183 states and 70236 transitions. [2021-05-21 20:27:57,724 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) [2021-05-21 20:27:57,724 INFO L276 IsEmpty]: Start isEmpty. Operand 13183 states and 70236 transitions. [2021-05-21 20:27:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:57,750 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:57,750 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:27:57,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-21 20:27:57,751 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:57,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1050695737, now seen corresponding path program 97 times [2021-05-21 20:27:57,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:57,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905487912] [2021-05-21 20:27:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:57,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:57,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905487912] [2021-05-21 20:27:57,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905487912] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:57,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:57,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:57,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577311908] [2021-05-21 20:27:57,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:57,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:57,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:57,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:57,912 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) [2021-05-21 20:27:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:58,135 INFO L93 Difference]: Finished difference Result 31850 states and 160181 transitions. [2021-05-21 20:27:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:58,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:27:58,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:58,235 INFO L225 Difference]: With dead ends: 31850 [2021-05-21 20:27:58,235 INFO L226 Difference]: Without dead ends: 31099 [2021-05-21 20:27:58,235 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:27:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31099 states. [2021-05-21 20:27:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31099 to 13443. [2021-05-21 20:27:59,390 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) [2021-05-21 20:27:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13443 states to 13443 states and 71540 transitions. [2021-05-21 20:27:59,434 INFO L78 Accepts]: Start accepts. Automaton has 13443 states and 71540 transitions. Word has length 33 [2021-05-21 20:27:59,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:27:59,434 INFO L482 AbstractCegarLoop]: Abstraction has 13443 states and 71540 transitions. [2021-05-21 20:27:59,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:27:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 13443 states and 71540 transitions. [2021-05-21 20:27:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:27:59,462 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:27:59,462 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] [2021-05-21 20:27:59,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-05-21 20:27:59,463 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:27:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:27:59,463 INFO L82 PathProgramCache]: Analyzing trace with hash 569793691, now seen corresponding path program 98 times [2021-05-21 20:27:59,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:27:59,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882164580] [2021-05-21 20:27:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:27:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:27:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:27:59,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:27:59,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882164580] [2021-05-21 20:27:59,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882164580] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:27:59,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:27:59,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:27:59,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689292723] [2021-05-21 20:27:59,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:27:59,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:27:59,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:27:59,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:27:59,614 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) [2021-05-21 20:27:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:27:59,850 INFO L93 Difference]: Finished difference Result 31834 states and 160005 transitions. [2021-05-21 20:27:59,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:27:59,850 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 [2021-05-21 20:27:59,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:27:59,947 INFO L225 Difference]: With dead ends: 31834 [2021-05-21 20:27:59,948 INFO L226 Difference]: Without dead ends: 30987 [2021-05-21 20:27:59,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30987 states. [2021-05-21 20:28:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30987 to 13331. [2021-05-21 20:28:01,079 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) [2021-05-21 20:28:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13331 states to 13331 states and 71020 transitions. [2021-05-21 20:28:01,120 INFO L78 Accepts]: Start accepts. Automaton has 13331 states and 71020 transitions. Word has length 33 [2021-05-21 20:28:01,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:01,120 INFO L482 AbstractCegarLoop]: Abstraction has 13331 states and 71020 transitions. [2021-05-21 20:28:01,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:01,120 INFO L276 IsEmpty]: Start isEmpty. Operand 13331 states and 71020 transitions. [2021-05-21 20:28:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:01,147 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:01,147 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:01,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-05-21 20:28:01,147 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:01,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:01,147 INFO L82 PathProgramCache]: Analyzing trace with hash 624719771, now seen corresponding path program 99 times [2021-05-21 20:28:01,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:01,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004828306] [2021-05-21 20:28:01,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:01,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:01,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:01,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004828306] [2021-05-21 20:28:01,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004828306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:01,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:01,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:01,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161062139] [2021-05-21 20:28:01,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:01,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:01,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:01,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:01,311 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) [2021-05-21 20:28:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:01,709 INFO L93 Difference]: Finished difference Result 32081 states and 161168 transitions. [2021-05-21 20:28:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:01,709 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 [2021-05-21 20:28:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:01,812 INFO L225 Difference]: With dead ends: 32081 [2021-05-21 20:28:01,812 INFO L226 Difference]: Without dead ends: 31330 [2021-05-21 20:28:01,812 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 [2021-05-21 20:28:02,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31330 states. [2021-05-21 20:28:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31330 to 13515. [2021-05-21 20:28:02,835 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) [2021-05-21 20:28:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13515 states to 13515 states and 71832 transitions. [2021-05-21 20:28:02,877 INFO L78 Accepts]: Start accepts. Automaton has 13515 states and 71832 transitions. Word has length 33 [2021-05-21 20:28:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:02,877 INFO L482 AbstractCegarLoop]: Abstraction has 13515 states and 71832 transitions. [2021-05-21 20:28:02,877 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) [2021-05-21 20:28:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 13515 states and 71832 transitions. [2021-05-21 20:28:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:02,904 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:02,904 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:02,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-05-21 20:28:02,905 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:02,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:02,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1951182949, now seen corresponding path program 100 times [2021-05-21 20:28:02,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:02,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990847623] [2021-05-21 20:28:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:03,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:03,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990847623] [2021-05-21 20:28:03,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990847623] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:03,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:03,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:03,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079797740] [2021-05-21 20:28:03,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:03,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:03,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:03,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:03,074 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) [2021-05-21 20:28:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:03,422 INFO L93 Difference]: Finished difference Result 32224 states and 161671 transitions. [2021-05-21 20:28:03,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:03,423 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 [2021-05-21 20:28:03,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:03,525 INFO L225 Difference]: With dead ends: 32224 [2021-05-21 20:28:03,525 INFO L226 Difference]: Without dead ends: 31146 [2021-05-21 20:28:03,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 175.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31146 states. [2021-05-21 20:28:04,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31146 to 13331. [2021-05-21 20:28:04,557 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) [2021-05-21 20:28:04,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13331 states to 13331 states and 70932 transitions. [2021-05-21 20:28:04,790 INFO L78 Accepts]: Start accepts. Automaton has 13331 states and 70932 transitions. Word has length 33 [2021-05-21 20:28:04,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:04,790 INFO L482 AbstractCegarLoop]: Abstraction has 13331 states and 70932 transitions. [2021-05-21 20:28:04,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 13331 states and 70932 transitions. [2021-05-21 20:28:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:04,818 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:04,818 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:04,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-05-21 20:28:04,819 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:04,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:04,819 INFO L82 PathProgramCache]: Analyzing trace with hash -164666499, now seen corresponding path program 101 times [2021-05-21 20:28:04,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:04,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079821834] [2021-05-21 20:28:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:04,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:04,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079821834] [2021-05-21 20:28:04,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079821834] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:04,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:04,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:04,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083716805] [2021-05-21 20:28:04,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:04,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:04,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:04,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:04,981 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) [2021-05-21 20:28:05,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:05,225 INFO L93 Difference]: Finished difference Result 32041 states and 160916 transitions. [2021-05-21 20:28:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:05,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:05,325 INFO L225 Difference]: With dead ends: 32041 [2021-05-21 20:28:05,326 INFO L226 Difference]: Without dead ends: 31306 [2021-05-21 20:28:05,326 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 [2021-05-21 20:28:06,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31306 states. [2021-05-21 20:28:06,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31306 to 13507. [2021-05-21 20:28:06,495 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) [2021-05-21 20:28:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 71716 transitions. [2021-05-21 20:28:06,537 INFO L78 Accepts]: Start accepts. Automaton has 13507 states and 71716 transitions. Word has length 33 [2021-05-21 20:28:06,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:06,537 INFO L482 AbstractCegarLoop]: Abstraction has 13507 states and 71716 transitions. [2021-05-21 20:28:06,537 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) [2021-05-21 20:28:06,537 INFO L276 IsEmpty]: Start isEmpty. Operand 13507 states and 71716 transitions. [2021-05-21 20:28:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:06,565 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:06,565 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:06,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-05-21 20:28:06,565 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:06,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:06,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2118070309, now seen corresponding path program 102 times [2021-05-21 20:28:06,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:06,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671586761] [2021-05-21 20:28:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:06,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:06,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671586761] [2021-05-21 20:28:06,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671586761] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:06,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:06,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:06,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419445239] [2021-05-21 20:28:06,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:06,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:06,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:06,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:06,751 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) [2021-05-21 20:28:06,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:06,948 INFO L93 Difference]: Finished difference Result 32200 states and 161491 transitions. [2021-05-21 20:28:06,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:06,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:06,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:07,049 INFO L225 Difference]: With dead ends: 32200 [2021-05-21 20:28:07,049 INFO L226 Difference]: Without dead ends: 31042 [2021-05-21 20:28:07,049 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 171.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:07,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31042 states. [2021-05-21 20:28:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31042 to 13243. [2021-05-21 20:28:08,195 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) [2021-05-21 20:28:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70540 transitions. [2021-05-21 20:28:08,237 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70540 transitions. Word has length 33 [2021-05-21 20:28:08,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:08,237 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70540 transitions. [2021-05-21 20:28:08,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:08,237 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70540 transitions. [2021-05-21 20:28:08,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:08,264 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:08,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:08,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-05-21 20:28:08,265 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:08,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:08,265 INFO L82 PathProgramCache]: Analyzing trace with hash -994485349, now seen corresponding path program 103 times [2021-05-21 20:28:08,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:08,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855630365] [2021-05-21 20:28:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:08,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:08,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855630365] [2021-05-21 20:28:08,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855630365] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:08,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:08,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:08,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634683525] [2021-05-21 20:28:08,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:08,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:08,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:08,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:08,413 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) [2021-05-21 20:28:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:08,649 INFO L93 Difference]: Finished difference Result 31561 states and 158743 transitions. [2021-05-21 20:28:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:08,649 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:08,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:08,750 INFO L225 Difference]: With dead ends: 31561 [2021-05-21 20:28:08,751 INFO L226 Difference]: Without dead ends: 30810 [2021-05-21 20:28:08,751 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 [2021-05-21 20:28:09,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30810 states. [2021-05-21 20:28:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30810 to 13411. [2021-05-21 20:28:09,877 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) [2021-05-21 20:28:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13411 states to 13411 states and 71320 transitions. [2021-05-21 20:28:09,919 INFO L78 Accepts]: Start accepts. Automaton has 13411 states and 71320 transitions. Word has length 33 [2021-05-21 20:28:09,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:09,919 INFO L482 AbstractCegarLoop]: Abstraction has 13411 states and 71320 transitions. [2021-05-21 20:28:09,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:09,919 INFO L276 IsEmpty]: Start isEmpty. Operand 13411 states and 71320 transitions. [2021-05-21 20:28:09,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:09,945 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:09,946 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:09,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-05-21 20:28:09,946 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:09,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:09,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1475387395, now seen corresponding path program 104 times [2021-05-21 20:28:09,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:09,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155034658] [2021-05-21 20:28:09,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:10,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:10,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155034658] [2021-05-21 20:28:10,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155034658] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:10,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:10,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:10,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932170938] [2021-05-21 20:28:10,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:10,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:10,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:10,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:10,093 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) [2021-05-21 20:28:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:10,311 INFO L93 Difference]: Finished difference Result 31545 states and 158567 transitions. [2021-05-21 20:28:10,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:10,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:10,407 INFO L225 Difference]: With dead ends: 31545 [2021-05-21 20:28:10,407 INFO L226 Difference]: Without dead ends: 30698 [2021-05-21 20:28:10,407 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 [2021-05-21 20:28:11,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30698 states. [2021-05-21 20:28:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30698 to 13299. [2021-05-21 20:28:11,558 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) [2021-05-21 20:28:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13299 states to 13299 states and 70800 transitions. [2021-05-21 20:28:11,600 INFO L78 Accepts]: Start accepts. Automaton has 13299 states and 70800 transitions. Word has length 33 [2021-05-21 20:28:11,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:11,600 INFO L482 AbstractCegarLoop]: Abstraction has 13299 states and 70800 transitions. [2021-05-21 20:28:11,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 13299 states and 70800 transitions. [2021-05-21 20:28:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:11,628 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:11,628 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:11,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-05-21 20:28:11,628 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:11,628 INFO L82 PathProgramCache]: Analyzing trace with hash -757436645, now seen corresponding path program 105 times [2021-05-21 20:28:11,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:11,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078393932] [2021-05-21 20:28:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:11,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:11,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078393932] [2021-05-21 20:28:11,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078393932] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:11,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:11,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:11,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493223274] [2021-05-21 20:28:11,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:11,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:11,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:11,789 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) [2021-05-21 20:28:12,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:12,121 INFO L93 Difference]: Finished difference Result 31599 states and 158832 transitions. [2021-05-21 20:28:12,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:12,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:12,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:12,220 INFO L225 Difference]: With dead ends: 31599 [2021-05-21 20:28:12,220 INFO L226 Difference]: Without dead ends: 30848 [2021-05-21 20:28:12,220 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 182.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:12,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30848 states. [2021-05-21 20:28:13,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30848 to 13419. [2021-05-21 20:28:13,257 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) [2021-05-21 20:28:13,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71292 transitions. [2021-05-21 20:28:13,300 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71292 transitions. Word has length 33 [2021-05-21 20:28:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:13,300 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71292 transitions. [2021-05-21 20:28:13,300 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) [2021-05-21 20:28:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71292 transitions. [2021-05-21 20:28:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:13,327 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:13,327 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:13,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-05-21 20:28:13,327 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:13,328 INFO L82 PathProgramCache]: Analyzing trace with hash 258619163, now seen corresponding path program 106 times [2021-05-21 20:28:13,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:13,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829136542] [2021-05-21 20:28:13,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:13,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:13,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829136542] [2021-05-21 20:28:13,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829136542] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:13,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:13,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:13,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909652635] [2021-05-21 20:28:13,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:13,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:13,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:13,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:13,597 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) [2021-05-21 20:28:13,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:13,830 INFO L93 Difference]: Finished difference Result 31613 states and 158757 transitions. [2021-05-21 20:28:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:13,830 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 [2021-05-21 20:28:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:13,929 INFO L225 Difference]: With dead ends: 31613 [2021-05-21 20:28:13,929 INFO L226 Difference]: Without dead ends: 30728 [2021-05-21 20:28:13,929 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 [2021-05-21 20:28:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30728 states. [2021-05-21 20:28:15,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30728 to 13299. [2021-05-21 20:28:15,082 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) [2021-05-21 20:28:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13299 states to 13299 states and 70744 transitions. [2021-05-21 20:28:15,124 INFO L78 Accepts]: Start accepts. Automaton has 13299 states and 70744 transitions. Word has length 33 [2021-05-21 20:28:15,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:15,124 INFO L482 AbstractCegarLoop]: Abstraction has 13299 states and 70744 transitions. [2021-05-21 20:28:15,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:15,124 INFO L276 IsEmpty]: Start isEmpty. Operand 13299 states and 70744 transitions. [2021-05-21 20:28:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:15,151 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:15,151 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:15,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-05-21 20:28:15,152 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:15,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1546822915, now seen corresponding path program 107 times [2021-05-21 20:28:15,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:15,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738258557] [2021-05-21 20:28:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:15,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:15,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738258557] [2021-05-21 20:28:15,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738258557] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:15,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:15,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:15,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267869471] [2021-05-21 20:28:15,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:15,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:15,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:15,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:15,309 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) [2021-05-21 20:28:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:15,525 INFO L93 Difference]: Finished difference Result 31559 states and 158612 transitions. [2021-05-21 20:28:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:15,623 INFO L225 Difference]: With dead ends: 31559 [2021-05-21 20:28:15,623 INFO L226 Difference]: Without dead ends: 30824 [2021-05-21 20:28:15,623 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 [2021-05-21 20:28:16,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30824 states. [2021-05-21 20:28:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30824 to 13411. [2021-05-21 20:28:16,750 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) [2021-05-21 20:28:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13411 states to 13411 states and 71208 transitions. [2021-05-21 20:28:16,793 INFO L78 Accepts]: Start accepts. Automaton has 13411 states and 71208 transitions. Word has length 33 [2021-05-21 20:28:16,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:16,793 INFO L482 AbstractCegarLoop]: Abstraction has 13411 states and 71208 transitions. [2021-05-21 20:28:16,793 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) [2021-05-21 20:28:16,793 INFO L276 IsEmpty]: Start isEmpty. Operand 13411 states and 71208 transitions. [2021-05-21 20:28:16,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:16,820 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:16,820 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] [2021-05-21 20:28:16,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-05-21 20:28:16,821 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:16,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:16,821 INFO L82 PathProgramCache]: Analyzing trace with hash 784789467, now seen corresponding path program 108 times [2021-05-21 20:28:16,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:16,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083823315] [2021-05-21 20:28:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:16,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:16,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083823315] [2021-05-21 20:28:16,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083823315] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:16,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:16,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:16,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693835076] [2021-05-21 20:28:16,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:16,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:16,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:16,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:16,975 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) [2021-05-21 20:28:17,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:17,214 INFO L93 Difference]: Finished difference Result 31589 states and 158609 transitions. [2021-05-21 20:28:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:17,215 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 [2021-05-21 20:28:17,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:17,311 INFO L225 Difference]: With dead ends: 31589 [2021-05-21 20:28:17,312 INFO L226 Difference]: Without dead ends: 30656 [2021-05-21 20:28:17,312 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:18,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30656 states. [2021-05-21 20:28:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30656 to 13243. [2021-05-21 20:28:18,454 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) [2021-05-21 20:28:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70512 transitions. [2021-05-21 20:28:18,496 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70512 transitions. Word has length 33 [2021-05-21 20:28:18,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:18,496 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70512 transitions. [2021-05-21 20:28:18,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70512 transitions. [2021-05-21 20:28:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:18,523 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:18,523 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:18,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-05-21 20:28:18,523 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:18,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:18,523 INFO L82 PathProgramCache]: Analyzing trace with hash -816886275, now seen corresponding path program 109 times [2021-05-21 20:28:18,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:18,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115402937] [2021-05-21 20:28:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:18,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:18,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115402937] [2021-05-21 20:28:18,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115402937] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:18,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:18,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:18,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080706686] [2021-05-21 20:28:18,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:18,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:18,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:18,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:18,712 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) [2021-05-21 20:28:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:18,942 INFO L93 Difference]: Finished difference Result 32234 states and 161779 transitions. [2021-05-21 20:28:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:18,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:19,044 INFO L225 Difference]: With dead ends: 32234 [2021-05-21 20:28:19,045 INFO L226 Difference]: Without dead ends: 31483 [2021-05-21 20:28:19,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 193.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:19,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31483 states. [2021-05-21 20:28:20,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31483 to 13551. [2021-05-21 20:28:20,196 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) [2021-05-21 20:28:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13551 states to 13551 states and 71980 transitions. [2021-05-21 20:28:20,238 INFO L78 Accepts]: Start accepts. Automaton has 13551 states and 71980 transitions. Word has length 33 [2021-05-21 20:28:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:20,238 INFO L482 AbstractCegarLoop]: Abstraction has 13551 states and 71980 transitions. [2021-05-21 20:28:20,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 13551 states and 71980 transitions. [2021-05-21 20:28:20,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:20,266 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:20,266 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:20,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-05-21 20:28:20,266 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:20,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:20,266 INFO L82 PathProgramCache]: Analyzing trace with hash 902178301, now seen corresponding path program 110 times [2021-05-21 20:28:20,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:20,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586316971] [2021-05-21 20:28:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:20,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:20,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586316971] [2021-05-21 20:28:20,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586316971] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:20,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:20,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:20,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074791284] [2021-05-21 20:28:20,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:20,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:20,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:20,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:20,443 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) [2021-05-21 20:28:20,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:20,814 INFO L93 Difference]: Finished difference Result 32377 states and 162282 transitions. [2021-05-21 20:28:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:20,814 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 [2021-05-21 20:28:20,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:20,927 INFO L225 Difference]: With dead ends: 32377 [2021-05-21 20:28:20,928 INFO L226 Difference]: Without dead ends: 31299 [2021-05-21 20:28:20,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:21,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31299 states. [2021-05-21 20:28:21,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31299 to 13367. [2021-05-21 20:28:21,955 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) [2021-05-21 20:28:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13367 states to 13367 states and 71076 transitions. [2021-05-21 20:28:21,996 INFO L78 Accepts]: Start accepts. Automaton has 13367 states and 71076 transitions. Word has length 33 [2021-05-21 20:28:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:21,996 INFO L482 AbstractCegarLoop]: Abstraction has 13367 states and 71076 transitions. [2021-05-21 20:28:21,996 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) [2021-05-21 20:28:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 13367 states and 71076 transitions. [2021-05-21 20:28:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:22,024 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:22,024 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:22,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-05-21 20:28:22,024 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:22,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:22,024 INFO L82 PathProgramCache]: Analyzing trace with hash 641160795, now seen corresponding path program 111 times [2021-05-21 20:28:22,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:22,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781661630] [2021-05-21 20:28:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:22,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:22,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:22,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781661630] [2021-05-21 20:28:22,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781661630] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:22,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:22,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:22,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408148541] [2021-05-21 20:28:22,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:22,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:22,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:22,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:22,198 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) [2021-05-21 20:28:22,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:22,537 INFO L93 Difference]: Finished difference Result 32041 states and 160789 transitions. [2021-05-21 20:28:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:22,537 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:22,638 INFO L225 Difference]: With dead ends: 32041 [2021-05-21 20:28:22,638 INFO L226 Difference]: Without dead ends: 31290 [2021-05-21 20:28:22,638 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 [2021-05-21 20:28:23,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31290 states. [2021-05-21 20:28:23,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31290 to 13487. [2021-05-21 20:28:23,682 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) [2021-05-21 20:28:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13487 states to 13487 states and 71568 transitions. [2021-05-21 20:28:23,904 INFO L78 Accepts]: Start accepts. Automaton has 13487 states and 71568 transitions. Word has length 33 [2021-05-21 20:28:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:23,904 INFO L482 AbstractCegarLoop]: Abstraction has 13487 states and 71568 transitions. [2021-05-21 20:28:23,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:23,904 INFO L276 IsEmpty]: Start isEmpty. Operand 13487 states and 71568 transitions. [2021-05-21 20:28:23,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:23,934 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:23,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:23,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-05-21 20:28:23,934 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:23,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1082391043, now seen corresponding path program 112 times [2021-05-21 20:28:23,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:23,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153174586] [2021-05-21 20:28:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:24,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:24,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153174586] [2021-05-21 20:28:24,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153174586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:24,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:24,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:24,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276974573] [2021-05-21 20:28:24,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:24,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:24,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:24,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:24,095 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) [2021-05-21 20:28:24,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:24,319 INFO L93 Difference]: Finished difference Result 32055 states and 160714 transitions. [2021-05-21 20:28:24,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:24,320 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:24,421 INFO L225 Difference]: With dead ends: 32055 [2021-05-21 20:28:24,421 INFO L226 Difference]: Without dead ends: 31170 [2021-05-21 20:28:24,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 182.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:25,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31170 states. [2021-05-21 20:28:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31170 to 13367. [2021-05-21 20:28:25,611 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) [2021-05-21 20:28:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13367 states to 13367 states and 71016 transitions. [2021-05-21 20:28:25,654 INFO L78 Accepts]: Start accepts. Automaton has 13367 states and 71016 transitions. Word has length 33 [2021-05-21 20:28:25,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:25,654 INFO L482 AbstractCegarLoop]: Abstraction has 13367 states and 71016 transitions. [2021-05-21 20:28:25,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 13367 states and 71016 transitions. [2021-05-21 20:28:25,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:25,681 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:25,681 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:25,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-05-21 20:28:25,682 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:25,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:25,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1920733699, now seen corresponding path program 113 times [2021-05-21 20:28:25,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:25,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713222030] [2021-05-21 20:28:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:25,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:25,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713222030] [2021-05-21 20:28:25,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713222030] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:25,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:25,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:25,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386869334] [2021-05-21 20:28:25,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:25,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:25,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:25,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:25,832 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) [2021-05-21 20:28:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:26,037 INFO L93 Difference]: Finished difference Result 32462 states and 162577 transitions. [2021-05-21 20:28:26,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:26,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:26,139 INFO L225 Difference]: With dead ends: 32462 [2021-05-21 20:28:26,140 INFO L226 Difference]: Without dead ends: 31568 [2021-05-21 20:28:26,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:27,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31568 states. [2021-05-21 20:28:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31568 to 13622. [2021-05-21 20:28:27,299 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) [2021-05-21 20:28:27,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13622 states to 13622 states and 72039 transitions. [2021-05-21 20:28:27,342 INFO L78 Accepts]: Start accepts. Automaton has 13622 states and 72039 transitions. Word has length 33 [2021-05-21 20:28:27,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:27,342 INFO L482 AbstractCegarLoop]: Abstraction has 13622 states and 72039 transitions. [2021-05-21 20:28:27,342 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) [2021-05-21 20:28:27,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13622 states and 72039 transitions. [2021-05-21 20:28:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:27,369 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:27,369 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:27,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-05-21 20:28:27,370 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:27,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:27,370 INFO L82 PathProgramCache]: Analyzing trace with hash 351172059, now seen corresponding path program 114 times [2021-05-21 20:28:27,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:27,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595579950] [2021-05-21 20:28:27,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:27,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:27,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595579950] [2021-05-21 20:28:27,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595579950] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:27,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:27,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:27,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630189454] [2021-05-21 20:28:27,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:27,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:27,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:27,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:27,522 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) [2021-05-21 20:28:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:27,755 INFO L93 Difference]: Finished difference Result 32333 states and 161808 transitions. [2021-05-21 20:28:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:27,755 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 [2021-05-21 20:28:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:27,855 INFO L225 Difference]: With dead ends: 32333 [2021-05-21 20:28:27,855 INFO L226 Difference]: Without dead ends: 31189 [2021-05-21 20:28:27,855 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 [2021-05-21 20:28:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31189 states. [2021-05-21 20:28:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31189 to 13243. [2021-05-21 20:28:29,001 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) [2021-05-21 20:28:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 70452 transitions. [2021-05-21 20:28:29,042 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 70452 transitions. Word has length 33 [2021-05-21 20:28:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:29,042 INFO L482 AbstractCegarLoop]: Abstraction has 13243 states and 70452 transitions. [2021-05-21 20:28:29,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 70452 transitions. [2021-05-21 20:28:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:29,069 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:29,069 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:29,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-05-21 20:28:29,070 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1706868385, now seen corresponding path program 115 times [2021-05-21 20:28:29,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:29,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492270770] [2021-05-21 20:28:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:29,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:29,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492270770] [2021-05-21 20:28:29,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492270770] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:29,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:29,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:29,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703212911] [2021-05-21 20:28:29,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:29,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:29,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:29,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:29,231 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) [2021-05-21 20:28:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:29,465 INFO L93 Difference]: Finished difference Result 32158 states and 161399 transitions. [2021-05-21 20:28:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:29,746 INFO L225 Difference]: With dead ends: 32158 [2021-05-21 20:28:29,746 INFO L226 Difference]: Without dead ends: 31423 [2021-05-21 20:28:29,746 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 [2021-05-21 20:28:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31423 states. [2021-05-21 20:28:30,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31423 to 13539. [2021-05-21 20:28:30,745 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) [2021-05-21 20:28:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 71872 transitions. [2021-05-21 20:28:30,787 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 71872 transitions. Word has length 33 [2021-05-21 20:28:30,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:30,787 INFO L482 AbstractCegarLoop]: Abstraction has 13539 states and 71872 transitions. [2021-05-21 20:28:30,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 71872 transitions. [2021-05-21 20:28:30,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:30,814 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:30,814 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:30,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-05-21 20:28:30,815 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:30,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:30,815 INFO L82 PathProgramCache]: Analyzing trace with hash 634695101, now seen corresponding path program 116 times [2021-05-21 20:28:30,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:30,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395239287] [2021-05-21 20:28:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:30,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:30,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395239287] [2021-05-21 20:28:30,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395239287] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:30,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:30,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:30,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797794151] [2021-05-21 20:28:30,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:30,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:30,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:30,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:30,982 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) [2021-05-21 20:28:31,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:31,366 INFO L93 Difference]: Finished difference Result 32317 states and 161974 transitions. [2021-05-21 20:28:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:31,367 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 [2021-05-21 20:28:31,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:31,467 INFO L225 Difference]: With dead ends: 32317 [2021-05-21 20:28:31,468 INFO L226 Difference]: Without dead ends: 31247 [2021-05-21 20:28:31,468 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31247 states. [2021-05-21 20:28:32,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31247 to 13363. [2021-05-21 20:28:32,502 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) [2021-05-21 20:28:32,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71000 transitions. [2021-05-21 20:28:32,543 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71000 transitions. Word has length 33 [2021-05-21 20:28:32,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:32,543 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71000 transitions. [2021-05-21 20:28:32,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71000 transitions. [2021-05-21 20:28:32,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:32,685 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:32,685 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] [2021-05-21 20:28:32,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-05-21 20:28:32,685 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:32,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:32,685 INFO L82 PathProgramCache]: Analyzing trace with hash -248821315, now seen corresponding path program 117 times [2021-05-21 20:28:32,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:32,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325310808] [2021-05-21 20:28:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:32,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:32,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325310808] [2021-05-21 20:28:32,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325310808] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:32,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:32,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:32,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015214102] [2021-05-21 20:28:32,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:32,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:32,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:32,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:32,849 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) [2021-05-21 20:28:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:33,082 INFO L93 Difference]: Finished difference Result 31965 states and 160413 transitions. [2021-05-21 20:28:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:33,180 INFO L225 Difference]: With dead ends: 31965 [2021-05-21 20:28:33,180 INFO L226 Difference]: Without dead ends: 31230 [2021-05-21 20:28:33,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:33,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31230 states. [2021-05-21 20:28:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31230 to 13475. [2021-05-21 20:28:34,335 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) [2021-05-21 20:28:34,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13475 states to 13475 states and 71464 transitions. [2021-05-21 20:28:34,379 INFO L78 Accepts]: Start accepts. Automaton has 13475 states and 71464 transitions. Word has length 33 [2021-05-21 20:28:34,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:34,379 INFO L482 AbstractCegarLoop]: Abstraction has 13475 states and 71464 transitions. [2021-05-21 20:28:34,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:34,379 INFO L276 IsEmpty]: Start isEmpty. Operand 13475 states and 71464 transitions. [2021-05-21 20:28:34,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:34,407 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:34,407 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:34,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-05-21 20:28:34,407 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:34,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:34,407 INFO L82 PathProgramCache]: Analyzing trace with hash -656816579, now seen corresponding path program 118 times [2021-05-21 20:28:34,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:34,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527732615] [2021-05-21 20:28:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:34,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:34,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527732615] [2021-05-21 20:28:34,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527732615] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:34,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:34,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:34,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114741623] [2021-05-21 20:28:34,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:34,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:34,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:34,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:34,584 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) [2021-05-21 20:28:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:34,826 INFO L93 Difference]: Finished difference Result 31995 states and 160410 transitions. [2021-05-21 20:28:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:34,926 INFO L225 Difference]: With dead ends: 31995 [2021-05-21 20:28:34,926 INFO L226 Difference]: Without dead ends: 31118 [2021-05-21 20:28:34,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 197.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:35,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31118 states. [2021-05-21 20:28:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31118 to 13363. [2021-05-21 20:28:36,106 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) [2021-05-21 20:28:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 70944 transitions. [2021-05-21 20:28:36,148 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 70944 transitions. Word has length 33 [2021-05-21 20:28:36,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:36,149 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 70944 transitions. [2021-05-21 20:28:36,149 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) [2021-05-21 20:28:36,149 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 70944 transitions. [2021-05-21 20:28:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:36,176 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:36,176 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:36,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-05-21 20:28:36,176 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:36,176 INFO L82 PathProgramCache]: Analyzing trace with hash -658734309, now seen corresponding path program 119 times [2021-05-21 20:28:36,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:36,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954543480] [2021-05-21 20:28:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:36,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:36,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954543480] [2021-05-21 20:28:36,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954543480] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:36,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:36,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:36,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074142509] [2021-05-21 20:28:36,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:36,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:36,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:36,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:36,334 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) [2021-05-21 20:28:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:36,550 INFO L93 Difference]: Finished difference Result 32426 states and 162369 transitions. [2021-05-21 20:28:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:36,550 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 [2021-05-21 20:28:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:36,653 INFO L225 Difference]: With dead ends: 32426 [2021-05-21 20:28:36,654 INFO L226 Difference]: Without dead ends: 31532 [2021-05-21 20:28:36,654 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 [2021-05-21 20:28:37,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31532 states. [2021-05-21 20:28:37,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31532 to 13618. [2021-05-21 20:28:37,864 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) [2021-05-21 20:28:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13618 states to 13618 states and 71967 transitions. [2021-05-21 20:28:37,907 INFO L78 Accepts]: Start accepts. Automaton has 13618 states and 71967 transitions. Word has length 33 [2021-05-21 20:28:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:37,907 INFO L482 AbstractCegarLoop]: Abstraction has 13618 states and 71967 transitions. [2021-05-21 20:28:37,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 13618 states and 71967 transitions. [2021-05-21 20:28:37,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:37,934 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:37,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:37,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-05-21 20:28:37,935 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:37,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1050867453, now seen corresponding path program 120 times [2021-05-21 20:28:37,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:37,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403625306] [2021-05-21 20:28:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:38,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:38,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403625306] [2021-05-21 20:28:38,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403625306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:38,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:38,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:38,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18963735] [2021-05-21 20:28:38,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:38,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:38,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:38,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:38,084 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) [2021-05-21 20:28:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:38,304 INFO L93 Difference]: Finished difference Result 32297 states and 161600 transitions. [2021-05-21 20:28:38,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:38,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:38,403 INFO L225 Difference]: With dead ends: 32297 [2021-05-21 20:28:38,403 INFO L226 Difference]: Without dead ends: 31067 [2021-05-21 20:28:38,404 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31067 states. [2021-05-21 20:28:39,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31067 to 13153. [2021-05-21 20:28:39,586 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) [2021-05-21 20:28:39,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13153 states to 13153 states and 70128 transitions. [2021-05-21 20:28:39,626 INFO L78 Accepts]: Start accepts. Automaton has 13153 states and 70128 transitions. Word has length 33 [2021-05-21 20:28:39,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:39,626 INFO L482 AbstractCegarLoop]: Abstraction has 13153 states and 70128 transitions. [2021-05-21 20:28:39,626 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) [2021-05-21 20:28:39,627 INFO L276 IsEmpty]: Start isEmpty. Operand 13153 states and 70128 transitions. [2021-05-21 20:28:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:39,653 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:39,653 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] [2021-05-21 20:28:39,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-05-21 20:28:39,654 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:39,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:39,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1955285691, now seen corresponding path program 121 times [2021-05-21 20:28:39,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:39,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929084004] [2021-05-21 20:28:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:39,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:39,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929084004] [2021-05-21 20:28:39,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929084004] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:39,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:39,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:39,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382975511] [2021-05-21 20:28:39,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:39,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:39,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:39,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:39,804 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) [2021-05-21 20:28:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:40,244 INFO L93 Difference]: Finished difference Result 31566 states and 158987 transitions. [2021-05-21 20:28:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:40,245 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:40,345 INFO L225 Difference]: With dead ends: 31566 [2021-05-21 20:28:40,345 INFO L226 Difference]: Without dead ends: 30807 [2021-05-21 20:28:40,346 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 172.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:41,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30807 states. [2021-05-21 20:28:41,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30807 to 13431. [2021-05-21 20:28:41,368 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) [2021-05-21 20:28:41,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13431 states to 13431 states and 71545 transitions. [2021-05-21 20:28:41,410 INFO L78 Accepts]: Start accepts. Automaton has 13431 states and 71545 transitions. Word has length 33 [2021-05-21 20:28:41,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:41,410 INFO L482 AbstractCegarLoop]: Abstraction has 13431 states and 71545 transitions. [2021-05-21 20:28:41,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:41,410 INFO L276 IsEmpty]: Start isEmpty. Operand 13431 states and 71545 transitions. [2021-05-21 20:28:41,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:41,438 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:41,438 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] [2021-05-21 20:28:41,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-05-21 20:28:41,438 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:41,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:41,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1108488729, now seen corresponding path program 122 times [2021-05-21 20:28:41,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:41,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085183345] [2021-05-21 20:28:41,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:41,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:41,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085183345] [2021-05-21 20:28:41,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085183345] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:41,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:41,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:41,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126159969] [2021-05-21 20:28:41,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:41,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:41,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:41,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:41,588 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) [2021-05-21 20:28:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:41,984 INFO L93 Difference]: Finished difference Result 31558 states and 158839 transitions. [2021-05-21 20:28:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:42,085 INFO L225 Difference]: With dead ends: 31558 [2021-05-21 20:28:42,085 INFO L226 Difference]: Without dead ends: 30687 [2021-05-21 20:28:42,085 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 [2021-05-21 20:28:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30687 states. [2021-05-21 20:28:43,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30687 to 13311. [2021-05-21 20:28:43,118 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) [2021-05-21 20:28:43,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13311 states to 13311 states and 70993 transitions. [2021-05-21 20:28:43,325 INFO L78 Accepts]: Start accepts. Automaton has 13311 states and 70993 transitions. Word has length 33 [2021-05-21 20:28:43,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:43,325 INFO L482 AbstractCegarLoop]: Abstraction has 13311 states and 70993 transitions. [2021-05-21 20:28:43,325 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) [2021-05-21 20:28:43,325 INFO L276 IsEmpty]: Start isEmpty. Operand 13311 states and 70993 transitions. [2021-05-21 20:28:43,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:43,353 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:43,353 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] [2021-05-21 20:28:43,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-05-21 20:28:43,354 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:43,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:43,354 INFO L82 PathProgramCache]: Analyzing trace with hash -588287301, now seen corresponding path program 123 times [2021-05-21 20:28:43,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:43,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573124747] [2021-05-21 20:28:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:43,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:43,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573124747] [2021-05-21 20:28:43,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573124747] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:43,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:43,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:43,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155638000] [2021-05-21 20:28:43,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:43,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:43,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:43,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:43,531 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) [2021-05-21 20:28:43,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:43,760 INFO L93 Difference]: Finished difference Result 31777 states and 159886 transitions. [2021-05-21 20:28:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:43,760 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 [2021-05-21 20:28:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:43,861 INFO L225 Difference]: With dead ends: 31777 [2021-05-21 20:28:43,861 INFO L226 Difference]: Without dead ends: 31018 [2021-05-21 20:28:43,861 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 196.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:44,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31018 states. [2021-05-21 20:28:45,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31018 to 13499. [2021-05-21 20:28:45,050 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) [2021-05-21 20:28:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13499 states to 13499 states and 71817 transitions. [2021-05-21 20:28:45,094 INFO L78 Accepts]: Start accepts. Automaton has 13499 states and 71817 transitions. Word has length 33 [2021-05-21 20:28:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:45,094 INFO L482 AbstractCegarLoop]: Abstraction has 13499 states and 71817 transitions. [2021-05-21 20:28:45,094 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) [2021-05-21 20:28:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 13499 states and 71817 transitions. [2021-05-21 20:28:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:45,122 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:45,123 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] [2021-05-21 20:28:45,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-05-21 20:28:45,123 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:45,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:45,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1799793339, now seen corresponding path program 124 times [2021-05-21 20:28:45,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:45,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429806113] [2021-05-21 20:28:45,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:45,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:45,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429806113] [2021-05-21 20:28:45,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429806113] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:45,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:45,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:45,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561959731] [2021-05-21 20:28:45,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:45,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:45,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:45,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:45,288 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) [2021-05-21 20:28:45,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:45,513 INFO L93 Difference]: Finished difference Result 31912 states and 160357 transitions. [2021-05-21 20:28:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:45,513 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 [2021-05-21 20:28:45,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:45,614 INFO L225 Difference]: With dead ends: 31912 [2021-05-21 20:28:45,614 INFO L226 Difference]: Without dead ends: 30830 [2021-05-21 20:28:45,614 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:46,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30830 states. [2021-05-21 20:28:46,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30830 to 13311. [2021-05-21 20:28:46,769 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) [2021-05-21 20:28:46,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13311 states to 13311 states and 70901 transitions. [2021-05-21 20:28:46,811 INFO L78 Accepts]: Start accepts. Automaton has 13311 states and 70901 transitions. Word has length 33 [2021-05-21 20:28:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:46,811 INFO L482 AbstractCegarLoop]: Abstraction has 13311 states and 70901 transitions. [2021-05-21 20:28:46,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 13311 states and 70901 transitions. [2021-05-21 20:28:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:46,839 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:46,839 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:46,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-05-21 20:28:46,839 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:46,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1445035367, now seen corresponding path program 125 times [2021-05-21 20:28:46,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:46,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439596085] [2021-05-21 20:28:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:47,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:47,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439596085] [2021-05-21 20:28:47,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439596085] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:47,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:47,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:47,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512901312] [2021-05-21 20:28:47,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:47,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:47,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:47,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:47,001 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) [2021-05-21 20:28:47,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:47,229 INFO L93 Difference]: Finished difference Result 31757 states and 159722 transitions. [2021-05-21 20:28:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:47,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:47,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:47,328 INFO L225 Difference]: With dead ends: 31757 [2021-05-21 20:28:47,328 INFO L226 Difference]: Without dead ends: 31006 [2021-05-21 20:28:47,328 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 [2021-05-21 20:28:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31006 states. [2021-05-21 20:28:48,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31006 to 13495. [2021-05-21 20:28:48,493 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) [2021-05-21 20:28:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 71713 transitions. [2021-05-21 20:28:48,536 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 71713 transitions. Word has length 33 [2021-05-21 20:28:48,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:48,537 INFO L482 AbstractCegarLoop]: Abstraction has 13495 states and 71713 transitions. [2021-05-21 20:28:48,537 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) [2021-05-21 20:28:48,537 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 71713 transitions. [2021-05-21 20:28:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:48,564 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:48,564 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:48,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-05-21 20:28:48,564 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:48,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2062558725, now seen corresponding path program 126 times [2021-05-21 20:28:48,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:48,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263324718] [2021-05-21 20:28:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:48,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:48,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263324718] [2021-05-21 20:28:48,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263324718] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:48,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:48,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:48,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653537727] [2021-05-21 20:28:48,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:48,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:48,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:48,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:48,730 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) [2021-05-21 20:28:48,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:48,947 INFO L93 Difference]: Finished difference Result 31900 states and 160225 transitions. [2021-05-21 20:28:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:48,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:48,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:49,046 INFO L225 Difference]: With dead ends: 31900 [2021-05-21 20:28:49,046 INFO L226 Difference]: Without dead ends: 30730 [2021-05-21 20:28:49,046 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 [2021-05-21 20:28:49,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30730 states. [2021-05-21 20:28:50,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30730 to 13219. [2021-05-21 20:28:50,221 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) [2021-05-21 20:28:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70497 transitions. [2021-05-21 20:28:50,263 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70497 transitions. Word has length 33 [2021-05-21 20:28:50,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:50,263 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70497 transitions. [2021-05-21 20:28:50,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70497 transitions. [2021-05-21 20:28:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:50,291 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:50,291 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:50,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-05-21 20:28:50,291 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:50,291 INFO L82 PathProgramCache]: Analyzing trace with hash 574879647, now seen corresponding path program 127 times [2021-05-21 20:28:50,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:50,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084551927] [2021-05-21 20:28:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:50,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:50,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084551927] [2021-05-21 20:28:50,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084551927] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:50,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:50,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:50,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803384292] [2021-05-21 20:28:50,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:50,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:50,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:50,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:50,439 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) [2021-05-21 20:28:50,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:50,825 INFO L93 Difference]: Finished difference Result 31223 states and 157332 transitions. [2021-05-21 20:28:50,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:50,825 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:50,923 INFO L225 Difference]: With dead ends: 31223 [2021-05-21 20:28:50,923 INFO L226 Difference]: Without dead ends: 30464 [2021-05-21 20:28:50,924 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 [2021-05-21 20:28:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30464 states. [2021-05-21 20:28:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30464 to 13395. [2021-05-21 20:28:51,950 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) [2021-05-21 20:28:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71305 transitions. [2021-05-21 20:28:51,993 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71305 transitions. Word has length 33 [2021-05-21 20:28:51,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:51,993 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71305 transitions. [2021-05-21 20:28:51,993 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) [2021-05-21 20:28:51,993 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71305 transitions. [2021-05-21 20:28:52,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:52,020 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:52,020 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:52,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-05-21 20:28:52,021 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:52,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:52,021 INFO L82 PathProgramCache]: Analyzing trace with hash -271917315, now seen corresponding path program 128 times [2021-05-21 20:28:52,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:52,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244752041] [2021-05-21 20:28:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:52,207 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-05-21 20:28:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:52,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:52,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244752041] [2021-05-21 20:28:52,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244752041] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:52,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:52,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:52,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101929501] [2021-05-21 20:28:52,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:52,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:52,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:52,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:52,260 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) [2021-05-21 20:28:52,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:52,512 INFO L93 Difference]: Finished difference Result 31215 states and 157184 transitions. [2021-05-21 20:28:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:52,512 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 [2021-05-21 20:28:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:52,608 INFO L225 Difference]: With dead ends: 31215 [2021-05-21 20:28:52,609 INFO L226 Difference]: Without dead ends: 30344 [2021-05-21 20:28:52,609 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 260.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30344 states. [2021-05-21 20:28:53,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30344 to 13275. [2021-05-21 20:28:53,639 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) [2021-05-21 20:28:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70757 transitions. [2021-05-21 20:28:53,830 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70757 transitions. Word has length 33 [2021-05-21 20:28:53,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:53,830 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70757 transitions. [2021-05-21 20:28:53,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:53,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70757 transitions. [2021-05-21 20:28:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:53,857 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:53,857 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] [2021-05-21 20:28:53,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-05-21 20:28:53,857 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:53,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:53,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1448181891, now seen corresponding path program 129 times [2021-05-21 20:28:53,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:53,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990886313] [2021-05-21 20:28:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:53,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:53,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990886313] [2021-05-21 20:28:53,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990886313] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:53,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:53,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:53,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801715477] [2021-05-21 20:28:53,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:53,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:53,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:53,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:53,992 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) [2021-05-21 20:28:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:54,210 INFO L93 Difference]: Finished difference Result 31199 states and 157176 transitions. [2021-05-21 20:28:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:54,210 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 [2021-05-21 20:28:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:54,307 INFO L225 Difference]: With dead ends: 31199 [2021-05-21 20:28:54,307 INFO L226 Difference]: Without dead ends: 30440 [2021-05-21 20:28:54,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 157.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:55,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30440 states. [2021-05-21 20:28:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30440 to 13387. [2021-05-21 20:28:55,458 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) [2021-05-21 20:28:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71221 transitions. [2021-05-21 20:28:55,499 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71221 transitions. Word has length 33 [2021-05-21 20:28:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:55,500 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71221 transitions. [2021-05-21 20:28:55,500 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) [2021-05-21 20:28:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71221 transitions. [2021-05-21 20:28:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:55,527 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:55,527 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:55,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-05-21 20:28:55,527 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2050758525, now seen corresponding path program 130 times [2021-05-21 20:28:55,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:55,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193091284] [2021-05-21 20:28:55,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:55,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:55,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193091284] [2021-05-21 20:28:55,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193091284] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:55,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:55,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:55,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779923556] [2021-05-21 20:28:55,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:55,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:55,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:55,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:55,663 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) [2021-05-21 20:28:55,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:55,884 INFO L93 Difference]: Finished difference Result 31175 states and 156972 transitions. [2021-05-21 20:28:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:55,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:55,982 INFO L225 Difference]: With dead ends: 31175 [2021-05-21 20:28:55,982 INFO L226 Difference]: Without dead ends: 30328 [2021-05-21 20:28:55,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:28:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30328 states. [2021-05-21 20:28:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30328 to 13275. [2021-05-21 20:28:57,239 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) [2021-05-21 20:28:57,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70701 transitions. [2021-05-21 20:28:57,282 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70701 transitions. Word has length 33 [2021-05-21 20:28:57,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:57,282 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70701 transitions. [2021-05-21 20:28:57,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:57,282 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70701 transitions. [2021-05-21 20:28:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:57,310 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:57,310 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:57,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-05-21 20:28:57,310 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:57,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:57,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1990037339, now seen corresponding path program 131 times [2021-05-21 20:28:57,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:57,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935875940] [2021-05-21 20:28:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:57,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:57,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935875940] [2021-05-21 20:28:57,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935875940] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:57,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:57,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:57,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964002164] [2021-05-21 20:28:57,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:57,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:57,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:57,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:57,473 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) [2021-05-21 20:28:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:57,710 INFO L93 Difference]: Finished difference Result 31183 states and 157064 transitions. [2021-05-21 20:28:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:57,710 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 [2021-05-21 20:28:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:57,806 INFO L225 Difference]: With dead ends: 31183 [2021-05-21 20:28:57,806 INFO L226 Difference]: Without dead ends: 30432 [2021-05-21 20:28:57,806 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 [2021-05-21 20:28:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30432 states. [2021-05-21 20:28:58,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30432 to 13387. [2021-05-21 20:28:58,988 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) [2021-05-21 20:28:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71165 transitions. [2021-05-21 20:28:59,030 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71165 transitions. Word has length 33 [2021-05-21 20:28:59,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:28:59,030 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71165 transitions. [2021-05-21 20:28:59,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:28:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71165 transitions. [2021-05-21 20:28:59,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:28:59,057 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:28:59,057 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:28:59,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-05-21 20:28:59,057 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:28:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:28:59,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1509135293, now seen corresponding path program 132 times [2021-05-21 20:28:59,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:28:59,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475385715] [2021-05-21 20:28:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:28:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:28:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:28:59,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:28:59,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475385715] [2021-05-21 20:28:59,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475385715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:28:59,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:28:59,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:28:59,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164781420] [2021-05-21 20:28:59,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:28:59,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:28:59,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:28:59,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:28:59,193 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) [2021-05-21 20:28:59,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:28:59,443 INFO L93 Difference]: Finished difference Result 31167 states and 156888 transitions. [2021-05-21 20:28:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:28:59,443 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:28:59,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:28:59,539 INFO L225 Difference]: With dead ends: 31167 [2021-05-21 20:28:59,539 INFO L226 Difference]: Without dead ends: 30264 [2021-05-21 20:28:59,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 158.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:00,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30264 states. [2021-05-21 20:29:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30264 to 13219. [2021-05-21 20:29:00,696 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) [2021-05-21 20:29:00,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70469 transitions. [2021-05-21 20:29:00,737 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70469 transitions. Word has length 33 [2021-05-21 20:29:00,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:00,737 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70469 transitions. [2021-05-21 20:29:00,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70469 transitions. [2021-05-21 20:29:00,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:00,764 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:00,764 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:00,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-05-21 20:29:00,764 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:00,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:00,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1553355995, now seen corresponding path program 133 times [2021-05-21 20:29:00,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:00,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851629258] [2021-05-21 20:29:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:00,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:00,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:00,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851629258] [2021-05-21 20:29:00,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851629258] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:00,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:00,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:00,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33198130] [2021-05-21 20:29:00,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:00,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:00,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:00,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:00,909 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) [2021-05-21 20:29:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:01,279 INFO L93 Difference]: Finished difference Result 31506 states and 158659 transitions. [2021-05-21 20:29:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:01,280 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:01,378 INFO L225 Difference]: With dead ends: 31506 [2021-05-21 20:29:01,378 INFO L226 Difference]: Without dead ends: 30747 [2021-05-21 20:29:01,378 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 [2021-05-21 20:29:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30747 states. [2021-05-21 20:29:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30747 to 13419. [2021-05-21 20:29:02,401 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) [2021-05-21 20:29:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71425 transitions. [2021-05-21 20:29:02,443 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71425 transitions. Word has length 33 [2021-05-21 20:29:02,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:02,443 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71425 transitions. [2021-05-21 20:29:02,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71425 transitions. [2021-05-21 20:29:02,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:02,470 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:02,470 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:02,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-05-21 20:29:02,470 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:02,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:02,471 INFO L82 PathProgramCache]: Analyzing trace with hash 757329115, now seen corresponding path program 134 times [2021-05-21 20:29:02,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:02,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550107442] [2021-05-21 20:29:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:02,699 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-21 20:29:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:02,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:02,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550107442] [2021-05-21 20:29:02,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550107442] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:02,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:02,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:02,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385978061] [2021-05-21 20:29:02,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:02,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:02,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:02,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:02,724 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) [2021-05-21 20:29:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:02,944 INFO L93 Difference]: Finished difference Result 31482 states and 158455 transitions. [2021-05-21 20:29:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:03,042 INFO L225 Difference]: With dead ends: 31482 [2021-05-21 20:29:03,042 INFO L226 Difference]: Without dead ends: 30635 [2021-05-21 20:29:03,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 275.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:03,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30635 states. [2021-05-21 20:29:04,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30635 to 13307. [2021-05-21 20:29:04,087 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) [2021-05-21 20:29:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70905 transitions. [2021-05-21 20:29:04,283 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70905 transitions. Word has length 33 [2021-05-21 20:29:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:04,284 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70905 transitions. [2021-05-21 20:29:04,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70905 transitions. [2021-05-21 20:29:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:04,311 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:04,311 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:04,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-05-21 20:29:04,311 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:04,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:04,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1127380029, now seen corresponding path program 135 times [2021-05-21 20:29:04,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:04,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047997208] [2021-05-21 20:29:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:04,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:04,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047997208] [2021-05-21 20:29:04,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047997208] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:04,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:04,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:04,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847901771] [2021-05-21 20:29:04,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:04,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:04,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:04,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:04,487 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) [2021-05-21 20:29:04,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:04,726 INFO L93 Difference]: Finished difference Result 31741 states and 159662 transitions. [2021-05-21 20:29:04,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:04,726 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:04,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:04,823 INFO L225 Difference]: With dead ends: 31741 [2021-05-21 20:29:04,823 INFO L226 Difference]: Without dead ends: 30982 [2021-05-21 20:29:04,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 199.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30982 states. [2021-05-21 20:29:05,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30982 to 13495. [2021-05-21 20:29:05,990 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) [2021-05-21 20:29:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 71729 transitions. [2021-05-21 20:29:06,033 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 71729 transitions. Word has length 33 [2021-05-21 20:29:06,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:06,033 INFO L482 AbstractCegarLoop]: Abstraction has 13495 states and 71729 transitions. [2021-05-21 20:29:06,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:06,033 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 71729 transitions. [2021-05-21 20:29:06,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:06,061 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:06,061 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] [2021-05-21 20:29:06,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-05-21 20:29:06,061 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:06,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:06,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1557081307, now seen corresponding path program 136 times [2021-05-21 20:29:06,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:06,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177101606] [2021-05-21 20:29:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:06,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:06,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177101606] [2021-05-21 20:29:06,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177101606] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:06,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:06,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:06,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674866521] [2021-05-21 20:29:06,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:06,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:06,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:06,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:06,229 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) [2021-05-21 20:29:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:06,438 INFO L93 Difference]: Finished difference Result 31876 states and 160133 transitions. [2021-05-21 20:29:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:06,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:06,537 INFO L225 Difference]: With dead ends: 31876 [2021-05-21 20:29:06,538 INFO L226 Difference]: Without dead ends: 30794 [2021-05-21 20:29:06,538 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 171.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30794 states. [2021-05-21 20:29:07,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30794 to 13307. [2021-05-21 20:29:07,697 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) [2021-05-21 20:29:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70817 transitions. [2021-05-21 20:29:07,739 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70817 transitions. Word has length 33 [2021-05-21 20:29:07,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:07,739 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70817 transitions. [2021-05-21 20:29:07,739 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) [2021-05-21 20:29:07,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70817 transitions. [2021-05-21 20:29:07,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:07,766 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:07,766 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:07,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-05-21 20:29:07,766 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:07,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:07,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2104679205, now seen corresponding path program 137 times [2021-05-21 20:29:07,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:07,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999906136] [2021-05-21 20:29:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:07,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:07,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999906136] [2021-05-21 20:29:07,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999906136] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:07,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:07,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:07,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962268485] [2021-05-21 20:29:07,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:07,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:07,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:07,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:07,920 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) [2021-05-21 20:29:08,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:08,175 INFO L93 Difference]: Finished difference Result 31681 states and 159338 transitions. [2021-05-21 20:29:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:08,176 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 [2021-05-21 20:29:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:08,274 INFO L225 Difference]: With dead ends: 31681 [2021-05-21 20:29:08,274 INFO L226 Difference]: Without dead ends: 30946 [2021-05-21 20:29:08,274 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 [2021-05-21 20:29:09,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30946 states. [2021-05-21 20:29:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30946 to 13483. [2021-05-21 20:29:09,408 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) [2021-05-21 20:29:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71601 transitions. [2021-05-21 20:29:09,450 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71601 transitions. Word has length 33 [2021-05-21 20:29:09,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:09,450 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71601 transitions. [2021-05-21 20:29:09,450 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) [2021-05-21 20:29:09,450 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71601 transitions. [2021-05-21 20:29:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:09,478 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:09,478 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] [2021-05-21 20:29:09,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-05-21 20:29:09,479 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:09,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:09,479 INFO L82 PathProgramCache]: Analyzing trace with hash -2029144899, now seen corresponding path program 138 times [2021-05-21 20:29:09,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:09,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860465874] [2021-05-21 20:29:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:09,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:09,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860465874] [2021-05-21 20:29:09,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860465874] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:09,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:09,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:09,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516874926] [2021-05-21 20:29:09,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:09,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:09,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:09,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:09,637 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) [2021-05-21 20:29:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:09,848 INFO L93 Difference]: Finished difference Result 31840 states and 159913 transitions. [2021-05-21 20:29:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:10,113 INFO L225 Difference]: With dead ends: 31840 [2021-05-21 20:29:10,113 INFO L226 Difference]: Without dead ends: 30682 [2021-05-21 20:29:10,113 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30682 states. [2021-05-21 20:29:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30682 to 13219. [2021-05-21 20:29:11,090 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) [2021-05-21 20:29:11,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70425 transitions. [2021-05-21 20:29:11,130 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70425 transitions. Word has length 33 [2021-05-21 20:29:11,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:11,130 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70425 transitions. [2021-05-21 20:29:11,130 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) [2021-05-21 20:29:11,131 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70425 transitions. [2021-05-21 20:29:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:11,157 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:11,157 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] [2021-05-21 20:29:11,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-05-21 20:29:11,157 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:11,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:11,158 INFO L82 PathProgramCache]: Analyzing trace with hash -276468423, now seen corresponding path program 139 times [2021-05-21 20:29:11,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:11,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710344337] [2021-05-21 20:29:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:11,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:11,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710344337] [2021-05-21 20:29:11,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710344337] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:11,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:11,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:11,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502614783] [2021-05-21 20:29:11,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:11,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:11,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:11,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:11,307 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) [2021-05-21 20:29:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:11,697 INFO L93 Difference]: Finished difference Result 31478 states and 158515 transitions. [2021-05-21 20:29:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:11,697 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 [2021-05-21 20:29:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:11,798 INFO L225 Difference]: With dead ends: 31478 [2021-05-21 20:29:11,798 INFO L226 Difference]: Without dead ends: 30727 [2021-05-21 20:29:11,799 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 [2021-05-21 20:29:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30727 states. [2021-05-21 20:29:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30727 to 13419. [2021-05-21 20:29:12,825 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) [2021-05-21 20:29:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71381 transitions. [2021-05-21 20:29:12,866 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71381 transitions. Word has length 33 [2021-05-21 20:29:12,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:12,866 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71381 transitions. [2021-05-21 20:29:12,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71381 transitions. [2021-05-21 20:29:12,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:12,894 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:12,894 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:12,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-05-21 20:29:12,894 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:12,894 INFO L82 PathProgramCache]: Analyzing trace with hash -757370469, now seen corresponding path program 140 times [2021-05-21 20:29:12,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:12,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319029714] [2021-05-21 20:29:12,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:13,023 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-21 20:29:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:13,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:13,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319029714] [2021-05-21 20:29:13,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319029714] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:13,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:13,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:13,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436042407] [2021-05-21 20:29:13,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:13,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:13,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:13,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:13,162 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) [2021-05-21 20:29:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:13,380 INFO L93 Difference]: Finished difference Result 31462 states and 158339 transitions. [2021-05-21 20:29:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:13,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:13,478 INFO L225 Difference]: With dead ends: 31462 [2021-05-21 20:29:13,478 INFO L226 Difference]: Without dead ends: 30615 [2021-05-21 20:29:13,478 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 288.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30615 states. [2021-05-21 20:29:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30615 to 13307. [2021-05-21 20:29:14,638 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) [2021-05-21 20:29:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70861 transitions. [2021-05-21 20:29:14,680 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70861 transitions. Word has length 33 [2021-05-21 20:29:14,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:14,680 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70861 transitions. [2021-05-21 20:29:14,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:14,680 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70861 transitions. [2021-05-21 20:29:14,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:14,706 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:14,707 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:14,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-05-21 20:29:14,707 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:14,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:14,707 INFO L82 PathProgramCache]: Analyzing trace with hash -702444389, now seen corresponding path program 141 times [2021-05-21 20:29:14,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:14,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826731608] [2021-05-21 20:29:14,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:14,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:14,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826731608] [2021-05-21 20:29:14,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826731608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:14,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:14,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:14,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139592991] [2021-05-21 20:29:14,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:14,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:14,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:14,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:14,875 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) [2021-05-21 20:29:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:15,102 INFO L93 Difference]: Finished difference Result 31709 states and 159502 transitions. [2021-05-21 20:29:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:15,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:15,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:15,202 INFO L225 Difference]: With dead ends: 31709 [2021-05-21 20:29:15,202 INFO L226 Difference]: Without dead ends: 30958 [2021-05-21 20:29:15,203 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 [2021-05-21 20:29:15,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30958 states. [2021-05-21 20:29:16,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30958 to 13491. [2021-05-21 20:29:16,345 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) [2021-05-21 20:29:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71673 transitions. [2021-05-21 20:29:16,387 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71673 transitions. Word has length 33 [2021-05-21 20:29:16,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:16,387 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71673 transitions. [2021-05-21 20:29:16,387 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) [2021-05-21 20:29:16,387 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71673 transitions. [2021-05-21 20:29:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:16,415 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:16,415 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:16,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-05-21 20:29:16,415 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:16,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:16,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1016620187, now seen corresponding path program 142 times [2021-05-21 20:29:16,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:16,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665207115] [2021-05-21 20:29:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:16,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:16,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665207115] [2021-05-21 20:29:16,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665207115] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:16,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:16,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:16,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430742362] [2021-05-21 20:29:16,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:16,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:16,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:16,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:16,580 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) [2021-05-21 20:29:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:16,790 INFO L93 Difference]: Finished difference Result 31852 states and 160005 transitions. [2021-05-21 20:29:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:16,790 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:16,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:16,889 INFO L225 Difference]: With dead ends: 31852 [2021-05-21 20:29:16,889 INFO L226 Difference]: Without dead ends: 30774 [2021-05-21 20:29:16,889 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30774 states. [2021-05-21 20:29:18,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30774 to 13307. [2021-05-21 20:29:18,231 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) [2021-05-21 20:29:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70773 transitions. [2021-05-21 20:29:18,279 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70773 transitions. Word has length 33 [2021-05-21 20:29:18,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:18,279 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70773 transitions. [2021-05-21 20:29:18,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70773 transitions. [2021-05-21 20:29:18,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:18,308 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:18,308 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:18,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-05-21 20:29:18,308 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:18,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1491830659, now seen corresponding path program 143 times [2021-05-21 20:29:18,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:18,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498018352] [2021-05-21 20:29:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:18,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:18,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498018352] [2021-05-21 20:29:18,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498018352] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:18,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:18,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:18,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489188743] [2021-05-21 20:29:18,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:18,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:18,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:18,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:18,491 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) [2021-05-21 20:29:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:18,713 INFO L93 Difference]: Finished difference Result 31669 states and 159250 transitions. [2021-05-21 20:29:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:18,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:18,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:18,830 INFO L225 Difference]: With dead ends: 31669 [2021-05-21 20:29:18,830 INFO L226 Difference]: Without dead ends: 30934 [2021-05-21 20:29:18,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 202.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30934 states. [2021-05-21 20:29:20,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30934 to 13483. [2021-05-21 20:29:20,124 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) [2021-05-21 20:29:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71557 transitions. [2021-05-21 20:29:20,166 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71557 transitions. Word has length 33 [2021-05-21 20:29:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:20,166 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71557 transitions. [2021-05-21 20:29:20,166 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) [2021-05-21 20:29:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71557 transitions. [2021-05-21 20:29:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:20,193 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:20,193 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:20,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-05-21 20:29:20,193 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:20,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:20,194 INFO L82 PathProgramCache]: Analyzing trace with hash 849732827, now seen corresponding path program 144 times [2021-05-21 20:29:20,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:20,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854704093] [2021-05-21 20:29:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:20,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:20,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854704093] [2021-05-21 20:29:20,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854704093] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:20,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:20,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:20,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960706936] [2021-05-21 20:29:20,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:20,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:20,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:20,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:20,354 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) [2021-05-21 20:29:20,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:20,575 INFO L93 Difference]: Finished difference Result 31828 states and 159825 transitions. [2021-05-21 20:29:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:20,575 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 [2021-05-21 20:29:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:20,842 INFO L225 Difference]: With dead ends: 31828 [2021-05-21 20:29:20,842 INFO L226 Difference]: Without dead ends: 30626 [2021-05-21 20:29:20,843 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 [2021-05-21 20:29:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30626 states. [2021-05-21 20:29:21,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30626 to 13175. [2021-05-21 20:29:21,831 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) [2021-05-21 20:29:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13175 states to 13175 states and 70251 transitions. [2021-05-21 20:29:21,874 INFO L78 Accepts]: Start accepts. Automaton has 13175 states and 70251 transitions. Word has length 33 [2021-05-21 20:29:21,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:21,874 INFO L482 AbstractCegarLoop]: Abstraction has 13175 states and 70251 transitions. [2021-05-21 20:29:21,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:21,874 INFO L276 IsEmpty]: Start isEmpty. Operand 13175 states and 70251 transitions. [2021-05-21 20:29:21,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:21,902 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:21,902 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:21,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-05-21 20:29:21,902 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:21,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:21,902 INFO L82 PathProgramCache]: Analyzing trace with hash 450086331, now seen corresponding path program 145 times [2021-05-21 20:29:21,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:21,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66840157] [2021-05-21 20:29:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:22,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:22,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66840157] [2021-05-21 20:29:22,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66840157] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:22,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:22,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:22,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000913515] [2021-05-21 20:29:22,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:22,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:22,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:22,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:22,047 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) [2021-05-21 20:29:22,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:22,498 INFO L93 Difference]: Finished difference Result 31644 states and 159296 transitions. [2021-05-21 20:29:22,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:22,498 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 [2021-05-21 20:29:22,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:22,599 INFO L225 Difference]: With dead ends: 31644 [2021-05-21 20:29:22,599 INFO L226 Difference]: Without dead ends: 30885 [2021-05-21 20:29:22,599 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 [2021-05-21 20:29:23,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30885 states. [2021-05-21 20:29:23,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30885 to 13433. [2021-05-21 20:29:23,646 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) [2021-05-21 20:29:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13433 states to 13433 states and 71534 transitions. [2021-05-21 20:29:23,690 INFO L78 Accepts]: Start accepts. Automaton has 13433 states and 71534 transitions. Word has length 33 [2021-05-21 20:29:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:23,690 INFO L482 AbstractCegarLoop]: Abstraction has 13433 states and 71534 transitions. [2021-05-21 20:29:23,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:23,690 INFO L276 IsEmpty]: Start isEmpty. Operand 13433 states and 71534 transitions. [2021-05-21 20:29:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:23,826 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:23,826 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:23,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-05-21 20:29:23,826 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:23,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:23,826 INFO L82 PathProgramCache]: Analyzing trace with hash -396710631, now seen corresponding path program 146 times [2021-05-21 20:29:23,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:23,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359793203] [2021-05-21 20:29:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:23,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:23,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359793203] [2021-05-21 20:29:23,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359793203] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:23,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:23,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:23,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756917822] [2021-05-21 20:29:23,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:23,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:23,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:23,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:23,974 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) [2021-05-21 20:29:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:24,211 INFO L93 Difference]: Finished difference Result 31636 states and 159148 transitions. [2021-05-21 20:29:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:24,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:24,312 INFO L225 Difference]: With dead ends: 31636 [2021-05-21 20:29:24,312 INFO L226 Difference]: Without dead ends: 30765 [2021-05-21 20:29:24,312 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 [2021-05-21 20:29:25,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30765 states. [2021-05-21 20:29:25,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30765 to 13313. [2021-05-21 20:29:25,475 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) [2021-05-21 20:29:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70982 transitions. [2021-05-21 20:29:25,517 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70982 transitions. Word has length 33 [2021-05-21 20:29:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:25,517 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70982 transitions. [2021-05-21 20:29:25,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70982 transitions. [2021-05-21 20:29:25,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:25,545 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:25,545 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:25,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-05-21 20:29:25,545 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:25,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash -2093486661, now seen corresponding path program 147 times [2021-05-21 20:29:25,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:25,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557998872] [2021-05-21 20:29:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:25,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:25,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557998872] [2021-05-21 20:29:25,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557998872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:25,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:25,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:25,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029062779] [2021-05-21 20:29:25,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:25,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:25,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:25,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:25,699 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) [2021-05-21 20:29:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:25,926 INFO L93 Difference]: Finished difference Result 31855 states and 160195 transitions. [2021-05-21 20:29:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:25,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:25,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:26,027 INFO L225 Difference]: With dead ends: 31855 [2021-05-21 20:29:26,027 INFO L226 Difference]: Without dead ends: 31096 [2021-05-21 20:29:26,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31096 states. [2021-05-21 20:29:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31096 to 13501. [2021-05-21 20:29:27,189 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) [2021-05-21 20:29:27,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13501 states to 13501 states and 71806 transitions. [2021-05-21 20:29:27,231 INFO L78 Accepts]: Start accepts. Automaton has 13501 states and 71806 transitions. Word has length 33 [2021-05-21 20:29:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:27,231 INFO L482 AbstractCegarLoop]: Abstraction has 13501 states and 71806 transitions. [2021-05-21 20:29:27,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 13501 states and 71806 transitions. [2021-05-21 20:29:27,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:27,259 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:27,259 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] [2021-05-21 20:29:27,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-05-21 20:29:27,259 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:27,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:27,259 INFO L82 PathProgramCache]: Analyzing trace with hash 294593979, now seen corresponding path program 148 times [2021-05-21 20:29:27,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:27,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790184381] [2021-05-21 20:29:27,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:27,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:27,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790184381] [2021-05-21 20:29:27,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790184381] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:27,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:27,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:27,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878159021] [2021-05-21 20:29:27,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:27,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:27,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:27,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:27,412 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) [2021-05-21 20:29:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:27,614 INFO L93 Difference]: Finished difference Result 31990 states and 160666 transitions. [2021-05-21 20:29:27,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:27,615 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:27,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:27,715 INFO L225 Difference]: With dead ends: 31990 [2021-05-21 20:29:27,715 INFO L226 Difference]: Without dead ends: 30908 [2021-05-21 20:29:27,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 157.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:28,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30908 states. [2021-05-21 20:29:28,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30908 to 13313. [2021-05-21 20:29:28,927 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) [2021-05-21 20:29:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70890 transitions. [2021-05-21 20:29:28,969 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70890 transitions. Word has length 33 [2021-05-21 20:29:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:28,969 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70890 transitions. [2021-05-21 20:29:28,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70890 transitions. [2021-05-21 20:29:28,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:28,996 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:28,996 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:28,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-05-21 20:29:28,996 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:28,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:28,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1344732569, now seen corresponding path program 149 times [2021-05-21 20:29:28,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:28,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569099837] [2021-05-21 20:29:28,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:29,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:29,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569099837] [2021-05-21 20:29:29,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569099837] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:29,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:29,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:29,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529090302] [2021-05-21 20:29:29,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:29,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:29,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:29,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:29,151 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) [2021-05-21 20:29:29,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:29,366 INFO L93 Difference]: Finished difference Result 31835 states and 160031 transitions. [2021-05-21 20:29:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:29,367 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 [2021-05-21 20:29:29,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:29,463 INFO L225 Difference]: With dead ends: 31835 [2021-05-21 20:29:29,463 INFO L226 Difference]: Without dead ends: 31084 [2021-05-21 20:29:29,463 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 [2021-05-21 20:29:30,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31084 states. [2021-05-21 20:29:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31084 to 13497. [2021-05-21 20:29:30,666 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) [2021-05-21 20:29:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 71702 transitions. [2021-05-21 20:29:30,708 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 71702 transitions. Word has length 33 [2021-05-21 20:29:30,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:30,708 INFO L482 AbstractCegarLoop]: Abstraction has 13497 states and 71702 transitions. [2021-05-21 20:29:30,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 71702 transitions. [2021-05-21 20:29:30,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:30,735 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:30,735 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:30,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-05-21 20:29:30,735 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:30,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:30,736 INFO L82 PathProgramCache]: Analyzing trace with hash 727209211, now seen corresponding path program 150 times [2021-05-21 20:29:30,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:30,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147181474] [2021-05-21 20:29:30,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:30,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:30,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147181474] [2021-05-21 20:29:30,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147181474] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:30,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:30,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:30,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644898325] [2021-05-21 20:29:30,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:30,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:30,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:30,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:30,889 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) [2021-05-21 20:29:31,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:31,094 INFO L93 Difference]: Finished difference Result 31978 states and 160534 transitions. [2021-05-21 20:29:31,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:31,095 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:31,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:31,367 INFO L225 Difference]: With dead ends: 31978 [2021-05-21 20:29:31,367 INFO L226 Difference]: Without dead ends: 30808 [2021-05-21 20:29:31,368 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 157.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:32,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30808 states. [2021-05-21 20:29:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30808 to 13221. [2021-05-21 20:29:32,381 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) [2021-05-21 20:29:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13221 states to 13221 states and 70484 transitions. [2021-05-21 20:29:32,422 INFO L78 Accepts]: Start accepts. Automaton has 13221 states and 70484 transitions. Word has length 33 [2021-05-21 20:29:32,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:32,422 INFO L482 AbstractCegarLoop]: Abstraction has 13221 states and 70484 transitions. [2021-05-21 20:29:32,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:32,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13221 states and 70484 transitions. [2021-05-21 20:29:32,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:32,448 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:32,448 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] [2021-05-21 20:29:32,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-05-21 20:29:32,448 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:32,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:32,449 INFO L82 PathProgramCache]: Analyzing trace with hash -849025221, now seen corresponding path program 151 times [2021-05-21 20:29:32,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:32,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370574555] [2021-05-21 20:29:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:32,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:32,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370574555] [2021-05-21 20:29:32,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370574555] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:32,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:32,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:32,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899945419] [2021-05-21 20:29:32,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:32,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:32,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:32,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:32,577 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) [2021-05-21 20:29:32,846 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2021-05-21 20:29:32,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:32,958 INFO L93 Difference]: Finished difference Result 31353 states and 157851 transitions. [2021-05-21 20:29:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:32,959 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 [2021-05-21 20:29:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:33,058 INFO L225 Difference]: With dead ends: 31353 [2021-05-21 20:29:33,058 INFO L226 Difference]: Without dead ends: 30594 [2021-05-21 20:29:33,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 302.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:33,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30594 states. [2021-05-21 20:29:34,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30594 to 13401. [2021-05-21 20:29:34,103 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) [2021-05-21 20:29:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13401 states to 13401 states and 71312 transitions. [2021-05-21 20:29:34,327 INFO L78 Accepts]: Start accepts. Automaton has 13401 states and 71312 transitions. Word has length 33 [2021-05-21 20:29:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:34,327 INFO L482 AbstractCegarLoop]: Abstraction has 13401 states and 71312 transitions. [2021-05-21 20:29:34,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 13401 states and 71312 transitions. [2021-05-21 20:29:34,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:34,357 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:34,357 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:34,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-05-21 20:29:34,357 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:34,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1695822183, now seen corresponding path program 152 times [2021-05-21 20:29:34,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:34,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125516773] [2021-05-21 20:29:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:34,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:34,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125516773] [2021-05-21 20:29:34,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125516773] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:34,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:34,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:34,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985385145] [2021-05-21 20:29:34,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:34,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:34,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:34,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:34,486 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) [2021-05-21 20:29:34,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:34,741 INFO L93 Difference]: Finished difference Result 31345 states and 157703 transitions. [2021-05-21 20:29:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:34,742 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 [2021-05-21 20:29:34,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:34,837 INFO L225 Difference]: With dead ends: 31345 [2021-05-21 20:29:34,837 INFO L226 Difference]: Without dead ends: 30474 [2021-05-21 20:29:34,837 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30474 states. [2021-05-21 20:29:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30474 to 13281. [2021-05-21 20:29:36,016 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) [2021-05-21 20:29:36,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13281 states to 13281 states and 70760 transitions. [2021-05-21 20:29:36,057 INFO L78 Accepts]: Start accepts. Automaton has 13281 states and 70760 transitions. Word has length 33 [2021-05-21 20:29:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:36,058 INFO L482 AbstractCegarLoop]: Abstraction has 13281 states and 70760 transitions. [2021-05-21 20:29:36,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:36,058 INFO L276 IsEmpty]: Start isEmpty. Operand 13281 states and 70760 transitions. [2021-05-21 20:29:36,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:36,086 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:36,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:36,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-05-21 20:29:36,086 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:36,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:36,086 INFO L82 PathProgramCache]: Analyzing trace with hash 263930969, now seen corresponding path program 153 times [2021-05-21 20:29:36,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:36,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517816463] [2021-05-21 20:29:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:36,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:36,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517816463] [2021-05-21 20:29:36,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517816463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:36,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:36,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:36,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922968442] [2021-05-21 20:29:36,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:36,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:36,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:36,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:36,218 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) [2021-05-21 20:29:36,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:36,457 INFO L93 Difference]: Finished difference Result 31369 states and 157847 transitions. [2021-05-21 20:29:36,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:36,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:36,555 INFO L225 Difference]: With dead ends: 31369 [2021-05-21 20:29:36,555 INFO L226 Difference]: Without dead ends: 30610 [2021-05-21 20:29:36,555 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:37,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30610 states. [2021-05-21 20:29:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30610 to 13405. [2021-05-21 20:29:37,706 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) [2021-05-21 20:29:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13405 states to 13405 states and 71264 transitions. [2021-05-21 20:29:37,749 INFO L78 Accepts]: Start accepts. Automaton has 13405 states and 71264 transitions. Word has length 33 [2021-05-21 20:29:37,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:37,749 INFO L482 AbstractCegarLoop]: Abstraction has 13405 states and 71264 transitions. [2021-05-21 20:29:37,749 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) [2021-05-21 20:29:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 13405 states and 71264 transitions. [2021-05-21 20:29:37,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:37,777 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:37,777 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] [2021-05-21 20:29:37,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-05-21 20:29:37,777 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:37,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:37,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1272669095, now seen corresponding path program 154 times [2021-05-21 20:29:37,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:37,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112128310] [2021-05-21 20:29:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:37,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:37,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112128310] [2021-05-21 20:29:37,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112128310] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:37,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:37,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:37,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794232340] [2021-05-21 20:29:37,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:37,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:37,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:37,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:37,906 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) [2021-05-21 20:29:38,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:38,130 INFO L93 Difference]: Finished difference Result 31373 states and 157735 transitions. [2021-05-21 20:29:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:38,131 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:38,229 INFO L225 Difference]: With dead ends: 31373 [2021-05-21 20:29:38,229 INFO L226 Difference]: Without dead ends: 30486 [2021-05-21 20:29:38,229 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30486 states. [2021-05-21 20:29:39,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30486 to 13281. [2021-05-21 20:29:39,350 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) [2021-05-21 20:29:39,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13281 states to 13281 states and 70700 transitions. [2021-05-21 20:29:39,391 INFO L78 Accepts]: Start accepts. Automaton has 13281 states and 70700 transitions. Word has length 33 [2021-05-21 20:29:39,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:39,391 INFO L482 AbstractCegarLoop]: Abstraction has 13281 states and 70700 transitions. [2021-05-21 20:29:39,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:39,391 INFO L276 IsEmpty]: Start isEmpty. Operand 13281 states and 70700 transitions. [2021-05-21 20:29:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:39,418 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:39,418 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:39,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-05-21 20:29:39,418 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:39,418 INFO L82 PathProgramCache]: Analyzing trace with hash -592817097, now seen corresponding path program 155 times [2021-05-21 20:29:39,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:39,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394368116] [2021-05-21 20:29:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:39,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:39,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394368116] [2021-05-21 20:29:39,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394368116] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:39,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:39,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:39,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59344620] [2021-05-21 20:29:39,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:39,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:39,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:39,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:39,544 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) [2021-05-21 20:29:39,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:39,798 INFO L93 Difference]: Finished difference Result 31349 states and 157715 transitions. [2021-05-21 20:29:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:39,798 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:39,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:39,894 INFO L225 Difference]: With dead ends: 31349 [2021-05-21 20:29:39,894 INFO L226 Difference]: Without dead ends: 30598 [2021-05-21 20:29:39,894 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 [2021-05-21 20:29:40,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30598 states. [2021-05-21 20:29:41,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30598 to 13401. [2021-05-21 20:29:41,042 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) [2021-05-21 20:29:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13401 states to 13401 states and 71192 transitions. [2021-05-21 20:29:41,084 INFO L78 Accepts]: Start accepts. Automaton has 13401 states and 71192 transitions. Word has length 33 [2021-05-21 20:29:41,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:41,084 INFO L482 AbstractCegarLoop]: Abstraction has 13401 states and 71192 transitions. [2021-05-21 20:29:41,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 13401 states and 71192 transitions. [2021-05-21 20:29:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:41,112 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:41,112 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:41,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-05-21 20:29:41,112 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:41,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1698511513, now seen corresponding path program 156 times [2021-05-21 20:29:41,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:41,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104344867] [2021-05-21 20:29:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:41,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:41,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104344867] [2021-05-21 20:29:41,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104344867] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:41,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:41,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:41,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761124850] [2021-05-21 20:29:41,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:41,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:41,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:41,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:41,246 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) [2021-05-21 20:29:41,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:41,472 INFO L93 Difference]: Finished difference Result 31361 states and 157635 transitions. [2021-05-21 20:29:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:41,732 INFO L225 Difference]: With dead ends: 31361 [2021-05-21 20:29:41,733 INFO L226 Difference]: Without dead ends: 30418 [2021-05-21 20:29:41,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:42,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30418 states. [2021-05-21 20:29:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30418 to 13221. [2021-05-21 20:29:42,746 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) [2021-05-21 20:29:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13221 states to 13221 states and 70454 transitions. [2021-05-21 20:29:42,787 INFO L78 Accepts]: Start accepts. Automaton has 13221 states and 70454 transitions. Word has length 33 [2021-05-21 20:29:42,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:42,787 INFO L482 AbstractCegarLoop]: Abstraction has 13221 states and 70454 transitions. [2021-05-21 20:29:42,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 13221 states and 70454 transitions. [2021-05-21 20:29:42,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:42,814 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:42,814 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:42,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-05-21 20:29:42,814 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:42,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:42,814 INFO L82 PathProgramCache]: Analyzing trace with hash 363547737, now seen corresponding path program 157 times [2021-05-21 20:29:42,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:42,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119183184] [2021-05-21 20:29:42,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:42,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:42,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119183184] [2021-05-21 20:29:42,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119183184] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:42,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:42,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:42,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793934330] [2021-05-21 20:29:42,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:42,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:42,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:42,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:42,959 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) [2021-05-21 20:29:43,210 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2021-05-21 20:29:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:43,316 INFO L93 Difference]: Finished difference Result 31879 states and 160267 transitions. [2021-05-21 20:29:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:43,316 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:43,421 INFO L225 Difference]: With dead ends: 31879 [2021-05-21 20:29:43,421 INFO L226 Difference]: Without dead ends: 31120 [2021-05-21 20:29:43,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 305.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31120 states. [2021-05-21 20:29:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31120 to 13503. [2021-05-21 20:29:44,462 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) [2021-05-21 20:29:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71799 transitions. [2021-05-21 20:29:44,677 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71799 transitions. Word has length 33 [2021-05-21 20:29:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:44,677 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71799 transitions. [2021-05-21 20:29:44,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:44,678 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71799 transitions. [2021-05-21 20:29:44,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:44,708 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:44,708 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:44,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-05-21 20:29:44,708 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:44,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:44,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1543338919, now seen corresponding path program 158 times [2021-05-21 20:29:44,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:44,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493902244] [2021-05-21 20:29:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:44,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:44,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493902244] [2021-05-21 20:29:44,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493902244] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:44,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:44,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:44,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536559851] [2021-05-21 20:29:44,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:44,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:44,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:44,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:44,856 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) [2021-05-21 20:29:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:45,062 INFO L93 Difference]: Finished difference Result 32014 states and 160738 transitions. [2021-05-21 20:29:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:45,063 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 [2021-05-21 20:29:45,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:45,161 INFO L225 Difference]: With dead ends: 32014 [2021-05-21 20:29:45,161 INFO L226 Difference]: Without dead ends: 30932 [2021-05-21 20:29:45,161 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30932 states. [2021-05-21 20:29:46,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30932 to 13315. [2021-05-21 20:29:46,344 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) [2021-05-21 20:29:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70881 transitions. [2021-05-21 20:29:46,388 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70881 transitions. Word has length 33 [2021-05-21 20:29:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:46,388 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70881 transitions. [2021-05-21 20:29:46,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:46,388 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70881 transitions. [2021-05-21 20:29:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:46,418 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:46,418 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:46,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-05-21 20:29:46,418 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:46,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:46,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1764665275, now seen corresponding path program 159 times [2021-05-21 20:29:46,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:46,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361815354] [2021-05-21 20:29:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:46,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:46,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361815354] [2021-05-21 20:29:46,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361815354] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:46,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:46,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:46,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646471511] [2021-05-21 20:29:46,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:46,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:46,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:46,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:46,558 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) [2021-05-21 20:29:46,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:46,789 INFO L93 Difference]: Finished difference Result 31684 states and 159270 transitions. [2021-05-21 20:29:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:46,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:46,890 INFO L225 Difference]: With dead ends: 31684 [2021-05-21 20:29:46,890 INFO L226 Difference]: Without dead ends: 30925 [2021-05-21 20:29:46,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:47,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30925 states. [2021-05-21 20:29:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30925 to 13439. [2021-05-21 20:29:48,057 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) [2021-05-21 20:29:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13439 states to 13439 states and 71385 transitions. [2021-05-21 20:29:48,100 INFO L78 Accepts]: Start accepts. Automaton has 13439 states and 71385 transitions. Word has length 33 [2021-05-21 20:29:48,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:48,101 INFO L482 AbstractCegarLoop]: Abstraction has 13439 states and 71385 transitions. [2021-05-21 20:29:48,101 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) [2021-05-21 20:29:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 13439 states and 71385 transitions. [2021-05-21 20:29:48,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:48,129 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:48,129 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] [2021-05-21 20:29:48,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-05-21 20:29:48,129 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:48,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:48,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1809922983, now seen corresponding path program 160 times [2021-05-21 20:29:48,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:48,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131960144] [2021-05-21 20:29:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:48,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:48,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131960144] [2021-05-21 20:29:48,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131960144] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:48,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:48,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:48,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914305473] [2021-05-21 20:29:48,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:48,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:48,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:48,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:48,263 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) [2021-05-21 20:29:48,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:48,497 INFO L93 Difference]: Finished difference Result 31688 states and 159158 transitions. [2021-05-21 20:29:48,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:48,497 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 [2021-05-21 20:29:48,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:48,597 INFO L225 Difference]: With dead ends: 31688 [2021-05-21 20:29:48,597 INFO L226 Difference]: Without dead ends: 30801 [2021-05-21 20:29:48,597 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30801 states. [2021-05-21 20:29:49,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30801 to 13315. [2021-05-21 20:29:49,745 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) [2021-05-21 20:29:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13315 states to 13315 states and 70819 transitions. [2021-05-21 20:29:49,787 INFO L78 Accepts]: Start accepts. Automaton has 13315 states and 70819 transitions. Word has length 33 [2021-05-21 20:29:49,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:49,787 INFO L482 AbstractCegarLoop]: Abstraction has 13315 states and 70819 transitions. [2021-05-21 20:29:49,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 13315 states and 70819 transitions. [2021-05-21 20:29:49,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:49,814 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:49,814 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:49,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-05-21 20:29:49,814 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:49,815 INFO L82 PathProgramCache]: Analyzing trace with hash -747250599, now seen corresponding path program 161 times [2021-05-21 20:29:49,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:49,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720388989] [2021-05-21 20:29:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:49,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:49,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720388989] [2021-05-21 20:29:49,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720388989] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:49,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:49,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:49,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205699407] [2021-05-21 20:29:49,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:49,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:49,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:49,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:49,943 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) [2021-05-21 20:29:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:50,155 INFO L93 Difference]: Finished difference Result 32020 states and 160725 transitions. [2021-05-21 20:29:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:50,155 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 [2021-05-21 20:29:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:50,253 INFO L225 Difference]: With dead ends: 32020 [2021-05-21 20:29:50,253 INFO L226 Difference]: Without dead ends: 31126 [2021-05-21 20:29:50,253 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 133.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:51,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31126 states. [2021-05-21 20:29:51,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31126 to 13505. [2021-05-21 20:29:51,509 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) [2021-05-21 20:29:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13505 states to 13505 states and 71584 transitions. [2021-05-21 20:29:51,551 INFO L78 Accepts]: Start accepts. Automaton has 13505 states and 71584 transitions. Word has length 33 [2021-05-21 20:29:51,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:51,551 INFO L482 AbstractCegarLoop]: Abstraction has 13505 states and 71584 transitions. [2021-05-21 20:29:51,551 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) [2021-05-21 20:29:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand 13505 states and 71584 transitions. [2021-05-21 20:29:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:51,579 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:51,579 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:51,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-05-21 20:29:51,579 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:51,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:51,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1921210309, now seen corresponding path program 162 times [2021-05-21 20:29:51,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:51,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147401564] [2021-05-21 20:29:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:51,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:51,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147401564] [2021-05-21 20:29:51,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147401564] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:51,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:51,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:51,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651431241] [2021-05-21 20:29:51,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:51,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:51,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:51,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:51,707 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) [2021-05-21 20:29:51,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:51,939 INFO L93 Difference]: Finished difference Result 31889 states and 159952 transitions. [2021-05-21 20:29:51,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:51,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:51,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:52,262 INFO L225 Difference]: With dead ends: 31889 [2021-05-21 20:29:52,262 INFO L226 Difference]: Without dead ends: 30842 [2021-05-21 20:29:52,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:52,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30842 states. [2021-05-21 20:29:53,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30842 to 13221. [2021-05-21 20:29:53,305 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) [2021-05-21 20:29:53,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13221 states to 13221 states and 70408 transitions. [2021-05-21 20:29:53,348 INFO L78 Accepts]: Start accepts. Automaton has 13221 states and 70408 transitions. Word has length 33 [2021-05-21 20:29:53,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:53,348 INFO L482 AbstractCegarLoop]: Abstraction has 13221 states and 70408 transitions. [2021-05-21 20:29:53,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 13221 states and 70408 transitions. [2021-05-21 20:29:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:53,376 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:53,376 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:53,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-05-21 20:29:53,376 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:53,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:53,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1466276681, now seen corresponding path program 163 times [2021-05-21 20:29:53,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:53,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881091129] [2021-05-21 20:29:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:53,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:53,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881091129] [2021-05-21 20:29:53,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881091129] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:53,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:53,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:53,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781834538] [2021-05-21 20:29:53,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:53,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:53,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:53,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:53,518 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) [2021-05-21 20:29:53,785 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2021-05-21 20:29:53,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:53,894 INFO L93 Difference]: Finished difference Result 31841 states and 160080 transitions. [2021-05-21 20:29:53,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:53,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:53,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:53,998 INFO L225 Difference]: With dead ends: 31841 [2021-05-21 20:29:53,999 INFO L226 Difference]: Without dead ends: 31090 [2021-05-21 20:29:53,999 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 318.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31090 states. [2021-05-21 20:29:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31090 to 13497. [2021-05-21 20:29:55,059 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) [2021-05-21 20:29:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 71732 transitions. [2021-05-21 20:29:55,281 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 71732 transitions. Word has length 33 [2021-05-21 20:29:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:55,281 INFO L482 AbstractCegarLoop]: Abstraction has 13497 states and 71732 transitions. [2021-05-21 20:29:55,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:55,281 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 71732 transitions. [2021-05-21 20:29:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:55,311 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:55,311 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:55,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-05-21 20:29:55,311 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:55,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:55,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2083800039, now seen corresponding path program 164 times [2021-05-21 20:29:55,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:55,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561367723] [2021-05-21 20:29:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:55,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:55,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561367723] [2021-05-21 20:29:55,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561367723] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:55,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:55,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:55,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130881950] [2021-05-21 20:29:55,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:55,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:55,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:55,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:55,451 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) [2021-05-21 20:29:55,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:55,671 INFO L93 Difference]: Finished difference Result 31984 states and 160583 transitions. [2021-05-21 20:29:55,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:55,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:55,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:55,771 INFO L225 Difference]: With dead ends: 31984 [2021-05-21 20:29:55,771 INFO L226 Difference]: Without dead ends: 30906 [2021-05-21 20:29:55,772 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 144.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:56,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30906 states. [2021-05-21 20:29:56,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30906 to 13313. [2021-05-21 20:29:56,954 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) [2021-05-21 20:29:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70828 transitions. [2021-05-21 20:29:56,997 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70828 transitions. Word has length 33 [2021-05-21 20:29:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:56,997 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70828 transitions. [2021-05-21 20:29:56,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:29:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70828 transitions. [2021-05-21 20:29:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:57,024 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:57,025 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:29:57,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-05-21 20:29:57,025 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:57,025 INFO L82 PathProgramCache]: Analyzing trace with hash -65159143, now seen corresponding path program 165 times [2021-05-21 20:29:57,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:57,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492256590] [2021-05-21 20:29:57,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:57,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:57,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492256590] [2021-05-21 20:29:57,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492256590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:57,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:57,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:57,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195664404] [2021-05-21 20:29:57,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:57,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:57,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:57,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:57,152 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) [2021-05-21 20:29:57,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:57,374 INFO L93 Difference]: Finished difference Result 31646 states and 159085 transitions. [2021-05-21 20:29:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:57,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:57,475 INFO L225 Difference]: With dead ends: 31646 [2021-05-21 20:29:57,475 INFO L226 Difference]: Without dead ends: 30895 [2021-05-21 20:29:57,475 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:29:58,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30895 states. [2021-05-21 20:29:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30895 to 13433. [2021-05-21 20:29:58,714 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) [2021-05-21 20:29:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13433 states to 13433 states and 71320 transitions. [2021-05-21 20:29:58,757 INFO L78 Accepts]: Start accepts. Automaton has 13433 states and 71320 transitions. Word has length 33 [2021-05-21 20:29:58,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:29:58,757 INFO L482 AbstractCegarLoop]: Abstraction has 13433 states and 71320 transitions. [2021-05-21 20:29:58,757 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) [2021-05-21 20:29:58,757 INFO L276 IsEmpty]: Start isEmpty. Operand 13433 states and 71320 transitions. [2021-05-21 20:29:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:29:58,786 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:29:58,786 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] [2021-05-21 20:29:58,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-05-21 20:29:58,786 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:29:58,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:29:58,786 INFO L82 PathProgramCache]: Analyzing trace with hash 188181273, now seen corresponding path program 166 times [2021-05-21 20:29:58,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:29:58,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626812147] [2021-05-21 20:29:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:29:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:29:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:29:58,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:29:58,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626812147] [2021-05-21 20:29:58,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626812147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:29:58,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:29:58,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:29:58,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314637747] [2021-05-21 20:29:58,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:29:58,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:29:58,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:29:58,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:29:58,913 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) [2021-05-21 20:29:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:29:59,132 INFO L93 Difference]: Finished difference Result 31658 states and 159005 transitions. [2021-05-21 20:29:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:29:59,132 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:29:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:29:59,228 INFO L225 Difference]: With dead ends: 31658 [2021-05-21 20:29:59,229 INFO L226 Difference]: Without dead ends: 30775 [2021-05-21 20:29:59,229 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:00,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30775 states. [2021-05-21 20:30:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30775 to 13313. [2021-05-21 20:30:00,357 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) [2021-05-21 20:30:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70768 transitions. [2021-05-21 20:30:00,398 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70768 transitions. Word has length 33 [2021-05-21 20:30:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:00,398 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70768 transitions. [2021-05-21 20:30:00,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70768 transitions. [2021-05-21 20:30:00,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:00,426 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:00,426 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:00,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-05-21 20:30:00,426 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:00,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:00,426 INFO L82 PathProgramCache]: Analyzing trace with hash 859738619, now seen corresponding path program 167 times [2021-05-21 20:30:00,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:00,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391456462] [2021-05-21 20:30:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:00,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:00,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391456462] [2021-05-21 20:30:00,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391456462] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:00,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:00,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:00,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351282393] [2021-05-21 20:30:00,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:00,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:00,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:00,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:00,555 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) [2021-05-21 20:30:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:00,771 INFO L93 Difference]: Finished difference Result 32002 states and 160614 transitions. [2021-05-21 20:30:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:00,771 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 [2021-05-21 20:30:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:00,871 INFO L225 Difference]: With dead ends: 32002 [2021-05-21 20:30:00,871 INFO L226 Difference]: Without dead ends: 31108 [2021-05-21 20:30:00,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 133.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:01,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31108 states. [2021-05-21 20:30:02,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31108 to 13503. [2021-05-21 20:30:02,033 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) [2021-05-21 20:30:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71533 transitions. [2021-05-21 20:30:02,076 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71533 transitions. Word has length 33 [2021-05-21 20:30:02,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:02,076 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71533 transitions. [2021-05-21 20:30:02,076 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) [2021-05-21 20:30:02,077 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71533 transitions. [2021-05-21 20:30:02,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:02,104 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:02,104 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] [2021-05-21 20:30:02,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-05-21 20:30:02,105 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:02,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:02,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1173274023, now seen corresponding path program 168 times [2021-05-21 20:30:02,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:02,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376229440] [2021-05-21 20:30:02,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:02,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:02,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376229440] [2021-05-21 20:30:02,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376229440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:02,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:02,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:02,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795310878] [2021-05-21 20:30:02,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:02,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:02,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:02,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:02,234 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) [2021-05-21 20:30:02,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:02,467 INFO L93 Difference]: Finished difference Result 31871 states and 159841 transitions. [2021-05-21 20:30:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:02,468 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 [2021-05-21 20:30:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:02,863 INFO L225 Difference]: With dead ends: 31871 [2021-05-21 20:30:02,864 INFO L226 Difference]: Without dead ends: 30780 [2021-05-21 20:30:02,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30780 states. [2021-05-21 20:30:03,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30780 to 13175. [2021-05-21 20:30:03,893 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) [2021-05-21 20:30:03,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13175 states to 13175 states and 70229 transitions. [2021-05-21 20:30:03,937 INFO L78 Accepts]: Start accepts. Automaton has 13175 states and 70229 transitions. Word has length 33 [2021-05-21 20:30:03,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:03,937 INFO L482 AbstractCegarLoop]: Abstraction has 13175 states and 70229 transitions. [2021-05-21 20:30:03,937 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) [2021-05-21 20:30:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand 13175 states and 70229 transitions. [2021-05-21 20:30:03,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:03,965 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:03,965 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:03,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-05-21 20:30:03,965 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:03,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:03,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2039190461, now seen corresponding path program 169 times [2021-05-21 20:30:03,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:03,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177094004] [2021-05-21 20:30:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:04,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:04,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177094004] [2021-05-21 20:30:04,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177094004] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:04,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:04,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:04,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745744215] [2021-05-21 20:30:04,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:04,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:04,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:04,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:04,106 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) [2021-05-21 20:30:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:04,469 INFO L93 Difference]: Finished difference Result 30788 states and 155165 transitions. [2021-05-21 20:30:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:04,469 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:04,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:04,570 INFO L225 Difference]: With dead ends: 30788 [2021-05-21 20:30:04,570 INFO L226 Difference]: Without dead ends: 30029 [2021-05-21 20:30:04,570 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 [2021-05-21 20:30:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30029 states. [2021-05-21 20:30:05,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30029 to 13379. [2021-05-21 20:30:05,619 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) [2021-05-21 20:30:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71209 transitions. [2021-05-21 20:30:05,662 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71209 transitions. Word has length 33 [2021-05-21 20:30:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:05,662 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71209 transitions. [2021-05-21 20:30:05,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:05,662 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71209 transitions. [2021-05-21 20:30:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:05,791 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:05,791 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] [2021-05-21 20:30:05,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-05-21 20:30:05,791 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:05,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:05,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1192393499, now seen corresponding path program 170 times [2021-05-21 20:30:05,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:05,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159769335] [2021-05-21 20:30:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:05,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:05,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159769335] [2021-05-21 20:30:05,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159769335] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:05,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:05,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:05,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564752240] [2021-05-21 20:30:05,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:05,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:05,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:05,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:05,944 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) [2021-05-21 20:30:06,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:06,201 INFO L93 Difference]: Finished difference Result 30780 states and 155017 transitions. [2021-05-21 20:30:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:06,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:06,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:06,298 INFO L225 Difference]: With dead ends: 30780 [2021-05-21 20:30:06,298 INFO L226 Difference]: Without dead ends: 29909 [2021-05-21 20:30:06,298 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 169.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:07,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29909 states. [2021-05-21 20:30:07,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29909 to 13259. [2021-05-21 20:30:07,508 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) [2021-05-21 20:30:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70661 transitions. [2021-05-21 20:30:07,550 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70661 transitions. Word has length 33 [2021-05-21 20:30:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:07,550 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70661 transitions. [2021-05-21 20:30:07,550 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70661 transitions. [2021-05-21 20:30:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:07,577 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:07,577 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:07,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-05-21 20:30:07,577 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:07,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:07,577 INFO L82 PathProgramCache]: Analyzing trace with hash 16128923, now seen corresponding path program 171 times [2021-05-21 20:30:07,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:07,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855293580] [2021-05-21 20:30:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:07,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:07,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855293580] [2021-05-21 20:30:07,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855293580] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:07,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:07,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:07,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376216553] [2021-05-21 20:30:07,720 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:07,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:07,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:07,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:07,720 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) [2021-05-21 20:30:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:07,962 INFO L93 Difference]: Finished difference Result 30764 states and 155009 transitions. [2021-05-21 20:30:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:07,962 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 [2021-05-21 20:30:07,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:08,063 INFO L225 Difference]: With dead ends: 30764 [2021-05-21 20:30:08,064 INFO L226 Difference]: Without dead ends: 30005 [2021-05-21 20:30:08,064 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 [2021-05-21 20:30:08,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30005 states. [2021-05-21 20:30:09,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30005 to 13371. [2021-05-21 20:30:09,226 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) [2021-05-21 20:30:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71125 transitions. [2021-05-21 20:30:09,268 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71125 transitions. Word has length 33 [2021-05-21 20:30:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:09,268 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71125 transitions. [2021-05-21 20:30:09,268 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) [2021-05-21 20:30:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71125 transitions. [2021-05-21 20:30:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:09,296 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:09,296 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:09,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-05-21 20:30:09,296 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:09,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:09,297 INFO L82 PathProgramCache]: Analyzing trace with hash -779897957, now seen corresponding path program 172 times [2021-05-21 20:30:09,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:09,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929440514] [2021-05-21 20:30:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:09,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:09,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929440514] [2021-05-21 20:30:09,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929440514] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:09,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:09,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:09,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598918806] [2021-05-21 20:30:09,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:09,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:09,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:09,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:09,431 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) [2021-05-21 20:30:09,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:09,650 INFO L93 Difference]: Finished difference Result 30740 states and 154805 transitions. [2021-05-21 20:30:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:09,650 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:09,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:09,747 INFO L225 Difference]: With dead ends: 30740 [2021-05-21 20:30:09,747 INFO L226 Difference]: Without dead ends: 29893 [2021-05-21 20:30:09,747 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29893 states. [2021-05-21 20:30:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29893 to 13259. [2021-05-21 20:30:10,883 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) [2021-05-21 20:30:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70605 transitions. [2021-05-21 20:30:10,926 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70605 transitions. Word has length 33 [2021-05-21 20:30:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:10,926 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70605 transitions. [2021-05-21 20:30:10,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70605 transitions. [2021-05-21 20:30:10,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:10,954 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:10,954 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] [2021-05-21 20:30:10,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-05-21 20:30:10,954 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:10,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:10,954 INFO L82 PathProgramCache]: Analyzing trace with hash -840619143, now seen corresponding path program 173 times [2021-05-21 20:30:10,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:10,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661796261] [2021-05-21 20:30:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:11,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:11,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661796261] [2021-05-21 20:30:11,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661796261] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:11,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:11,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:11,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246365304] [2021-05-21 20:30:11,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:11,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:11,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:11,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:11,085 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) [2021-05-21 20:30:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:11,343 INFO L93 Difference]: Finished difference Result 30748 states and 154897 transitions. [2021-05-21 20:30:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:11,344 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 [2021-05-21 20:30:11,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:11,440 INFO L225 Difference]: With dead ends: 30748 [2021-05-21 20:30:11,440 INFO L226 Difference]: Without dead ends: 29997 [2021-05-21 20:30:11,441 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 154.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:12,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29997 states. [2021-05-21 20:30:12,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29997 to 13371. [2021-05-21 20:30:12,584 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) [2021-05-21 20:30:12,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71069 transitions. [2021-05-21 20:30:12,628 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71069 transitions. Word has length 33 [2021-05-21 20:30:12,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:12,629 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71069 transitions. [2021-05-21 20:30:12,629 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) [2021-05-21 20:30:12,629 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71069 transitions. [2021-05-21 20:30:12,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:12,658 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:12,658 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:12,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-05-21 20:30:12,658 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:12,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:12,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1321521189, now seen corresponding path program 174 times [2021-05-21 20:30:12,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:12,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342935282] [2021-05-21 20:30:12,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:12,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:12,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342935282] [2021-05-21 20:30:12,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342935282] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:12,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:12,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:12,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184871920] [2021-05-21 20:30:12,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:12,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:12,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:12,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:12,787 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) [2021-05-21 20:30:13,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:13,017 INFO L93 Difference]: Finished difference Result 30732 states and 154721 transitions. [2021-05-21 20:30:13,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:13,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:13,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:13,113 INFO L225 Difference]: With dead ends: 30732 [2021-05-21 20:30:13,113 INFO L226 Difference]: Without dead ends: 29829 [2021-05-21 20:30:13,113 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:13,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29829 states. [2021-05-21 20:30:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29829 to 13203. [2021-05-21 20:30:14,277 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) [2021-05-21 20:30:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13203 states to 13203 states and 70373 transitions. [2021-05-21 20:30:14,320 INFO L78 Accepts]: Start accepts. Automaton has 13203 states and 70373 transitions. Word has length 33 [2021-05-21 20:30:14,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:14,320 INFO L482 AbstractCegarLoop]: Abstraction has 13203 states and 70373 transitions. [2021-05-21 20:30:14,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:14,320 INFO L276 IsEmpty]: Start isEmpty. Operand 13203 states and 70373 transitions. [2021-05-21 20:30:14,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:14,348 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:14,348 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:14,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-05-21 20:30:14,348 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:14,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:14,349 INFO L82 PathProgramCache]: Analyzing trace with hash -275906499, now seen corresponding path program 175 times [2021-05-21 20:30:14,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:14,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414882413] [2021-05-21 20:30:14,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:14,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:14,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414882413] [2021-05-21 20:30:14,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414882413] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:14,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:14,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:14,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482257979] [2021-05-21 20:30:14,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:14,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:14,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:14,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:14,481 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) [2021-05-21 20:30:14,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:14,893 INFO L93 Difference]: Finished difference Result 30840 states and 155349 transitions. [2021-05-21 20:30:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:14,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:14,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:15,003 INFO L225 Difference]: With dead ends: 30840 [2021-05-21 20:30:15,004 INFO L226 Difference]: Without dead ends: 30081 [2021-05-21 20:30:15,004 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 [2021-05-21 20:30:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30081 states. [2021-05-21 20:30:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30081 to 13383. [2021-05-21 20:30:16,043 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) [2021-05-21 20:30:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13383 states to 13383 states and 71201 transitions. [2021-05-21 20:30:16,088 INFO L78 Accepts]: Start accepts. Automaton has 13383 states and 71201 transitions. Word has length 33 [2021-05-21 20:30:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:16,088 INFO L482 AbstractCegarLoop]: Abstraction has 13383 states and 71201 transitions. [2021-05-21 20:30:16,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 13383 states and 71201 transitions. [2021-05-21 20:30:16,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:16,117 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:16,117 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] [2021-05-21 20:30:16,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-05-21 20:30:16,117 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:16,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:16,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1122703461, now seen corresponding path program 176 times [2021-05-21 20:30:16,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:16,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052561600] [2021-05-21 20:30:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:16,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:16,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052561600] [2021-05-21 20:30:16,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052561600] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:16,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:16,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:16,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541772425] [2021-05-21 20:30:16,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:16,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:16,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:16,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:16,255 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) [2021-05-21 20:30:16,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:16,608 INFO L93 Difference]: Finished difference Result 30832 states and 155201 transitions. [2021-05-21 20:30:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:16,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:16,707 INFO L225 Difference]: With dead ends: 30832 [2021-05-21 20:30:16,708 INFO L226 Difference]: Without dead ends: 29961 [2021-05-21 20:30:16,708 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 [2021-05-21 20:30:17,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29961 states. [2021-05-21 20:30:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29961 to 13263. [2021-05-21 20:30:17,742 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) [2021-05-21 20:30:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13263 states to 13263 states and 70649 transitions. [2021-05-21 20:30:17,961 INFO L78 Accepts]: Start accepts. Automaton has 13263 states and 70649 transitions. Word has length 33 [2021-05-21 20:30:17,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:17,961 INFO L482 AbstractCegarLoop]: Abstraction has 13263 states and 70649 transitions. [2021-05-21 20:30:17,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 13263 states and 70649 transitions. [2021-05-21 20:30:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:17,992 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:17,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:17,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-05-21 20:30:17,992 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:17,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:17,992 INFO L82 PathProgramCache]: Analyzing trace with hash 838617149, now seen corresponding path program 177 times [2021-05-21 20:30:17,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:17,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809297545] [2021-05-21 20:30:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:18,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:18,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809297545] [2021-05-21 20:30:18,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809297545] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:18,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:18,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:18,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524044105] [2021-05-21 20:30:18,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:18,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:18,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:18,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:18,116 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) [2021-05-21 20:30:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:18,372 INFO L93 Difference]: Finished difference Result 30856 states and 155345 transitions. [2021-05-21 20:30:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:18,372 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 [2021-05-21 20:30:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:18,470 INFO L225 Difference]: With dead ends: 30856 [2021-05-21 20:30:18,471 INFO L226 Difference]: Without dead ends: 30097 [2021-05-21 20:30:18,471 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 [2021-05-21 20:30:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30097 states. [2021-05-21 20:30:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30097 to 13387. [2021-05-21 20:30:19,662 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) [2021-05-21 20:30:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71153 transitions. [2021-05-21 20:30:19,705 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71153 transitions. Word has length 33 [2021-05-21 20:30:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:19,705 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71153 transitions. [2021-05-21 20:30:19,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71153 transitions. [2021-05-21 20:30:19,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:19,733 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:19,733 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:19,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-05-21 20:30:19,733 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:19,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:19,733 INFO L82 PathProgramCache]: Analyzing trace with hash -697982915, now seen corresponding path program 178 times [2021-05-21 20:30:19,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:19,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68324564] [2021-05-21 20:30:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:19,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:19,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68324564] [2021-05-21 20:30:19,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68324564] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:19,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:19,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:19,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387209710] [2021-05-21 20:30:19,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:19,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:19,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:19,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:19,866 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) [2021-05-21 20:30:20,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:20,117 INFO L93 Difference]: Finished difference Result 30860 states and 155233 transitions. [2021-05-21 20:30:20,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:20,117 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:20,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:20,215 INFO L225 Difference]: With dead ends: 30860 [2021-05-21 20:30:20,215 INFO L226 Difference]: Without dead ends: 29973 [2021-05-21 20:30:20,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 168.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:20,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29973 states. [2021-05-21 20:30:21,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29973 to 13263. [2021-05-21 20:30:21,360 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) [2021-05-21 20:30:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13263 states to 13263 states and 70589 transitions. [2021-05-21 20:30:21,404 INFO L78 Accepts]: Start accepts. Automaton has 13263 states and 70589 transitions. Word has length 33 [2021-05-21 20:30:21,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:21,404 INFO L482 AbstractCegarLoop]: Abstraction has 13263 states and 70589 transitions. [2021-05-21 20:30:21,404 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) [2021-05-21 20:30:21,404 INFO L276 IsEmpty]: Start isEmpty. Operand 13263 states and 70589 transitions. [2021-05-21 20:30:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:21,432 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:21,432 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:21,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-05-21 20:30:21,432 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:21,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:21,432 INFO L82 PathProgramCache]: Analyzing trace with hash -18130917, now seen corresponding path program 179 times [2021-05-21 20:30:21,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:21,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364238647] [2021-05-21 20:30:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:21,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:21,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364238647] [2021-05-21 20:30:21,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364238647] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:21,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:21,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:21,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068880519] [2021-05-21 20:30:21,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:21,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:21,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:21,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:21,571 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) [2021-05-21 20:30:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:21,814 INFO L93 Difference]: Finished difference Result 30836 states and 155213 transitions. [2021-05-21 20:30:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:21,814 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 [2021-05-21 20:30:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:21,913 INFO L225 Difference]: With dead ends: 30836 [2021-05-21 20:30:21,913 INFO L226 Difference]: Without dead ends: 30085 [2021-05-21 20:30:21,914 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 [2021-05-21 20:30:22,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30085 states. [2021-05-21 20:30:23,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30085 to 13383. [2021-05-21 20:30:23,092 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) [2021-05-21 20:30:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13383 states to 13383 states and 71081 transitions. [2021-05-21 20:30:23,135 INFO L78 Accepts]: Start accepts. Automaton has 13383 states and 71081 transitions. Word has length 33 [2021-05-21 20:30:23,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:23,135 INFO L482 AbstractCegarLoop]: Abstraction has 13383 states and 71081 transitions. [2021-05-21 20:30:23,135 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) [2021-05-21 20:30:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 13383 states and 71081 transitions. [2021-05-21 20:30:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:23,163 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:23,163 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] [2021-05-21 20:30:23,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-05-21 20:30:23,164 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:23,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:23,164 INFO L82 PathProgramCache]: Analyzing trace with hash -2021769603, now seen corresponding path program 180 times [2021-05-21 20:30:23,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:23,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821406666] [2021-05-21 20:30:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:23,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:23,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821406666] [2021-05-21 20:30:23,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821406666] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:23,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:23,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:23,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788778183] [2021-05-21 20:30:23,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:23,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:23,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:23,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:23,292 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) [2021-05-21 20:30:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:23,530 INFO L93 Difference]: Finished difference Result 30848 states and 155133 transitions. [2021-05-21 20:30:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:23,530 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 [2021-05-21 20:30:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:23,628 INFO L225 Difference]: With dead ends: 30848 [2021-05-21 20:30:23,628 INFO L226 Difference]: Without dead ends: 29905 [2021-05-21 20:30:23,628 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:24,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29905 states. [2021-05-21 20:30:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29905 to 13203. [2021-05-21 20:30:24,776 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) [2021-05-21 20:30:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13203 states to 13203 states and 70345 transitions. [2021-05-21 20:30:24,819 INFO L78 Accepts]: Start accepts. Automaton has 13203 states and 70345 transitions. Word has length 33 [2021-05-21 20:30:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:24,819 INFO L482 AbstractCegarLoop]: Abstraction has 13203 states and 70345 transitions. [2021-05-21 20:30:24,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 13203 states and 70345 transitions. [2021-05-21 20:30:24,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:24,846 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:24,846 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:24,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-05-21 20:30:24,847 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:24,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:24,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1022922907, now seen corresponding path program 181 times [2021-05-21 20:30:24,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:24,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414221072] [2021-05-21 20:30:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:24,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:24,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:24,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414221072] [2021-05-21 20:30:24,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414221072] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:24,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:24,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:24,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27060986] [2021-05-21 20:30:24,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:24,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:24,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:24,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:24,975 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) [2021-05-21 20:30:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:25,219 INFO L93 Difference]: Finished difference Result 30780 states and 155065 transitions. [2021-05-21 20:30:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:25,220 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 [2021-05-21 20:30:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:25,321 INFO L225 Difference]: With dead ends: 30780 [2021-05-21 20:30:25,322 INFO L226 Difference]: Without dead ends: 30021 [2021-05-21 20:30:25,322 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:26,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30021 states. [2021-05-21 20:30:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30021 to 13371. [2021-05-21 20:30:26,506 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) [2021-05-21 20:30:26,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71125 transitions. [2021-05-21 20:30:26,551 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71125 transitions. Word has length 33 [2021-05-21 20:30:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:26,551 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71125 transitions. [2021-05-21 20:30:26,551 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) [2021-05-21 20:30:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71125 transitions. [2021-05-21 20:30:26,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:26,579 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:26,579 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:26,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-05-21 20:30:26,579 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:26,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:26,580 INFO L82 PathProgramCache]: Analyzing trace with hash 226896027, now seen corresponding path program 182 times [2021-05-21 20:30:26,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:26,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109552862] [2021-05-21 20:30:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:26,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:26,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109552862] [2021-05-21 20:30:26,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109552862] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:26,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:26,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:26,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877246594] [2021-05-21 20:30:26,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:26,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:26,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:26,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:26,706 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) [2021-05-21 20:30:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:27,141 INFO L93 Difference]: Finished difference Result 30756 states and 154861 transitions. [2021-05-21 20:30:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:27,241 INFO L225 Difference]: With dead ends: 30756 [2021-05-21 20:30:27,241 INFO L226 Difference]: Without dead ends: 29909 [2021-05-21 20:30:27,241 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 149.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:27,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29909 states. [2021-05-21 20:30:28,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29909 to 13259. [2021-05-21 20:30:28,274 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) [2021-05-21 20:30:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70605 transitions. [2021-05-21 20:30:28,316 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70605 transitions. Word has length 33 [2021-05-21 20:30:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:28,316 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70605 transitions. [2021-05-21 20:30:28,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70605 transitions. [2021-05-21 20:30:28,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:28,344 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:28,344 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:28,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-05-21 20:30:28,344 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:28,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:28,344 INFO L82 PathProgramCache]: Analyzing trace with hash -20021507, now seen corresponding path program 183 times [2021-05-21 20:30:28,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:28,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550365185] [2021-05-21 20:30:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:28,560 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-05-21 20:30:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:28,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:28,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550365185] [2021-05-21 20:30:28,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550365185] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:28,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:28,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:28,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915866070] [2021-05-21 20:30:28,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:28,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:28,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:28,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:28,586 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) [2021-05-21 20:30:28,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:28,807 INFO L93 Difference]: Finished difference Result 30820 states and 155165 transitions. [2021-05-21 20:30:28,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:28,807 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 [2021-05-21 20:30:28,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:28,905 INFO L225 Difference]: With dead ends: 30820 [2021-05-21 20:30:28,905 INFO L226 Difference]: Without dead ends: 30061 [2021-05-21 20:30:28,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 264.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:29,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30061 states. [2021-05-21 20:30:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30061 to 13383. [2021-05-21 20:30:29,949 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) [2021-05-21 20:30:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13383 states to 13383 states and 71109 transitions. [2021-05-21 20:30:30,168 INFO L78 Accepts]: Start accepts. Automaton has 13383 states and 71109 transitions. Word has length 33 [2021-05-21 20:30:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:30,168 INFO L482 AbstractCegarLoop]: Abstraction has 13383 states and 71109 transitions. [2021-05-21 20:30:30,168 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) [2021-05-21 20:30:30,168 INFO L276 IsEmpty]: Start isEmpty. Operand 13383 states and 71109 transitions. [2021-05-21 20:30:30,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:30,195 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:30,195 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] [2021-05-21 20:30:30,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-05-21 20:30:30,196 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:30,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:30,196 INFO L82 PathProgramCache]: Analyzing trace with hash 760064155, now seen corresponding path program 184 times [2021-05-21 20:30:30,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:30,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552827188] [2021-05-21 20:30:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:30,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:30,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552827188] [2021-05-21 20:30:30,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552827188] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:30,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:30,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:30,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567123193] [2021-05-21 20:30:30,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:30,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:30,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:30,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:30,324 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) [2021-05-21 20:30:30,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:30,543 INFO L93 Difference]: Finished difference Result 30824 states and 155053 transitions. [2021-05-21 20:30:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:30,543 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:30,637 INFO L225 Difference]: With dead ends: 30824 [2021-05-21 20:30:30,637 INFO L226 Difference]: Without dead ends: 29937 [2021-05-21 20:30:30,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:31,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29937 states. [2021-05-21 20:30:31,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29937 to 13259. [2021-05-21 20:30:31,782 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) [2021-05-21 20:30:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70549 transitions. [2021-05-21 20:30:31,823 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70549 transitions. Word has length 33 [2021-05-21 20:30:31,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:31,823 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70549 transitions. [2021-05-21 20:30:31,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70549 transitions. [2021-05-21 20:30:31,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:31,850 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:31,850 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] [2021-05-21 20:30:31,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-05-21 20:30:31,851 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:31,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:31,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1022984347, now seen corresponding path program 185 times [2021-05-21 20:30:31,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:31,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983268224] [2021-05-21 20:30:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:32,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:32,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983268224] [2021-05-21 20:30:32,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983268224] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:32,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:32,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:32,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295034226] [2021-05-21 20:30:32,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:32,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:32,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:32,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:32,001 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) [2021-05-21 20:30:32,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:32,220 INFO L93 Difference]: Finished difference Result 30760 states and 154873 transitions. [2021-05-21 20:30:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:32,221 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:32,316 INFO L225 Difference]: With dead ends: 30760 [2021-05-21 20:30:32,316 INFO L226 Difference]: Without dead ends: 30025 [2021-05-21 20:30:32,317 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 [2021-05-21 20:30:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30025 states. [2021-05-21 20:30:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30025 to 13371. [2021-05-21 20:30:33,456 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) [2021-05-21 20:30:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71013 transitions. [2021-05-21 20:30:33,498 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71013 transitions. Word has length 33 [2021-05-21 20:30:33,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:33,498 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71013 transitions. [2021-05-21 20:30:33,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:33,498 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71013 transitions. [2021-05-21 20:30:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:33,525 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:33,525 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:33,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-05-21 20:30:33,525 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:33,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:33,526 INFO L82 PathProgramCache]: Analyzing trace with hash -287596675, now seen corresponding path program 186 times [2021-05-21 20:30:33,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:33,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603847697] [2021-05-21 20:30:33,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:33,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:33,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603847697] [2021-05-21 20:30:33,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603847697] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:33,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:33,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:33,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42375379] [2021-05-21 20:30:33,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:33,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:33,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:33,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:33,667 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) [2021-05-21 20:30:33,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:33,894 INFO L93 Difference]: Finished difference Result 30788 states and 154865 transitions. [2021-05-21 20:30:33,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:33,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:33,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:33,991 INFO L225 Difference]: With dead ends: 30788 [2021-05-21 20:30:33,991 INFO L226 Difference]: Without dead ends: 29857 [2021-05-21 20:30:33,991 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 [2021-05-21 20:30:34,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29857 states. [2021-05-21 20:30:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29857 to 13203. [2021-05-21 20:30:35,144 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) [2021-05-21 20:30:35,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13203 states to 13203 states and 70317 transitions. [2021-05-21 20:30:35,186 INFO L78 Accepts]: Start accepts. Automaton has 13203 states and 70317 transitions. Word has length 33 [2021-05-21 20:30:35,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:35,186 INFO L482 AbstractCegarLoop]: Abstraction has 13203 states and 70317 transitions. [2021-05-21 20:30:35,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:35,186 INFO L276 IsEmpty]: Start isEmpty. Operand 13203 states and 70317 transitions. [2021-05-21 20:30:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:35,213 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:35,213 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:35,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-05-21 20:30:35,214 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:35,214 INFO L82 PathProgramCache]: Analyzing trace with hash -806901511, now seen corresponding path program 187 times [2021-05-21 20:30:35,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:35,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102524532] [2021-05-21 20:30:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:35,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:35,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102524532] [2021-05-21 20:30:35,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102524532] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:35,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:35,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:35,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827827221] [2021-05-21 20:30:35,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:35,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:35,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:35,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:35,345 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) [2021-05-21 20:30:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:35,603 INFO L93 Difference]: Finished difference Result 30752 states and 154937 transitions. [2021-05-21 20:30:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:35,604 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 [2021-05-21 20:30:35,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:35,702 INFO L225 Difference]: With dead ends: 30752 [2021-05-21 20:30:35,702 INFO L226 Difference]: Without dead ends: 30001 [2021-05-21 20:30:35,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30001 states. [2021-05-21 20:30:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30001 to 13371. [2021-05-21 20:30:36,931 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) [2021-05-21 20:30:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71097 transitions. [2021-05-21 20:30:36,975 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71097 transitions. Word has length 33 [2021-05-21 20:30:36,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:36,975 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71097 transitions. [2021-05-21 20:30:36,975 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) [2021-05-21 20:30:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71097 transitions. [2021-05-21 20:30:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:37,006 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:37,006 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:37,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-05-21 20:30:37,006 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:37,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:37,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1287803557, now seen corresponding path program 188 times [2021-05-21 20:30:37,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:37,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66557736] [2021-05-21 20:30:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:37,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:37,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66557736] [2021-05-21 20:30:37,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66557736] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:37,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:37,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:37,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652389788] [2021-05-21 20:30:37,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:37,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:37,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:37,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:37,154 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) [2021-05-21 20:30:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:37,385 INFO L93 Difference]: Finished difference Result 30736 states and 154761 transitions. [2021-05-21 20:30:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:37,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:37,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:37,655 INFO L225 Difference]: With dead ends: 30736 [2021-05-21 20:30:37,655 INFO L226 Difference]: Without dead ends: 29889 [2021-05-21 20:30:37,655 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 159.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:38,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29889 states. [2021-05-21 20:30:38,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29889 to 13259. [2021-05-21 20:30:38,659 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) [2021-05-21 20:30:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70577 transitions. [2021-05-21 20:30:38,703 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70577 transitions. Word has length 33 [2021-05-21 20:30:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:38,703 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70577 transitions. [2021-05-21 20:30:38,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70577 transitions. [2021-05-21 20:30:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:38,730 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:38,731 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:38,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-05-21 20:30:38,731 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:38,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:38,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1849845925, now seen corresponding path program 189 times [2021-05-21 20:30:38,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:38,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188283455] [2021-05-21 20:30:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:38,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:38,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188283455] [2021-05-21 20:30:38,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188283455] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:38,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:38,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:38,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537353734] [2021-05-21 20:30:38,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:38,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:38,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:38,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:38,861 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) [2021-05-21 20:30:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:39,218 INFO L93 Difference]: Finished difference Result 30788 states and 155021 transitions. [2021-05-21 20:30:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:39,218 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 [2021-05-21 20:30:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:39,315 INFO L225 Difference]: With dead ends: 30788 [2021-05-21 20:30:39,316 INFO L226 Difference]: Without dead ends: 30037 [2021-05-21 20:30:39,316 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 154.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:40,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30037 states. [2021-05-21 20:30:40,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30037 to 13379. [2021-05-21 20:30:40,353 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) [2021-05-21 20:30:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71069 transitions. [2021-05-21 20:30:40,396 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71069 transitions. Word has length 33 [2021-05-21 20:30:40,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:40,396 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71069 transitions. [2021-05-21 20:30:40,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71069 transitions. [2021-05-21 20:30:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:40,424 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:40,424 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:40,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-05-21 20:30:40,424 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:40,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1536798885, now seen corresponding path program 190 times [2021-05-21 20:30:40,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:40,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552166181] [2021-05-21 20:30:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:40,546 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-21 20:30:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:40,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:40,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552166181] [2021-05-21 20:30:40,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552166181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:40,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:40,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:40,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486536916] [2021-05-21 20:30:40,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:40,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:40,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:40,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:40,656 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) [2021-05-21 20:30:40,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:40,906 INFO L93 Difference]: Finished difference Result 30800 states and 154941 transitions. [2021-05-21 20:30:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:40,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:40,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:41,004 INFO L225 Difference]: With dead ends: 30800 [2021-05-21 20:30:41,004 INFO L226 Difference]: Without dead ends: 29917 [2021-05-21 20:30:41,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 256.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29917 states. [2021-05-21 20:30:42,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29917 to 13259. [2021-05-21 20:30:42,268 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) [2021-05-21 20:30:42,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 70521 transitions. [2021-05-21 20:30:42,309 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 70521 transitions. Word has length 33 [2021-05-21 20:30:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:42,309 INFO L482 AbstractCegarLoop]: Abstraction has 13259 states and 70521 transitions. [2021-05-21 20:30:42,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 70521 transitions. [2021-05-21 20:30:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:42,337 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:42,337 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] [2021-05-21 20:30:42,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-05-21 20:30:42,338 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:42,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:42,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1655735101, now seen corresponding path program 191 times [2021-05-21 20:30:42,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:42,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399703316] [2021-05-21 20:30:42,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:42,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:42,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399703316] [2021-05-21 20:30:42,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399703316] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:42,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:42,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:42,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988303520] [2021-05-21 20:30:42,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:42,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:42,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:42,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:42,487 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) [2021-05-21 20:30:42,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:42,736 INFO L93 Difference]: Finished difference Result 30748 states and 154801 transitions. [2021-05-21 20:30:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:42,736 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 [2021-05-21 20:30:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:42,832 INFO L225 Difference]: With dead ends: 30748 [2021-05-21 20:30:42,832 INFO L226 Difference]: Without dead ends: 30013 [2021-05-21 20:30:42,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 172.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:43,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30013 states. [2021-05-21 20:30:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30013 to 13371. [2021-05-21 20:30:43,971 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) [2021-05-21 20:30:44,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 70985 transitions. [2021-05-21 20:30:44,013 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 70985 transitions. Word has length 33 [2021-05-21 20:30:44,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:44,013 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 70985 transitions. [2021-05-21 20:30:44,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:44,013 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 70985 transitions. [2021-05-21 20:30:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:44,041 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:44,041 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:44,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-05-21 20:30:44,041 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:44,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:44,041 INFO L82 PathProgramCache]: Analyzing trace with hash -317570917, now seen corresponding path program 192 times [2021-05-21 20:30:44,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:44,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633419415] [2021-05-21 20:30:44,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:44,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:44,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633419415] [2021-05-21 20:30:44,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633419415] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:44,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:44,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:44,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407577586] [2021-05-21 20:30:44,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:44,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:44,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:44,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:44,196 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) [2021-05-21 20:30:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:44,412 INFO L93 Difference]: Finished difference Result 30776 states and 154793 transitions. [2021-05-21 20:30:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:44,412 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:44,510 INFO L225 Difference]: With dead ends: 30776 [2021-05-21 20:30:44,510 INFO L226 Difference]: Without dead ends: 29817 [2021-05-21 20:30:44,510 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 [2021-05-21 20:30:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29817 states. [2021-05-21 20:30:45,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29817 to 13175. [2021-05-21 20:30:45,655 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) [2021-05-21 20:30:45,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13175 states to 13175 states and 70215 transitions. [2021-05-21 20:30:45,697 INFO L78 Accepts]: Start accepts. Automaton has 13175 states and 70215 transitions. Word has length 33 [2021-05-21 20:30:45,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:45,697 INFO L482 AbstractCegarLoop]: Abstraction has 13175 states and 70215 transitions. [2021-05-21 20:30:45,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:45,697 INFO L276 IsEmpty]: Start isEmpty. Operand 13175 states and 70215 transitions. [2021-05-21 20:30:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:45,724 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:45,724 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:45,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-05-21 20:30:45,724 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:45,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:45,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1430152825, now seen corresponding path program 193 times [2021-05-21 20:30:45,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:45,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289286342] [2021-05-21 20:30:45,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:45,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:45,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289286342] [2021-05-21 20:30:45,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289286342] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:45,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:45,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:45,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265396600] [2021-05-21 20:30:45,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:45,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:45,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:45,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:45,862 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) [2021-05-21 20:30:46,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:46,092 INFO L93 Difference]: Finished difference Result 31530 states and 158761 transitions. [2021-05-21 20:30:46,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:46,092 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:46,194 INFO L225 Difference]: With dead ends: 31530 [2021-05-21 20:30:46,194 INFO L226 Difference]: Without dead ends: 30771 [2021-05-21 20:30:46,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 158.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30771 states. [2021-05-21 20:30:47,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30771 to 13419. [2021-05-21 20:30:47,370 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) [2021-05-21 20:30:47,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71439 transitions. [2021-05-21 20:30:47,414 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71439 transitions. Word has length 33 [2021-05-21 20:30:47,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:47,414 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71439 transitions. [2021-05-21 20:30:47,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71439 transitions. [2021-05-21 20:30:47,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:47,444 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:47,444 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:47,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-05-21 20:30:47,444 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:47,444 INFO L82 PathProgramCache]: Analyzing trace with hash 634125945, now seen corresponding path program 194 times [2021-05-21 20:30:47,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:47,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913087065] [2021-05-21 20:30:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:47,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:47,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913087065] [2021-05-21 20:30:47,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913087065] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:47,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:47,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:47,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628701420] [2021-05-21 20:30:47,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:47,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:47,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:47,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:47,582 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) [2021-05-21 20:30:47,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:47,810 INFO L93 Difference]: Finished difference Result 31506 states and 158557 transitions. [2021-05-21 20:30:47,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:47,810 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:47,912 INFO L225 Difference]: With dead ends: 31506 [2021-05-21 20:30:47,912 INFO L226 Difference]: Without dead ends: 30659 [2021-05-21 20:30:47,912 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 [2021-05-21 20:30:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30659 states. [2021-05-21 20:30:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30659 to 13307. [2021-05-21 20:30:49,089 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) [2021-05-21 20:30:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70919 transitions. [2021-05-21 20:30:49,131 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70919 transitions. Word has length 33 [2021-05-21 20:30:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:49,131 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70919 transitions. [2021-05-21 20:30:49,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70919 transitions. [2021-05-21 20:30:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:49,158 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:49,159 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:49,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-05-21 20:30:49,159 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:49,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:49,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1004176859, now seen corresponding path program 195 times [2021-05-21 20:30:49,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:49,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941077071] [2021-05-21 20:30:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:49,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:49,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941077071] [2021-05-21 20:30:49,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941077071] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:49,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:49,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:49,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855924726] [2021-05-21 20:30:49,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:49,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:49,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:49,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:49,313 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) [2021-05-21 20:30:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:49,668 INFO L93 Difference]: Finished difference Result 31765 states and 159764 transitions. [2021-05-21 20:30:49,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:49,668 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:49,771 INFO L225 Difference]: With dead ends: 31765 [2021-05-21 20:30:49,772 INFO L226 Difference]: Without dead ends: 31006 [2021-05-21 20:30:49,772 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 [2021-05-21 20:30:50,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31006 states. [2021-05-21 20:30:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31006 to 13495. [2021-05-21 20:30:50,805 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) [2021-05-21 20:30:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 71743 transitions. [2021-05-21 20:30:50,847 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 71743 transitions. Word has length 33 [2021-05-21 20:30:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:50,847 INFO L482 AbstractCegarLoop]: Abstraction has 13495 states and 71743 transitions. [2021-05-21 20:30:50,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:50,848 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 71743 transitions. [2021-05-21 20:30:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:50,875 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:50,875 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:50,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-05-21 20:30:50,875 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:50,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:50,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1433878137, now seen corresponding path program 196 times [2021-05-21 20:30:50,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:50,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400651870] [2021-05-21 20:30:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:51,150 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-21 20:30:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:51,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:51,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400651870] [2021-05-21 20:30:51,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400651870] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:51,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:51,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:51,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663551916] [2021-05-21 20:30:51,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:51,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:51,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:51,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:51,152 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) [2021-05-21 20:30:51,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:51,377 INFO L93 Difference]: Finished difference Result 31900 states and 160235 transitions. [2021-05-21 20:30:51,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:51,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:51,472 INFO L225 Difference]: With dead ends: 31900 [2021-05-21 20:30:51,472 INFO L226 Difference]: Without dead ends: 30818 [2021-05-21 20:30:51,472 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 282.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:52,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30818 states. [2021-05-21 20:30:52,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30818 to 13307. [2021-05-21 20:30:52,517 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) [2021-05-21 20:30:52,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70831 transitions. [2021-05-21 20:30:52,718 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70831 transitions. Word has length 33 [2021-05-21 20:30:52,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:52,718 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70831 transitions. [2021-05-21 20:30:52,718 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) [2021-05-21 20:30:52,719 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70831 transitions. [2021-05-21 20:30:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:52,746 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:52,746 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] [2021-05-21 20:30:52,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-05-21 20:30:52,746 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:52,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:52,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2067084921, now seen corresponding path program 197 times [2021-05-21 20:30:52,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:52,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328399915] [2021-05-21 20:30:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:52,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:52,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328399915] [2021-05-21 20:30:52,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328399915] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:52,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:52,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:52,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434430364] [2021-05-21 20:30:52,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:52,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:52,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:52,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:52,893 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) [2021-05-21 20:30:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:53,115 INFO L93 Difference]: Finished difference Result 31705 states and 159440 transitions. [2021-05-21 20:30:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:53,115 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 [2021-05-21 20:30:53,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:53,213 INFO L225 Difference]: With dead ends: 31705 [2021-05-21 20:30:53,213 INFO L226 Difference]: Without dead ends: 30970 [2021-05-21 20:30:53,213 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 [2021-05-21 20:30:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30970 states. [2021-05-21 20:30:54,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30970 to 13483. [2021-05-21 20:30:54,361 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) [2021-05-21 20:30:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71615 transitions. [2021-05-21 20:30:54,405 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71615 transitions. Word has length 33 [2021-05-21 20:30:54,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:54,405 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71615 transitions. [2021-05-21 20:30:54,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71615 transitions. [2021-05-21 20:30:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:54,434 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:54,434 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:30:54,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-05-21 20:30:54,434 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:54,434 INFO L82 PathProgramCache]: Analyzing trace with hash 2142619227, now seen corresponding path program 198 times [2021-05-21 20:30:54,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:54,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361355099] [2021-05-21 20:30:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:54,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:54,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361355099] [2021-05-21 20:30:54,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361355099] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:54,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:54,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:54,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553865382] [2021-05-21 20:30:54,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:54,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:54,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:54,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:54,583 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) [2021-05-21 20:30:54,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:54,805 INFO L93 Difference]: Finished difference Result 31864 states and 160015 transitions. [2021-05-21 20:30:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:54,806 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:54,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:54,904 INFO L225 Difference]: With dead ends: 31864 [2021-05-21 20:30:54,904 INFO L226 Difference]: Without dead ends: 30706 [2021-05-21 20:30:54,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 154.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:55,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30706 states. [2021-05-21 20:30:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30706 to 13219. [2021-05-21 20:30:56,054 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) [2021-05-21 20:30:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70439 transitions. [2021-05-21 20:30:56,096 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70439 transitions. Word has length 33 [2021-05-21 20:30:56,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:56,097 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70439 transitions. [2021-05-21 20:30:56,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:30:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70439 transitions. [2021-05-21 20:30:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:56,125 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:56,125 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] [2021-05-21 20:30:56,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-05-21 20:30:56,125 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:56,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:56,125 INFO L82 PathProgramCache]: Analyzing trace with hash -715624101, now seen corresponding path program 199 times [2021-05-21 20:30:56,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:56,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284109555] [2021-05-21 20:30:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:56,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:56,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284109555] [2021-05-21 20:30:56,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284109555] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:56,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:56,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:56,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18471624] [2021-05-21 20:30:56,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:56,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:56,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:56,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:56,252 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) [2021-05-21 20:30:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:56,474 INFO L93 Difference]: Finished difference Result 31239 states and 157318 transitions. [2021-05-21 20:30:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:56,475 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:56,573 INFO L225 Difference]: With dead ends: 31239 [2021-05-21 20:30:56,573 INFO L226 Difference]: Without dead ends: 30480 [2021-05-21 20:30:56,573 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:57,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30480 states. [2021-05-21 20:30:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30480 to 13387. [2021-05-21 20:30:57,708 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) [2021-05-21 20:30:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71219 transitions. [2021-05-21 20:30:57,749 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71219 transitions. Word has length 33 [2021-05-21 20:30:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:57,749 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71219 transitions. [2021-05-21 20:30:57,749 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) [2021-05-21 20:30:57,749 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71219 transitions. [2021-05-21 20:30:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:57,777 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:57,777 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] [2021-05-21 20:30:57,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-05-21 20:30:57,777 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:57,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:57,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1511650981, now seen corresponding path program 200 times [2021-05-21 20:30:57,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:57,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557260757] [2021-05-21 20:30:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:57,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:57,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557260757] [2021-05-21 20:30:57,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557260757] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:57,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:57,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:57,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410836319] [2021-05-21 20:30:57,907 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:57,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:57,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:57,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:57,908 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) [2021-05-21 20:30:58,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:58,151 INFO L93 Difference]: Finished difference Result 31215 states and 157114 transitions. [2021-05-21 20:30:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:58,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:30:58,248 INFO L225 Difference]: With dead ends: 31215 [2021-05-21 20:30:58,248 INFO L226 Difference]: Without dead ends: 30368 [2021-05-21 20:30:58,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:30:59,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30368 states. [2021-05-21 20:30:59,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30368 to 13275. [2021-05-21 20:30:59,388 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) [2021-05-21 20:30:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70699 transitions. [2021-05-21 20:30:59,429 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70699 transitions. Word has length 33 [2021-05-21 20:30:59,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:30:59,429 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70699 transitions. [2021-05-21 20:30:59,429 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) [2021-05-21 20:30:59,429 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70699 transitions. [2021-05-21 20:30:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:30:59,455 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:30:59,456 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] [2021-05-21 20:30:59,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-05-21 20:30:59,456 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:30:59,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:30:59,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1760135973, now seen corresponding path program 201 times [2021-05-21 20:30:59,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:30:59,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613076608] [2021-05-21 20:30:59,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:30:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:30:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:30:59,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:30:59,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613076608] [2021-05-21 20:30:59,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613076608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:30:59,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:30:59,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:30:59,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890869467] [2021-05-21 20:30:59,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:30:59,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:30:59,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:30:59,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:30:59,609 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) [2021-05-21 20:30:59,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:30:59,975 INFO L93 Difference]: Finished difference Result 31279 states and 157418 transitions. [2021-05-21 20:30:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:30:59,975 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:30:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:00,079 INFO L225 Difference]: With dead ends: 31279 [2021-05-21 20:31:00,079 INFO L226 Difference]: Without dead ends: 30520 [2021-05-21 20:31:00,079 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 [2021-05-21 20:31:00,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30520 states. [2021-05-21 20:31:01,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30520 to 13399. [2021-05-21 20:31:01,101 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) [2021-05-21 20:31:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13399 states to 13399 states and 71203 transitions. [2021-05-21 20:31:01,144 INFO L78 Accepts]: Start accepts. Automaton has 13399 states and 71203 transitions. Word has length 33 [2021-05-21 20:31:01,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:01,144 INFO L482 AbstractCegarLoop]: Abstraction has 13399 states and 71203 transitions. [2021-05-21 20:31:01,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:01,144 INFO L276 IsEmpty]: Start isEmpty. Operand 13399 states and 71203 transitions. [2021-05-21 20:31:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:01,171 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:01,171 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:01,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-05-21 20:31:01,171 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:01,171 INFO L82 PathProgramCache]: Analyzing trace with hash -980050311, now seen corresponding path program 202 times [2021-05-21 20:31:01,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:01,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681498721] [2021-05-21 20:31:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:01,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:01,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681498721] [2021-05-21 20:31:01,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681498721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:01,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:01,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:01,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254461091] [2021-05-21 20:31:01,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:01,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:01,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:01,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:01,299 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) [2021-05-21 20:31:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:01,660 INFO L93 Difference]: Finished difference Result 31283 states and 157306 transitions. [2021-05-21 20:31:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:01,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:01,767 INFO L225 Difference]: With dead ends: 31283 [2021-05-21 20:31:01,767 INFO L226 Difference]: Without dead ends: 30396 [2021-05-21 20:31:01,767 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30396 states. [2021-05-21 20:31:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30396 to 13275. [2021-05-21 20:31:02,796 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) [2021-05-21 20:31:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70643 transitions. [2021-05-21 20:31:03,011 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70643 transitions. Word has length 33 [2021-05-21 20:31:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:03,011 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70643 transitions. [2021-05-21 20:31:03,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70643 transitions. [2021-05-21 20:31:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:03,040 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:03,040 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] [2021-05-21 20:31:03,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-05-21 20:31:03,041 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:03,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:03,041 INFO L82 PathProgramCache]: Analyzing trace with hash -717130119, now seen corresponding path program 203 times [2021-05-21 20:31:03,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:03,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027196540] [2021-05-21 20:31:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:03,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:03,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027196540] [2021-05-21 20:31:03,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027196540] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:03,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:03,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:03,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332304121] [2021-05-21 20:31:03,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:03,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:03,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:03,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:03,175 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) [2021-05-21 20:31:03,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:03,399 INFO L93 Difference]: Finished difference Result 31219 states and 157126 transitions. [2021-05-21 20:31:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:03,399 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 [2021-05-21 20:31:03,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:03,496 INFO L225 Difference]: With dead ends: 31219 [2021-05-21 20:31:03,496 INFO L226 Difference]: Without dead ends: 30484 [2021-05-21 20:31:03,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 155.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30484 states. [2021-05-21 20:31:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30484 to 13387. [2021-05-21 20:31:04,667 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) [2021-05-21 20:31:04,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71107 transitions. [2021-05-21 20:31:04,709 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71107 transitions. Word has length 33 [2021-05-21 20:31:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:04,709 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71107 transitions. [2021-05-21 20:31:04,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71107 transitions. [2021-05-21 20:31:04,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:04,736 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:04,736 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:04,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-05-21 20:31:04,736 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:04,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:04,736 INFO L82 PathProgramCache]: Analyzing trace with hash -2027711141, now seen corresponding path program 204 times [2021-05-21 20:31:04,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:04,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808477437] [2021-05-21 20:31:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:04,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:04,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808477437] [2021-05-21 20:31:04,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808477437] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:04,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:04,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:04,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557484158] [2021-05-21 20:31:04,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:04,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:04,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:04,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:04,876 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) [2021-05-21 20:31:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:05,095 INFO L93 Difference]: Finished difference Result 31247 states and 157118 transitions. [2021-05-21 20:31:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:05,095 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:05,190 INFO L225 Difference]: With dead ends: 31247 [2021-05-21 20:31:05,190 INFO L226 Difference]: Without dead ends: 30316 [2021-05-21 20:31:05,191 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 [2021-05-21 20:31:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30316 states. [2021-05-21 20:31:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30316 to 13219. [2021-05-21 20:31:06,328 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) [2021-05-21 20:31:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70411 transitions. [2021-05-21 20:31:06,369 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70411 transitions. Word has length 33 [2021-05-21 20:31:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:06,369 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70411 transitions. [2021-05-21 20:31:06,369 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) [2021-05-21 20:31:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70411 transitions. [2021-05-21 20:31:06,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:06,396 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:06,396 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] [2021-05-21 20:31:06,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-05-21 20:31:06,397 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:06,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:06,397 INFO L82 PathProgramCache]: Analyzing trace with hash -538025027, now seen corresponding path program 205 times [2021-05-21 20:31:06,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:06,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147459841] [2021-05-21 20:31:06,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:06,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:06,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:06,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147459841] [2021-05-21 20:31:06,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147459841] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:06,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:06,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:06,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173143711] [2021-05-21 20:31:06,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:06,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:06,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:06,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:06,536 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) [2021-05-21 20:31:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:06,787 INFO L93 Difference]: Finished difference Result 31825 states and 159992 transitions. [2021-05-21 20:31:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:06,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:06,887 INFO L225 Difference]: With dead ends: 31825 [2021-05-21 20:31:06,887 INFO L226 Difference]: Without dead ends: 31066 [2021-05-21 20:31:06,887 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 [2021-05-21 20:31:07,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31066 states. [2021-05-21 20:31:08,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31066 to 13501. [2021-05-21 20:31:08,268 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) [2021-05-21 20:31:08,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13501 states to 13501 states and 71756 transitions. [2021-05-21 20:31:08,326 INFO L78 Accepts]: Start accepts. Automaton has 13501 states and 71756 transitions. Word has length 33 [2021-05-21 20:31:08,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:08,326 INFO L482 AbstractCegarLoop]: Abstraction has 13501 states and 71756 transitions. [2021-05-21 20:31:08,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:08,326 INFO L276 IsEmpty]: Start isEmpty. Operand 13501 states and 71756 transitions. [2021-05-21 20:31:08,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:08,355 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:08,355 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] [2021-05-21 20:31:08,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-05-21 20:31:08,356 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:08,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:08,356 INFO L82 PathProgramCache]: Analyzing trace with hash -108323749, now seen corresponding path program 206 times [2021-05-21 20:31:08,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:08,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367043664] [2021-05-21 20:31:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:08,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:08,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367043664] [2021-05-21 20:31:08,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367043664] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:08,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:08,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:08,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792022147] [2021-05-21 20:31:08,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:08,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:08,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:08,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:08,525 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) [2021-05-21 20:31:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:08,747 INFO L93 Difference]: Finished difference Result 31960 states and 160463 transitions. [2021-05-21 20:31:08,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:08,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:08,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:08,851 INFO L225 Difference]: With dead ends: 31960 [2021-05-21 20:31:08,852 INFO L226 Difference]: Without dead ends: 30878 [2021-05-21 20:31:08,852 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 [2021-05-21 20:31:09,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30878 states. [2021-05-21 20:31:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30878 to 13313. [2021-05-21 20:31:10,093 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) [2021-05-21 20:31:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70838 transitions. [2021-05-21 20:31:10,135 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70838 transitions. Word has length 33 [2021-05-21 20:31:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:10,135 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70838 transitions. [2021-05-21 20:31:10,135 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) [2021-05-21 20:31:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70838 transitions. [2021-05-21 20:31:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:10,162 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:10,162 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:10,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-05-21 20:31:10,162 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:10,162 INFO L82 PathProgramCache]: Analyzing trace with hash -53054309, now seen corresponding path program 207 times [2021-05-21 20:31:10,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:10,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004172593] [2021-05-21 20:31:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:10,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:10,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004172593] [2021-05-21 20:31:10,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004172593] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:10,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:10,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:10,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320714568] [2021-05-21 20:31:10,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:10,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:10,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:10,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:10,291 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) [2021-05-21 20:31:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:10,526 INFO L93 Difference]: Finished difference Result 31630 states and 158995 transitions. [2021-05-21 20:31:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:10,526 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:10,803 INFO L225 Difference]: With dead ends: 31630 [2021-05-21 20:31:10,803 INFO L226 Difference]: Without dead ends: 30871 [2021-05-21 20:31:10,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30871 states. [2021-05-21 20:31:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30871 to 13437. [2021-05-21 20:31:11,826 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) [2021-05-21 20:31:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13437 states to 13437 states and 71342 transitions. [2021-05-21 20:31:11,868 INFO L78 Accepts]: Start accepts. Automaton has 13437 states and 71342 transitions. Word has length 33 [2021-05-21 20:31:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:11,868 INFO L482 AbstractCegarLoop]: Abstraction has 13437 states and 71342 transitions. [2021-05-21 20:31:11,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 13437 states and 71342 transitions. [2021-05-21 20:31:11,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:11,895 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:11,895 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:11,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-05-21 20:31:11,896 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:11,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:11,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1973906779, now seen corresponding path program 208 times [2021-05-21 20:31:11,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:11,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247589605] [2021-05-21 20:31:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:12,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:12,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247589605] [2021-05-21 20:31:12,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247589605] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:12,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:12,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:12,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525832121] [2021-05-21 20:31:12,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:12,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:12,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:12,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:12,023 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) [2021-05-21 20:31:12,283 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2021-05-21 20:31:12,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:12,392 INFO L93 Difference]: Finished difference Result 31634 states and 158883 transitions. [2021-05-21 20:31:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:12,393 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 [2021-05-21 20:31:12,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:12,495 INFO L225 Difference]: With dead ends: 31634 [2021-05-21 20:31:12,495 INFO L226 Difference]: Without dead ends: 30747 [2021-05-21 20:31:12,495 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 290.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30747 states. [2021-05-21 20:31:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30747 to 13313. [2021-05-21 20:31:13,531 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) [2021-05-21 20:31:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13313 states to 13313 states and 70776 transitions. [2021-05-21 20:31:13,750 INFO L78 Accepts]: Start accepts. Automaton has 13313 states and 70776 transitions. Word has length 33 [2021-05-21 20:31:13,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:13,750 INFO L482 AbstractCegarLoop]: Abstraction has 13313 states and 70776 transitions. [2021-05-21 20:31:13,750 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) [2021-05-21 20:31:13,750 INFO L276 IsEmpty]: Start isEmpty. Operand 13313 states and 70776 transitions. [2021-05-21 20:31:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:13,781 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:13,781 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] [2021-05-21 20:31:13,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-05-21 20:31:13,781 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:13,781 INFO L82 PathProgramCache]: Analyzing trace with hash -2065279367, now seen corresponding path program 209 times [2021-05-21 20:31:13,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:13,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973673299] [2021-05-21 20:31:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:13,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:13,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973673299] [2021-05-21 20:31:13,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973673299] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:13,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:13,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:13,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405515906] [2021-05-21 20:31:13,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:13,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:13,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:13,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:13,910 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) [2021-05-21 20:31:14,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:14,150 INFO L93 Difference]: Finished difference Result 31966 states and 160450 transitions. [2021-05-21 20:31:14,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:14,150 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:14,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:14,250 INFO L225 Difference]: With dead ends: 31966 [2021-05-21 20:31:14,250 INFO L226 Difference]: Without dead ends: 31072 [2021-05-21 20:31:14,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 134.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:14,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31072 states. [2021-05-21 20:31:15,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31072 to 13503. [2021-05-21 20:31:15,443 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) [2021-05-21 20:31:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13503 states to 13503 states and 71541 transitions. [2021-05-21 20:31:15,486 INFO L78 Accepts]: Start accepts. Automaton has 13503 states and 71541 transitions. Word has length 33 [2021-05-21 20:31:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:15,486 INFO L482 AbstractCegarLoop]: Abstraction has 13503 states and 71541 transitions. [2021-05-21 20:31:15,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 13503 states and 71541 transitions. [2021-05-21 20:31:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:15,514 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:15,514 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:15,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-05-21 20:31:15,514 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:15,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1055728219, now seen corresponding path program 210 times [2021-05-21 20:31:15,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:15,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948221522] [2021-05-21 20:31:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:15,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:15,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948221522] [2021-05-21 20:31:15,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948221522] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:15,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:15,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:15,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532910847] [2021-05-21 20:31:15,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:15,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:15,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:15,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:15,643 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) [2021-05-21 20:31:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:15,876 INFO L93 Difference]: Finished difference Result 31835 states and 159677 transitions. [2021-05-21 20:31:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:15,876 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 [2021-05-21 20:31:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:15,975 INFO L225 Difference]: With dead ends: 31835 [2021-05-21 20:31:15,975 INFO L226 Difference]: Without dead ends: 30788 [2021-05-21 20:31:15,975 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30788 states. [2021-05-21 20:31:17,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30788 to 13219. [2021-05-21 20:31:17,121 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) [2021-05-21 20:31:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70367 transitions. [2021-05-21 20:31:17,163 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70367 transitions. Word has length 33 [2021-05-21 20:31:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:17,163 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70367 transitions. [2021-05-21 20:31:17,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70367 transitions. [2021-05-21 20:31:17,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:17,191 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:17,191 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:17,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-05-21 20:31:17,191 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:17,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:17,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1691185543, now seen corresponding path program 211 times [2021-05-21 20:31:17,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:17,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386686756] [2021-05-21 20:31:17,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:17,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:17,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386686756] [2021-05-21 20:31:17,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386686756] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:17,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:17,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:17,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385556322] [2021-05-21 20:31:17,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:17,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:17,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:17,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:17,341 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) [2021-05-21 20:31:17,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:17,562 INFO L93 Difference]: Finished difference Result 31711 states and 159487 transitions. [2021-05-21 20:31:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:17,562 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 [2021-05-21 20:31:17,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:17,662 INFO L225 Difference]: With dead ends: 31711 [2021-05-21 20:31:17,662 INFO L226 Difference]: Without dead ends: 30976 [2021-05-21 20:31:17,662 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 [2021-05-21 20:31:18,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30976 states. [2021-05-21 20:31:18,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30976 to 13483. [2021-05-21 20:31:18,862 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) [2021-05-21 20:31:18,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71643 transitions. [2021-05-21 20:31:18,905 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71643 transitions. Word has length 33 [2021-05-21 20:31:18,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:18,905 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71643 transitions. [2021-05-21 20:31:18,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:18,905 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71643 transitions. [2021-05-21 20:31:18,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:18,932 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:18,932 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:18,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-05-21 20:31:18,932 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:18,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1615651237, now seen corresponding path program 212 times [2021-05-21 20:31:18,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:18,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186280082] [2021-05-21 20:31:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:19,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:19,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186280082] [2021-05-21 20:31:19,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186280082] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:19,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:19,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:19,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120875366] [2021-05-21 20:31:19,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:19,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:19,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:19,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:19,079 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) [2021-05-21 20:31:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:19,293 INFO L93 Difference]: Finished difference Result 31870 states and 160062 transitions. [2021-05-21 20:31:19,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:19,293 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:19,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:19,391 INFO L225 Difference]: With dead ends: 31870 [2021-05-21 20:31:19,391 INFO L226 Difference]: Without dead ends: 30800 [2021-05-21 20:31:19,391 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30800 states. [2021-05-21 20:31:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30800 to 13307. [2021-05-21 20:31:20,581 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) [2021-05-21 20:31:20,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70771 transitions. [2021-05-21 20:31:20,622 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70771 transitions. Word has length 33 [2021-05-21 20:31:20,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:20,623 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70771 transitions. [2021-05-21 20:31:20,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:20,623 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70771 transitions. [2021-05-21 20:31:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:20,650 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:20,650 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:20,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-05-21 20:31:20,650 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:20,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:20,650 INFO L82 PathProgramCache]: Analyzing trace with hash -290068005, now seen corresponding path program 213 times [2021-05-21 20:31:20,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:20,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088310721] [2021-05-21 20:31:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:20,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:20,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:20,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088310721] [2021-05-21 20:31:20,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088310721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:20,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:20,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:20,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883617440] [2021-05-21 20:31:20,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:20,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:20,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:20,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:20,799 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) [2021-05-21 20:31:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:21,182 INFO L93 Difference]: Finished difference Result 31516 states and 158496 transitions. [2021-05-21 20:31:21,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:21,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:21,284 INFO L225 Difference]: With dead ends: 31516 [2021-05-21 20:31:21,284 INFO L226 Difference]: Without dead ends: 30781 [2021-05-21 20:31:21,284 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 171.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30781 states. [2021-05-21 20:31:22,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30781 to 13419. [2021-05-21 20:31:22,300 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) [2021-05-21 20:31:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71235 transitions. [2021-05-21 20:31:22,342 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71235 transitions. Word has length 33 [2021-05-21 20:31:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:22,342 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71235 transitions. [2021-05-21 20:31:22,342 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) [2021-05-21 20:31:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71235 transitions. [2021-05-21 20:31:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:22,369 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:22,369 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:22,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-05-21 20:31:22,369 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:22,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:22,369 INFO L82 PathProgramCache]: Analyzing trace with hash 656330075, now seen corresponding path program 214 times [2021-05-21 20:31:22,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:22,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758401991] [2021-05-21 20:31:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:22,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:22,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758401991] [2021-05-21 20:31:22,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758401991] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:22,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:22,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:22,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414191275] [2021-05-21 20:31:22,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:22,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:22,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:22,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:22,520 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) [2021-05-21 20:31:22,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:22,867 INFO L93 Difference]: Finished difference Result 31544 states and 158488 transitions. [2021-05-21 20:31:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:22,867 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 [2021-05-21 20:31:22,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:22,969 INFO L225 Difference]: With dead ends: 31544 [2021-05-21 20:31:22,969 INFO L226 Difference]: Without dead ends: 30669 [2021-05-21 20:31:22,970 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:23,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30669 states. [2021-05-21 20:31:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30669 to 13307. [2021-05-21 20:31:24,020 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) [2021-05-21 20:31:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70715 transitions. [2021-05-21 20:31:24,250 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70715 transitions. Word has length 33 [2021-05-21 20:31:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:24,250 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70715 transitions. [2021-05-21 20:31:24,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70715 transitions. [2021-05-21 20:31:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:24,279 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:24,279 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] [2021-05-21 20:31:24,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-05-21 20:31:24,279 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:24,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:24,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1636371645, now seen corresponding path program 215 times [2021-05-21 20:31:24,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:24,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673253524] [2021-05-21 20:31:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:24,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:24,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673253524] [2021-05-21 20:31:24,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673253524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:24,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:24,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:24,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701928000] [2021-05-21 20:31:24,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:24,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:24,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:24,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:24,435 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) [2021-05-21 20:31:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:24,658 INFO L93 Difference]: Finished difference Result 31912 states and 160193 transitions. [2021-05-21 20:31:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:24,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:24,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:24,759 INFO L225 Difference]: With dead ends: 31912 [2021-05-21 20:31:24,759 INFO L226 Difference]: Without dead ends: 31018 [2021-05-21 20:31:24,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:25,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31018 states. [2021-05-21 20:31:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31018 to 13497. [2021-05-21 20:31:25,948 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) [2021-05-21 20:31:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 71480 transitions. [2021-05-21 20:31:25,991 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 71480 transitions. Word has length 33 [2021-05-21 20:31:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:25,991 INFO L482 AbstractCegarLoop]: Abstraction has 13497 states and 71480 transitions. [2021-05-21 20:31:25,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:25,991 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 71480 transitions. [2021-05-21 20:31:26,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:26,019 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:26,019 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:26,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-05-21 20:31:26,019 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:26,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:26,020 INFO L82 PathProgramCache]: Analyzing trace with hash -396640997, now seen corresponding path program 216 times [2021-05-21 20:31:26,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:26,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782649652] [2021-05-21 20:31:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:26,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:26,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782649652] [2021-05-21 20:31:26,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782649652] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:26,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:26,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:26,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272456056] [2021-05-21 20:31:26,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:26,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:26,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:26,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:26,157 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) [2021-05-21 20:31:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:26,400 INFO L93 Difference]: Finished difference Result 31781 states and 159420 transitions. [2021-05-21 20:31:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:26,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:26,498 INFO L225 Difference]: With dead ends: 31781 [2021-05-21 20:31:26,498 INFO L226 Difference]: Without dead ends: 30696 [2021-05-21 20:31:26,498 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 [2021-05-21 20:31:27,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30696 states. [2021-05-21 20:31:27,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30696 to 13175. [2021-05-21 20:31:27,631 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) [2021-05-21 20:31:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13175 states to 13175 states and 70193 transitions. [2021-05-21 20:31:27,672 INFO L78 Accepts]: Start accepts. Automaton has 13175 states and 70193 transitions. Word has length 33 [2021-05-21 20:31:27,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:27,672 INFO L482 AbstractCegarLoop]: Abstraction has 13175 states and 70193 transitions. [2021-05-21 20:31:27,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:27,672 INFO L276 IsEmpty]: Start isEmpty. Operand 13175 states and 70193 transitions. [2021-05-21 20:31:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:27,699 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:27,699 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:27,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-05-21 20:31:27,699 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:27,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:27,700 INFO L82 PathProgramCache]: Analyzing trace with hash 776824663, now seen corresponding path program 217 times [2021-05-21 20:31:27,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:27,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832144309] [2021-05-21 20:31:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:27,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:27,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832144309] [2021-05-21 20:31:27,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832144309] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:27,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:27,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:27,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373570928] [2021-05-21 20:31:27,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:27,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:27,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:27,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:27,840 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) [2021-05-21 20:31:28,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:28,077 INFO L93 Difference]: Finished difference Result 31484 states and 158570 transitions. [2021-05-21 20:31:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:28,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:28,175 INFO L225 Difference]: With dead ends: 31484 [2021-05-21 20:31:28,176 INFO L226 Difference]: Without dead ends: 30733 [2021-05-21 20:31:28,176 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 163.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:29,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30733 states. [2021-05-21 20:31:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30733 to 13419. [2021-05-21 20:31:29,305 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) [2021-05-21 20:31:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71417 transitions. [2021-05-21 20:31:29,346 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71417 transitions. Word has length 33 [2021-05-21 20:31:29,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:29,346 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71417 transitions. [2021-05-21 20:31:29,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:29,346 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71417 transitions. [2021-05-21 20:31:29,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:29,373 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:29,373 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] [2021-05-21 20:31:29,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-05-21 20:31:29,373 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:29,374 INFO L82 PathProgramCache]: Analyzing trace with hash 295922617, now seen corresponding path program 218 times [2021-05-21 20:31:29,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:29,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333662639] [2021-05-21 20:31:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:29,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:29,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333662639] [2021-05-21 20:31:29,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333662639] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:29,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:29,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:29,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646679277] [2021-05-21 20:31:29,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:29,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:29,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:29,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:29,520 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) [2021-05-21 20:31:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:29,740 INFO L93 Difference]: Finished difference Result 31468 states and 158394 transitions. [2021-05-21 20:31:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:29,740 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 [2021-05-21 20:31:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:29,836 INFO L225 Difference]: With dead ends: 31468 [2021-05-21 20:31:29,836 INFO L226 Difference]: Without dead ends: 30621 [2021-05-21 20:31:29,836 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 169.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30621 states. [2021-05-21 20:31:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30621 to 13307. [2021-05-21 20:31:30,971 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) [2021-05-21 20:31:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70897 transitions. [2021-05-21 20:31:31,011 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70897 transitions. Word has length 33 [2021-05-21 20:31:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:31,011 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70897 transitions. [2021-05-21 20:31:31,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70897 transitions. [2021-05-21 20:31:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:31,038 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:31,038 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:31,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-05-21 20:31:31,038 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:31,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:31,039 INFO L82 PathProgramCache]: Analyzing trace with hash 350848697, now seen corresponding path program 219 times [2021-05-21 20:31:31,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:31,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273897913] [2021-05-21 20:31:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:31,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:31,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273897913] [2021-05-21 20:31:31,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273897913] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:31,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:31,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:31,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432094157] [2021-05-21 20:31:31,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:31,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:31,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:31,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:31,190 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) [2021-05-21 20:31:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:31,565 INFO L93 Difference]: Finished difference Result 31715 states and 159557 transitions. [2021-05-21 20:31:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:31,565 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:31,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:31,663 INFO L225 Difference]: With dead ends: 31715 [2021-05-21 20:31:31,663 INFO L226 Difference]: Without dead ends: 30964 [2021-05-21 20:31:31,663 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 [2021-05-21 20:31:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30964 states. [2021-05-21 20:31:32,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30964 to 13491. [2021-05-21 20:31:32,675 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) [2021-05-21 20:31:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71709 transitions. [2021-05-21 20:31:32,717 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71709 transitions. Word has length 33 [2021-05-21 20:31:32,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:32,717 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71709 transitions. [2021-05-21 20:31:32,717 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) [2021-05-21 20:31:32,717 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71709 transitions. [2021-05-21 20:31:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:32,744 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:32,744 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:32,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-05-21 20:31:32,745 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:32,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:32,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2069913273, now seen corresponding path program 220 times [2021-05-21 20:31:32,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:32,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067552752] [2021-05-21 20:31:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:32,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:32,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067552752] [2021-05-21 20:31:32,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067552752] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:32,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:32,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:32,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052989079] [2021-05-21 20:31:32,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:32,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:32,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:32,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:32,898 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) [2021-05-21 20:31:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:33,200 INFO L93 Difference]: Finished difference Result 31858 states and 160060 transitions. [2021-05-21 20:31:33,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:33,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:33,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:33,297 INFO L225 Difference]: With dead ends: 31858 [2021-05-21 20:31:33,298 INFO L226 Difference]: Without dead ends: 30780 [2021-05-21 20:31:33,298 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 158.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30780 states. [2021-05-21 20:31:34,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30780 to 13307. [2021-05-21 20:31:34,337 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) [2021-05-21 20:31:34,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70809 transitions. [2021-05-21 20:31:34,563 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70809 transitions. Word has length 33 [2021-05-21 20:31:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:34,563 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70809 transitions. [2021-05-21 20:31:34,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70809 transitions. [2021-05-21 20:31:34,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:34,596 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:34,596 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:34,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-05-21 20:31:34,596 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:34,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:34,597 INFO L82 PathProgramCache]: Analyzing trace with hash -438537573, now seen corresponding path program 221 times [2021-05-21 20:31:34,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:34,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428818990] [2021-05-21 20:31:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:34,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:34,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428818990] [2021-05-21 20:31:34,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428818990] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:34,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:34,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:34,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380377585] [2021-05-21 20:31:34,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:34,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:34,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:34,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:34,747 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) [2021-05-21 20:31:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:34,968 INFO L93 Difference]: Finished difference Result 31675 states and 159305 transitions. [2021-05-21 20:31:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:34,968 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:34,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:35,065 INFO L225 Difference]: With dead ends: 31675 [2021-05-21 20:31:35,066 INFO L226 Difference]: Without dead ends: 30940 [2021-05-21 20:31:35,066 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 [2021-05-21 20:31:35,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30940 states. [2021-05-21 20:31:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30940 to 13483. [2021-05-21 20:31:36,249 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) [2021-05-21 20:31:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71593 transitions. [2021-05-21 20:31:36,292 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71593 transitions. Word has length 33 [2021-05-21 20:31:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:36,292 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71593 transitions. [2021-05-21 20:31:36,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71593 transitions. [2021-05-21 20:31:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:36,320 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:36,320 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:36,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-05-21 20:31:36,320 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:36,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:36,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1903025913, now seen corresponding path program 222 times [2021-05-21 20:31:36,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:36,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536466898] [2021-05-21 20:31:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:36,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:36,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536466898] [2021-05-21 20:31:36,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536466898] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:36,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:36,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:36,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402128115] [2021-05-21 20:31:36,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:36,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:36,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:36,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:36,476 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) [2021-05-21 20:31:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:36,683 INFO L93 Difference]: Finished difference Result 31834 states and 159880 transitions. [2021-05-21 20:31:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:36,683 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 [2021-05-21 20:31:36,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:36,782 INFO L225 Difference]: With dead ends: 31834 [2021-05-21 20:31:36,783 INFO L226 Difference]: Without dead ends: 30676 [2021-05-21 20:31:36,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30676 states. [2021-05-21 20:31:37,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30676 to 13219. [2021-05-21 20:31:37,933 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) [2021-05-21 20:31:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70417 transitions. [2021-05-21 20:31:37,977 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70417 transitions. Word has length 33 [2021-05-21 20:31:37,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:37,977 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70417 transitions. [2021-05-21 20:31:37,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70417 transitions. [2021-05-21 20:31:38,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:38,006 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:38,006 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:38,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-05-21 20:31:38,006 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:38,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:38,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1368952263, now seen corresponding path program 223 times [2021-05-21 20:31:38,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:38,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202069110] [2021-05-21 20:31:38,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:38,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:38,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202069110] [2021-05-21 20:31:38,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202069110] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:38,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:38,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:38,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507189739] [2021-05-21 20:31:38,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:38,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:38,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:38,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:38,134 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) [2021-05-21 20:31:38,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:38,385 INFO L93 Difference]: Finished difference Result 31193 states and 157127 transitions. [2021-05-21 20:31:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:38,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:38,484 INFO L225 Difference]: With dead ends: 31193 [2021-05-21 20:31:38,484 INFO L226 Difference]: Without dead ends: 30442 [2021-05-21 20:31:38,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:39,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30442 states. [2021-05-21 20:31:39,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30442 to 13387. [2021-05-21 20:31:39,639 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) [2021-05-21 20:31:39,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71197 transitions. [2021-05-21 20:31:39,682 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71197 transitions. Word has length 33 [2021-05-21 20:31:39,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:39,682 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71197 transitions. [2021-05-21 20:31:39,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:39,682 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71197 transitions. [2021-05-21 20:31:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:39,709 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:39,710 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:39,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-05-21 20:31:39,710 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:39,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:39,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1849854309, now seen corresponding path program 224 times [2021-05-21 20:31:39,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:39,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417096387] [2021-05-21 20:31:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:39,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:39,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417096387] [2021-05-21 20:31:39,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417096387] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:39,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:39,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:39,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947168426] [2021-05-21 20:31:39,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:39,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:39,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:39,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:39,840 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) [2021-05-21 20:31:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:40,063 INFO L93 Difference]: Finished difference Result 31177 states and 156951 transitions. [2021-05-21 20:31:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:40,064 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:40,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:40,160 INFO L225 Difference]: With dead ends: 31177 [2021-05-21 20:31:40,161 INFO L226 Difference]: Without dead ends: 30330 [2021-05-21 20:31:40,161 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:41,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30330 states. [2021-05-21 20:31:41,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30330 to 13275. [2021-05-21 20:31:41,360 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) [2021-05-21 20:31:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70677 transitions. [2021-05-21 20:31:41,402 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70677 transitions. Word has length 33 [2021-05-21 20:31:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:41,402 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70677 transitions. [2021-05-21 20:31:41,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70677 transitions. [2021-05-21 20:31:41,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:41,430 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:41,430 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:41,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-05-21 20:31:41,430 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:41,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:41,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1881503161, now seen corresponding path program 225 times [2021-05-21 20:31:41,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:41,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107513410] [2021-05-21 20:31:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:41,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:41,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107513410] [2021-05-21 20:31:41,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107513410] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:41,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:41,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:41,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474857485] [2021-05-21 20:31:41,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:41,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:41,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:41,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:41,556 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) [2021-05-21 20:31:41,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:41,792 INFO L93 Difference]: Finished difference Result 31229 states and 157211 transitions. [2021-05-21 20:31:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:41,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:42,080 INFO L225 Difference]: With dead ends: 31229 [2021-05-21 20:31:42,080 INFO L226 Difference]: Without dead ends: 30478 [2021-05-21 20:31:42,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:42,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30478 states. [2021-05-21 20:31:43,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30478 to 13395. [2021-05-21 20:31:43,105 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) [2021-05-21 20:31:43,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 71169 transitions. [2021-05-21 20:31:43,147 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 71169 transitions. Word has length 33 [2021-05-21 20:31:43,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:43,147 INFO L482 AbstractCegarLoop]: Abstraction has 13395 states and 71169 transitions. [2021-05-21 20:31:43,147 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) [2021-05-21 20:31:43,147 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 71169 transitions. [2021-05-21 20:31:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:43,175 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:43,175 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] [2021-05-21 20:31:43,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-05-21 20:31:43,175 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:43,175 INFO L82 PathProgramCache]: Analyzing trace with hash -2100417095, now seen corresponding path program 226 times [2021-05-21 20:31:43,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:43,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969129383] [2021-05-21 20:31:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:43,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:43,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969129383] [2021-05-21 20:31:43,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969129383] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:43,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:43,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:43,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119128260] [2021-05-21 20:31:43,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:43,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:43,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:43,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:43,308 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) [2021-05-21 20:31:43,569 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2021-05-21 20:31:43,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:43,685 INFO L93 Difference]: Finished difference Result 31241 states and 157131 transitions. [2021-05-21 20:31:43,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:43,685 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 [2021-05-21 20:31:43,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:43,784 INFO L225 Difference]: With dead ends: 31241 [2021-05-21 20:31:43,784 INFO L226 Difference]: Without dead ends: 30358 [2021-05-21 20:31:43,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 296.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:44,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30358 states. [2021-05-21 20:31:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30358 to 13275. [2021-05-21 20:31:44,822 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) [2021-05-21 20:31:44,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 70621 transitions. [2021-05-21 20:31:44,864 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 70621 transitions. Word has length 33 [2021-05-21 20:31:44,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:44,864 INFO L482 AbstractCegarLoop]: Abstraction has 13275 states and 70621 transitions. [2021-05-21 20:31:44,864 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) [2021-05-21 20:31:44,864 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 70621 transitions. [2021-05-21 20:31:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:44,992 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:44,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:44,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-05-21 20:31:44,992 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:44,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:44,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1092116891, now seen corresponding path program 227 times [2021-05-21 20:31:44,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:44,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675876674] [2021-05-21 20:31:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:45,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:45,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675876674] [2021-05-21 20:31:45,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675876674] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:45,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:45,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:45,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772969552] [2021-05-21 20:31:45,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:45,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:45,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:45,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:45,135 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) [2021-05-21 20:31:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:45,384 INFO L93 Difference]: Finished difference Result 31189 states and 156991 transitions. [2021-05-21 20:31:45,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:45,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:45,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:45,483 INFO L225 Difference]: With dead ends: 31189 [2021-05-21 20:31:45,483 INFO L226 Difference]: Without dead ends: 30454 [2021-05-21 20:31:45,483 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 [2021-05-21 20:31:46,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30454 states. [2021-05-21 20:31:46,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30454 to 13387. [2021-05-21 20:31:46,645 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) [2021-05-21 20:31:46,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 71085 transitions. [2021-05-21 20:31:46,688 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 71085 transitions. Word has length 33 [2021-05-21 20:31:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:46,688 INFO L482 AbstractCegarLoop]: Abstraction has 13387 states and 71085 transitions. [2021-05-21 20:31:46,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 71085 transitions. [2021-05-21 20:31:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:46,716 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:46,716 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:46,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-05-21 20:31:46,716 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:46,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:46,716 INFO L82 PathProgramCache]: Analyzing trace with hash -881189127, now seen corresponding path program 228 times [2021-05-21 20:31:46,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:46,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659947225] [2021-05-21 20:31:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:46,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:46,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659947225] [2021-05-21 20:31:46,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659947225] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:46,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:46,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:46,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195254902] [2021-05-21 20:31:46,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:46,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:46,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:46,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:46,857 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) [2021-05-21 20:31:47,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:47,082 INFO L93 Difference]: Finished difference Result 31217 states and 156983 transitions. [2021-05-21 20:31:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:47,083 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 [2021-05-21 20:31:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:47,180 INFO L225 Difference]: With dead ends: 31217 [2021-05-21 20:31:47,181 INFO L226 Difference]: Without dead ends: 30286 [2021-05-21 20:31:47,181 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 [2021-05-21 20:31:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30286 states. [2021-05-21 20:31:48,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30286 to 13219. [2021-05-21 20:31:48,355 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) [2021-05-21 20:31:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70389 transitions. [2021-05-21 20:31:48,397 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70389 transitions. Word has length 33 [2021-05-21 20:31:48,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:48,397 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70389 transitions. [2021-05-21 20:31:48,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:48,397 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70389 transitions. [2021-05-21 20:31:48,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:48,424 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:48,424 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:48,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-05-21 20:31:48,424 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:48,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1191353189, now seen corresponding path program 229 times [2021-05-21 20:31:48,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:48,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690099572] [2021-05-21 20:31:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:48,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:48,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:48,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690099572] [2021-05-21 20:31:48,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690099572] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:48,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:48,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:48,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680922442] [2021-05-21 20:31:48,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:48,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:48,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:48,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:48,565 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) [2021-05-21 20:31:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:48,788 INFO L93 Difference]: Finished difference Result 31769 states and 159760 transitions. [2021-05-21 20:31:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:48,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:48,887 INFO L225 Difference]: With dead ends: 31769 [2021-05-21 20:31:48,887 INFO L226 Difference]: Without dead ends: 31018 [2021-05-21 20:31:48,887 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 [2021-05-21 20:31:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31018 states. [2021-05-21 20:31:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31018 to 13495. [2021-05-21 20:31:50,037 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) [2021-05-21 20:31:50,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13495 states to 13495 states and 71713 transitions. [2021-05-21 20:31:50,079 INFO L78 Accepts]: Start accepts. Automaton has 13495 states and 71713 transitions. Word has length 33 [2021-05-21 20:31:50,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:50,079 INFO L482 AbstractCegarLoop]: Abstraction has 13495 states and 71713 transitions. [2021-05-21 20:31:50,079 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) [2021-05-21 20:31:50,079 INFO L276 IsEmpty]: Start isEmpty. Operand 13495 states and 71713 transitions. [2021-05-21 20:31:50,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:50,106 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:50,106 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:50,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-05-21 20:31:50,106 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:50,106 INFO L82 PathProgramCache]: Analyzing trace with hash 527711387, now seen corresponding path program 230 times [2021-05-21 20:31:50,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:50,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784603096] [2021-05-21 20:31:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:50,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:50,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784603096] [2021-05-21 20:31:50,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784603096] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:50,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:50,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:50,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306350404] [2021-05-21 20:31:50,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:50,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:50,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:50,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:50,244 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) [2021-05-21 20:31:50,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:50,444 INFO L93 Difference]: Finished difference Result 31912 states and 160263 transitions. [2021-05-21 20:31:50,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:50,444 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 [2021-05-21 20:31:50,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:50,542 INFO L225 Difference]: With dead ends: 31912 [2021-05-21 20:31:50,543 INFO L226 Difference]: Without dead ends: 30834 [2021-05-21 20:31:50,543 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 143.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30834 states. [2021-05-21 20:31:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30834 to 13311. [2021-05-21 20:31:51,727 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) [2021-05-21 20:31:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13311 states to 13311 states and 70809 transitions. [2021-05-21 20:31:51,769 INFO L78 Accepts]: Start accepts. Automaton has 13311 states and 70809 transitions. Word has length 33 [2021-05-21 20:31:51,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:51,769 INFO L482 AbstractCegarLoop]: Abstraction has 13311 states and 70809 transitions. [2021-05-21 20:31:51,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:51,769 INFO L276 IsEmpty]: Start isEmpty. Operand 13311 states and 70809 transitions. [2021-05-21 20:31:51,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:51,796 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:51,796 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:51,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-05-21 20:31:51,796 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:51,796 INFO L82 PathProgramCache]: Analyzing trace with hash -706382471, now seen corresponding path program 231 times [2021-05-21 20:31:51,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:51,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492124452] [2021-05-21 20:31:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:51,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:51,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492124452] [2021-05-21 20:31:51,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492124452] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:51,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:51,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:51,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757303099] [2021-05-21 20:31:51,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:51,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:51,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:51,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:51,923 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) [2021-05-21 20:31:52,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:52,140 INFO L93 Difference]: Finished difference Result 31574 states and 158765 transitions. [2021-05-21 20:31:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:52,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:52,423 INFO L225 Difference]: With dead ends: 31574 [2021-05-21 20:31:52,423 INFO L226 Difference]: Without dead ends: 30823 [2021-05-21 20:31:52,423 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:53,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30823 states. [2021-05-21 20:31:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30823 to 13431. [2021-05-21 20:31:53,425 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) [2021-05-21 20:31:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13431 states to 13431 states and 71301 transitions. [2021-05-21 20:31:53,467 INFO L78 Accepts]: Start accepts. Automaton has 13431 states and 71301 transitions. Word has length 33 [2021-05-21 20:31:53,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:53,467 INFO L482 AbstractCegarLoop]: Abstraction has 13431 states and 71301 transitions. [2021-05-21 20:31:53,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand 13431 states and 71301 transitions. [2021-05-21 20:31:53,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:53,494 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:53,494 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:53,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-05-21 20:31:53,494 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:53,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:53,494 INFO L82 PathProgramCache]: Analyzing trace with hash 853539995, now seen corresponding path program 232 times [2021-05-21 20:31:53,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:53,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076268421] [2021-05-21 20:31:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:53,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:53,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076268421] [2021-05-21 20:31:53,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076268421] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:53,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:53,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:53,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496184179] [2021-05-21 20:31:53,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:53,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:53,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:53,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:53,621 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) [2021-05-21 20:31:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:54,023 INFO L93 Difference]: Finished difference Result 31586 states and 158685 transitions. [2021-05-21 20:31:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:54,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:54,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:54,123 INFO L225 Difference]: With dead ends: 31586 [2021-05-21 20:31:54,123 INFO L226 Difference]: Without dead ends: 30703 [2021-05-21 20:31:54,123 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:54,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30703 states. [2021-05-21 20:31:55,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30703 to 13311. [2021-05-21 20:31:55,177 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) [2021-05-21 20:31:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13311 states to 13311 states and 70749 transitions. [2021-05-21 20:31:55,219 INFO L78 Accepts]: Start accepts. Automaton has 13311 states and 70749 transitions. Word has length 33 [2021-05-21 20:31:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:55,219 INFO L482 AbstractCegarLoop]: Abstraction has 13311 states and 70749 transitions. [2021-05-21 20:31:55,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:55,220 INFO L276 IsEmpty]: Start isEmpty. Operand 13311 states and 70749 transitions. [2021-05-21 20:31:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:55,247 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:55,247 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:55,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-05-21 20:31:55,247 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:55,247 INFO L82 PathProgramCache]: Analyzing trace with hash 718206107, now seen corresponding path program 233 times [2021-05-21 20:31:55,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:55,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864767620] [2021-05-21 20:31:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:55,395 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-05-21 20:31:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:55,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:55,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864767620] [2021-05-21 20:31:55,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864767620] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:55,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:55,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:55,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157280679] [2021-05-21 20:31:55,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:55,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:55,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:55,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:55,496 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) [2021-05-21 20:31:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:55,708 INFO L93 Difference]: Finished difference Result 31930 states and 160294 transitions. [2021-05-21 20:31:55,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:55,708 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:55,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:55,807 INFO L225 Difference]: With dead ends: 31930 [2021-05-21 20:31:55,807 INFO L226 Difference]: Without dead ends: 31036 [2021-05-21 20:31:55,807 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 254.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31036 states. [2021-05-21 20:31:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31036 to 13501. [2021-05-21 20:31:57,000 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) [2021-05-21 20:31:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13501 states to 13501 states and 71514 transitions. [2021-05-21 20:31:57,044 INFO L78 Accepts]: Start accepts. Automaton has 13501 states and 71514 transitions. Word has length 33 [2021-05-21 20:31:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:57,045 INFO L482 AbstractCegarLoop]: Abstraction has 13501 states and 71514 transitions. [2021-05-21 20:31:57,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13501 states and 71514 transitions. [2021-05-21 20:31:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:57,073 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:57,073 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:57,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-05-21 20:31:57,073 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:57,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:57,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1314806535, now seen corresponding path program 234 times [2021-05-21 20:31:57,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:57,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692990615] [2021-05-21 20:31:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:57,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:57,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692990615] [2021-05-21 20:31:57,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692990615] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:57,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:57,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:57,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260652631] [2021-05-21 20:31:57,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:57,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:57,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:57,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:57,210 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) [2021-05-21 20:31:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:57,462 INFO L93 Difference]: Finished difference Result 31799 states and 159521 transitions. [2021-05-21 20:31:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:57,463 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:31:57,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:57,562 INFO L225 Difference]: With dead ends: 31799 [2021-05-21 20:31:57,562 INFO L226 Difference]: Without dead ends: 30754 [2021-05-21 20:31:57,562 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:31:58,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30754 states. [2021-05-21 20:31:58,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30754 to 13219. [2021-05-21 20:31:58,722 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) [2021-05-21 20:31:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 70345 transitions. [2021-05-21 20:31:58,767 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 70345 transitions. Word has length 33 [2021-05-21 20:31:58,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:31:58,767 INFO L482 AbstractCegarLoop]: Abstraction has 13219 states and 70345 transitions. [2021-05-21 20:31:58,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:31:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 70345 transitions. [2021-05-21 20:31:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:31:58,794 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:31:58,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:31:58,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-05-21 20:31:58,794 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:31:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:31:58,794 INFO L82 PathProgramCache]: Analyzing trace with hash -2081335299, now seen corresponding path program 235 times [2021-05-21 20:31:58,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:31:58,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789211120] [2021-05-21 20:31:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:31:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:31:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:31:58,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:31:58,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789211120] [2021-05-21 20:31:58,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789211120] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:31:58,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:31:58,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:31:58,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242760226] [2021-05-21 20:31:58,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:31:58,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:31:58,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:31:58,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:31:58,957 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) [2021-05-21 20:31:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:31:59,189 INFO L93 Difference]: Finished difference Result 31693 states and 159396 transitions. [2021-05-21 20:31:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:31:59,189 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 [2021-05-21 20:31:59,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:31:59,287 INFO L225 Difference]: With dead ends: 31693 [2021-05-21 20:31:59,287 INFO L226 Difference]: Without dead ends: 30958 [2021-05-21 20:31:59,287 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 184.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30958 states. [2021-05-21 20:32:00,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30958 to 13483. [2021-05-21 20:32:00,439 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) [2021-05-21 20:32:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13483 states to 13483 states and 71621 transitions. [2021-05-21 20:32:00,480 INFO L78 Accepts]: Start accepts. Automaton has 13483 states and 71621 transitions. Word has length 33 [2021-05-21 20:32:00,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:00,480 INFO L482 AbstractCegarLoop]: Abstraction has 13483 states and 71621 transitions. [2021-05-21 20:32:00,480 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) [2021-05-21 20:32:00,480 INFO L276 IsEmpty]: Start isEmpty. Operand 13483 states and 71621 transitions. [2021-05-21 20:32:00,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:00,507 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:00,507 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] [2021-05-21 20:32:00,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-05-21 20:32:00,507 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:00,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:00,507 INFO L82 PathProgramCache]: Analyzing trace with hash 260228187, now seen corresponding path program 236 times [2021-05-21 20:32:00,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:00,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657940289] [2021-05-21 20:32:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:00,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:00,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657940289] [2021-05-21 20:32:00,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657940289] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:00,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:00,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:00,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236200433] [2021-05-21 20:32:00,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:00,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:00,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:00,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:00,659 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) [2021-05-21 20:32:00,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:00,878 INFO L93 Difference]: Finished difference Result 31852 states and 159971 transitions. [2021-05-21 20:32:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:00,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:00,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:00,974 INFO L225 Difference]: With dead ends: 31852 [2021-05-21 20:32:00,974 INFO L226 Difference]: Without dead ends: 30782 [2021-05-21 20:32:00,974 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30782 states. [2021-05-21 20:32:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30782 to 13307. [2021-05-21 20:32:02,148 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) [2021-05-21 20:32:02,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70749 transitions. [2021-05-21 20:32:02,188 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70749 transitions. Word has length 33 [2021-05-21 20:32:02,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:02,188 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70749 transitions. [2021-05-21 20:32:02,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:02,188 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70749 transitions. [2021-05-21 20:32:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:02,215 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:02,215 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:02,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-05-21 20:32:02,215 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:02,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:02,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1596364581, now seen corresponding path program 237 times [2021-05-21 20:32:02,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:02,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609473104] [2021-05-21 20:32:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:02,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:02,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609473104] [2021-05-21 20:32:02,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609473104] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:02,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:02,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:02,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547152483] [2021-05-21 20:32:02,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:02,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:02,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:02,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:02,368 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) [2021-05-21 20:32:02,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:02,585 INFO L93 Difference]: Finished difference Result 31498 states and 158405 transitions. [2021-05-21 20:32:02,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:02,585 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:02,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:02,682 INFO L225 Difference]: With dead ends: 31498 [2021-05-21 20:32:02,682 INFO L226 Difference]: Without dead ends: 30763 [2021-05-21 20:32:02,682 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 [2021-05-21 20:32:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30763 states. [2021-05-21 20:32:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30763 to 13419. [2021-05-21 20:32:03,844 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) [2021-05-21 20:32:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 71213 transitions. [2021-05-21 20:32:03,886 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 71213 transitions. Word has length 33 [2021-05-21 20:32:03,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:03,887 INFO L482 AbstractCegarLoop]: Abstraction has 13419 states and 71213 transitions. [2021-05-21 20:32:03,887 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) [2021-05-21 20:32:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 71213 transitions. [2021-05-21 20:32:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:03,914 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:03,914 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:03,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-05-21 20:32:03,915 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:03,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:03,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1972172123, now seen corresponding path program 238 times [2021-05-21 20:32:03,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:03,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386704385] [2021-05-21 20:32:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:04,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:04,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386704385] [2021-05-21 20:32:04,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386704385] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:04,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:04,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:04,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662521425] [2021-05-21 20:32:04,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:04,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:04,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:04,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:04,067 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) [2021-05-21 20:32:04,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:04,417 INFO L93 Difference]: Finished difference Result 31526 states and 158397 transitions. [2021-05-21 20:32:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:04,417 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:04,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:04,518 INFO L225 Difference]: With dead ends: 31526 [2021-05-21 20:32:04,518 INFO L226 Difference]: Without dead ends: 30651 [2021-05-21 20:32:04,518 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 175.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:05,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30651 states. [2021-05-21 20:32:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30651 to 13307. [2021-05-21 20:32:05,556 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) [2021-05-21 20:32:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13307 states to 13307 states and 70693 transitions. [2021-05-21 20:32:05,599 INFO L78 Accepts]: Start accepts. Automaton has 13307 states and 70693 transitions. Word has length 33 [2021-05-21 20:32:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:05,599 INFO L482 AbstractCegarLoop]: Abstraction has 13307 states and 70693 transitions. [2021-05-21 20:32:05,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 13307 states and 70693 transitions. [2021-05-21 20:32:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:05,627 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:05,627 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] [2021-05-21 20:32:05,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-05-21 20:32:05,627 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:05,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:05,627 INFO L82 PathProgramCache]: Analyzing trace with hash -2006277575, now seen corresponding path program 239 times [2021-05-21 20:32:05,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:05,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944441293] [2021-05-21 20:32:05,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:05,806 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-05-21 20:32:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:05,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:05,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944441293] [2021-05-21 20:32:05,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944441293] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:05,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:05,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:05,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464144517] [2021-05-21 20:32:05,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:05,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:05,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:05,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:05,880 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) [2021-05-21 20:32:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:06,090 INFO L93 Difference]: Finished difference Result 31894 states and 160102 transitions. [2021-05-21 20:32:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:06,091 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 [2021-05-21 20:32:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:06,192 INFO L225 Difference]: With dead ends: 31894 [2021-05-21 20:32:06,192 INFO L226 Difference]: Without dead ends: 31000 [2021-05-21 20:32:06,192 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 257.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:06,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31000 states. [2021-05-21 20:32:07,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31000 to 13497. [2021-05-21 20:32:07,390 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) [2021-05-21 20:32:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 71458 transitions. [2021-05-21 20:32:07,432 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 71458 transitions. Word has length 33 [2021-05-21 20:32:07,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:07,432 INFO L482 AbstractCegarLoop]: Abstraction has 13497 states and 71458 transitions. [2021-05-21 20:32:07,432 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) [2021-05-21 20:32:07,432 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 71458 transitions. [2021-05-21 20:32:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:07,459 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:07,459 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:07,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-05-21 20:32:07,459 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:07,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:07,459 INFO L82 PathProgramCache]: Analyzing trace with hash -605160037, now seen corresponding path program 240 times [2021-05-21 20:32:07,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:07,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217572299] [2021-05-21 20:32:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:07,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:07,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217572299] [2021-05-21 20:32:07,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217572299] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:07,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:07,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:07,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253216336] [2021-05-21 20:32:07,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:07,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:07,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:07,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:07,604 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) [2021-05-21 20:32:07,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:07,831 INFO L93 Difference]: Finished difference Result 31763 states and 159329 transitions. [2021-05-21 20:32:07,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:07,831 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 [2021-05-21 20:32:07,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:07,929 INFO L225 Difference]: With dead ends: 31763 [2021-05-21 20:32:07,929 INFO L226 Difference]: Without dead ends: 30656 [2021-05-21 20:32:07,929 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 [2021-05-21 20:32:08,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30656 states. [2021-05-21 20:32:09,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30656 to 13153. [2021-05-21 20:32:09,086 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) [2021-05-21 20:32:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13153 states to 13153 states and 70117 transitions. [2021-05-21 20:32:09,128 INFO L78 Accepts]: Start accepts. Automaton has 13153 states and 70117 transitions. Word has length 33 [2021-05-21 20:32:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:09,128 INFO L482 AbstractCegarLoop]: Abstraction has 13153 states and 70117 transitions. [2021-05-21 20:32:09,128 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) [2021-05-21 20:32:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 13153 states and 70117 transitions. [2021-05-21 20:32:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:09,155 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:09,155 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:09,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-05-21 20:32:09,155 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:09,156 INFO L82 PathProgramCache]: Analyzing trace with hash 2102111005, now seen corresponding path program 241 times [2021-05-21 20:32:09,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:09,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450707838] [2021-05-21 20:32:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:09,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:09,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450707838] [2021-05-21 20:32:09,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450707838] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:09,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:09,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:09,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694164161] [2021-05-21 20:32:09,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:09,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:09,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:09,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:09,295 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) [2021-05-21 20:32:09,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:09,521 INFO L93 Difference]: Finished difference Result 32231 states and 161807 transitions. [2021-05-21 20:32:09,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:09,521 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 [2021-05-21 20:32:09,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:09,621 INFO L225 Difference]: With dead ends: 32231 [2021-05-21 20:32:09,621 INFO L226 Difference]: Without dead ends: 31472 [2021-05-21 20:32:09,621 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 [2021-05-21 20:32:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31472 states. [2021-05-21 20:32:10,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31472 to 13482. [2021-05-21 20:32:10,773 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) [2021-05-21 20:32:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13482 states to 13482 states and 71759 transitions. [2021-05-21 20:32:10,817 INFO L78 Accepts]: Start accepts. Automaton has 13482 states and 71759 transitions. Word has length 33 [2021-05-21 20:32:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:10,817 INFO L482 AbstractCegarLoop]: Abstraction has 13482 states and 71759 transitions. [2021-05-21 20:32:10,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:10,817 INFO L276 IsEmpty]: Start isEmpty. Operand 13482 states and 71759 transitions. [2021-05-21 20:32:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:10,845 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:10,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:10,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-05-21 20:32:10,845 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:10,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:10,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1255314043, now seen corresponding path program 242 times [2021-05-21 20:32:10,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:10,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530660138] [2021-05-21 20:32:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:10,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:10,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530660138] [2021-05-21 20:32:10,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530660138] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:10,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:10,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:10,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760255699] [2021-05-21 20:32:10,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:10,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:10,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:10,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:10,983 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) [2021-05-21 20:32:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:11,212 INFO L93 Difference]: Finished difference Result 32223 states and 161659 transitions. [2021-05-21 20:32:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:11,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:11,311 INFO L225 Difference]: With dead ends: 32223 [2021-05-21 20:32:11,312 INFO L226 Difference]: Without dead ends: 31352 [2021-05-21 20:32:11,312 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 [2021-05-21 20:32:12,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31352 states. [2021-05-21 20:32:12,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31352 to 13362. [2021-05-21 20:32:12,522 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) [2021-05-21 20:32:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13362 states to 13362 states and 71207 transitions. [2021-05-21 20:32:12,564 INFO L78 Accepts]: Start accepts. Automaton has 13362 states and 71207 transitions. Word has length 33 [2021-05-21 20:32:12,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:12,564 INFO L482 AbstractCegarLoop]: Abstraction has 13362 states and 71207 transitions. [2021-05-21 20:32:12,564 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) [2021-05-21 20:32:12,564 INFO L276 IsEmpty]: Start isEmpty. Operand 13362 states and 71207 transitions. [2021-05-21 20:32:12,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:12,591 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:12,591 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:12,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-05-21 20:32:12,592 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:12,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:12,592 INFO L82 PathProgramCache]: Analyzing trace with hash -441461987, now seen corresponding path program 243 times [2021-05-21 20:32:12,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:12,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770051595] [2021-05-21 20:32:12,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:12,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:12,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770051595] [2021-05-21 20:32:12,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770051595] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:12,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:12,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:12,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341448019] [2021-05-21 20:32:12,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:12,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:12,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:12,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:12,745 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) [2021-05-21 20:32:12,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:12,979 INFO L93 Difference]: Finished difference Result 32442 states and 162706 transitions. [2021-05-21 20:32:12,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:12,979 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:12,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:13,082 INFO L225 Difference]: With dead ends: 32442 [2021-05-21 20:32:13,082 INFO L226 Difference]: Without dead ends: 31683 [2021-05-21 20:32:13,082 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 [2021-05-21 20:32:13,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31683 states. [2021-05-21 20:32:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31683 to 13550. [2021-05-21 20:32:14,255 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) [2021-05-21 20:32:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13550 states to 13550 states and 72031 transitions. [2021-05-21 20:32:14,298 INFO L78 Accepts]: Start accepts. Automaton has 13550 states and 72031 transitions. Word has length 33 [2021-05-21 20:32:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:14,298 INFO L482 AbstractCegarLoop]: Abstraction has 13550 states and 72031 transitions. [2021-05-21 20:32:14,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 13550 states and 72031 transitions. [2021-05-21 20:32:14,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:14,327 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:14,327 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:14,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-05-21 20:32:14,327 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:14,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:14,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1946618653, now seen corresponding path program 244 times [2021-05-21 20:32:14,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:14,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907435495] [2021-05-21 20:32:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:14,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:14,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907435495] [2021-05-21 20:32:14,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907435495] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:14,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:14,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:14,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793020253] [2021-05-21 20:32:14,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:14,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:14,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:14,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:14,481 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) [2021-05-21 20:32:14,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:14,829 INFO L93 Difference]: Finished difference Result 32577 states and 163177 transitions. [2021-05-21 20:32:14,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:14,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:14,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:14,931 INFO L225 Difference]: With dead ends: 32577 [2021-05-21 20:32:14,932 INFO L226 Difference]: Without dead ends: 31495 [2021-05-21 20:32:14,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 159.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:15,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31495 states. [2021-05-21 20:32:15,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31495 to 13362. [2021-05-21 20:32:15,976 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) [2021-05-21 20:32:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13362 states to 13362 states and 71115 transitions. [2021-05-21 20:32:16,018 INFO L78 Accepts]: Start accepts. Automaton has 13362 states and 71115 transitions. Word has length 33 [2021-05-21 20:32:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:16,018 INFO L482 AbstractCegarLoop]: Abstraction has 13362 states and 71115 transitions. [2021-05-21 20:32:16,018 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) [2021-05-21 20:32:16,018 INFO L276 IsEmpty]: Start isEmpty. Operand 13362 states and 71115 transitions. [2021-05-21 20:32:16,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:16,046 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:16,046 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:16,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-05-21 20:32:16,046 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:16,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:16,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1298210053, now seen corresponding path program 245 times [2021-05-21 20:32:16,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:16,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198222645] [2021-05-21 20:32:16,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:16,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:16,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198222645] [2021-05-21 20:32:16,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198222645] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:16,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:16,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:16,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579172622] [2021-05-21 20:32:16,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:16,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:16,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:16,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:16,305 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) [2021-05-21 20:32:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:16,560 INFO L93 Difference]: Finished difference Result 32422 states and 162542 transitions. [2021-05-21 20:32:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:16,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:16,661 INFO L225 Difference]: With dead ends: 32422 [2021-05-21 20:32:16,661 INFO L226 Difference]: Without dead ends: 31671 [2021-05-21 20:32:16,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 177.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:17,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31671 states. [2021-05-21 20:32:17,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31671 to 13546. [2021-05-21 20:32:17,829 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) [2021-05-21 20:32:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13546 states to 13546 states and 71927 transitions. [2021-05-21 20:32:17,871 INFO L78 Accepts]: Start accepts. Automaton has 13546 states and 71927 transitions. Word has length 33 [2021-05-21 20:32:17,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:17,872 INFO L482 AbstractCegarLoop]: Abstraction has 13546 states and 71927 transitions. [2021-05-21 20:32:17,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:17,872 INFO L276 IsEmpty]: Start isEmpty. Operand 13546 states and 71927 transitions. [2021-05-21 20:32:17,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:17,900 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:17,900 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] [2021-05-21 20:32:17,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-05-21 20:32:17,900 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:17,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:17,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1915733411, now seen corresponding path program 246 times [2021-05-21 20:32:17,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:17,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171124404] [2021-05-21 20:32:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:18,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:18,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171124404] [2021-05-21 20:32:18,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171124404] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:18,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:18,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:18,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965078306] [2021-05-21 20:32:18,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:18,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:18,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:18,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:18,055 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) [2021-05-21 20:32:18,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:18,262 INFO L93 Difference]: Finished difference Result 32565 states and 163045 transitions. [2021-05-21 20:32:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:18,262 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:18,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:18,360 INFO L225 Difference]: With dead ends: 32565 [2021-05-21 20:32:18,361 INFO L226 Difference]: Without dead ends: 31395 [2021-05-21 20:32:18,361 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 [2021-05-21 20:32:19,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31395 states. [2021-05-21 20:32:19,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31395 to 13270. [2021-05-21 20:32:19,497 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) [2021-05-21 20:32:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13270 states to 13270 states and 70709 transitions. [2021-05-21 20:32:19,539 INFO L78 Accepts]: Start accepts. Automaton has 13270 states and 70709 transitions. Word has length 33 [2021-05-21 20:32:19,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:19,539 INFO L482 AbstractCegarLoop]: Abstraction has 13270 states and 70709 transitions. [2021-05-21 20:32:19,539 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) [2021-05-21 20:32:19,539 INFO L276 IsEmpty]: Start isEmpty. Operand 13270 states and 70709 transitions. [2021-05-21 20:32:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:19,566 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:19,566 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] [2021-05-21 20:32:19,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-05-21 20:32:19,567 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:19,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:19,567 INFO L82 PathProgramCache]: Analyzing trace with hash -272900963, now seen corresponding path program 247 times [2021-05-21 20:32:19,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:19,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431388809] [2021-05-21 20:32:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:19,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:19,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431388809] [2021-05-21 20:32:19,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431388809] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:19,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:19,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:19,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580599426] [2021-05-21 20:32:19,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:19,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:19,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:19,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:19,697 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) [2021-05-21 20:32:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:19,929 INFO L93 Difference]: Finished difference Result 31942 states and 160367 transitions. [2021-05-21 20:32:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:19,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:19,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:20,027 INFO L225 Difference]: With dead ends: 31942 [2021-05-21 20:32:20,027 INFO L226 Difference]: Without dead ends: 31183 [2021-05-21 20:32:20,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31183 states. [2021-05-21 20:32:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31183 to 13450. [2021-05-21 20:32:21,170 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) [2021-05-21 20:32:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13450 states to 13450 states and 71537 transitions. [2021-05-21 20:32:21,211 INFO L78 Accepts]: Start accepts. Automaton has 13450 states and 71537 transitions. Word has length 33 [2021-05-21 20:32:21,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:21,211 INFO L482 AbstractCegarLoop]: Abstraction has 13450 states and 71537 transitions. [2021-05-21 20:32:21,211 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) [2021-05-21 20:32:21,211 INFO L276 IsEmpty]: Start isEmpty. Operand 13450 states and 71537 transitions. [2021-05-21 20:32:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:21,239 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:21,239 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] [2021-05-21 20:32:21,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-05-21 20:32:21,239 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:21,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:21,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1119697925, now seen corresponding path program 248 times [2021-05-21 20:32:21,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:21,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080829552] [2021-05-21 20:32:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:21,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:21,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080829552] [2021-05-21 20:32:21,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080829552] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:21,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:21,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:21,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377423721] [2021-05-21 20:32:21,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:21,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:21,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:21,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:21,371 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) [2021-05-21 20:32:21,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:21,593 INFO L93 Difference]: Finished difference Result 31934 states and 160219 transitions. [2021-05-21 20:32:21,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:21,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:21,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:21,692 INFO L225 Difference]: With dead ends: 31934 [2021-05-21 20:32:21,692 INFO L226 Difference]: Without dead ends: 31063 [2021-05-21 20:32:21,692 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:22,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31063 states. [2021-05-21 20:32:22,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31063 to 13330. [2021-05-21 20:32:22,837 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) [2021-05-21 20:32:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13330 states to 13330 states and 70985 transitions. [2021-05-21 20:32:22,879 INFO L78 Accepts]: Start accepts. Automaton has 13330 states and 70985 transitions. Word has length 33 [2021-05-21 20:32:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:22,879 INFO L482 AbstractCegarLoop]: Abstraction has 13330 states and 70985 transitions. [2021-05-21 20:32:22,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:22,879 INFO L276 IsEmpty]: Start isEmpty. Operand 13330 states and 70985 transitions. [2021-05-21 20:32:22,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:22,906 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:22,906 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] [2021-05-21 20:32:22,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-05-21 20:32:22,906 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:22,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2131566907, now seen corresponding path program 249 times [2021-05-21 20:32:22,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:22,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596669816] [2021-05-21 20:32:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:23,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:23,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596669816] [2021-05-21 20:32:23,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596669816] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:23,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:23,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:23,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953294349] [2021-05-21 20:32:23,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:23,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:23,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:23,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:23,037 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) [2021-05-21 20:32:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:23,266 INFO L93 Difference]: Finished difference Result 31960 states and 160368 transitions. [2021-05-21 20:32:23,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:23,267 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 [2021-05-21 20:32:23,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:23,554 INFO L225 Difference]: With dead ends: 31960 [2021-05-21 20:32:23,554 INFO L226 Difference]: Without dead ends: 31201 [2021-05-21 20:32:23,556 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:24,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31201 states. [2021-05-21 20:32:24,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31201 to 13454. [2021-05-21 20:32:24,552 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) [2021-05-21 20:32:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13454 states to 13454 states and 71489 transitions. [2021-05-21 20:32:24,596 INFO L78 Accepts]: Start accepts. Automaton has 13454 states and 71489 transitions. Word has length 33 [2021-05-21 20:32:24,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:24,596 INFO L482 AbstractCegarLoop]: Abstraction has 13454 states and 71489 transitions. [2021-05-21 20:32:24,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:24,596 INFO L276 IsEmpty]: Start isEmpty. Operand 13454 states and 71489 transitions. [2021-05-21 20:32:24,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:24,623 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:24,623 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:24,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-05-21 20:32:24,624 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:24,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:24,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1737660101, now seen corresponding path program 250 times [2021-05-21 20:32:24,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:24,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351741982] [2021-05-21 20:32:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:24,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:24,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351741982] [2021-05-21 20:32:24,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351741982] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:24,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:24,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:24,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100415599] [2021-05-21 20:32:24,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:24,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:24,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:24,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:24,763 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) [2021-05-21 20:32:25,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:25,141 INFO L93 Difference]: Finished difference Result 31966 states and 160261 transitions. [2021-05-21 20:32:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:25,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:25,241 INFO L225 Difference]: With dead ends: 31966 [2021-05-21 20:32:25,241 INFO L226 Difference]: Without dead ends: 31077 [2021-05-21 20:32:25,241 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 157.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:25,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31077 states. [2021-05-21 20:32:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31077 to 13330. [2021-05-21 20:32:26,277 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) [2021-05-21 20:32:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13330 states to 13330 states and 70925 transitions. [2021-05-21 20:32:26,319 INFO L78 Accepts]: Start accepts. Automaton has 13330 states and 70925 transitions. Word has length 33 [2021-05-21 20:32:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:26,319 INFO L482 AbstractCegarLoop]: Abstraction has 13330 states and 70925 transitions. [2021-05-21 20:32:26,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:26,319 INFO L276 IsEmpty]: Start isEmpty. Operand 13330 states and 70925 transitions. [2021-05-21 20:32:26,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:26,454 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:26,455 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] [2021-05-21 20:32:26,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-05-21 20:32:26,455 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:26,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:26,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1274818841, now seen corresponding path program 251 times [2021-05-21 20:32:26,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:26,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3664699] [2021-05-21 20:32:26,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:26,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:26,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3664699] [2021-05-21 20:32:26,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3664699] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:26,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:26,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:26,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410669386] [2021-05-21 20:32:26,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:26,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:26,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:26,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:26,596 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) [2021-05-21 20:32:26,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:26,826 INFO L93 Difference]: Finished difference Result 31940 states and 160236 transitions. [2021-05-21 20:32:26,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:26,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:26,923 INFO L225 Difference]: With dead ends: 31940 [2021-05-21 20:32:26,924 INFO L226 Difference]: Without dead ends: 31189 [2021-05-21 20:32:26,924 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 [2021-05-21 20:32:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31189 states. [2021-05-21 20:32:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31189 to 13450. [2021-05-21 20:32:28,081 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) [2021-05-21 20:32:28,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13450 states to 13450 states and 71417 transitions. [2021-05-21 20:32:28,125 INFO L78 Accepts]: Start accepts. Automaton has 13450 states and 71417 transitions. Word has length 33 [2021-05-21 20:32:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:28,125 INFO L482 AbstractCegarLoop]: Abstraction has 13450 states and 71417 transitions. [2021-05-21 20:32:28,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:28,125 INFO L276 IsEmpty]: Start isEmpty. Operand 13450 states and 71417 transitions. [2021-05-21 20:32:28,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:28,152 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:28,152 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:28,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-05-21 20:32:28,152 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:28,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:28,153 INFO L82 PathProgramCache]: Analyzing trace with hash -35762181, now seen corresponding path program 252 times [2021-05-21 20:32:28,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:28,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494678404] [2021-05-21 20:32:28,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:28,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:28,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494678404] [2021-05-21 20:32:28,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494678404] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:28,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:28,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:28,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456580159] [2021-05-21 20:32:28,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:28,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:28,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:28,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:28,294 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) [2021-05-21 20:32:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:28,548 INFO L93 Difference]: Finished difference Result 31954 states and 160161 transitions. [2021-05-21 20:32:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:28,548 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:28,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:28,648 INFO L225 Difference]: With dead ends: 31954 [2021-05-21 20:32:28,648 INFO L226 Difference]: Without dead ends: 31009 [2021-05-21 20:32:28,648 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 [2021-05-21 20:32:29,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31009 states. [2021-05-21 20:32:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31009 to 13270. [2021-05-21 20:32:29,780 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) [2021-05-21 20:32:29,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13270 states to 13270 states and 70679 transitions. [2021-05-21 20:32:29,822 INFO L78 Accepts]: Start accepts. Automaton has 13270 states and 70679 transitions. Word has length 33 [2021-05-21 20:32:29,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:29,822 INFO L482 AbstractCegarLoop]: Abstraction has 13270 states and 70679 transitions. [2021-05-21 20:32:29,822 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) [2021-05-21 20:32:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 13270 states and 70679 transitions. [2021-05-21 20:32:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:29,848 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:29,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:29,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-05-21 20:32:29,848 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:29,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1912748347, now seen corresponding path program 253 times [2021-05-21 20:32:29,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:29,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836988265] [2021-05-21 20:32:29,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:29,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:29,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836988265] [2021-05-21 20:32:29,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836988265] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:29,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:29,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:29,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415555302] [2021-05-21 20:32:29,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:29,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:29,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:29,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:29,992 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) [2021-05-21 20:32:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:30,231 INFO L93 Difference]: Finished difference Result 32565 states and 163186 transitions. [2021-05-21 20:32:30,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:30,231 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:30,331 INFO L225 Difference]: With dead ends: 32565 [2021-05-21 20:32:30,332 INFO L226 Difference]: Without dead ends: 31806 [2021-05-21 20:32:30,332 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 [2021-05-21 20:32:31,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31806 states. [2021-05-21 20:32:31,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31806 to 13584. [2021-05-21 20:32:31,538 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) [2021-05-21 20:32:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13584 states to 13584 states and 72168 transitions. [2021-05-21 20:32:31,581 INFO L78 Accepts]: Start accepts. Automaton has 13584 states and 72168 transitions. Word has length 33 [2021-05-21 20:32:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:31,581 INFO L482 AbstractCegarLoop]: Abstraction has 13584 states and 72168 transitions. [2021-05-21 20:32:31,581 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) [2021-05-21 20:32:31,581 INFO L276 IsEmpty]: Start isEmpty. Operand 13584 states and 72168 transitions. [2021-05-21 20:32:31,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:31,608 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:31,608 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:31,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-05-21 20:32:31,608 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:31,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:31,609 INFO L82 PathProgramCache]: Analyzing trace with hash 5861691, now seen corresponding path program 254 times [2021-05-21 20:32:31,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:31,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98520319] [2021-05-21 20:32:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:31,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:31,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98520319] [2021-05-21 20:32:31,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98520319] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:31,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:31,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:31,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276138191] [2021-05-21 20:32:31,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:31,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:31,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:31,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:31,754 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) [2021-05-21 20:32:31,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:31,985 INFO L93 Difference]: Finished difference Result 32700 states and 163657 transitions. [2021-05-21 20:32:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:31,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:31,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:32,084 INFO L225 Difference]: With dead ends: 32700 [2021-05-21 20:32:32,084 INFO L226 Difference]: Without dead ends: 31618 [2021-05-21 20:32:32,084 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:32,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31618 states. [2021-05-21 20:32:33,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31618 to 13396. [2021-05-21 20:32:33,236 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) [2021-05-21 20:32:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13396 states to 13396 states and 71250 transitions. [2021-05-21 20:32:33,279 INFO L78 Accepts]: Start accepts. Automaton has 13396 states and 71250 transitions. Word has length 33 [2021-05-21 20:32:33,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:33,279 INFO L482 AbstractCegarLoop]: Abstraction has 13396 states and 71250 transitions. [2021-05-21 20:32:33,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 13396 states and 71250 transitions. [2021-05-21 20:32:33,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:33,306 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:33,306 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] [2021-05-21 20:32:33,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-05-21 20:32:33,306 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:33,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:33,307 INFO L82 PathProgramCache]: Analyzing trace with hash -672617187, now seen corresponding path program 255 times [2021-05-21 20:32:33,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:33,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087268322] [2021-05-21 20:32:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:33,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:33,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087268322] [2021-05-21 20:32:33,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087268322] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:33,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:33,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:33,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260513217] [2021-05-21 20:32:33,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:33,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:33,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:33,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:33,470 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) [2021-05-21 20:32:33,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:33,693 INFO L93 Difference]: Finished difference Result 32372 states and 162194 transitions. [2021-05-21 20:32:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:33,693 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:33,998 INFO L225 Difference]: With dead ends: 32372 [2021-05-21 20:32:33,998 INFO L226 Difference]: Without dead ends: 31613 [2021-05-21 20:32:33,998 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 158.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:34,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31613 states. [2021-05-21 20:32:35,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31613 to 13520. [2021-05-21 20:32:35,053 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) [2021-05-21 20:32:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13520 states to 13520 states and 71754 transitions. [2021-05-21 20:32:35,095 INFO L78 Accepts]: Start accepts. Automaton has 13520 states and 71754 transitions. Word has length 33 [2021-05-21 20:32:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:35,095 INFO L482 AbstractCegarLoop]: Abstraction has 13520 states and 71754 transitions. [2021-05-21 20:32:35,095 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) [2021-05-21 20:32:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 13520 states and 71754 transitions. [2021-05-21 20:32:35,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:35,123 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:35,123 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] [2021-05-21 20:32:35,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-05-21 20:32:35,123 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:35,124 INFO L82 PathProgramCache]: Analyzing trace with hash 2020053307, now seen corresponding path program 256 times [2021-05-21 20:32:35,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:35,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512855496] [2021-05-21 20:32:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:35,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:35,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512855496] [2021-05-21 20:32:35,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512855496] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:35,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:35,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:35,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654907196] [2021-05-21 20:32:35,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:35,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:35,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:35,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:35,253 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) [2021-05-21 20:32:35,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:35,617 INFO L93 Difference]: Finished difference Result 32378 states and 162087 transitions. [2021-05-21 20:32:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:35,618 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:35,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:35,720 INFO L225 Difference]: With dead ends: 32378 [2021-05-21 20:32:35,720 INFO L226 Difference]: Without dead ends: 31489 [2021-05-21 20:32:35,720 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 154.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:36,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31489 states. [2021-05-21 20:32:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31489 to 13396. [2021-05-21 20:32:36,767 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) [2021-05-21 20:32:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13396 states to 13396 states and 71188 transitions. [2021-05-21 20:32:36,983 INFO L78 Accepts]: Start accepts. Automaton has 13396 states and 71188 transitions. Word has length 33 [2021-05-21 20:32:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:36,983 INFO L482 AbstractCegarLoop]: Abstraction has 13396 states and 71188 transitions. [2021-05-21 20:32:36,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 13396 states and 71188 transitions. [2021-05-21 20:32:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:37,014 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:37,014 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] [2021-05-21 20:32:37,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-05-21 20:32:37,015 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:37,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:37,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1120385339, now seen corresponding path program 257 times [2021-05-21 20:32:37,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:37,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796605006] [2021-05-21 20:32:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:37,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:37,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796605006] [2021-05-21 20:32:37,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796605006] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:37,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:37,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:37,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833606] [2021-05-21 20:32:37,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:37,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:37,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:37,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:37,146 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) [2021-05-21 20:32:37,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:37,353 INFO L93 Difference]: Finished difference Result 32773 states and 163908 transitions. [2021-05-21 20:32:37,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:37,353 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:37,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:37,455 INFO L225 Difference]: With dead ends: 32773 [2021-05-21 20:32:37,455 INFO L226 Difference]: Without dead ends: 31879 [2021-05-21 20:32:37,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31879 states. [2021-05-21 20:32:38,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31879 to 13651. [2021-05-21 20:32:38,643 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) [2021-05-21 20:32:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13651 states to 13651 states and 72211 transitions. [2021-05-21 20:32:38,687 INFO L78 Accepts]: Start accepts. Automaton has 13651 states and 72211 transitions. Word has length 33 [2021-05-21 20:32:38,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:38,687 INFO L482 AbstractCegarLoop]: Abstraction has 13651 states and 72211 transitions. [2021-05-21 20:32:38,687 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) [2021-05-21 20:32:38,687 INFO L276 IsEmpty]: Start isEmpty. Operand 13651 states and 72211 transitions. [2021-05-21 20:32:38,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:38,716 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:38,716 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:38,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-05-21 20:32:38,716 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:38,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:38,716 INFO L82 PathProgramCache]: Analyzing trace with hash 639483293, now seen corresponding path program 258 times [2021-05-21 20:32:38,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:38,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327104235] [2021-05-21 20:32:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:38,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:38,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327104235] [2021-05-21 20:32:38,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327104235] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:38,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:38,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:38,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976013521] [2021-05-21 20:32:38,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:38,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:38,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:38,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:38,846 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) [2021-05-21 20:32:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:39,077 INFO L93 Difference]: Finished difference Result 32644 states and 163139 transitions. [2021-05-21 20:32:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:39,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:39,177 INFO L225 Difference]: With dead ends: 32644 [2021-05-21 20:32:39,177 INFO L226 Difference]: Without dead ends: 31498 [2021-05-21 20:32:39,177 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:39,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31498 states. [2021-05-21 20:32:40,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31498 to 13270. [2021-05-21 20:32:40,318 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) [2021-05-21 20:32:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13270 states to 13270 states and 70617 transitions. [2021-05-21 20:32:40,358 INFO L78 Accepts]: Start accepts. Automaton has 13270 states and 70617 transitions. Word has length 33 [2021-05-21 20:32:40,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:40,358 INFO L482 AbstractCegarLoop]: Abstraction has 13270 states and 70617 transitions. [2021-05-21 20:32:40,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:40,359 INFO L276 IsEmpty]: Start isEmpty. Operand 13270 states and 70617 transitions. [2021-05-21 20:32:40,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:40,385 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:40,385 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:40,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-05-21 20:32:40,385 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:40,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:40,386 INFO L82 PathProgramCache]: Analyzing trace with hash 82923929, now seen corresponding path program 259 times [2021-05-21 20:32:40,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:40,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979868011] [2021-05-21 20:32:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:40,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:40,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979868011] [2021-05-21 20:32:40,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979868011] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:40,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:40,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:40,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192817631] [2021-05-21 20:32:40,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:40,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:40,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:40,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:40,538 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) [2021-05-21 20:32:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:40,762 INFO L93 Difference]: Finished difference Result 32527 states and 162983 transitions. [2021-05-21 20:32:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:40,763 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:40,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:40,861 INFO L225 Difference]: With dead ends: 32527 [2021-05-21 20:32:40,861 INFO L226 Difference]: Without dead ends: 31776 [2021-05-21 20:32:40,861 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31776 states. [2021-05-21 20:32:41,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31776 to 13578. [2021-05-21 20:32:41,979 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) [2021-05-21 20:32:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13578 states to 13578 states and 72085 transitions. [2021-05-21 20:32:42,019 INFO L78 Accepts]: Start accepts. Automaton has 13578 states and 72085 transitions. Word has length 33 [2021-05-21 20:32:42,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:42,019 INFO L482 AbstractCegarLoop]: Abstraction has 13578 states and 72085 transitions. [2021-05-21 20:32:42,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand 13578 states and 72085 transitions. [2021-05-21 20:32:42,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:42,044 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:42,044 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:42,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-05-21 20:32:42,044 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:42,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:42,044 INFO L82 PathProgramCache]: Analyzing trace with hash -534599429, now seen corresponding path program 260 times [2021-05-21 20:32:42,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:42,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136471481] [2021-05-21 20:32:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:42,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:42,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136471481] [2021-05-21 20:32:42,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136471481] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:42,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:42,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:42,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287637514] [2021-05-21 20:32:42,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:42,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:42,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:42,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:42,198 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) [2021-05-21 20:32:42,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:42,411 INFO L93 Difference]: Finished difference Result 32670 states and 163486 transitions. [2021-05-21 20:32:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:42,412 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:42,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:42,510 INFO L225 Difference]: With dead ends: 32670 [2021-05-21 20:32:42,510 INFO L226 Difference]: Without dead ends: 31592 [2021-05-21 20:32:42,511 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 [2021-05-21 20:32:43,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31592 states. [2021-05-21 20:32:43,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31592 to 13394. [2021-05-21 20:32:43,673 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) [2021-05-21 20:32:43,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13394 states to 13394 states and 71181 transitions. [2021-05-21 20:32:43,717 INFO L78 Accepts]: Start accepts. Automaton has 13394 states and 71181 transitions. Word has length 33 [2021-05-21 20:32:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:43,717 INFO L482 AbstractCegarLoop]: Abstraction has 13394 states and 71181 transitions. [2021-05-21 20:32:43,717 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) [2021-05-21 20:32:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 13394 states and 71181 transitions. [2021-05-21 20:32:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:43,745 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:43,745 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] [2021-05-21 20:32:43,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-05-21 20:32:43,745 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:43,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:43,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1792525691, now seen corresponding path program 261 times [2021-05-21 20:32:43,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:43,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611459371] [2021-05-21 20:32:43,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:43,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:43,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611459371] [2021-05-21 20:32:43,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611459371] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:43,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:43,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:43,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127764549] [2021-05-21 20:32:43,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:43,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:43,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:43,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:43,901 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) [2021-05-21 20:32:44,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:44,270 INFO L93 Difference]: Finished difference Result 32334 states and 161993 transitions. [2021-05-21 20:32:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:44,270 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 [2021-05-21 20:32:44,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:44,374 INFO L225 Difference]: With dead ends: 32334 [2021-05-21 20:32:44,374 INFO L226 Difference]: Without dead ends: 31583 [2021-05-21 20:32:44,374 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 178.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31583 states. [2021-05-21 20:32:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31583 to 13514. [2021-05-21 20:32:45,440 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) [2021-05-21 20:32:45,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13514 states to 13514 states and 71673 transitions. [2021-05-21 20:32:45,483 INFO L78 Accepts]: Start accepts. Automaton has 13514 states and 71673 transitions. Word has length 33 [2021-05-21 20:32:45,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:45,483 INFO L482 AbstractCegarLoop]: Abstraction has 13514 states and 71673 transitions. [2021-05-21 20:32:45,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 13514 states and 71673 transitions. [2021-05-21 20:32:45,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:45,511 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:45,511 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:45,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-05-21 20:32:45,511 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:45,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1546092421, now seen corresponding path program 262 times [2021-05-21 20:32:45,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:45,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005850680] [2021-05-21 20:32:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:45,819 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2021-05-21 20:32:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:45,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:45,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005850680] [2021-05-21 20:32:45,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005850680] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:45,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:45,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:45,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302273736] [2021-05-21 20:32:45,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:45,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:45,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:45,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:45,874 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) [2021-05-21 20:32:46,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:46,116 INFO L93 Difference]: Finished difference Result 32348 states and 161918 transitions. [2021-05-21 20:32:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:46,116 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 [2021-05-21 20:32:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:46,218 INFO L225 Difference]: With dead ends: 32348 [2021-05-21 20:32:46,218 INFO L226 Difference]: Without dead ends: 31463 [2021-05-21 20:32:46,218 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 382.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:46,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31463 states. [2021-05-21 20:32:47,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31463 to 13394. [2021-05-21 20:32:47,407 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) [2021-05-21 20:32:47,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13394 states to 13394 states and 71121 transitions. [2021-05-21 20:32:47,450 INFO L78 Accepts]: Start accepts. Automaton has 13394 states and 71121 transitions. Word has length 33 [2021-05-21 20:32:47,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:47,450 INFO L482 AbstractCegarLoop]: Abstraction has 13394 states and 71121 transitions. [2021-05-21 20:32:47,450 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) [2021-05-21 20:32:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand 13394 states and 71121 transitions. [2021-05-21 20:32:47,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:47,478 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:47,478 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] [2021-05-21 20:32:47,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-05-21 20:32:47,479 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:47,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1577543843, now seen corresponding path program 263 times [2021-05-21 20:32:47,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:47,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264700835] [2021-05-21 20:32:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:47,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:47,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264700835] [2021-05-21 20:32:47,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264700835] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:47,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:47,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:47,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968748368] [2021-05-21 20:32:47,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:47,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:47,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:47,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:47,620 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) [2021-05-21 20:32:47,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:47,856 INFO L93 Difference]: Finished difference Result 32755 states and 163781 transitions. [2021-05-21 20:32:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:47,856 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 [2021-05-21 20:32:47,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:47,958 INFO L225 Difference]: With dead ends: 32755 [2021-05-21 20:32:47,958 INFO L226 Difference]: Without dead ends: 31861 [2021-05-21 20:32:47,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 145.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31861 states. [2021-05-21 20:32:49,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31861 to 13649. [2021-05-21 20:32:49,117 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) [2021-05-21 20:32:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13649 states to 13649 states and 72144 transitions. [2021-05-21 20:32:49,157 INFO L78 Accepts]: Start accepts. Automaton has 13649 states and 72144 transitions. Word has length 33 [2021-05-21 20:32:49,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:49,158 INFO L482 AbstractCegarLoop]: Abstraction has 13649 states and 72144 transitions. [2021-05-21 20:32:49,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:49,158 INFO L276 IsEmpty]: Start isEmpty. Operand 13649 states and 72144 transitions. [2021-05-21 20:32:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:49,183 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:49,183 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:49,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-05-21 20:32:49,183 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:49,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:49,183 INFO L82 PathProgramCache]: Analyzing trace with hash 694361915, now seen corresponding path program 264 times [2021-05-21 20:32:49,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:49,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820878237] [2021-05-21 20:32:49,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:49,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:49,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820878237] [2021-05-21 20:32:49,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820878237] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:49,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:49,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:49,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421334557] [2021-05-21 20:32:49,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:49,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:49,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:49,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:49,321 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) [2021-05-21 20:32:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:49,539 INFO L93 Difference]: Finished difference Result 32626 states and 163012 transitions. [2021-05-21 20:32:49,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:49,540 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:49,634 INFO L225 Difference]: With dead ends: 32626 [2021-05-21 20:32:49,635 INFO L226 Difference]: Without dead ends: 31420 [2021-05-21 20:32:49,635 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 160.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:50,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31420 states. [2021-05-21 20:32:50,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31420 to 13208. [2021-05-21 20:32:50,802 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) [2021-05-21 20:32:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 70365 transitions. [2021-05-21 20:32:50,843 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 70365 transitions. Word has length 33 [2021-05-21 20:32:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:50,843 INFO L482 AbstractCegarLoop]: Abstraction has 13208 states and 70365 transitions. [2021-05-21 20:32:50,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 70365 transitions. [2021-05-21 20:32:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:50,870 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:50,870 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:50,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-05-21 20:32:50,870 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:50,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:50,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1776528261, now seen corresponding path program 265 times [2021-05-21 20:32:50,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:50,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182689539] [2021-05-21 20:32:50,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:51,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:51,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182689539] [2021-05-21 20:32:51,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182689539] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:51,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:51,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:51,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720306] [2021-05-21 20:32:51,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:51,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:51,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:51,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:51,020 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) [2021-05-21 20:32:51,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:51,226 INFO L93 Difference]: Finished difference Result 32084 states and 161144 transitions. [2021-05-21 20:32:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:51,226 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 [2021-05-21 20:32:51,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:51,324 INFO L225 Difference]: With dead ends: 32084 [2021-05-21 20:32:51,324 INFO L226 Difference]: Without dead ends: 31325 [2021-05-21 20:32:51,324 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 [2021-05-21 20:32:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31325 states. [2021-05-21 20:32:52,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31325 to 13466. [2021-05-21 20:32:52,488 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) [2021-05-21 20:32:52,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 71648 transitions. [2021-05-21 20:32:52,528 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 71648 transitions. Word has length 33 [2021-05-21 20:32:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:52,528 INFO L482 AbstractCegarLoop]: Abstraction has 13466 states and 71648 transitions. [2021-05-21 20:32:52,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 71648 transitions. [2021-05-21 20:32:52,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:52,554 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:52,554 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:52,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-05-21 20:32:52,554 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:52,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:52,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1671642073, now seen corresponding path program 266 times [2021-05-21 20:32:52,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:52,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816329460] [2021-05-21 20:32:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:52,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:52,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816329460] [2021-05-21 20:32:52,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816329460] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:52,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:52,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:52,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437110152] [2021-05-21 20:32:52,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:52,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:52,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:52,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:52,693 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) [2021-05-21 20:32:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:52,912 INFO L93 Difference]: Finished difference Result 32076 states and 160996 transitions. [2021-05-21 20:32:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:53,182 INFO L225 Difference]: With dead ends: 32076 [2021-05-21 20:32:53,182 INFO L226 Difference]: Without dead ends: 31205 [2021-05-21 20:32:53,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:53,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31205 states. [2021-05-21 20:32:54,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31205 to 13346. [2021-05-21 20:32:54,165 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) [2021-05-21 20:32:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 71096 transitions. [2021-05-21 20:32:54,206 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 71096 transitions. Word has length 33 [2021-05-21 20:32:54,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:54,206 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 71096 transitions. [2021-05-21 20:32:54,206 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) [2021-05-21 20:32:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 71096 transitions. [2021-05-21 20:32:54,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:54,233 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:54,233 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] [2021-05-21 20:32:54,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-05-21 20:32:54,233 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:54,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:54,234 INFO L82 PathProgramCache]: Analyzing trace with hash -25133957, now seen corresponding path program 267 times [2021-05-21 20:32:54,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:54,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471703054] [2021-05-21 20:32:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:54,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:54,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471703054] [2021-05-21 20:32:54,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471703054] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:54,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:54,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:54,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977980632] [2021-05-21 20:32:54,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:54,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:54,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:54,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:54,390 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) [2021-05-21 20:32:54,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:54,806 INFO L93 Difference]: Finished difference Result 32295 states and 162043 transitions. [2021-05-21 20:32:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:54,806 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:54,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:54,905 INFO L225 Difference]: With dead ends: 32295 [2021-05-21 20:32:54,905 INFO L226 Difference]: Without dead ends: 31536 [2021-05-21 20:32:54,905 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 [2021-05-21 20:32:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31536 states. [2021-05-21 20:32:55,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31536 to 13534. [2021-05-21 20:32:55,941 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) [2021-05-21 20:32:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13534 states to 13534 states and 71920 transitions. [2021-05-21 20:32:55,983 INFO L78 Accepts]: Start accepts. Automaton has 13534 states and 71920 transitions. Word has length 33 [2021-05-21 20:32:55,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:55,983 INFO L482 AbstractCegarLoop]: Abstraction has 13534 states and 71920 transitions. [2021-05-21 20:32:55,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 13534 states and 71920 transitions. [2021-05-21 20:32:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:56,131 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:56,131 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:56,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-05-21 20:32:56,132 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:56,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1932020613, now seen corresponding path program 268 times [2021-05-21 20:32:56,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:56,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395545934] [2021-05-21 20:32:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:56,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:56,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395545934] [2021-05-21 20:32:56,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395545934] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:56,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:56,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:56,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304081021] [2021-05-21 20:32:56,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:56,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:56,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:56,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:56,304 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) [2021-05-21 20:32:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:56,537 INFO L93 Difference]: Finished difference Result 32430 states and 162514 transitions. [2021-05-21 20:32:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:56,537 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:56,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:56,655 INFO L225 Difference]: With dead ends: 32430 [2021-05-21 20:32:56,655 INFO L226 Difference]: Without dead ends: 31348 [2021-05-21 20:32:56,655 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 [2021-05-21 20:32:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31348 states. [2021-05-21 20:32:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31348 to 13346. [2021-05-21 20:32:57,813 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) [2021-05-21 20:32:57,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 71004 transitions. [2021-05-21 20:32:57,856 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 71004 transitions. Word has length 33 [2021-05-21 20:32:57,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:57,856 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 71004 transitions. [2021-05-21 20:32:57,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:57,856 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 71004 transitions. [2021-05-21 20:32:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:57,882 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:57,883 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:57,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-05-21 20:32:57,883 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:57,883 INFO L82 PathProgramCache]: Analyzing trace with hash -881882023, now seen corresponding path program 269 times [2021-05-21 20:32:57,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:57,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364079517] [2021-05-21 20:32:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:58,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:58,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364079517] [2021-05-21 20:32:58,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364079517] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:58,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:58,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:58,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970179706] [2021-05-21 20:32:58,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:58,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:58,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:58,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:58,036 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) [2021-05-21 20:32:58,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:58,265 INFO L93 Difference]: Finished difference Result 32275 states and 161879 transitions. [2021-05-21 20:32:58,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:58,266 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 [2021-05-21 20:32:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:32:58,364 INFO L225 Difference]: With dead ends: 32275 [2021-05-21 20:32:58,364 INFO L226 Difference]: Without dead ends: 31524 [2021-05-21 20:32:58,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:32:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31524 states. [2021-05-21 20:32:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31524 to 13530. [2021-05-21 20:32:59,478 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) [2021-05-21 20:32:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13530 states to 13530 states and 71816 transitions. [2021-05-21 20:32:59,519 INFO L78 Accepts]: Start accepts. Automaton has 13530 states and 71816 transitions. Word has length 33 [2021-05-21 20:32:59,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:32:59,519 INFO L482 AbstractCegarLoop]: Abstraction has 13530 states and 71816 transitions. [2021-05-21 20:32:59,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:32:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 13530 states and 71816 transitions. [2021-05-21 20:32:59,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:32:59,545 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:32:59,545 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:32:59,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-05-21 20:32:59,545 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:32:59,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:32:59,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1499405381, now seen corresponding path program 270 times [2021-05-21 20:32:59,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:32:59,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024192342] [2021-05-21 20:32:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:32:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:32:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:32:59,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:32:59,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024192342] [2021-05-21 20:32:59,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024192342] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:32:59,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:32:59,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:32:59,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804181394] [2021-05-21 20:32:59,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:32:59,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:32:59,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:32:59,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:32:59,700 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) [2021-05-21 20:32:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:32:59,905 INFO L93 Difference]: Finished difference Result 32418 states and 162382 transitions. [2021-05-21 20:32:59,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:32:59,905 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:32:59,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:00,003 INFO L225 Difference]: With dead ends: 32418 [2021-05-21 20:33:00,004 INFO L226 Difference]: Without dead ends: 31248 [2021-05-21 20:33:00,004 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 [2021-05-21 20:33:00,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31248 states. [2021-05-21 20:33:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31248 to 13254. [2021-05-21 20:33:01,126 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) [2021-05-21 20:33:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13254 states to 13254 states and 70598 transitions. [2021-05-21 20:33:01,169 INFO L78 Accepts]: Start accepts. Automaton has 13254 states and 70598 transitions. Word has length 33 [2021-05-21 20:33:01,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:01,169 INFO L482 AbstractCegarLoop]: Abstraction has 13254 states and 70598 transitions. [2021-05-21 20:33:01,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:01,169 INFO L276 IsEmpty]: Start isEmpty. Operand 13254 states and 70598 transitions. [2021-05-21 20:33:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:01,197 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:01,197 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:01,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-05-21 20:33:01,197 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:01,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:01,197 INFO L82 PathProgramCache]: Analyzing trace with hash -343819107, now seen corresponding path program 271 times [2021-05-21 20:33:01,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:01,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256015971] [2021-05-21 20:33:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:01,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:01,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256015971] [2021-05-21 20:33:01,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256015971] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:01,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:01,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:01,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997620855] [2021-05-21 20:33:01,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:01,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:01,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:01,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:01,325 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) [2021-05-21 20:33:01,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:01,561 INFO L93 Difference]: Finished difference Result 31793 states and 159699 transitions. [2021-05-21 20:33:01,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:01,561 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 [2021-05-21 20:33:01,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:01,655 INFO L225 Difference]: With dead ends: 31793 [2021-05-21 20:33:01,655 INFO L226 Difference]: Without dead ends: 31034 [2021-05-21 20:33:01,655 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:02,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31034 states. [2021-05-21 20:33:02,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31034 to 13434. [2021-05-21 20:33:02,802 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) [2021-05-21 20:33:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13434 states to 13434 states and 71426 transitions. [2021-05-21 20:33:02,845 INFO L78 Accepts]: Start accepts. Automaton has 13434 states and 71426 transitions. Word has length 33 [2021-05-21 20:33:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:02,845 INFO L482 AbstractCegarLoop]: Abstraction has 13434 states and 71426 transitions. [2021-05-21 20:33:02,845 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) [2021-05-21 20:33:02,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13434 states and 71426 transitions. [2021-05-21 20:33:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:02,872 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:02,872 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:02,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-05-21 20:33:02,872 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:02,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1190616069, now seen corresponding path program 272 times [2021-05-21 20:33:02,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:02,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515023959] [2021-05-21 20:33:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:02,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:02,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515023959] [2021-05-21 20:33:02,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515023959] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:02,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:02,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:02,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977608224] [2021-05-21 20:33:02,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:02,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:02,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:02,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:02,999 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) [2021-05-21 20:33:03,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:03,234 INFO L93 Difference]: Finished difference Result 31785 states and 159551 transitions. [2021-05-21 20:33:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:03,234 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 [2021-05-21 20:33:03,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:03,505 INFO L225 Difference]: With dead ends: 31785 [2021-05-21 20:33:03,505 INFO L226 Difference]: Without dead ends: 30914 [2021-05-21 20:33:03,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:04,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30914 states. [2021-05-21 20:33:04,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30914 to 13314. [2021-05-21 20:33:04,511 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) [2021-05-21 20:33:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13314 states to 13314 states and 70874 transitions. [2021-05-21 20:33:04,554 INFO L78 Accepts]: Start accepts. Automaton has 13314 states and 70874 transitions. Word has length 33 [2021-05-21 20:33:04,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:04,555 INFO L482 AbstractCegarLoop]: Abstraction has 13314 states and 70874 transitions. [2021-05-21 20:33:04,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand 13314 states and 70874 transitions. [2021-05-21 20:33:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:04,582 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:04,582 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] [2021-05-21 20:33:04,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-05-21 20:33:04,582 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:04,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:04,582 INFO L82 PathProgramCache]: Analyzing trace with hash 769137083, now seen corresponding path program 273 times [2021-05-21 20:33:04,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:04,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651742936] [2021-05-21 20:33:04,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:04,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:04,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651742936] [2021-05-21 20:33:04,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651742936] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:04,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:04,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:04,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246502047] [2021-05-21 20:33:04,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:04,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:04,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:04,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:04,711 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) [2021-05-21 20:33:04,970 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2021-05-21 20:33:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:05,076 INFO L93 Difference]: Finished difference Result 31809 states and 159695 transitions. [2021-05-21 20:33:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:05,076 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:05,174 INFO L225 Difference]: With dead ends: 31809 [2021-05-21 20:33:05,175 INFO L226 Difference]: Without dead ends: 31050 [2021-05-21 20:33:05,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 304.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31050 states. [2021-05-21 20:33:06,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31050 to 13438. [2021-05-21 20:33:06,205 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) [2021-05-21 20:33:06,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13438 states to 13438 states and 71378 transitions. [2021-05-21 20:33:06,422 INFO L78 Accepts]: Start accepts. Automaton has 13438 states and 71378 transitions. Word has length 33 [2021-05-21 20:33:06,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:06,422 INFO L482 AbstractCegarLoop]: Abstraction has 13438 states and 71378 transitions. [2021-05-21 20:33:06,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:06,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13438 states and 71378 transitions. [2021-05-21 20:33:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:06,450 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:06,450 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] [2021-05-21 20:33:06,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-05-21 20:33:06,450 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:06,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:06,450 INFO L82 PathProgramCache]: Analyzing trace with hash -767462981, now seen corresponding path program 274 times [2021-05-21 20:33:06,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:06,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947465779] [2021-05-21 20:33:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:06,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:06,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:06,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947465779] [2021-05-21 20:33:06,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947465779] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:06,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:06,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:06,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929582685] [2021-05-21 20:33:06,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:06,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:06,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:06,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:06,573 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) [2021-05-21 20:33:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:06,799 INFO L93 Difference]: Finished difference Result 31813 states and 159583 transitions. [2021-05-21 20:33:06,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:06,800 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:06,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:06,893 INFO L225 Difference]: With dead ends: 31813 [2021-05-21 20:33:06,893 INFO L226 Difference]: Without dead ends: 30926 [2021-05-21 20:33:06,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30926 states. [2021-05-21 20:33:08,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30926 to 13314. [2021-05-21 20:33:08,056 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) [2021-05-21 20:33:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13314 states to 13314 states and 70814 transitions. [2021-05-21 20:33:08,096 INFO L78 Accepts]: Start accepts. Automaton has 13314 states and 70814 transitions. Word has length 33 [2021-05-21 20:33:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:08,096 INFO L482 AbstractCegarLoop]: Abstraction has 13314 states and 70814 transitions. [2021-05-21 20:33:08,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 13314 states and 70814 transitions. [2021-05-21 20:33:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:08,120 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:08,120 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] [2021-05-21 20:33:08,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-05-21 20:33:08,121 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:08,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:08,121 INFO L82 PathProgramCache]: Analyzing trace with hash -87610983, now seen corresponding path program 275 times [2021-05-21 20:33:08,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:08,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545231839] [2021-05-21 20:33:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:08,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:08,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545231839] [2021-05-21 20:33:08,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545231839] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:08,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:08,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:08,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619067883] [2021-05-21 20:33:08,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:08,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:08,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:08,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:08,247 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) [2021-05-21 20:33:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:08,481 INFO L93 Difference]: Finished difference Result 31789 states and 159563 transitions. [2021-05-21 20:33:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:08,481 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 [2021-05-21 20:33:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:08,577 INFO L225 Difference]: With dead ends: 31789 [2021-05-21 20:33:08,577 INFO L226 Difference]: Without dead ends: 31038 [2021-05-21 20:33:08,577 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:09,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31038 states. [2021-05-21 20:33:09,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31038 to 13434. [2021-05-21 20:33:09,686 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) [2021-05-21 20:33:09,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13434 states to 13434 states and 71306 transitions. [2021-05-21 20:33:09,728 INFO L78 Accepts]: Start accepts. Automaton has 13434 states and 71306 transitions. Word has length 33 [2021-05-21 20:33:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:09,728 INFO L482 AbstractCegarLoop]: Abstraction has 13434 states and 71306 transitions. [2021-05-21 20:33:09,728 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) [2021-05-21 20:33:09,728 INFO L276 IsEmpty]: Start isEmpty. Operand 13434 states and 71306 transitions. [2021-05-21 20:33:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:09,755 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:09,755 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] [2021-05-21 20:33:09,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-05-21 20:33:09,755 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:09,755 INFO L82 PathProgramCache]: Analyzing trace with hash -2091249669, now seen corresponding path program 276 times [2021-05-21 20:33:09,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:09,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227806014] [2021-05-21 20:33:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:09,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:09,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227806014] [2021-05-21 20:33:09,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227806014] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:09,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:09,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:09,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703135580] [2021-05-21 20:33:09,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:09,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:09,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:09,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:09,906 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) [2021-05-21 20:33:10,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:10,141 INFO L93 Difference]: Finished difference Result 31801 states and 159483 transitions. [2021-05-21 20:33:10,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:10,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:10,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:10,242 INFO L225 Difference]: With dead ends: 31801 [2021-05-21 20:33:10,242 INFO L226 Difference]: Without dead ends: 30858 [2021-05-21 20:33:10,243 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 [2021-05-21 20:33:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30858 states. [2021-05-21 20:33:11,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30858 to 13254. [2021-05-21 20:33:11,348 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) [2021-05-21 20:33:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13254 states to 13254 states and 70568 transitions. [2021-05-21 20:33:11,388 INFO L78 Accepts]: Start accepts. Automaton has 13254 states and 70568 transitions. Word has length 33 [2021-05-21 20:33:11,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:11,388 INFO L482 AbstractCegarLoop]: Abstraction has 13254 states and 70568 transitions. [2021-05-21 20:33:11,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 13254 states and 70568 transitions. [2021-05-21 20:33:11,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:11,414 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:11,414 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] [2021-05-21 20:33:11,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-05-21 20:33:11,414 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash 868753851, now seen corresponding path program 277 times [2021-05-21 20:33:11,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:11,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261812595] [2021-05-21 20:33:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:11,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:11,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261812595] [2021-05-21 20:33:11,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261812595] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:11,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:11,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:11,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094079119] [2021-05-21 20:33:11,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:11,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:11,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:11,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:11,558 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) [2021-05-21 20:33:11,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:11,779 INFO L93 Difference]: Finished difference Result 32319 states and 162115 transitions. [2021-05-21 20:33:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:11,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:11,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:11,871 INFO L225 Difference]: With dead ends: 32319 [2021-05-21 20:33:11,872 INFO L226 Difference]: Without dead ends: 31560 [2021-05-21 20:33:11,872 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 167.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:12,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31560 states. [2021-05-21 20:33:13,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31560 to 13536. [2021-05-21 20:33:13,062 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) [2021-05-21 20:33:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 71913 transitions. [2021-05-21 20:33:13,105 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 71913 transitions. Word has length 33 [2021-05-21 20:33:13,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:13,105 INFO L482 AbstractCegarLoop]: Abstraction has 13536 states and 71913 transitions. [2021-05-21 20:33:13,105 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) [2021-05-21 20:33:13,105 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 71913 transitions. [2021-05-21 20:33:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:13,133 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:13,133 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:13,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-05-21 20:33:13,133 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:13,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:13,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1038132805, now seen corresponding path program 278 times [2021-05-21 20:33:13,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:13,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020679197] [2021-05-21 20:33:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:13,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:13,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020679197] [2021-05-21 20:33:13,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020679197] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:13,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:13,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:13,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698714553] [2021-05-21 20:33:13,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:13,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:13,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:13,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:13,279 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) [2021-05-21 20:33:13,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:13,642 INFO L93 Difference]: Finished difference Result 32454 states and 162586 transitions. [2021-05-21 20:33:13,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:13,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:13,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:13,742 INFO L225 Difference]: With dead ends: 32454 [2021-05-21 20:33:13,742 INFO L226 Difference]: Without dead ends: 31372 [2021-05-21 20:33:13,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31372 states. [2021-05-21 20:33:14,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31372 to 13348. [2021-05-21 20:33:14,758 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) [2021-05-21 20:33:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13348 states to 13348 states and 70995 transitions. [2021-05-21 20:33:14,799 INFO L78 Accepts]: Start accepts. Automaton has 13348 states and 70995 transitions. Word has length 33 [2021-05-21 20:33:14,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:14,799 INFO L482 AbstractCegarLoop]: Abstraction has 13348 states and 70995 transitions. [2021-05-21 20:33:14,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:14,799 INFO L276 IsEmpty]: Start isEmpty. Operand 13348 states and 70995 transitions. [2021-05-21 20:33:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:14,825 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:14,825 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:14,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-05-21 20:33:14,826 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:14,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:14,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2025095907, now seen corresponding path program 279 times [2021-05-21 20:33:14,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:14,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956783323] [2021-05-21 20:33:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:14,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:14,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956783323] [2021-05-21 20:33:14,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956783323] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:14,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:14,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:14,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414067708] [2021-05-21 20:33:14,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:14,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:14,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:14,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:14,953 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) [2021-05-21 20:33:15,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:15,307 INFO L93 Difference]: Finished difference Result 32124 states and 161118 transitions. [2021-05-21 20:33:15,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:15,307 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:15,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:15,406 INFO L225 Difference]: With dead ends: 32124 [2021-05-21 20:33:15,406 INFO L226 Difference]: Without dead ends: 31365 [2021-05-21 20:33:15,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31365 states. [2021-05-21 20:33:16,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31365 to 13472. [2021-05-21 20:33:16,437 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) [2021-05-21 20:33:16,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13472 states to 13472 states and 71499 transitions. [2021-05-21 20:33:16,648 INFO L78 Accepts]: Start accepts. Automaton has 13472 states and 71499 transitions. Word has length 33 [2021-05-21 20:33:16,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:16,648 INFO L482 AbstractCegarLoop]: Abstraction has 13472 states and 71499 transitions. [2021-05-21 20:33:16,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:16,648 INFO L276 IsEmpty]: Start isEmpty. Operand 13472 states and 71499 transitions. [2021-05-21 20:33:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:16,677 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:16,677 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:16,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-05-21 20:33:16,677 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:16,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1304716869, now seen corresponding path program 280 times [2021-05-21 20:33:16,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:16,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11393242] [2021-05-21 20:33:16,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:16,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:16,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11393242] [2021-05-21 20:33:16,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11393242] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:16,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:16,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:16,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651948209] [2021-05-21 20:33:16,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:16,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:16,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:16,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:16,806 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) [2021-05-21 20:33:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:17,033 INFO L93 Difference]: Finished difference Result 32128 states and 161006 transitions. [2021-05-21 20:33:17,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:17,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:17,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:17,131 INFO L225 Difference]: With dead ends: 32128 [2021-05-21 20:33:17,131 INFO L226 Difference]: Without dead ends: 31241 [2021-05-21 20:33:17,131 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31241 states. [2021-05-21 20:33:18,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31241 to 13348. [2021-05-21 20:33:18,297 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) [2021-05-21 20:33:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13348 states to 13348 states and 70933 transitions. [2021-05-21 20:33:18,338 INFO L78 Accepts]: Start accepts. Automaton has 13348 states and 70933 transitions. Word has length 33 [2021-05-21 20:33:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:18,338 INFO L482 AbstractCegarLoop]: Abstraction has 13348 states and 70933 transitions. [2021-05-21 20:33:18,338 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) [2021-05-21 20:33:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 13348 states and 70933 transitions. [2021-05-21 20:33:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:18,364 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:18,364 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:18,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-05-21 20:33:18,364 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:18,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:18,364 INFO L82 PathProgramCache]: Analyzing trace with hash -242044485, now seen corresponding path program 281 times [2021-05-21 20:33:18,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:18,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138818108] [2021-05-21 20:33:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:18,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:18,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138818108] [2021-05-21 20:33:18,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138818108] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:18,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:18,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:18,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517829914] [2021-05-21 20:33:18,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:18,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:18,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:18,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:18,509 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) [2021-05-21 20:33:18,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:18,738 INFO L93 Difference]: Finished difference Result 32460 states and 162573 transitions. [2021-05-21 20:33:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:18,738 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:18,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:18,835 INFO L225 Difference]: With dead ends: 32460 [2021-05-21 20:33:18,835 INFO L226 Difference]: Without dead ends: 31566 [2021-05-21 20:33:18,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31566 states. [2021-05-21 20:33:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31566 to 13538. [2021-05-21 20:33:19,984 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) [2021-05-21 20:33:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13538 states to 13538 states and 71698 transitions. [2021-05-21 20:33:20,026 INFO L78 Accepts]: Start accepts. Automaton has 13538 states and 71698 transitions. Word has length 33 [2021-05-21 20:33:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:20,026 INFO L482 AbstractCegarLoop]: Abstraction has 13538 states and 71698 transitions. [2021-05-21 20:33:20,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 13538 states and 71698 transitions. [2021-05-21 20:33:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:20,051 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:20,051 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] [2021-05-21 20:33:20,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-05-21 20:33:20,052 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:20,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:20,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1416004195, now seen corresponding path program 282 times [2021-05-21 20:33:20,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:20,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456748129] [2021-05-21 20:33:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:20,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:20,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456748129] [2021-05-21 20:33:20,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456748129] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:20,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:20,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:20,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290048548] [2021-05-21 20:33:20,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:20,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:20,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:20,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:20,180 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) [2021-05-21 20:33:20,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:20,394 INFO L93 Difference]: Finished difference Result 32329 states and 161800 transitions. [2021-05-21 20:33:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:20,395 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:20,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:20,492 INFO L225 Difference]: With dead ends: 32329 [2021-05-21 20:33:20,492 INFO L226 Difference]: Without dead ends: 31282 [2021-05-21 20:33:20,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31282 states. [2021-05-21 20:33:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31282 to 13254. [2021-05-21 20:33:21,637 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) [2021-05-21 20:33:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13254 states to 13254 states and 70522 transitions. [2021-05-21 20:33:21,680 INFO L78 Accepts]: Start accepts. Automaton has 13254 states and 70522 transitions. Word has length 33 [2021-05-21 20:33:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:21,680 INFO L482 AbstractCegarLoop]: Abstraction has 13254 states and 70522 transitions. [2021-05-21 20:33:21,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 13254 states and 70522 transitions. [2021-05-21 20:33:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:21,708 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:21,708 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:21,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-05-21 20:33:21,708 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:21,708 INFO L82 PathProgramCache]: Analyzing trace with hash -961070567, now seen corresponding path program 283 times [2021-05-21 20:33:21,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:21,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756818248] [2021-05-21 20:33:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:21,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:21,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756818248] [2021-05-21 20:33:21,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756818248] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:21,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:21,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:21,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440517680] [2021-05-21 20:33:21,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:21,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:21,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:21,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:21,853 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) [2021-05-21 20:33:22,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:22,076 INFO L93 Difference]: Finished difference Result 32281 states and 161928 transitions. [2021-05-21 20:33:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:22,077 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:22,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:22,172 INFO L225 Difference]: With dead ends: 32281 [2021-05-21 20:33:22,172 INFO L226 Difference]: Without dead ends: 31530 [2021-05-21 20:33:22,172 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 173.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:23,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31530 states. [2021-05-21 20:33:23,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31530 to 13530. [2021-05-21 20:33:23,316 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) [2021-05-21 20:33:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13530 states to 13530 states and 71846 transitions. [2021-05-21 20:33:23,356 INFO L78 Accepts]: Start accepts. Automaton has 13530 states and 71846 transitions. Word has length 33 [2021-05-21 20:33:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:23,357 INFO L482 AbstractCegarLoop]: Abstraction has 13530 states and 71846 transitions. [2021-05-21 20:33:23,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:23,357 INFO L276 IsEmpty]: Start isEmpty. Operand 13530 states and 71846 transitions. [2021-05-21 20:33:23,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:23,382 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:23,382 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:23,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-05-21 20:33:23,382 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:23,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:23,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1578593925, now seen corresponding path program 284 times [2021-05-21 20:33:23,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:23,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387161951] [2021-05-21 20:33:23,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:23,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:23,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387161951] [2021-05-21 20:33:23,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387161951] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:23,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:23,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:23,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208400717] [2021-05-21 20:33:23,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:23,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:23,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:23,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:23,524 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) [2021-05-21 20:33:23,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:23,909 INFO L93 Difference]: Finished difference Result 32424 states and 162431 transitions. [2021-05-21 20:33:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:23,909 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 [2021-05-21 20:33:23,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:24,015 INFO L225 Difference]: With dead ends: 32424 [2021-05-21 20:33:24,015 INFO L226 Difference]: Without dead ends: 31346 [2021-05-21 20:33:24,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 146.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:24,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31346 states. [2021-05-21 20:33:25,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31346 to 13346. [2021-05-21 20:33:25,046 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) [2021-05-21 20:33:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 70942 transitions. [2021-05-21 20:33:25,086 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 70942 transitions. Word has length 33 [2021-05-21 20:33:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:25,087 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 70942 transitions. [2021-05-21 20:33:25,087 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) [2021-05-21 20:33:25,087 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 70942 transitions. [2021-05-21 20:33:25,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:25,114 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:25,114 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] [2021-05-21 20:33:25,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-05-21 20:33:25,114 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:25,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:25,114 INFO L82 PathProgramCache]: Analyzing trace with hash 440046971, now seen corresponding path program 285 times [2021-05-21 20:33:25,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:25,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286527696] [2021-05-21 20:33:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:25,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:25,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286527696] [2021-05-21 20:33:25,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286527696] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:25,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:25,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:25,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233070968] [2021-05-21 20:33:25,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:25,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:25,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:25,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:25,242 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) [2021-05-21 20:33:25,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:25,592 INFO L93 Difference]: Finished difference Result 32086 states and 160933 transitions. [2021-05-21 20:33:25,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:25,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:25,683 INFO L225 Difference]: With dead ends: 32086 [2021-05-21 20:33:25,683 INFO L226 Difference]: Without dead ends: 31335 [2021-05-21 20:33:25,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:26,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31335 states. [2021-05-21 20:33:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31335 to 13466. [2021-05-21 20:33:26,726 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) [2021-05-21 20:33:26,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 71434 transitions. [2021-05-21 20:33:26,944 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 71434 transitions. Word has length 33 [2021-05-21 20:33:26,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:26,944 INFO L482 AbstractCegarLoop]: Abstraction has 13466 states and 71434 transitions. [2021-05-21 20:33:26,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:26,944 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 71434 transitions. [2021-05-21 20:33:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:26,973 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:26,973 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:26,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-05-21 20:33:26,973 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:26,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:26,973 INFO L82 PathProgramCache]: Analyzing trace with hash 693387387, now seen corresponding path program 286 times [2021-05-21 20:33:26,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:26,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743297348] [2021-05-21 20:33:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:27,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:27,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743297348] [2021-05-21 20:33:27,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743297348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:27,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:27,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:27,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304073364] [2021-05-21 20:33:27,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:27,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:27,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:27,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:27,102 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) [2021-05-21 20:33:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:27,315 INFO L93 Difference]: Finished difference Result 32098 states and 160853 transitions. [2021-05-21 20:33:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:27,315 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 [2021-05-21 20:33:27,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:27,406 INFO L225 Difference]: With dead ends: 32098 [2021-05-21 20:33:27,406 INFO L226 Difference]: Without dead ends: 31215 [2021-05-21 20:33:27,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:28,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31215 states. [2021-05-21 20:33:28,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31215 to 13346. [2021-05-21 20:33:28,577 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) [2021-05-21 20:33:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 70882 transitions. [2021-05-21 20:33:28,617 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 70882 transitions. Word has length 33 [2021-05-21 20:33:28,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:28,617 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 70882 transitions. [2021-05-21 20:33:28,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:28,617 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 70882 transitions. [2021-05-21 20:33:28,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:28,643 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:28,643 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:28,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-05-21 20:33:28,643 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:28,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:28,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1364944733, now seen corresponding path program 287 times [2021-05-21 20:33:28,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:28,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112315149] [2021-05-21 20:33:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:28,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:28,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112315149] [2021-05-21 20:33:28,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112315149] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:28,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:28,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:28,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886250740] [2021-05-21 20:33:28,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:28,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:28,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:28,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:28,772 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) [2021-05-21 20:33:28,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:28,984 INFO L93 Difference]: Finished difference Result 32442 states and 162462 transitions. [2021-05-21 20:33:28,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:28,984 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:29,080 INFO L225 Difference]: With dead ends: 32442 [2021-05-21 20:33:29,080 INFO L226 Difference]: Without dead ends: 31548 [2021-05-21 20:33:29,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:29,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31548 states. [2021-05-21 20:33:30,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31548 to 13536. [2021-05-21 20:33:30,256 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) [2021-05-21 20:33:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 71647 transitions. [2021-05-21 20:33:30,296 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 71647 transitions. Word has length 33 [2021-05-21 20:33:30,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:30,296 INFO L482 AbstractCegarLoop]: Abstraction has 13536 states and 71647 transitions. [2021-05-21 20:33:30,296 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) [2021-05-21 20:33:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 71647 transitions. [2021-05-21 20:33:30,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:30,322 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:30,322 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] [2021-05-21 20:33:30,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-05-21 20:33:30,322 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:30,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:30,323 INFO L82 PathProgramCache]: Analyzing trace with hash -668067909, now seen corresponding path program 288 times [2021-05-21 20:33:30,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:30,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260608156] [2021-05-21 20:33:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:30,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:30,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260608156] [2021-05-21 20:33:30,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260608156] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:30,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:30,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:30,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540715267] [2021-05-21 20:33:30,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:30,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:30,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:30,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:30,451 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) [2021-05-21 20:33:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:30,674 INFO L93 Difference]: Finished difference Result 32311 states and 161689 transitions. [2021-05-21 20:33:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:30,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:30,770 INFO L225 Difference]: With dead ends: 32311 [2021-05-21 20:33:30,770 INFO L226 Difference]: Without dead ends: 31220 [2021-05-21 20:33:30,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31220 states. [2021-05-21 20:33:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31220 to 13208. [2021-05-21 20:33:31,926 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) [2021-05-21 20:33:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 70342 transitions. [2021-05-21 20:33:31,966 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 70342 transitions. Word has length 33 [2021-05-21 20:33:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:31,966 INFO L482 AbstractCegarLoop]: Abstraction has 13208 states and 70342 transitions. [2021-05-21 20:33:31,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:31,966 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 70342 transitions. [2021-05-21 20:33:31,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:31,991 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:31,991 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:31,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-05-21 20:33:31,991 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:31,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1116380701, now seen corresponding path program 289 times [2021-05-21 20:33:31,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:31,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840277048] [2021-05-21 20:33:31,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:32,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:32,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840277048] [2021-05-21 20:33:32,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840277048] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:32,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:32,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:32,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049245764] [2021-05-21 20:33:32,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:32,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:32,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:32,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:32,119 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) [2021-05-21 20:33:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:32,341 INFO L93 Difference]: Finished difference Result 31362 states and 157565 transitions. [2021-05-21 20:33:32,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:32,341 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 [2021-05-21 20:33:32,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:32,429 INFO L225 Difference]: With dead ends: 31362 [2021-05-21 20:33:32,429 INFO L226 Difference]: Without dead ends: 30603 [2021-05-21 20:33:32,429 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:33,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30603 states. [2021-05-21 20:33:33,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30603 to 13418. [2021-05-21 20:33:33,582 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) [2021-05-21 20:33:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71353 transitions. [2021-05-21 20:33:33,624 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71353 transitions. Word has length 33 [2021-05-21 20:33:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:33,624 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71353 transitions. [2021-05-21 20:33:33,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71353 transitions. [2021-05-21 20:33:33,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:33,652 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:33,652 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:33,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-05-21 20:33:33,652 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:33,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:33,652 INFO L82 PathProgramCache]: Analyzing trace with hash 269583739, now seen corresponding path program 290 times [2021-05-21 20:33:33,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:33,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580602136] [2021-05-21 20:33:33,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:33,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:33,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580602136] [2021-05-21 20:33:33,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580602136] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:33,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:33,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:33,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084431476] [2021-05-21 20:33:33,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:33,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:33,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:33,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:33,779 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) [2021-05-21 20:33:34,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:34,160 INFO L93 Difference]: Finished difference Result 31354 states and 157417 transitions. [2021-05-21 20:33:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:34,160 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:34,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:34,263 INFO L225 Difference]: With dead ends: 31354 [2021-05-21 20:33:34,263 INFO L226 Difference]: Without dead ends: 30483 [2021-05-21 20:33:34,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30483 states. [2021-05-21 20:33:35,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30483 to 13298. [2021-05-21 20:33:35,295 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) [2021-05-21 20:33:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70801 transitions. [2021-05-21 20:33:35,339 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70801 transitions. Word has length 33 [2021-05-21 20:33:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:35,339 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70801 transitions. [2021-05-21 20:33:35,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70801 transitions. [2021-05-21 20:33:35,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:35,367 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:35,367 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:35,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-05-21 20:33:35,367 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:35,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:35,367 INFO L82 PathProgramCache]: Analyzing trace with hash -774118725, now seen corresponding path program 291 times [2021-05-21 20:33:35,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:35,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157234869] [2021-05-21 20:33:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:35,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:35,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:35,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157234869] [2021-05-21 20:33:35,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157234869] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:35,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:35,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:35,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46854909] [2021-05-21 20:33:35,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:35,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:35,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:35,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:35,496 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) [2021-05-21 20:33:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:35,828 INFO L93 Difference]: Finished difference Result 31380 states and 157566 transitions. [2021-05-21 20:33:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:35,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:35,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:35,926 INFO L225 Difference]: With dead ends: 31380 [2021-05-21 20:33:35,926 INFO L226 Difference]: Without dead ends: 30621 [2021-05-21 20:33:35,927 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:36,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30621 states. [2021-05-21 20:33:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30621 to 13422. [2021-05-21 20:33:36,951 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) [2021-05-21 20:33:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13422 states to 13422 states and 71305 transitions. [2021-05-21 20:33:37,156 INFO L78 Accepts]: Start accepts. Automaton has 13422 states and 71305 transitions. Word has length 33 [2021-05-21 20:33:37,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:37,157 INFO L482 AbstractCegarLoop]: Abstraction has 13422 states and 71305 transitions. [2021-05-21 20:33:37,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 13422 states and 71305 transitions. [2021-05-21 20:33:37,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:37,186 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:37,186 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:37,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-05-21 20:33:37,186 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:37,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:37,186 INFO L82 PathProgramCache]: Analyzing trace with hash -348378437, now seen corresponding path program 292 times [2021-05-21 20:33:37,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:37,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164202537] [2021-05-21 20:33:37,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:37,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:37,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164202537] [2021-05-21 20:33:37,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164202537] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:37,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:37,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:37,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047201555] [2021-05-21 20:33:37,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:37,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:37,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:37,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:37,313 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) [2021-05-21 20:33:37,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:37,525 INFO L93 Difference]: Finished difference Result 31386 states and 157459 transitions. [2021-05-21 20:33:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:37,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:37,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:37,613 INFO L225 Difference]: With dead ends: 31386 [2021-05-21 20:33:37,613 INFO L226 Difference]: Without dead ends: 30497 [2021-05-21 20:33:37,614 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:38,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30497 states. [2021-05-21 20:33:38,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30497 to 13298. [2021-05-21 20:33:38,777 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) [2021-05-21 20:33:38,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70741 transitions. [2021-05-21 20:33:38,817 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70741 transitions. Word has length 33 [2021-05-21 20:33:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:38,817 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70741 transitions. [2021-05-21 20:33:38,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:38,817 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70741 transitions. [2021-05-21 20:33:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:38,843 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:38,843 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:38,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-05-21 20:33:38,844 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:38,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:38,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1630866791, now seen corresponding path program 293 times [2021-05-21 20:33:38,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:38,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025627683] [2021-05-21 20:33:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:38,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:38,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025627683] [2021-05-21 20:33:38,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025627683] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:38,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:38,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:38,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059815755] [2021-05-21 20:33:38,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:38,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:38,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:38,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:38,988 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) [2021-05-21 20:33:39,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:39,216 INFO L93 Difference]: Finished difference Result 31360 states and 157434 transitions. [2021-05-21 20:33:39,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:39,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:39,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:39,308 INFO L225 Difference]: With dead ends: 31360 [2021-05-21 20:33:39,308 INFO L226 Difference]: Without dead ends: 30609 [2021-05-21 20:33:39,309 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 [2021-05-21 20:33:40,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30609 states. [2021-05-21 20:33:40,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30609 to 13418. [2021-05-21 20:33:40,414 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) [2021-05-21 20:33:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71233 transitions. [2021-05-21 20:33:40,456 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71233 transitions. Word has length 33 [2021-05-21 20:33:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:40,456 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71233 transitions. [2021-05-21 20:33:40,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71233 transitions. [2021-05-21 20:33:40,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:40,483 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:40,483 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:40,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-05-21 20:33:40,483 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:40,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1353519483, now seen corresponding path program 294 times [2021-05-21 20:33:40,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:40,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997125203] [2021-05-21 20:33:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:40,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:40,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997125203] [2021-05-21 20:33:40,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997125203] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:40,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:40,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:40,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354847902] [2021-05-21 20:33:40,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:40,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:40,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:40,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:40,624 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) [2021-05-21 20:33:40,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:40,864 INFO L93 Difference]: Finished difference Result 31374 states and 157359 transitions. [2021-05-21 20:33:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:40,864 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:40,953 INFO L225 Difference]: With dead ends: 31374 [2021-05-21 20:33:40,954 INFO L226 Difference]: Without dead ends: 30429 [2021-05-21 20:33:40,954 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 [2021-05-21 20:33:41,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30429 states. [2021-05-21 20:33:42,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30429 to 13238. [2021-05-21 20:33:42,071 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) [2021-05-21 20:33:42,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13238 states to 13238 states and 70495 transitions. [2021-05-21 20:33:42,110 INFO L78 Accepts]: Start accepts. Automaton has 13238 states and 70495 transitions. Word has length 33 [2021-05-21 20:33:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:42,110 INFO L482 AbstractCegarLoop]: Abstraction has 13238 states and 70495 transitions. [2021-05-21 20:33:42,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:42,110 INFO L276 IsEmpty]: Start isEmpty. Operand 13238 states and 70495 transitions. [2021-05-21 20:33:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:42,136 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:42,136 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:42,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-05-21 20:33:42,136 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:42,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2140276475, now seen corresponding path program 295 times [2021-05-21 20:33:42,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:42,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63450478] [2021-05-21 20:33:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:42,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:42,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63450478] [2021-05-21 20:33:42,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63450478] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:42,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:42,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:42,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114620284] [2021-05-21 20:33:42,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:42,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:42,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:42,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:42,273 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) [2021-05-21 20:33:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:42,486 INFO L93 Difference]: Finished difference Result 31360 states and 157530 transitions. [2021-05-21 20:33:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:42,487 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:42,578 INFO L225 Difference]: With dead ends: 31360 [2021-05-21 20:33:42,578 INFO L226 Difference]: Without dead ends: 30601 [2021-05-21 20:33:42,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30601 states. [2021-05-21 20:33:43,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30601 to 13418. [2021-05-21 20:33:43,760 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) [2021-05-21 20:33:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71323 transitions. [2021-05-21 20:33:43,801 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71323 transitions. Word has length 33 [2021-05-21 20:33:43,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:43,801 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71323 transitions. [2021-05-21 20:33:43,801 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) [2021-05-21 20:33:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71323 transitions. [2021-05-21 20:33:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:43,827 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:43,827 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] [2021-05-21 20:33:43,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-05-21 20:33:43,827 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:43,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:43,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1293479513, now seen corresponding path program 296 times [2021-05-21 20:33:43,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:43,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738237064] [2021-05-21 20:33:43,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:43,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:43,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738237064] [2021-05-21 20:33:43,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738237064] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:43,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:43,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:43,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765947683] [2021-05-21 20:33:43,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:43,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:43,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:43,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:43,962 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) [2021-05-21 20:33:44,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:44,186 INFO L93 Difference]: Finished difference Result 31352 states and 157382 transitions. [2021-05-21 20:33:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:44,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:44,443 INFO L225 Difference]: With dead ends: 31352 [2021-05-21 20:33:44,443 INFO L226 Difference]: Without dead ends: 30481 [2021-05-21 20:33:44,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 154.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:45,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30481 states. [2021-05-21 20:33:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30481 to 13298. [2021-05-21 20:33:45,454 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) [2021-05-21 20:33:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70771 transitions. [2021-05-21 20:33:45,495 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70771 transitions. Word has length 33 [2021-05-21 20:33:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:45,496 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70771 transitions. [2021-05-21 20:33:45,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70771 transitions. [2021-05-21 20:33:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:45,523 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:45,523 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:45,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-05-21 20:33:45,523 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:45,524 INFO L82 PathProgramCache]: Analyzing trace with hash -989729989, now seen corresponding path program 297 times [2021-05-21 20:33:45,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:45,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464504737] [2021-05-21 20:33:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:45,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:45,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464504737] [2021-05-21 20:33:45,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464504737] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:45,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:45,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:45,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562601740] [2021-05-21 20:33:45,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:45,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:45,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:45,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:45,674 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) [2021-05-21 20:33:45,937 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2021-05-21 20:33:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:46,045 INFO L93 Difference]: Finished difference Result 31376 states and 157526 transitions. [2021-05-21 20:33:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:46,045 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 [2021-05-21 20:33:46,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:46,143 INFO L225 Difference]: With dead ends: 31376 [2021-05-21 20:33:46,143 INFO L226 Difference]: Without dead ends: 30617 [2021-05-21 20:33:46,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 294.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:46,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30617 states. [2021-05-21 20:33:47,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30617 to 13422. [2021-05-21 20:33:47,150 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) [2021-05-21 20:33:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13422 states to 13422 states and 71275 transitions. [2021-05-21 20:33:47,192 INFO L78 Accepts]: Start accepts. Automaton has 13422 states and 71275 transitions. Word has length 33 [2021-05-21 20:33:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:47,192 INFO L482 AbstractCegarLoop]: Abstraction has 13422 states and 71275 transitions. [2021-05-21 20:33:47,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 13422 states and 71275 transitions. [2021-05-21 20:33:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:47,320 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:47,320 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:47,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-05-21 20:33:47,320 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:47,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1768637243, now seen corresponding path program 298 times [2021-05-21 20:33:47,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:47,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508464316] [2021-05-21 20:33:47,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:47,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:47,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508464316] [2021-05-21 20:33:47,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508464316] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:47,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:47,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:47,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254164431] [2021-05-21 20:33:47,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:47,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:47,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:47,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:47,447 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) [2021-05-21 20:33:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:47,675 INFO L93 Difference]: Finished difference Result 31380 states and 157414 transitions. [2021-05-21 20:33:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:47,675 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 [2021-05-21 20:33:47,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:47,765 INFO L225 Difference]: With dead ends: 31380 [2021-05-21 20:33:47,766 INFO L226 Difference]: Without dead ends: 30493 [2021-05-21 20:33:47,766 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30493 states. [2021-05-21 20:33:48,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30493 to 13298. [2021-05-21 20:33:48,901 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) [2021-05-21 20:33:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70711 transitions. [2021-05-21 20:33:48,942 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70711 transitions. Word has length 33 [2021-05-21 20:33:48,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:48,942 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70711 transitions. [2021-05-21 20:33:48,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70711 transitions. [2021-05-21 20:33:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:48,968 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:48,968 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:48,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-05-21 20:33:48,968 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:48,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:48,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1846478055, now seen corresponding path program 299 times [2021-05-21 20:33:48,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:48,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641196586] [2021-05-21 20:33:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:49,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:49,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641196586] [2021-05-21 20:33:49,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641196586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:49,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:49,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:49,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270839627] [2021-05-21 20:33:49,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:49,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:49,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:49,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:49,096 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) [2021-05-21 20:33:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:49,328 INFO L93 Difference]: Finished difference Result 31356 states and 157394 transitions. [2021-05-21 20:33:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:49,328 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 [2021-05-21 20:33:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:49,418 INFO L225 Difference]: With dead ends: 31356 [2021-05-21 20:33:49,419 INFO L226 Difference]: Without dead ends: 30605 [2021-05-21 20:33:49,419 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30605 states. [2021-05-21 20:33:50,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30605 to 13418. [2021-05-21 20:33:50,542 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) [2021-05-21 20:33:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71203 transitions. [2021-05-21 20:33:50,583 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71203 transitions. Word has length 33 [2021-05-21 20:33:50,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:50,584 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71203 transitions. [2021-05-21 20:33:50,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:50,584 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71203 transitions. [2021-05-21 20:33:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:50,610 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:50,610 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:33:50,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-05-21 20:33:50,610 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:50,611 INFO L82 PathProgramCache]: Analyzing trace with hash 444850555, now seen corresponding path program 300 times [2021-05-21 20:33:50,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:50,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155201532] [2021-05-21 20:33:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:50,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:50,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155201532] [2021-05-21 20:33:50,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155201532] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:50,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:50,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:50,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763833739] [2021-05-21 20:33:50,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:50,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:50,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:50,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:50,737 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) [2021-05-21 20:33:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:50,963 INFO L93 Difference]: Finished difference Result 31368 states and 157314 transitions. [2021-05-21 20:33:50,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:50,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:50,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:51,055 INFO L225 Difference]: With dead ends: 31368 [2021-05-21 20:33:51,055 INFO L226 Difference]: Without dead ends: 30425 [2021-05-21 20:33:51,055 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30425 states. [2021-05-21 20:33:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30425 to 13238. [2021-05-21 20:33:52,190 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) [2021-05-21 20:33:52,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13238 states to 13238 states and 70465 transitions. [2021-05-21 20:33:52,230 INFO L78 Accepts]: Start accepts. Automaton has 13238 states and 70465 transitions. Word has length 33 [2021-05-21 20:33:52,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:52,230 INFO L482 AbstractCegarLoop]: Abstraction has 13238 states and 70465 transitions. [2021-05-21 20:33:52,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 13238 states and 70465 transitions. [2021-05-21 20:33:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:52,256 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:52,256 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] [2021-05-21 20:33:52,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-05-21 20:33:52,256 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:52,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:52,256 INFO L82 PathProgramCache]: Analyzing trace with hash -670076839, now seen corresponding path program 301 times [2021-05-21 20:33:52,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:52,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367667477] [2021-05-21 20:33:52,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:52,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:52,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367667477] [2021-05-21 20:33:52,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367667477] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:52,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:52,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:52,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858381437] [2021-05-21 20:33:52,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:52,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:52,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:52,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:52,383 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) [2021-05-21 20:33:52,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:52,604 INFO L93 Difference]: Finished difference Result 31404 states and 157654 transitions. [2021-05-21 20:33:52,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:52,604 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 [2021-05-21 20:33:52,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:52,699 INFO L225 Difference]: With dead ends: 31404 [2021-05-21 20:33:52,699 INFO L226 Difference]: Without dead ends: 30645 [2021-05-21 20:33:52,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:53,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30645 states. [2021-05-21 20:33:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30645 to 13424. [2021-05-21 20:33:53,826 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) [2021-05-21 20:33:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13424 states to 13424 states and 71314 transitions. [2021-05-21 20:33:53,867 INFO L78 Accepts]: Start accepts. Automaton has 13424 states and 71314 transitions. Word has length 33 [2021-05-21 20:33:53,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:53,867 INFO L482 AbstractCegarLoop]: Abstraction has 13424 states and 71314 transitions. [2021-05-21 20:33:53,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:53,867 INFO L276 IsEmpty]: Start isEmpty. Operand 13424 states and 71314 transitions. [2021-05-21 20:33:53,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:53,893 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:53,893 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] [2021-05-21 20:33:53,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-05-21 20:33:53,893 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:53,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:53,893 INFO L82 PathProgramCache]: Analyzing trace with hash -244336551, now seen corresponding path program 302 times [2021-05-21 20:33:53,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:53,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136638555] [2021-05-21 20:33:53,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:54,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:54,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136638555] [2021-05-21 20:33:54,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136638555] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:54,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:54,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:54,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061940091] [2021-05-21 20:33:54,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:54,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:54,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:54,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:54,020 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) [2021-05-21 20:33:54,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:54,228 INFO L93 Difference]: Finished difference Result 31410 states and 157547 transitions. [2021-05-21 20:33:54,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:54,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:54,318 INFO L225 Difference]: With dead ends: 31410 [2021-05-21 20:33:54,318 INFO L226 Difference]: Without dead ends: 30521 [2021-05-21 20:33:54,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:55,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30521 states. [2021-05-21 20:33:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30521 to 13300. [2021-05-21 20:33:55,457 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) [2021-05-21 20:33:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13300 states to 13300 states and 70748 transitions. [2021-05-21 20:33:55,498 INFO L78 Accepts]: Start accepts. Automaton has 13300 states and 70748 transitions. Word has length 33 [2021-05-21 20:33:55,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:55,498 INFO L482 AbstractCegarLoop]: Abstraction has 13300 states and 70748 transitions. [2021-05-21 20:33:55,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:55,498 INFO L276 IsEmpty]: Start isEmpty. Operand 13300 states and 70748 transitions. [2021-05-21 20:33:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:55,524 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:55,524 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] [2021-05-21 20:33:55,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-05-21 20:33:55,524 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:55,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:55,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1039524923, now seen corresponding path program 303 times [2021-05-21 20:33:55,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:55,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317792068] [2021-05-21 20:33:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:55,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:55,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317792068] [2021-05-21 20:33:55,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317792068] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:55,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:55,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:55,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283227965] [2021-05-21 20:33:55,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:55,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:55,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:55,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:55,652 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) [2021-05-21 20:33:55,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:55,995 INFO L93 Difference]: Finished difference Result 31402 states and 157587 transitions. [2021-05-21 20:33:55,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:55,996 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:55,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:56,088 INFO L225 Difference]: With dead ends: 31402 [2021-05-21 20:33:56,089 INFO L226 Difference]: Without dead ends: 30643 [2021-05-21 20:33:56,089 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 [2021-05-21 20:33:56,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30643 states. [2021-05-21 20:33:57,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30643 to 13424. [2021-05-21 20:33:57,097 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) [2021-05-21 20:33:57,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13424 states to 13424 states and 71252 transitions. [2021-05-21 20:33:57,138 INFO L78 Accepts]: Start accepts. Automaton has 13424 states and 71252 transitions. Word has length 33 [2021-05-21 20:33:57,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:57,138 INFO L482 AbstractCegarLoop]: Abstraction has 13424 states and 71252 transitions. [2021-05-21 20:33:57,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:33:57,138 INFO L276 IsEmpty]: Start isEmpty. Operand 13424 states and 71252 transitions. [2021-05-21 20:33:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:57,164 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:57,164 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] [2021-05-21 20:33:57,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-05-21 20:33:57,164 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:57,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:57,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1769855065, now seen corresponding path program 304 times [2021-05-21 20:33:57,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:57,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538109276] [2021-05-21 20:33:57,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:57,371 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-21 20:33:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:57,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:57,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538109276] [2021-05-21 20:33:57,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538109276] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:57,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:57,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:57,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249823976] [2021-05-21 20:33:57,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:57,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:57,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:57,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:57,397 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) [2021-05-21 20:33:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:57,639 INFO L93 Difference]: Finished difference Result 31406 states and 157475 transitions. [2021-05-21 20:33:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:57,640 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 [2021-05-21 20:33:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:57,729 INFO L225 Difference]: With dead ends: 31406 [2021-05-21 20:33:57,729 INFO L226 Difference]: Without dead ends: 30519 [2021-05-21 20:33:57,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 257.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:33:58,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30519 states. [2021-05-21 20:33:58,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30519 to 13300. [2021-05-21 20:33:58,745 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) [2021-05-21 20:33:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13300 states to 13300 states and 70686 transitions. [2021-05-21 20:33:58,936 INFO L78 Accepts]: Start accepts. Automaton has 13300 states and 70686 transitions. Word has length 33 [2021-05-21 20:33:58,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:33:58,936 INFO L482 AbstractCegarLoop]: Abstraction has 13300 states and 70686 transitions. [2021-05-21 20:33:58,936 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) [2021-05-21 20:33:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 13300 states and 70686 transitions. [2021-05-21 20:33:58,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:33:58,963 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:33:58,963 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] [2021-05-21 20:33:58,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-05-21 20:33:58,963 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:33:58,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:33:58,963 INFO L82 PathProgramCache]: Analyzing trace with hash 551751769, now seen corresponding path program 305 times [2021-05-21 20:33:58,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:33:58,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886915318] [2021-05-21 20:33:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:33:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:33:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:33:59,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:33:59,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886915318] [2021-05-21 20:33:59,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886915318] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:33:59,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:33:59,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:33:59,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369816956] [2021-05-21 20:33:59,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:33:59,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:33:59,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:33:59,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:33:59,091 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) [2021-05-21 20:33:59,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:33:59,311 INFO L93 Difference]: Finished difference Result 31416 states and 157566 transitions. [2021-05-21 20:33:59,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:33:59,312 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:33:59,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:33:59,407 INFO L225 Difference]: With dead ends: 31416 [2021-05-21 20:33:59,407 INFO L226 Difference]: Without dead ends: 30651 [2021-05-21 20:33:59,407 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:00,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30651 states. [2021-05-21 20:34:00,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30651 to 13426. [2021-05-21 20:34:00,521 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) [2021-05-21 20:34:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13426 states to 13426 states and 71195 transitions. [2021-05-21 20:34:00,561 INFO L78 Accepts]: Start accepts. Automaton has 13426 states and 71195 transitions. Word has length 33 [2021-05-21 20:34:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:00,561 INFO L482 AbstractCegarLoop]: Abstraction has 13426 states and 71195 transitions. [2021-05-21 20:34:00,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 13426 states and 71195 transitions. [2021-05-21 20:34:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:00,587 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:00,587 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:00,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-05-21 20:34:00,587 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:00,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:00,587 INFO L82 PathProgramCache]: Analyzing trace with hash 70849723, now seen corresponding path program 306 times [2021-05-21 20:34:00,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:00,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128965617] [2021-05-21 20:34:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:00,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:00,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128965617] [2021-05-21 20:34:00,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128965617] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:00,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:00,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:00,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77148226] [2021-05-21 20:34:00,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:00,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:00,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:00,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:00,715 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) [2021-05-21 20:34:00,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:00,942 INFO L93 Difference]: Finished difference Result 31414 states and 157435 transitions. [2021-05-21 20:34:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:00,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:01,034 INFO L225 Difference]: With dead ends: 31414 [2021-05-21 20:34:01,034 INFO L226 Difference]: Without dead ends: 30463 [2021-05-21 20:34:01,034 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:01,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30463 states. [2021-05-21 20:34:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30463 to 13238. [2021-05-21 20:34:02,150 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) [2021-05-21 20:34:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13238 states to 13238 states and 70435 transitions. [2021-05-21 20:34:02,190 INFO L78 Accepts]: Start accepts. Automaton has 13238 states and 70435 transitions. Word has length 33 [2021-05-21 20:34:02,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:02,190 INFO L482 AbstractCegarLoop]: Abstraction has 13238 states and 70435 transitions. [2021-05-21 20:34:02,190 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) [2021-05-21 20:34:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 13238 states and 70435 transitions. [2021-05-21 20:34:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:02,215 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:02,215 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:02,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-05-21 20:34:02,215 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:02,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:02,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1795066039, now seen corresponding path program 307 times [2021-05-21 20:34:02,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:02,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973871820] [2021-05-21 20:34:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:02,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:02,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973871820] [2021-05-21 20:34:02,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973871820] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:02,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:02,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:02,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090684937] [2021-05-21 20:34:02,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:02,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:02,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:02,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:02,357 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) [2021-05-21 20:34:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:02,574 INFO L93 Difference]: Finished difference Result 31366 states and 157483 transitions. [2021-05-21 20:34:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:02,574 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:02,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:02,674 INFO L225 Difference]: With dead ends: 31366 [2021-05-21 20:34:02,674 INFO L226 Difference]: Without dead ends: 30615 [2021-05-21 20:34:02,674 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 [2021-05-21 20:34:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30615 states. [2021-05-21 20:34:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30615 to 13418. [2021-05-21 20:34:03,827 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) [2021-05-21 20:34:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71263 transitions. [2021-05-21 20:34:03,868 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71263 transitions. Word has length 33 [2021-05-21 20:34:03,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:03,868 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71263 transitions. [2021-05-21 20:34:03,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71263 transitions. [2021-05-21 20:34:03,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:03,893 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:03,893 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] [2021-05-21 20:34:03,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-05-21 20:34:03,893 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:03,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:03,894 INFO L82 PathProgramCache]: Analyzing trace with hash 484485017, now seen corresponding path program 308 times [2021-05-21 20:34:03,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:03,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466653916] [2021-05-21 20:34:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:04,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:04,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466653916] [2021-05-21 20:34:04,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466653916] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:04,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:04,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:04,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181291151] [2021-05-21 20:34:04,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:04,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:04,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:04,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:04,038 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) [2021-05-21 20:34:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:04,275 INFO L93 Difference]: Finished difference Result 31380 states and 157408 transitions. [2021-05-21 20:34:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:04,275 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:04,372 INFO L225 Difference]: With dead ends: 31380 [2021-05-21 20:34:04,372 INFO L226 Difference]: Without dead ends: 30495 [2021-05-21 20:34:04,372 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 [2021-05-21 20:34:05,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30495 states. [2021-05-21 20:34:05,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30495 to 13298. [2021-05-21 20:34:05,504 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) [2021-05-21 20:34:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70711 transitions. [2021-05-21 20:34:05,546 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70711 transitions. Word has length 33 [2021-05-21 20:34:05,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:05,546 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70711 transitions. [2021-05-21 20:34:05,546 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) [2021-05-21 20:34:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70711 transitions. [2021-05-21 20:34:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:05,573 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:05,573 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] [2021-05-21 20:34:05,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-05-21 20:34:05,573 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:05,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:05,573 INFO L82 PathProgramCache]: Analyzing trace with hash -790299495, now seen corresponding path program 309 times [2021-05-21 20:34:05,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:05,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759520254] [2021-05-21 20:34:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:05,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:05,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759520254] [2021-05-21 20:34:05,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759520254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:05,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:05,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:05,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562871597] [2021-05-21 20:34:05,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:05,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:05,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:05,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:05,710 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) [2021-05-21 20:34:06,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:06,082 INFO L93 Difference]: Finished difference Result 31364 states and 157418 transitions. [2021-05-21 20:34:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:06,083 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 [2021-05-21 20:34:06,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:06,176 INFO L225 Difference]: With dead ends: 31364 [2021-05-21 20:34:06,177 INFO L226 Difference]: Without dead ends: 30613 [2021-05-21 20:34:06,177 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 158.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30613 states. [2021-05-21 20:34:07,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30613 to 13418. [2021-05-21 20:34:07,206 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) [2021-05-21 20:34:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 71203 transitions. [2021-05-21 20:34:07,246 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 71203 transitions. Word has length 33 [2021-05-21 20:34:07,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:07,246 INFO L482 AbstractCegarLoop]: Abstraction has 13418 states and 71203 transitions. [2021-05-21 20:34:07,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:07,246 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 71203 transitions. [2021-05-21 20:34:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:07,272 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:07,272 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:07,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-05-21 20:34:07,272 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:07,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:07,273 INFO L82 PathProgramCache]: Analyzing trace with hash -527007975, now seen corresponding path program 310 times [2021-05-21 20:34:07,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:07,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454217129] [2021-05-21 20:34:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:07,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:07,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454217129] [2021-05-21 20:34:07,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454217129] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:07,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:07,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:07,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148386730] [2021-05-21 20:34:07,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:07,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:07,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:07,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:07,399 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) [2021-05-21 20:34:07,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:07,717 INFO L93 Difference]: Finished difference Result 31376 states and 157338 transitions. [2021-05-21 20:34:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:07,717 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:07,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:07,810 INFO L225 Difference]: With dead ends: 31376 [2021-05-21 20:34:07,810 INFO L226 Difference]: Without dead ends: 30493 [2021-05-21 20:34:07,810 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:08,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30493 states. [2021-05-21 20:34:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30493 to 13298. [2021-05-21 20:34:08,821 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) [2021-05-21 20:34:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13298 states to 13298 states and 70651 transitions. [2021-05-21 20:34:09,028 INFO L78 Accepts]: Start accepts. Automaton has 13298 states and 70651 transitions. Word has length 33 [2021-05-21 20:34:09,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:09,028 INFO L482 AbstractCegarLoop]: Abstraction has 13298 states and 70651 transitions. [2021-05-21 20:34:09,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:09,029 INFO L276 IsEmpty]: Start isEmpty. Operand 13298 states and 70651 transitions. [2021-05-21 20:34:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:09,056 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:09,056 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:09,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-05-21 20:34:09,057 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:09,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:09,057 INFO L82 PathProgramCache]: Analyzing trace with hash -866943621, now seen corresponding path program 311 times [2021-05-21 20:34:09,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:09,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624444558] [2021-05-21 20:34:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:09,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:09,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624444558] [2021-05-21 20:34:09,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624444558] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:09,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:09,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:09,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515723186] [2021-05-21 20:34:09,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:09,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:09,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:09,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:09,185 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) [2021-05-21 20:34:09,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:09,407 INFO L93 Difference]: Finished difference Result 31398 states and 157471 transitions. [2021-05-21 20:34:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:09,407 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 [2021-05-21 20:34:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:09,499 INFO L225 Difference]: With dead ends: 31398 [2021-05-21 20:34:09,500 INFO L226 Difference]: Without dead ends: 30633 [2021-05-21 20:34:09,500 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:10,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30633 states. [2021-05-21 20:34:10,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30633 to 13424. [2021-05-21 20:34:10,638 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) [2021-05-21 20:34:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13424 states to 13424 states and 71160 transitions. [2021-05-21 20:34:10,678 INFO L78 Accepts]: Start accepts. Automaton has 13424 states and 71160 transitions. Word has length 33 [2021-05-21 20:34:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:10,678 INFO L482 AbstractCegarLoop]: Abstraction has 13424 states and 71160 transitions. [2021-05-21 20:34:10,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 13424 states and 71160 transitions. [2021-05-21 20:34:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:10,704 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:10,704 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] [2021-05-21 20:34:10,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-05-21 20:34:10,704 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:10,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1404962137, now seen corresponding path program 312 times [2021-05-21 20:34:10,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:10,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354029620] [2021-05-21 20:34:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:10,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:10,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354029620] [2021-05-21 20:34:10,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354029620] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:10,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:10,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:10,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922080656] [2021-05-21 20:34:10,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:10,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:10,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:10,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:10,832 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) [2021-05-21 20:34:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:11,061 INFO L93 Difference]: Finished difference Result 31396 states and 157340 transitions. [2021-05-21 20:34:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:11,061 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:11,152 INFO L225 Difference]: With dead ends: 31396 [2021-05-21 20:34:11,153 INFO L226 Difference]: Without dead ends: 30417 [2021-05-21 20:34:11,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:11,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30417 states. [2021-05-21 20:34:12,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30417 to 13208. [2021-05-21 20:34:12,259 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) [2021-05-21 20:34:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 70327 transitions. [2021-05-21 20:34:12,299 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 70327 transitions. Word has length 33 [2021-05-21 20:34:12,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:12,299 INFO L482 AbstractCegarLoop]: Abstraction has 13208 states and 70327 transitions. [2021-05-21 20:34:12,300 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) [2021-05-21 20:34:12,300 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 70327 transitions. [2021-05-21 20:34:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:12,326 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:12,326 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] [2021-05-21 20:34:12,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-05-21 20:34:12,327 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:12,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:12,327 INFO L82 PathProgramCache]: Analyzing trace with hash 890792025, now seen corresponding path program 313 times [2021-05-21 20:34:12,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:12,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676667153] [2021-05-21 20:34:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:12,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:12,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676667153] [2021-05-21 20:34:12,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676667153] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:12,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:12,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:12,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250625422] [2021-05-21 20:34:12,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:12,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:12,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:12,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:12,471 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) [2021-05-21 20:34:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:12,696 INFO L93 Difference]: Finished difference Result 32665 states and 163555 transitions. [2021-05-21 20:34:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:12,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:12,802 INFO L225 Difference]: With dead ends: 32665 [2021-05-21 20:34:12,802 INFO L226 Difference]: Without dead ends: 31906 [2021-05-21 20:34:12,802 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 [2021-05-21 20:34:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31906 states. [2021-05-21 20:34:13,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31906 to 13617. [2021-05-21 20:34:14,004 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) [2021-05-21 20:34:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13617 states to 13617 states and 72292 transitions. [2021-05-21 20:34:14,044 INFO L78 Accepts]: Start accepts. Automaton has 13617 states and 72292 transitions. Word has length 33 [2021-05-21 20:34:14,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:14,045 INFO L482 AbstractCegarLoop]: Abstraction has 13617 states and 72292 transitions. [2021-05-21 20:34:14,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13617 states and 72292 transitions. [2021-05-21 20:34:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:14,071 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:14,071 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:14,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-05-21 20:34:14,071 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:14,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:14,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1016094631, now seen corresponding path program 314 times [2021-05-21 20:34:14,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:14,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852558499] [2021-05-21 20:34:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:14,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:14,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852558499] [2021-05-21 20:34:14,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852558499] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:14,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:14,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:14,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855768774] [2021-05-21 20:34:14,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:14,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:14,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:14,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:14,217 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) [2021-05-21 20:34:14,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:14,405 INFO L93 Difference]: Finished difference Result 32800 states and 164026 transitions. [2021-05-21 20:34:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:14,405 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:14,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:14,506 INFO L225 Difference]: With dead ends: 32800 [2021-05-21 20:34:14,506 INFO L226 Difference]: Without dead ends: 31718 [2021-05-21 20:34:14,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31718 states. [2021-05-21 20:34:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31718 to 13429. [2021-05-21 20:34:15,699 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) [2021-05-21 20:34:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13429 states to 13429 states and 71374 transitions. [2021-05-21 20:34:15,740 INFO L78 Accepts]: Start accepts. Automaton has 13429 states and 71374 transitions. Word has length 33 [2021-05-21 20:34:15,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:15,740 INFO L482 AbstractCegarLoop]: Abstraction has 13429 states and 71374 transitions. [2021-05-21 20:34:15,740 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) [2021-05-21 20:34:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13429 states and 71374 transitions. [2021-05-21 20:34:15,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:15,765 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:15,765 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] [2021-05-21 20:34:15,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-05-21 20:34:15,765 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:15,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:15,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1694573509, now seen corresponding path program 315 times [2021-05-21 20:34:15,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:15,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483639679] [2021-05-21 20:34:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:15,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:15,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483639679] [2021-05-21 20:34:15,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483639679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:15,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:15,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:15,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442114081] [2021-05-21 20:34:15,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:15,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:15,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:15,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:15,893 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) [2021-05-21 20:34:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:16,271 INFO L93 Difference]: Finished difference Result 32472 states and 162563 transitions. [2021-05-21 20:34:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:16,380 INFO L225 Difference]: With dead ends: 32472 [2021-05-21 20:34:16,380 INFO L226 Difference]: Without dead ends: 31713 [2021-05-21 20:34:16,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31713 states. [2021-05-21 20:34:17,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31713 to 13553. [2021-05-21 20:34:17,390 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) [2021-05-21 20:34:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13553 states to 13553 states and 71878 transitions. [2021-05-21 20:34:17,430 INFO L78 Accepts]: Start accepts. Automaton has 13553 states and 71878 transitions. Word has length 33 [2021-05-21 20:34:17,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:17,430 INFO L482 AbstractCegarLoop]: Abstraction has 13553 states and 71878 transitions. [2021-05-21 20:34:17,430 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) [2021-05-21 20:34:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 13553 states and 71878 transitions. [2021-05-21 20:34:17,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:17,456 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:17,456 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] [2021-05-21 20:34:17,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-05-21 20:34:17,456 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:17,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:17,456 INFO L82 PathProgramCache]: Analyzing trace with hash 998096985, now seen corresponding path program 316 times [2021-05-21 20:34:17,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:17,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890512884] [2021-05-21 20:34:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:17,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:17,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890512884] [2021-05-21 20:34:17,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890512884] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:17,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:17,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:17,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730399192] [2021-05-21 20:34:17,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:17,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:17,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:17,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:17,587 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) [2021-05-21 20:34:17,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:17,924 INFO L93 Difference]: Finished difference Result 32478 states and 162456 transitions. [2021-05-21 20:34:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:17,924 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 [2021-05-21 20:34:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:18,017 INFO L225 Difference]: With dead ends: 32478 [2021-05-21 20:34:18,017 INFO L226 Difference]: Without dead ends: 31589 [2021-05-21 20:34:18,018 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:18,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31589 states. [2021-05-21 20:34:19,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31589 to 13429. [2021-05-21 20:34:19,049 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) [2021-05-21 20:34:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13429 states to 13429 states and 71312 transitions. [2021-05-21 20:34:19,257 INFO L78 Accepts]: Start accepts. Automaton has 13429 states and 71312 transitions. Word has length 33 [2021-05-21 20:34:19,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:19,257 INFO L482 AbstractCegarLoop]: Abstraction has 13429 states and 71312 transitions. [2021-05-21 20:34:19,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 13429 states and 71312 transitions. [2021-05-21 20:34:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:19,283 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:19,283 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:19,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-05-21 20:34:19,283 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:19,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:19,284 INFO L82 PathProgramCache]: Analyzing trace with hash 98429017, now seen corresponding path program 317 times [2021-05-21 20:34:19,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:19,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140086089] [2021-05-21 20:34:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:19,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:19,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140086089] [2021-05-21 20:34:19,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140086089] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:19,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:19,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:19,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827041767] [2021-05-21 20:34:19,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:19,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:19,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:19,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:19,413 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) [2021-05-21 20:34:19,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:19,613 INFO L93 Difference]: Finished difference Result 32873 states and 164277 transitions. [2021-05-21 20:34:19,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:19,614 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 [2021-05-21 20:34:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:19,707 INFO L225 Difference]: With dead ends: 32873 [2021-05-21 20:34:19,707 INFO L226 Difference]: Without dead ends: 31979 [2021-05-21 20:34:19,708 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31979 states. [2021-05-21 20:34:20,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31979 to 13684. [2021-05-21 20:34:20,860 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) [2021-05-21 20:34:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13684 states to 13684 states and 72335 transitions. [2021-05-21 20:34:20,900 INFO L78 Accepts]: Start accepts. Automaton has 13684 states and 72335 transitions. Word has length 33 [2021-05-21 20:34:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:20,901 INFO L482 AbstractCegarLoop]: Abstraction has 13684 states and 72335 transitions. [2021-05-21 20:34:20,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 13684 states and 72335 transitions. [2021-05-21 20:34:20,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:20,927 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:20,927 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:20,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-05-21 20:34:20,927 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:20,927 INFO L82 PathProgramCache]: Analyzing trace with hash -382473029, now seen corresponding path program 318 times [2021-05-21 20:34:20,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:20,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154167788] [2021-05-21 20:34:20,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:21,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:21,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154167788] [2021-05-21 20:34:21,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154167788] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:21,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:21,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:21,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310094545] [2021-05-21 20:34:21,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:21,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:21,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:21,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:21,067 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) [2021-05-21 20:34:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:21,287 INFO L93 Difference]: Finished difference Result 32744 states and 163508 transitions. [2021-05-21 20:34:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:21,287 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:21,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:21,381 INFO L225 Difference]: With dead ends: 32744 [2021-05-21 20:34:21,381 INFO L226 Difference]: Without dead ends: 31598 [2021-05-21 20:34:21,381 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 [2021-05-21 20:34:22,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31598 states. [2021-05-21 20:34:22,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31598 to 13303. [2021-05-21 20:34:22,521 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) [2021-05-21 20:34:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13303 states to 13303 states and 70740 transitions. [2021-05-21 20:34:22,561 INFO L78 Accepts]: Start accepts. Automaton has 13303 states and 70740 transitions. Word has length 33 [2021-05-21 20:34:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:22,561 INFO L482 AbstractCegarLoop]: Abstraction has 13303 states and 70740 transitions. [2021-05-21 20:34:22,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 13303 states and 70740 transitions. [2021-05-21 20:34:22,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:22,587 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:22,587 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:22,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-05-21 20:34:22,587 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:22,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:22,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1154389061, now seen corresponding path program 319 times [2021-05-21 20:34:22,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:22,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034727810] [2021-05-21 20:34:22,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:22,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:22,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034727810] [2021-05-21 20:34:22,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034727810] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:22,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:22,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:22,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147146557] [2021-05-21 20:34:22,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:22,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:22,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:22,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:22,730 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) [2021-05-21 20:34:22,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:22,958 INFO L93 Difference]: Finished difference Result 32566 states and 163084 transitions. [2021-05-21 20:34:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:22,958 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:22,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:23,050 INFO L225 Difference]: With dead ends: 32566 [2021-05-21 20:34:23,050 INFO L226 Difference]: Without dead ends: 31807 [2021-05-21 20:34:23,050 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 [2021-05-21 20:34:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31807 states. [2021-05-21 20:34:24,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31807 to 13585. [2021-05-21 20:34:24,249 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) [2021-05-21 20:34:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13585 states to 13585 states and 72085 transitions. [2021-05-21 20:34:24,291 INFO L78 Accepts]: Start accepts. Automaton has 13585 states and 72085 transitions. Word has length 33 [2021-05-21 20:34:24,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:24,291 INFO L482 AbstractCegarLoop]: Abstraction has 13585 states and 72085 transitions. [2021-05-21 20:34:24,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:24,291 INFO L276 IsEmpty]: Start isEmpty. Operand 13585 states and 72085 transitions. [2021-05-21 20:34:24,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:24,317 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:24,317 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:24,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-05-21 20:34:24,318 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:24,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:24,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1233691579, now seen corresponding path program 320 times [2021-05-21 20:34:24,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:24,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834493096] [2021-05-21 20:34:24,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:24,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:24,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834493096] [2021-05-21 20:34:24,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834493096] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:24,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:24,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:24,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554350474] [2021-05-21 20:34:24,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:24,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:24,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:24,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:24,460 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) [2021-05-21 20:34:24,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:24,671 INFO L93 Difference]: Finished difference Result 32701 states and 163555 transitions. [2021-05-21 20:34:24,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:24,671 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 [2021-05-21 20:34:24,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:24,765 INFO L225 Difference]: With dead ends: 32701 [2021-05-21 20:34:24,765 INFO L226 Difference]: Without dead ends: 31619 [2021-05-21 20:34:24,765 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 147.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:25,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31619 states. [2021-05-21 20:34:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31619 to 13397. [2021-05-21 20:34:25,917 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) [2021-05-21 20:34:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 71167 transitions. [2021-05-21 20:34:25,960 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 71167 transitions. Word has length 33 [2021-05-21 20:34:25,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:25,960 INFO L482 AbstractCegarLoop]: Abstraction has 13397 states and 71167 transitions. [2021-05-21 20:34:25,960 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) [2021-05-21 20:34:25,960 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 71167 transitions. [2021-05-21 20:34:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:25,987 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:25,987 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:25,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-05-21 20:34:25,987 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:25,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:25,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1218237371, now seen corresponding path program 321 times [2021-05-21 20:34:25,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:25,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869767162] [2021-05-21 20:34:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:26,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:26,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869767162] [2021-05-21 20:34:26,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869767162] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:26,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:26,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:26,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831996621] [2021-05-21 20:34:26,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:26,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:26,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:26,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:26,120 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) [2021-05-21 20:34:26,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:26,546 INFO L93 Difference]: Finished difference Result 32371 states and 162087 transitions. [2021-05-21 20:34:26,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:26,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:26,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:26,648 INFO L225 Difference]: With dead ends: 32371 [2021-05-21 20:34:26,648 INFO L226 Difference]: Without dead ends: 31612 [2021-05-21 20:34:26,648 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31612 states. [2021-05-21 20:34:27,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31612 to 13521. [2021-05-21 20:34:27,704 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) [2021-05-21 20:34:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 71671 transitions. [2021-05-21 20:34:27,747 INFO L78 Accepts]: Start accepts. Automaton has 13521 states and 71671 transitions. Word has length 33 [2021-05-21 20:34:27,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:27,747 INFO L482 AbstractCegarLoop]: Abstraction has 13521 states and 71671 transitions. [2021-05-21 20:34:27,747 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) [2021-05-21 20:34:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 13521 states and 71671 transitions. [2021-05-21 20:34:27,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:27,774 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:27,774 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] [2021-05-21 20:34:27,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-05-21 20:34:27,774 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:27,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:27,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1938616409, now seen corresponding path program 322 times [2021-05-21 20:34:27,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:27,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019309378] [2021-05-21 20:34:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:28,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:28,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019309378] [2021-05-21 20:34:28,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019309378] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:28,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:28,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:28,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372812420] [2021-05-21 20:34:28,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:28,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:28,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:28,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:28,005 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) [2021-05-21 20:34:28,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:28,222 INFO L93 Difference]: Finished difference Result 32375 states and 161975 transitions. [2021-05-21 20:34:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:28,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:28,316 INFO L225 Difference]: With dead ends: 32375 [2021-05-21 20:34:28,316 INFO L226 Difference]: Without dead ends: 31488 [2021-05-21 20:34:28,316 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 254.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31488 states. [2021-05-21 20:34:29,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31488 to 13397. [2021-05-21 20:34:29,460 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) [2021-05-21 20:34:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 71105 transitions. [2021-05-21 20:34:29,499 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 71105 transitions. Word has length 33 [2021-05-21 20:34:29,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:29,499 INFO L482 AbstractCegarLoop]: Abstraction has 13397 states and 71105 transitions. [2021-05-21 20:34:29,499 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) [2021-05-21 20:34:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 71105 transitions. [2021-05-21 20:34:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:29,524 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:29,524 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] [2021-05-21 20:34:29,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-05-21 20:34:29,524 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:29,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:29,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1293678503, now seen corresponding path program 323 times [2021-05-21 20:34:29,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:29,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606801858] [2021-05-21 20:34:29,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:29,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:29,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606801858] [2021-05-21 20:34:29,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606801858] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:29,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:29,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:29,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702949917] [2021-05-21 20:34:29,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:29,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:29,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:29,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:29,653 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) [2021-05-21 20:34:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:29,853 INFO L93 Difference]: Finished difference Result 32707 states and 163542 transitions. [2021-05-21 20:34:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:29,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:29,947 INFO L225 Difference]: With dead ends: 32707 [2021-05-21 20:34:29,947 INFO L226 Difference]: Without dead ends: 31813 [2021-05-21 20:34:29,947 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 134.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31813 states. [2021-05-21 20:34:31,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31813 to 13587. [2021-05-21 20:34:31,074 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) [2021-05-21 20:34:31,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13587 states to 13587 states and 71870 transitions. [2021-05-21 20:34:31,115 INFO L78 Accepts]: Start accepts. Automaton has 13587 states and 71870 transitions. Word has length 33 [2021-05-21 20:34:31,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:31,115 INFO L482 AbstractCegarLoop]: Abstraction has 13587 states and 71870 transitions. [2021-05-21 20:34:31,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:31,115 INFO L276 IsEmpty]: Start isEmpty. Operand 13587 states and 71870 transitions. [2021-05-21 20:34:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:31,141 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:31,141 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:31,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-05-21 20:34:31,141 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:31,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:31,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1827329083, now seen corresponding path program 324 times [2021-05-21 20:34:31,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:31,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467012541] [2021-05-21 20:34:31,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:31,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:31,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467012541] [2021-05-21 20:34:31,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467012541] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:31,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:31,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:31,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755580071] [2021-05-21 20:34:31,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:31,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:31,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:31,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:31,269 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) [2021-05-21 20:34:31,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:31,486 INFO L93 Difference]: Finished difference Result 32576 states and 162769 transitions. [2021-05-21 20:34:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:31,486 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:31,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:31,577 INFO L225 Difference]: With dead ends: 32576 [2021-05-21 20:34:31,578 INFO L226 Difference]: Without dead ends: 31529 [2021-05-21 20:34:31,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31529 states. [2021-05-21 20:34:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31529 to 13303. [2021-05-21 20:34:32,754 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) [2021-05-21 20:34:32,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13303 states to 13303 states and 70693 transitions. [2021-05-21 20:34:32,793 INFO L78 Accepts]: Start accepts. Automaton has 13303 states and 70693 transitions. Word has length 33 [2021-05-21 20:34:32,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:32,793 INFO L482 AbstractCegarLoop]: Abstraction has 13303 states and 70693 transitions. [2021-05-21 20:34:32,794 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) [2021-05-21 20:34:32,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13303 states and 70693 transitions. [2021-05-21 20:34:32,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:32,819 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:32,819 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:32,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-05-21 20:34:32,819 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:32,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:32,820 INFO L82 PathProgramCache]: Analyzing trace with hash 454616861, now seen corresponding path program 325 times [2021-05-21 20:34:32,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:32,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909875070] [2021-05-21 20:34:32,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:32,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:32,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909875070] [2021-05-21 20:34:32,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909875070] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:32,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:32,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:32,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393046095] [2021-05-21 20:34:32,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:32,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:32,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:32,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:32,950 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) [2021-05-21 20:34:33,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:33,182 INFO L93 Difference]: Finished difference Result 32084 states and 160745 transitions. [2021-05-21 20:34:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:33,182 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:33,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:33,276 INFO L225 Difference]: With dead ends: 32084 [2021-05-21 20:34:33,276 INFO L226 Difference]: Without dead ends: 31325 [2021-05-21 20:34:33,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 154.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31325 states. [2021-05-21 20:34:34,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31325 to 13489. [2021-05-21 20:34:34,481 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) [2021-05-21 20:34:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13489 states to 13489 states and 71542 transitions. [2021-05-21 20:34:34,522 INFO L78 Accepts]: Start accepts. Automaton has 13489 states and 71542 transitions. Word has length 33 [2021-05-21 20:34:34,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:34,522 INFO L482 AbstractCegarLoop]: Abstraction has 13489 states and 71542 transitions. [2021-05-21 20:34:34,522 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) [2021-05-21 20:34:34,522 INFO L276 IsEmpty]: Start isEmpty. Operand 13489 states and 71542 transitions. [2021-05-21 20:34:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:34,549 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:34,549 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] [2021-05-21 20:34:34,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-05-21 20:34:34,549 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:34,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1147679941, now seen corresponding path program 326 times [2021-05-21 20:34:34,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:34,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366809179] [2021-05-21 20:34:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:34,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:34,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366809179] [2021-05-21 20:34:34,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366809179] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:34,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:34,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:34,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984790458] [2021-05-21 20:34:34,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:34,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:34,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:34,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:34,678 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) [2021-05-21 20:34:34,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:34,905 INFO L93 Difference]: Finished difference Result 32090 states and 160638 transitions. [2021-05-21 20:34:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:34,905 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:34,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:35,242 INFO L225 Difference]: With dead ends: 32090 [2021-05-21 20:34:35,242 INFO L226 Difference]: Without dead ends: 31201 [2021-05-21 20:34:35,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:36,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31201 states. [2021-05-21 20:34:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31201 to 13365. [2021-05-21 20:34:36,318 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) [2021-05-21 20:34:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13365 states to 13365 states and 70976 transitions. [2021-05-21 20:34:36,359 INFO L78 Accepts]: Start accepts. Automaton has 13365 states and 70976 transitions. Word has length 33 [2021-05-21 20:34:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:36,359 INFO L482 AbstractCegarLoop]: Abstraction has 13365 states and 70976 transitions. [2021-05-21 20:34:36,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 13365 states and 70976 transitions. [2021-05-21 20:34:36,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:36,385 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:36,385 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:36,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-05-21 20:34:36,385 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:36,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1912663931, now seen corresponding path program 327 times [2021-05-21 20:34:36,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:36,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757186254] [2021-05-21 20:34:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:36,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:36,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757186254] [2021-05-21 20:34:36,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757186254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:36,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:36,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:36,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748789616] [2021-05-21 20:34:36,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:36,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:36,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:36,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:36,514 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) [2021-05-21 20:34:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:36,956 INFO L93 Difference]: Finished difference Result 32082 states and 160678 transitions. [2021-05-21 20:34:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:36,956 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:37,060 INFO L225 Difference]: With dead ends: 32082 [2021-05-21 20:34:37,060 INFO L226 Difference]: Without dead ends: 31323 [2021-05-21 20:34:37,060 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31323 states. [2021-05-21 20:34:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31323 to 13489. [2021-05-21 20:34:38,103 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) [2021-05-21 20:34:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13489 states to 13489 states and 71480 transitions. [2021-05-21 20:34:38,146 INFO L78 Accepts]: Start accepts. Automaton has 13489 states and 71480 transitions. Word has length 33 [2021-05-21 20:34:38,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:38,146 INFO L482 AbstractCegarLoop]: Abstraction has 13489 states and 71480 transitions. [2021-05-21 20:34:38,146 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) [2021-05-21 20:34:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 13489 states and 71480 transitions. [2021-05-21 20:34:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:38,173 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:38,173 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] [2021-05-21 20:34:38,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-05-21 20:34:38,173 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:38,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:38,173 INFO L82 PathProgramCache]: Analyzing trace with hash -106564677, now seen corresponding path program 328 times [2021-05-21 20:34:38,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:38,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904924155] [2021-05-21 20:34:38,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:38,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:38,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904924155] [2021-05-21 20:34:38,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904924155] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:38,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:38,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:38,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889266759] [2021-05-21 20:34:38,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:38,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:38,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:38,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:38,422 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) [2021-05-21 20:34:38,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:38,661 INFO L93 Difference]: Finished difference Result 32086 states and 160566 transitions. [2021-05-21 20:34:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:38,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:38,765 INFO L225 Difference]: With dead ends: 32086 [2021-05-21 20:34:38,765 INFO L226 Difference]: Without dead ends: 31199 [2021-05-21 20:34:38,765 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 [2021-05-21 20:34:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31199 states. [2021-05-21 20:34:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31199 to 13365. [2021-05-21 20:34:39,934 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) [2021-05-21 20:34:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13365 states to 13365 states and 70914 transitions. [2021-05-21 20:34:39,974 INFO L78 Accepts]: Start accepts. Automaton has 13365 states and 70914 transitions. Word has length 33 [2021-05-21 20:34:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:39,974 INFO L482 AbstractCegarLoop]: Abstraction has 13365 states and 70914 transitions. [2021-05-21 20:34:39,974 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) [2021-05-21 20:34:39,974 INFO L276 IsEmpty]: Start isEmpty. Operand 13365 states and 70914 transitions. [2021-05-21 20:34:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:39,998 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:39,998 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:39,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-05-21 20:34:39,998 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:39,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:39,998 INFO L82 PathProgramCache]: Analyzing trace with hash -353159079, now seen corresponding path program 329 times [2021-05-21 20:34:39,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:39,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371383043] [2021-05-21 20:34:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:40,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:40,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371383043] [2021-05-21 20:34:40,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371383043] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:40,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:40,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:40,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620595238] [2021-05-21 20:34:40,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:40,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:40,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:40,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:40,132 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) [2021-05-21 20:34:40,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:40,345 INFO L93 Difference]: Finished difference Result 32096 states and 160657 transitions. [2021-05-21 20:34:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:40,345 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:40,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:40,439 INFO L225 Difference]: With dead ends: 32096 [2021-05-21 20:34:40,439 INFO L226 Difference]: Without dead ends: 31331 [2021-05-21 20:34:40,440 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 157.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31331 states. [2021-05-21 20:34:41,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31331 to 13491. [2021-05-21 20:34:41,554 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) [2021-05-21 20:34:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13491 states to 13491 states and 71423 transitions. [2021-05-21 20:34:41,593 INFO L78 Accepts]: Start accepts. Automaton has 13491 states and 71423 transitions. Word has length 33 [2021-05-21 20:34:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:41,593 INFO L482 AbstractCegarLoop]: Abstraction has 13491 states and 71423 transitions. [2021-05-21 20:34:41,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 13491 states and 71423 transitions. [2021-05-21 20:34:41,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:41,619 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:41,619 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] [2021-05-21 20:34:41,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-05-21 20:34:41,619 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:41,620 INFO L82 PathProgramCache]: Analyzing trace with hash -834061125, now seen corresponding path program 330 times [2021-05-21 20:34:41,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:41,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319655577] [2021-05-21 20:34:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:41,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:41,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319655577] [2021-05-21 20:34:41,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319655577] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:41,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:41,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:41,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140991479] [2021-05-21 20:34:41,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:41,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:41,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:41,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:41,748 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) [2021-05-21 20:34:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:41,977 INFO L93 Difference]: Finished difference Result 32094 states and 160526 transitions. [2021-05-21 20:34:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:41,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:42,069 INFO L225 Difference]: With dead ends: 32094 [2021-05-21 20:34:42,069 INFO L226 Difference]: Without dead ends: 31143 [2021-05-21 20:34:42,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:42,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31143 states. [2021-05-21 20:34:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31143 to 13303. [2021-05-21 20:34:43,213 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) [2021-05-21 20:34:43,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13303 states to 13303 states and 70662 transitions. [2021-05-21 20:34:43,254 INFO L78 Accepts]: Start accepts. Automaton has 13303 states and 70662 transitions. Word has length 33 [2021-05-21 20:34:43,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:43,254 INFO L482 AbstractCegarLoop]: Abstraction has 13303 states and 70662 transitions. [2021-05-21 20:34:43,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:43,254 INFO L276 IsEmpty]: Start isEmpty. Operand 13303 states and 70662 transitions. [2021-05-21 20:34:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:43,280 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:43,280 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:43,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-05-21 20:34:43,281 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:43,281 INFO L82 PathProgramCache]: Analyzing trace with hash 635125849, now seen corresponding path program 331 times [2021-05-21 20:34:43,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:43,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925402744] [2021-05-21 20:34:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:43,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:43,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925402744] [2021-05-21 20:34:43,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925402744] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:43,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:43,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:43,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484294951] [2021-05-21 20:34:43,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:43,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:43,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:43,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:43,417 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) [2021-05-21 20:34:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:43,627 INFO L93 Difference]: Finished difference Result 32914 states and 164434 transitions. [2021-05-21 20:34:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:43,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:43,726 INFO L225 Difference]: With dead ends: 32914 [2021-05-21 20:34:43,726 INFO L226 Difference]: Without dead ends: 32020 [2021-05-21 20:34:43,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 139.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32020 states. [2021-05-21 20:34:44,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32020 to 13717. [2021-05-21 20:34:44,907 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) [2021-05-21 20:34:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13717 states to 13717 states and 72466 transitions. [2021-05-21 20:34:44,949 INFO L78 Accepts]: Start accepts. Automaton has 13717 states and 72466 transitions. Word has length 33 [2021-05-21 20:34:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:44,949 INFO L482 AbstractCegarLoop]: Abstraction has 13717 states and 72466 transitions. [2021-05-21 20:34:44,949 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) [2021-05-21 20:34:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 13717 states and 72466 transitions. [2021-05-21 20:34:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:44,976 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:44,976 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] [2021-05-21 20:34:44,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-05-21 20:34:44,976 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:44,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:44,977 INFO L82 PathProgramCache]: Analyzing trace with hash 154223803, now seen corresponding path program 332 times [2021-05-21 20:34:44,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:44,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104411041] [2021-05-21 20:34:44,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:45,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:45,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104411041] [2021-05-21 20:34:45,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104411041] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:45,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:45,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:45,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606425876] [2021-05-21 20:34:45,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:45,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:45,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:45,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:45,122 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) [2021-05-21 20:34:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:45,370 INFO L93 Difference]: Finished difference Result 32785 states and 163665 transitions. [2021-05-21 20:34:45,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:45,370 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:45,646 INFO L225 Difference]: With dead ends: 32785 [2021-05-21 20:34:45,647 INFO L226 Difference]: Without dead ends: 31765 [2021-05-21 20:34:45,647 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 [2021-05-21 20:34:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31765 states. [2021-05-21 20:34:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31765 to 13462. [2021-05-21 20:34:46,658 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) [2021-05-21 20:34:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13462 states to 13462 states and 71316 transitions. [2021-05-21 20:34:46,701 INFO L78 Accepts]: Start accepts. Automaton has 13462 states and 71316 transitions. Word has length 33 [2021-05-21 20:34:46,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:46,701 INFO L482 AbstractCegarLoop]: Abstraction has 13462 states and 71316 transitions. [2021-05-21 20:34:46,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:46,701 INFO L276 IsEmpty]: Start isEmpty. Operand 13462 states and 71316 transitions. [2021-05-21 20:34:46,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:46,730 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:46,730 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:46,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-05-21 20:34:46,730 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:46,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:46,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1950239685, now seen corresponding path program 333 times [2021-05-21 20:34:46,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:46,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119727631] [2021-05-21 20:34:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:46,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:46,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119727631] [2021-05-21 20:34:46,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119727631] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:46,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:46,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:46,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717878224] [2021-05-21 20:34:46,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:46,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:46,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:46,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:46,861 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) [2021-05-21 20:34:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:47,280 INFO L93 Difference]: Finished difference Result 32847 states and 164043 transitions. [2021-05-21 20:34:47,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:47,280 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:47,380 INFO L225 Difference]: With dead ends: 32847 [2021-05-21 20:34:47,381 INFO L226 Difference]: Without dead ends: 31953 [2021-05-21 20:34:47,381 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:48,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31953 states. [2021-05-21 20:34:48,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31953 to 13652. [2021-05-21 20:34:48,421 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) [2021-05-21 20:34:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13652 states to 13652 states and 72081 transitions. [2021-05-21 20:34:48,463 INFO L78 Accepts]: Start accepts. Automaton has 13652 states and 72081 transitions. Word has length 33 [2021-05-21 20:34:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:48,464 INFO L482 AbstractCegarLoop]: Abstraction has 13652 states and 72081 transitions. [2021-05-21 20:34:48,464 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) [2021-05-21 20:34:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 13652 states and 72081 transitions. [2021-05-21 20:34:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:48,608 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:48,608 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:48,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-05-21 20:34:48,608 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:48,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:48,608 INFO L82 PathProgramCache]: Analyzing trace with hash -857269189, now seen corresponding path program 334 times [2021-05-21 20:34:48,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:48,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337829592] [2021-05-21 20:34:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:48,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:48,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337829592] [2021-05-21 20:34:48,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337829592] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:48,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:48,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:48,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910796245] [2021-05-21 20:34:48,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:48,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:48,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:48,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:48,738 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) [2021-05-21 20:34:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:48,959 INFO L93 Difference]: Finished difference Result 32716 states and 163270 transitions. [2021-05-21 20:34:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:48,959 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 [2021-05-21 20:34:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:49,051 INFO L225 Difference]: With dead ends: 32716 [2021-05-21 20:34:49,051 INFO L226 Difference]: Without dead ends: 31763 [2021-05-21 20:34:49,051 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 [2021-05-21 20:34:49,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31763 states. [2021-05-21 20:34:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31763 to 13462. [2021-05-21 20:34:50,174 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) [2021-05-21 20:34:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13462 states to 13462 states and 71221 transitions. [2021-05-21 20:34:50,214 INFO L78 Accepts]: Start accepts. Automaton has 13462 states and 71221 transitions. Word has length 33 [2021-05-21 20:34:50,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:50,214 INFO L482 AbstractCegarLoop]: Abstraction has 13462 states and 71221 transitions. [2021-05-21 20:34:50,214 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) [2021-05-21 20:34:50,214 INFO L276 IsEmpty]: Start isEmpty. Operand 13462 states and 71221 transitions. [2021-05-21 20:34:50,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:50,239 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:50,239 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] [2021-05-21 20:34:50,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-05-21 20:34:50,239 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:50,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1555341341, now seen corresponding path program 335 times [2021-05-21 20:34:50,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:50,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397124743] [2021-05-21 20:34:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:50,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:50,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397124743] [2021-05-21 20:34:50,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397124743] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:50,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:50,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:50,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452041948] [2021-05-21 20:34:50,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:50,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:50,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:50,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:50,368 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) [2021-05-21 20:34:50,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:50,571 INFO L93 Difference]: Finished difference Result 32525 states and 162472 transitions. [2021-05-21 20:34:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:50,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:50,666 INFO L225 Difference]: With dead ends: 32525 [2021-05-21 20:34:50,666 INFO L226 Difference]: Without dead ends: 31760 [2021-05-21 20:34:50,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31760 states. [2021-05-21 20:34:51,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31760 to 13588. [2021-05-21 20:34:51,788 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) [2021-05-21 20:34:51,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13588 states to 13588 states and 71730 transitions. [2021-05-21 20:34:51,828 INFO L78 Accepts]: Start accepts. Automaton has 13588 states and 71730 transitions. Word has length 33 [2021-05-21 20:34:51,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:51,828 INFO L482 AbstractCegarLoop]: Abstraction has 13588 states and 71730 transitions. [2021-05-21 20:34:51,829 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) [2021-05-21 20:34:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13588 states and 71730 transitions. [2021-05-21 20:34:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:51,854 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:51,854 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:51,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-05-21 20:34:51,854 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:51,855 INFO L82 PathProgramCache]: Analyzing trace with hash -467720197, now seen corresponding path program 336 times [2021-05-21 20:34:51,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:51,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165789487] [2021-05-21 20:34:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:51,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:51,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165789487] [2021-05-21 20:34:51,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165789487] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:51,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:51,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:51,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071970192] [2021-05-21 20:34:51,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:51,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:51,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:51,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:51,994 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) [2021-05-21 20:34:52,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:52,212 INFO L93 Difference]: Finished difference Result 32523 states and 162341 transitions. [2021-05-21 20:34:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:52,213 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:52,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:52,305 INFO L225 Difference]: With dead ends: 32523 [2021-05-21 20:34:52,305 INFO L226 Difference]: Without dead ends: 31380 [2021-05-21 20:34:52,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:53,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31380 states. [2021-05-21 20:34:53,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31380 to 13208. [2021-05-21 20:34:53,438 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) [2021-05-21 20:34:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 70280 transitions. [2021-05-21 20:34:53,481 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 70280 transitions. Word has length 33 [2021-05-21 20:34:53,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:53,481 INFO L482 AbstractCegarLoop]: Abstraction has 13208 states and 70280 transitions. [2021-05-21 20:34:53,481 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) [2021-05-21 20:34:53,481 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 70280 transitions. [2021-05-21 20:34:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:53,508 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:53,508 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:34:53,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-05-21 20:34:53,508 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:53,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:53,508 INFO L82 PathProgramCache]: Analyzing trace with hash 237463863, now seen corresponding path program 337 times [2021-05-21 20:34:53,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:53,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659604104] [2021-05-21 20:34:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:53,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:53,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659604104] [2021-05-21 20:34:53,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659604104] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:53,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:53,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:53,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160129760] [2021-05-21 20:34:53,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:53,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:53,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:53,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:53,663 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) [2021-05-21 20:34:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:53,888 INFO L93 Difference]: Finished difference Result 32584 states and 163211 transitions. [2021-05-21 20:34:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:53,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:53,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:53,986 INFO L225 Difference]: With dead ends: 32584 [2021-05-21 20:34:53,987 INFO L226 Difference]: Without dead ends: 31833 [2021-05-21 20:34:53,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 178.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:54,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31833 states. [2021-05-21 20:34:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31833 to 13594. [2021-05-21 20:34:55,143 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) [2021-05-21 20:34:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13594 states to 13594 states and 72171 transitions. [2021-05-21 20:34:55,184 INFO L78 Accepts]: Start accepts. Automaton has 13594 states and 72171 transitions. Word has length 33 [2021-05-21 20:34:55,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:55,185 INFO L482 AbstractCegarLoop]: Abstraction has 13594 states and 72171 transitions. [2021-05-21 20:34:55,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:34:55,185 INFO L276 IsEmpty]: Start isEmpty. Operand 13594 states and 72171 transitions. [2021-05-21 20:34:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:55,212 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:55,212 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] [2021-05-21 20:34:55,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-05-21 20:34:55,212 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:55,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:55,213 INFO L82 PathProgramCache]: Analyzing trace with hash -380059495, now seen corresponding path program 338 times [2021-05-21 20:34:55,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:55,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458164746] [2021-05-21 20:34:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:55,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:55,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458164746] [2021-05-21 20:34:55,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458164746] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:55,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:55,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:55,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414399187] [2021-05-21 20:34:55,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:55,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:55,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:55,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:55,369 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) [2021-05-21 20:34:55,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:55,732 INFO L93 Difference]: Finished difference Result 32727 states and 163714 transitions. [2021-05-21 20:34:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:55,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:55,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:55,840 INFO L225 Difference]: With dead ends: 32727 [2021-05-21 20:34:55,840 INFO L226 Difference]: Without dead ends: 31649 [2021-05-21 20:34:55,840 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 161.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31649 states. [2021-05-21 20:34:56,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31649 to 13410. [2021-05-21 20:34:56,857 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) [2021-05-21 20:34:56,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13410 states to 13410 states and 71267 transitions. [2021-05-21 20:34:56,899 INFO L78 Accepts]: Start accepts. Automaton has 13410 states and 71267 transitions. Word has length 33 [2021-05-21 20:34:56,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:56,899 INFO L482 AbstractCegarLoop]: Abstraction has 13410 states and 71267 transitions. [2021-05-21 20:34:56,899 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) [2021-05-21 20:34:56,899 INFO L276 IsEmpty]: Start isEmpty. Operand 13410 states and 71267 transitions. [2021-05-21 20:34:56,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:56,926 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:56,926 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] [2021-05-21 20:34:56,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-05-21 20:34:56,926 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:56,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1947065625, now seen corresponding path program 339 times [2021-05-21 20:34:56,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:56,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337127413] [2021-05-21 20:34:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:57,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:57,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337127413] [2021-05-21 20:34:57,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337127413] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:57,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:57,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:57,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657896699] [2021-05-21 20:34:57,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:57,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:57,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:57,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:57,077 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) [2021-05-21 20:34:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:57,422 INFO L93 Difference]: Finished difference Result 32391 states and 162221 transitions. [2021-05-21 20:34:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:57,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:57,517 INFO L225 Difference]: With dead ends: 32391 [2021-05-21 20:34:57,517 INFO L226 Difference]: Without dead ends: 31640 [2021-05-21 20:34:57,517 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 175.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:58,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31640 states. [2021-05-21 20:34:58,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31640 to 13530. [2021-05-21 20:34:58,543 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) [2021-05-21 20:34:58,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13530 states to 13530 states and 71759 transitions. [2021-05-21 20:34:58,749 INFO L78 Accepts]: Start accepts. Automaton has 13530 states and 71759 transitions. Word has length 33 [2021-05-21 20:34:58,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:34:58,749 INFO L482 AbstractCegarLoop]: Abstraction has 13530 states and 71759 transitions. [2021-05-21 20:34:58,749 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) [2021-05-21 20:34:58,749 INFO L276 IsEmpty]: Start isEmpty. Operand 13530 states and 71759 transitions. [2021-05-21 20:34:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:34:58,777 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:34:58,777 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] [2021-05-21 20:34:58,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-05-21 20:34:58,778 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:34:58,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:34:58,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1391552487, now seen corresponding path program 340 times [2021-05-21 20:34:58,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:34:58,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720488302] [2021-05-21 20:34:58,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:34:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:34:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:34:58,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:34:58,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720488302] [2021-05-21 20:34:58,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720488302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:34:58,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:34:58,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:34:58,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419526244] [2021-05-21 20:34:58,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:34:58,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:34:58,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:34:58,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:34:58,931 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) [2021-05-21 20:34:59,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:34:59,152 INFO L93 Difference]: Finished difference Result 32405 states and 162146 transitions. [2021-05-21 20:34:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:34:59,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:34:59,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:34:59,242 INFO L225 Difference]: With dead ends: 32405 [2021-05-21 20:34:59,242 INFO L226 Difference]: Without dead ends: 31520 [2021-05-21 20:34:59,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 175.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:34:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31520 states. [2021-05-21 20:35:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31520 to 13410. [2021-05-21 20:35:00,398 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) [2021-05-21 20:35:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13410 states to 13410 states and 71207 transitions. [2021-05-21 20:35:00,438 INFO L78 Accepts]: Start accepts. Automaton has 13410 states and 71207 transitions. Word has length 33 [2021-05-21 20:35:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:00,438 INFO L482 AbstractCegarLoop]: Abstraction has 13410 states and 71207 transitions. [2021-05-21 20:35:00,438 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) [2021-05-21 20:35:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 13410 states and 71207 transitions. [2021-05-21 20:35:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:00,464 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:00,464 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:00,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-05-21 20:35:00,464 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:00,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:00,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1423003909, now seen corresponding path program 341 times [2021-05-21 20:35:00,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:00,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96866441] [2021-05-21 20:35:00,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:00,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:00,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96866441] [2021-05-21 20:35:00,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96866441] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:00,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:00,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:00,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32275177] [2021-05-21 20:35:00,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:00,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:00,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:00,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:00,602 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) [2021-05-21 20:35:00,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:00,793 INFO L93 Difference]: Finished difference Result 32812 states and 164009 transitions. [2021-05-21 20:35:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:00,794 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 [2021-05-21 20:35:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:00,887 INFO L225 Difference]: With dead ends: 32812 [2021-05-21 20:35:00,887 INFO L226 Difference]: Without dead ends: 31918 [2021-05-21 20:35:00,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 144.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31918 states. [2021-05-21 20:35:02,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31918 to 13665. [2021-05-21 20:35:02,038 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) [2021-05-21 20:35:02,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 72230 transitions. [2021-05-21 20:35:02,081 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 72230 transitions. Word has length 33 [2021-05-21 20:35:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:02,081 INFO L482 AbstractCegarLoop]: Abstraction has 13665 states and 72230 transitions. [2021-05-21 20:35:02,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 72230 transitions. [2021-05-21 20:35:02,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:02,110 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:02,110 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] [2021-05-21 20:35:02,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-05-21 20:35:02,110 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:02,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:02,110 INFO L82 PathProgramCache]: Analyzing trace with hash 848901849, now seen corresponding path program 342 times [2021-05-21 20:35:02,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:02,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658451368] [2021-05-21 20:35:02,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:02,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:02,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658451368] [2021-05-21 20:35:02,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658451368] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:02,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:02,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:02,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278889563] [2021-05-21 20:35:02,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:02,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:02,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:02,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:02,267 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) [2021-05-21 20:35:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:02,519 INFO L93 Difference]: Finished difference Result 32683 states and 163240 transitions. [2021-05-21 20:35:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:02,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:02,615 INFO L225 Difference]: With dead ends: 32683 [2021-05-21 20:35:02,615 INFO L226 Difference]: Without dead ends: 31539 [2021-05-21 20:35:02,615 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 [2021-05-21 20:35:03,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31539 states. [2021-05-21 20:35:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31539 to 13286. [2021-05-21 20:35:03,785 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) [2021-05-21 20:35:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13286 states to 13286 states and 70641 transitions. [2021-05-21 20:35:03,829 INFO L78 Accepts]: Start accepts. Automaton has 13286 states and 70641 transitions. Word has length 33 [2021-05-21 20:35:03,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:03,829 INFO L482 AbstractCegarLoop]: Abstraction has 13286 states and 70641 transitions. [2021-05-21 20:35:03,829 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) [2021-05-21 20:35:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13286 states and 70641 transitions. [2021-05-21 20:35:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:03,856 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:03,856 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:03,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-05-21 20:35:03,856 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:03,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:03,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1807717223, now seen corresponding path program 343 times [2021-05-21 20:35:03,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:03,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708949513] [2021-05-21 20:35:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:04,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:04,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708949513] [2021-05-21 20:35:04,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708949513] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:04,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:04,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:04,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694255099] [2021-05-21 20:35:04,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:04,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:04,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:04,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:04,003 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) [2021-05-21 20:35:04,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:04,281 INFO L93 Difference]: Finished difference Result 32485 states and 162741 transitions. [2021-05-21 20:35:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:04,281 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 [2021-05-21 20:35:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:04,380 INFO L225 Difference]: With dead ends: 32485 [2021-05-21 20:35:04,380 INFO L226 Difference]: Without dead ends: 31734 [2021-05-21 20:35:04,380 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 [2021-05-21 20:35:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31734 states. [2021-05-21 20:35:05,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31734 to 13562. [2021-05-21 20:35:05,566 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) [2021-05-21 20:35:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13562 states to 13562 states and 71965 transitions. [2021-05-21 20:35:05,613 INFO L78 Accepts]: Start accepts. Automaton has 13562 states and 71965 transitions. Word has length 33 [2021-05-21 20:35:05,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:05,613 INFO L482 AbstractCegarLoop]: Abstraction has 13562 states and 71965 transitions. [2021-05-21 20:35:05,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:05,613 INFO L276 IsEmpty]: Start isEmpty. Operand 13562 states and 71965 transitions. [2021-05-21 20:35:05,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:05,640 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:05,640 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:05,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-05-21 20:35:05,640 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:05,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:05,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1869726715, now seen corresponding path program 344 times [2021-05-21 20:35:05,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:05,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419263223] [2021-05-21 20:35:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:05,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:05,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419263223] [2021-05-21 20:35:05,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419263223] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:05,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:05,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:05,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873968562] [2021-05-21 20:35:05,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:05,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:05,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:05,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:05,785 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) [2021-05-21 20:35:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:06,125 INFO L93 Difference]: Finished difference Result 32628 states and 163244 transitions. [2021-05-21 20:35:06,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:06,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:06,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:06,221 INFO L225 Difference]: With dead ends: 32628 [2021-05-21 20:35:06,221 INFO L226 Difference]: Without dead ends: 31550 [2021-05-21 20:35:06,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31550 states. [2021-05-21 20:35:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31550 to 13378. [2021-05-21 20:35:07,265 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) [2021-05-21 20:35:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13378 states to 13378 states and 71061 transitions. [2021-05-21 20:35:07,308 INFO L78 Accepts]: Start accepts. Automaton has 13378 states and 71061 transitions. Word has length 33 [2021-05-21 20:35:07,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:07,308 INFO L482 AbstractCegarLoop]: Abstraction has 13378 states and 71061 transitions. [2021-05-21 20:35:07,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 13378 states and 71061 transitions. [2021-05-21 20:35:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:07,334 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:07,334 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] [2021-05-21 20:35:07,334 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-05-21 20:35:07,334 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:07,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:07,334 INFO L82 PathProgramCache]: Analyzing trace with hash 564909209, now seen corresponding path program 345 times [2021-05-21 20:35:07,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:07,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805314110] [2021-05-21 20:35:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:07,469 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-05-21 20:35:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:07,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:07,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805314110] [2021-05-21 20:35:07,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805314110] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:07,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:07,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:07,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97603457] [2021-05-21 20:35:07,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:07,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:07,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:07,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:07,570 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) [2021-05-21 20:35:07,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:07,807 INFO L93 Difference]: Finished difference Result 32290 states and 161746 transitions. [2021-05-21 20:35:07,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:07,807 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 [2021-05-21 20:35:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:07,910 INFO L225 Difference]: With dead ends: 32290 [2021-05-21 20:35:07,910 INFO L226 Difference]: Without dead ends: 31539 [2021-05-21 20:35:07,910 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:08,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31539 states. [2021-05-21 20:35:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31539 to 13498. [2021-05-21 20:35:09,083 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) [2021-05-21 20:35:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13498 states to 13498 states and 71553 transitions. [2021-05-21 20:35:09,122 INFO L78 Accepts]: Start accepts. Automaton has 13498 states and 71553 transitions. Word has length 33 [2021-05-21 20:35:09,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:09,122 INFO L482 AbstractCegarLoop]: Abstraction has 13498 states and 71553 transitions. [2021-05-21 20:35:09,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:09,122 INFO L276 IsEmpty]: Start isEmpty. Operand 13498 states and 71553 transitions. [2021-05-21 20:35:09,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:09,148 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:09,149 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:09,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-05-21 20:35:09,149 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:09,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:09,149 INFO L82 PathProgramCache]: Analyzing trace with hash 818249625, now seen corresponding path program 346 times [2021-05-21 20:35:09,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:09,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378302516] [2021-05-21 20:35:09,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:09,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:09,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378302516] [2021-05-21 20:35:09,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378302516] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:09,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:09,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:09,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788832661] [2021-05-21 20:35:09,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:09,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:09,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:09,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:09,293 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) [2021-05-21 20:35:09,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:09,512 INFO L93 Difference]: Finished difference Result 32302 states and 161666 transitions. [2021-05-21 20:35:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:09,512 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 [2021-05-21 20:35:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:09,605 INFO L225 Difference]: With dead ends: 32302 [2021-05-21 20:35:09,605 INFO L226 Difference]: Without dead ends: 31419 [2021-05-21 20:35:09,605 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 158.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31419 states. [2021-05-21 20:35:10,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31419 to 13378. [2021-05-21 20:35:10,743 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) [2021-05-21 20:35:10,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13378 states to 13378 states and 71001 transitions. [2021-05-21 20:35:10,782 INFO L78 Accepts]: Start accepts. Automaton has 13378 states and 71001 transitions. Word has length 33 [2021-05-21 20:35:10,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:10,782 INFO L482 AbstractCegarLoop]: Abstraction has 13378 states and 71001 transitions. [2021-05-21 20:35:10,782 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) [2021-05-21 20:35:10,782 INFO L276 IsEmpty]: Start isEmpty. Operand 13378 states and 71001 transitions. [2021-05-21 20:35:10,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:10,808 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:10,809 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] [2021-05-21 20:35:10,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-05-21 20:35:10,809 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:10,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:10,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1489806971, now seen corresponding path program 347 times [2021-05-21 20:35:10,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:10,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198049120] [2021-05-21 20:35:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:10,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:10,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198049120] [2021-05-21 20:35:10,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198049120] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:10,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:10,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:10,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778254452] [2021-05-21 20:35:10,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:10,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:10,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:10,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:10,944 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) [2021-05-21 20:35:11,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:11,145 INFO L93 Difference]: Finished difference Result 32646 states and 163275 transitions. [2021-05-21 20:35:11,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:11,145 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:11,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:11,242 INFO L225 Difference]: With dead ends: 32646 [2021-05-21 20:35:11,242 INFO L226 Difference]: Without dead ends: 31752 [2021-05-21 20:35:11,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:12,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31752 states. [2021-05-21 20:35:12,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31752 to 13568. [2021-05-21 20:35:12,402 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) [2021-05-21 20:35:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13568 states to 13568 states and 71766 transitions. [2021-05-21 20:35:12,444 INFO L78 Accepts]: Start accepts. Automaton has 13568 states and 71766 transitions. Word has length 33 [2021-05-21 20:35:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:12,444 INFO L482 AbstractCegarLoop]: Abstraction has 13568 states and 71766 transitions. [2021-05-21 20:35:12,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand 13568 states and 71766 transitions. [2021-05-21 20:35:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:12,471 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:12,471 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:12,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-05-21 20:35:12,471 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:12,471 INFO L82 PathProgramCache]: Analyzing trace with hash -543205671, now seen corresponding path program 348 times [2021-05-21 20:35:12,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:12,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440278605] [2021-05-21 20:35:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:12,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:12,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440278605] [2021-05-21 20:35:12,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440278605] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:12,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:12,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:12,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155731141] [2021-05-21 20:35:12,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:12,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:12,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:12,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:12,603 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) [2021-05-21 20:35:12,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:12,832 INFO L93 Difference]: Finished difference Result 32515 states and 162502 transitions. [2021-05-21 20:35:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:12,833 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 [2021-05-21 20:35:12,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:12,927 INFO L225 Difference]: With dead ends: 32515 [2021-05-21 20:35:12,927 INFO L226 Difference]: Without dead ends: 31470 [2021-05-21 20:35:12,927 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 [2021-05-21 20:35:13,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31470 states. [2021-05-21 20:35:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31470 to 13286. [2021-05-21 20:35:14,099 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) [2021-05-21 20:35:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13286 states to 13286 states and 70595 transitions. [2021-05-21 20:35:14,140 INFO L78 Accepts]: Start accepts. Automaton has 13286 states and 70595 transitions. Word has length 33 [2021-05-21 20:35:14,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:14,140 INFO L482 AbstractCegarLoop]: Abstraction has 13286 states and 70595 transitions. [2021-05-21 20:35:14,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand 13286 states and 70595 transitions. [2021-05-21 20:35:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:14,166 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:14,166 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:14,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-05-21 20:35:14,167 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:14,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:14,167 INFO L82 PathProgramCache]: Analyzing trace with hash -198711301, now seen corresponding path program 349 times [2021-05-21 20:35:14,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:14,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970798439] [2021-05-21 20:35:14,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:14,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:14,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970798439] [2021-05-21 20:35:14,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970798439] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:14,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:14,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:14,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711857639] [2021-05-21 20:35:14,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:14,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:14,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:14,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:14,320 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) [2021-05-21 20:35:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:14,562 INFO L93 Difference]: Finished difference Result 32003 states and 160403 transitions. [2021-05-21 20:35:14,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:14,562 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 [2021-05-21 20:35:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:14,655 INFO L225 Difference]: With dead ends: 32003 [2021-05-21 20:35:14,655 INFO L226 Difference]: Without dead ends: 31252 [2021-05-21 20:35:14,656 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:15,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31252 states. [2021-05-21 20:35:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31252 to 13466. [2021-05-21 20:35:15,826 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) [2021-05-21 20:35:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 71423 transitions. [2021-05-21 20:35:15,869 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 71423 transitions. Word has length 33 [2021-05-21 20:35:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:15,869 INFO L482 AbstractCegarLoop]: Abstraction has 13466 states and 71423 transitions. [2021-05-21 20:35:15,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 71423 transitions. [2021-05-21 20:35:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:15,899 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:15,899 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:15,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-05-21 20:35:15,899 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:15,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:15,899 INFO L82 PathProgramCache]: Analyzing trace with hash 757637883, now seen corresponding path program 350 times [2021-05-21 20:35:15,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:15,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656010644] [2021-05-21 20:35:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:16,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:16,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656010644] [2021-05-21 20:35:16,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656010644] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:16,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:16,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:16,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711334642] [2021-05-21 20:35:16,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:16,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:16,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:16,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:16,052 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) [2021-05-21 20:35:16,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:16,417 INFO L93 Difference]: Finished difference Result 32017 states and 160328 transitions. [2021-05-21 20:35:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:16,418 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 [2021-05-21 20:35:16,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:16,521 INFO L225 Difference]: With dead ends: 32017 [2021-05-21 20:35:16,521 INFO L226 Difference]: Without dead ends: 31132 [2021-05-21 20:35:16,521 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 178.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:17,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31132 states. [2021-05-21 20:35:17,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31132 to 13346. [2021-05-21 20:35:17,550 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) [2021-05-21 20:35:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 70871 transitions. [2021-05-21 20:35:17,592 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 70871 transitions. Word has length 33 [2021-05-21 20:35:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:17,592 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 70871 transitions. [2021-05-21 20:35:17,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:17,592 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 70871 transitions. [2021-05-21 20:35:17,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:17,619 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:17,619 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] [2021-05-21 20:35:17,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-05-21 20:35:17,620 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:17,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:17,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1259335769, now seen corresponding path program 351 times [2021-05-21 20:35:17,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:17,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204130981] [2021-05-21 20:35:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:17,745 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-05-21 20:35:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:17,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:17,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204130981] [2021-05-21 20:35:17,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204130981] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:17,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:17,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:17,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807340251] [2021-05-21 20:35:17,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:17,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:17,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:17,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:17,866 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) [2021-05-21 20:35:18,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:18,094 INFO L93 Difference]: Finished difference Result 32001 states and 160338 transitions. [2021-05-21 20:35:18,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:18,094 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:18,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:18,190 INFO L225 Difference]: With dead ends: 32001 [2021-05-21 20:35:18,190 INFO L226 Difference]: Without dead ends: 31250 [2021-05-21 20:35:18,190 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 272.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:18,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31250 states. [2021-05-21 20:35:19,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31250 to 13466. [2021-05-21 20:35:19,372 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) [2021-05-21 20:35:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 71363 transitions. [2021-05-21 20:35:19,412 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 71363 transitions. Word has length 33 [2021-05-21 20:35:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:19,412 INFO L482 AbstractCegarLoop]: Abstraction has 13466 states and 71363 transitions. [2021-05-21 20:35:19,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 71363 transitions. [2021-05-21 20:35:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:19,436 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:19,436 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:19,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-05-21 20:35:19,436 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:19,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:19,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1226931461, now seen corresponding path program 352 times [2021-05-21 20:35:19,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:19,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737576251] [2021-05-21 20:35:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:19,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:19,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737576251] [2021-05-21 20:35:19,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737576251] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:19,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:19,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:19,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602739101] [2021-05-21 20:35:19,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:19,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:19,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:19,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:19,583 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) [2021-05-21 20:35:19,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:19,804 INFO L93 Difference]: Finished difference Result 32013 states and 160258 transitions. [2021-05-21 20:35:19,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:19,804 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 [2021-05-21 20:35:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:19,895 INFO L225 Difference]: With dead ends: 32013 [2021-05-21 20:35:19,896 INFO L226 Difference]: Without dead ends: 31130 [2021-05-21 20:35:19,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:20,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31130 states. [2021-05-21 20:35:21,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31130 to 13346. [2021-05-21 20:35:21,021 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) [2021-05-21 20:35:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13346 states to 13346 states and 70811 transitions. [2021-05-21 20:35:21,062 INFO L78 Accepts]: Start accepts. Automaton has 13346 states and 70811 transitions. Word has length 33 [2021-05-21 20:35:21,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:21,062 INFO L482 AbstractCegarLoop]: Abstraction has 13346 states and 70811 transitions. [2021-05-21 20:35:21,062 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) [2021-05-21 20:35:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 13346 states and 70811 transitions. [2021-05-21 20:35:21,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:21,087 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:21,087 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] [2021-05-21 20:35:21,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-05-21 20:35:21,087 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:21,088 INFO L82 PathProgramCache]: Analyzing trace with hash -595358213, now seen corresponding path program 353 times [2021-05-21 20:35:21,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:21,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711628538] [2021-05-21 20:35:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:21,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:21,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711628538] [2021-05-21 20:35:21,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711628538] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:21,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:21,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:21,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116168619] [2021-05-21 20:35:21,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:21,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:21,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:21,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:21,228 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) [2021-05-21 20:35:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:21,438 INFO L93 Difference]: Finished difference Result 32035 states and 160391 transitions. [2021-05-21 20:35:21,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:21,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:21,530 INFO L225 Difference]: With dead ends: 32035 [2021-05-21 20:35:21,530 INFO L226 Difference]: Without dead ends: 31270 [2021-05-21 20:35:21,530 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 155.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31270 states. [2021-05-21 20:35:22,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31270 to 13472. [2021-05-21 20:35:22,669 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) [2021-05-21 20:35:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13472 states to 13472 states and 71320 transitions. [2021-05-21 20:35:22,710 INFO L78 Accepts]: Start accepts. Automaton has 13472 states and 71320 transitions. Word has length 33 [2021-05-21 20:35:22,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:22,710 INFO L482 AbstractCegarLoop]: Abstraction has 13472 states and 71320 transitions. [2021-05-21 20:35:22,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 13472 states and 71320 transitions. [2021-05-21 20:35:22,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:22,736 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:22,736 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:22,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-05-21 20:35:22,736 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:22,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:22,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1676547545, now seen corresponding path program 354 times [2021-05-21 20:35:22,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:22,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612554880] [2021-05-21 20:35:22,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:22,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:22,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612554880] [2021-05-21 20:35:22,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612554880] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:22,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:22,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:22,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450164854] [2021-05-21 20:35:22,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:22,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:22,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:22,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:22,863 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) [2021-05-21 20:35:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:23,080 INFO L93 Difference]: Finished difference Result 32033 states and 160260 transitions. [2021-05-21 20:35:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:23,080 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 [2021-05-21 20:35:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:23,173 INFO L225 Difference]: With dead ends: 32033 [2021-05-21 20:35:23,174 INFO L226 Difference]: Without dead ends: 31084 [2021-05-21 20:35:23,174 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31084 states. [2021-05-21 20:35:24,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31084 to 13286. [2021-05-21 20:35:24,303 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) [2021-05-21 20:35:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13286 states to 13286 states and 70565 transitions. [2021-05-21 20:35:24,343 INFO L78 Accepts]: Start accepts. Automaton has 13286 states and 70565 transitions. Word has length 33 [2021-05-21 20:35:24,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:24,344 INFO L482 AbstractCegarLoop]: Abstraction has 13286 states and 70565 transitions. [2021-05-21 20:35:24,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 13286 states and 70565 transitions. [2021-05-21 20:35:24,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:24,370 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:24,370 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:24,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-05-21 20:35:24,370 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:24,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:24,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1229165661, now seen corresponding path program 355 times [2021-05-21 20:35:24,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:24,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568112486] [2021-05-21 20:35:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:24,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:24,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568112486] [2021-05-21 20:35:24,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568112486] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:24,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:24,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:24,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377379613] [2021-05-21 20:35:24,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:24,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:24,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:24,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:24,502 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) [2021-05-21 20:35:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:24,700 INFO L93 Difference]: Finished difference Result 32871 states and 164234 transitions. [2021-05-21 20:35:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:24,700 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:24,802 INFO L225 Difference]: With dead ends: 32871 [2021-05-21 20:35:24,802 INFO L226 Difference]: Without dead ends: 31977 [2021-05-21 20:35:24,802 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:25,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31977 states. [2021-05-21 20:35:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31977 to 13700. [2021-05-21 20:35:25,995 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) [2021-05-21 20:35:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13700 states to 13700 states and 72369 transitions. [2021-05-21 20:35:26,038 INFO L78 Accepts]: Start accepts. Automaton has 13700 states and 72369 transitions. Word has length 33 [2021-05-21 20:35:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:26,038 INFO L482 AbstractCegarLoop]: Abstraction has 13700 states and 72369 transitions. [2021-05-21 20:35:26,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 13700 states and 72369 transitions. [2021-05-21 20:35:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:26,066 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:26,066 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:26,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-05-21 20:35:26,066 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:26,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:26,067 INFO L82 PathProgramCache]: Analyzing trace with hash -793895877, now seen corresponding path program 356 times [2021-05-21 20:35:26,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:26,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382301031] [2021-05-21 20:35:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:26,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:26,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382301031] [2021-05-21 20:35:26,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382301031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:26,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:26,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:26,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977662320] [2021-05-21 20:35:26,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:26,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:26,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:26,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:26,198 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) [2021-05-21 20:35:26,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:26,572 INFO L93 Difference]: Finished difference Result 32742 states and 163465 transitions. [2021-05-21 20:35:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:26,572 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:26,668 INFO L225 Difference]: With dead ends: 32742 [2021-05-21 20:35:26,668 INFO L226 Difference]: Without dead ends: 31722 [2021-05-21 20:35:26,668 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 [2021-05-21 20:35:27,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31722 states. [2021-05-21 20:35:27,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31722 to 13445. [2021-05-21 20:35:27,687 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) [2021-05-21 20:35:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13445 states to 13445 states and 71219 transitions. [2021-05-21 20:35:27,728 INFO L78 Accepts]: Start accepts. Automaton has 13445 states and 71219 transitions. Word has length 33 [2021-05-21 20:35:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:27,728 INFO L482 AbstractCegarLoop]: Abstraction has 13445 states and 71219 transitions. [2021-05-21 20:35:27,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 13445 states and 71219 transitions. [2021-05-21 20:35:27,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:27,755 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:27,755 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] [2021-05-21 20:35:27,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-05-21 20:35:27,756 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:27,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:27,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1607754565, now seen corresponding path program 357 times [2021-05-21 20:35:27,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:27,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489356862] [2021-05-21 20:35:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:27,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:27,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489356862] [2021-05-21 20:35:27,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489356862] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:27,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:27,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:27,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067282466] [2021-05-21 20:35:27,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:27,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:28,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:28,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:28,000 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) [2021-05-21 20:35:28,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:28,222 INFO L93 Difference]: Finished difference Result 32804 states and 163843 transitions. [2021-05-21 20:35:28,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:28,222 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:28,321 INFO L225 Difference]: With dead ends: 32804 [2021-05-21 20:35:28,321 INFO L226 Difference]: Without dead ends: 31910 [2021-05-21 20:35:28,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 141.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31910 states. [2021-05-21 20:35:29,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31910 to 13635. [2021-05-21 20:35:29,485 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) [2021-05-21 20:35:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13635 states to 13635 states and 71984 transitions. [2021-05-21 20:35:29,525 INFO L78 Accepts]: Start accepts. Automaton has 13635 states and 71984 transitions. Word has length 33 [2021-05-21 20:35:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:29,525 INFO L482 AbstractCegarLoop]: Abstraction has 13635 states and 71984 transitions. [2021-05-21 20:35:29,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:29,525 INFO L276 IsEmpty]: Start isEmpty. Operand 13635 states and 71984 transitions. [2021-05-21 20:35:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:29,551 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:29,551 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:29,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-05-21 20:35:29,551 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:29,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:29,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2085407557, now seen corresponding path program 358 times [2021-05-21 20:35:29,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:29,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763349424] [2021-05-21 20:35:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:29,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:29,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763349424] [2021-05-21 20:35:29,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763349424] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:29,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:29,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:29,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000524433] [2021-05-21 20:35:29,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:29,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:29,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:29,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:29,684 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) [2021-05-21 20:35:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:29,906 INFO L93 Difference]: Finished difference Result 32673 states and 163070 transitions. [2021-05-21 20:35:29,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:29,906 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:29,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:30,000 INFO L225 Difference]: With dead ends: 32673 [2021-05-21 20:35:30,001 INFO L226 Difference]: Without dead ends: 31720 [2021-05-21 20:35:30,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 156.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31720 states. [2021-05-21 20:35:31,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31720 to 13445. [2021-05-21 20:35:31,127 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) [2021-05-21 20:35:31,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13445 states to 13445 states and 71124 transitions. [2021-05-21 20:35:31,168 INFO L78 Accepts]: Start accepts. Automaton has 13445 states and 71124 transitions. Word has length 33 [2021-05-21 20:35:31,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:31,168 INFO L482 AbstractCegarLoop]: Abstraction has 13445 states and 71124 transitions. [2021-05-21 20:35:31,168 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) [2021-05-21 20:35:31,169 INFO L276 IsEmpty]: Start isEmpty. Operand 13445 states and 71124 transitions. [2021-05-21 20:35:31,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:31,195 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:31,195 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] [2021-05-21 20:35:31,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-05-21 20:35:31,195 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:31,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:31,196 INFO L82 PathProgramCache]: Analyzing trace with hash -308925159, now seen corresponding path program 359 times [2021-05-21 20:35:31,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:31,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115791458] [2021-05-21 20:35:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:31,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:31,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115791458] [2021-05-21 20:35:31,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115791458] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:31,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:31,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:31,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490489395] [2021-05-21 20:35:31,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:31,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:31,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:31,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:31,326 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) [2021-05-21 20:35:31,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:31,557 INFO L93 Difference]: Finished difference Result 32482 states and 162272 transitions. [2021-05-21 20:35:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:31,557 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 [2021-05-21 20:35:31,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:31,658 INFO L225 Difference]: With dead ends: 32482 [2021-05-21 20:35:31,658 INFO L226 Difference]: Without dead ends: 31717 [2021-05-21 20:35:31,658 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 [2021-05-21 20:35:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31717 states. [2021-05-21 20:35:32,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31717 to 13571. [2021-05-21 20:35:32,796 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) [2021-05-21 20:35:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13571 states to 13571 states and 71633 transitions. [2021-05-21 20:35:32,837 INFO L78 Accepts]: Start accepts. Automaton has 13571 states and 71633 transitions. Word has length 33 [2021-05-21 20:35:32,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:32,837 INFO L482 AbstractCegarLoop]: Abstraction has 13571 states and 71633 transitions. [2021-05-21 20:35:32,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 13571 states and 71633 transitions. [2021-05-21 20:35:32,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:32,864 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:32,864 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] [2021-05-21 20:35:32,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-05-21 20:35:32,865 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:32,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1400676603, now seen corresponding path program 360 times [2021-05-21 20:35:32,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:32,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208337491] [2021-05-21 20:35:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:32,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:32,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208337491] [2021-05-21 20:35:32,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208337491] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:32,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:32,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:32,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039715349] [2021-05-21 20:35:32,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:32,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:32,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:32,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:32,994 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) [2021-05-21 20:35:33,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:33,262 INFO L93 Difference]: Finished difference Result 32480 states and 162141 transitions. [2021-05-21 20:35:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:33,262 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:33,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:33,359 INFO L225 Difference]: With dead ends: 32480 [2021-05-21 20:35:33,360 INFO L226 Difference]: Without dead ends: 31299 [2021-05-21 20:35:33,360 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 [2021-05-21 20:35:34,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31299 states. [2021-05-21 20:35:34,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31299 to 13153. [2021-05-21 20:35:34,545 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) [2021-05-21 20:35:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13153 states to 13153 states and 70090 transitions. [2021-05-21 20:35:34,588 INFO L78 Accepts]: Start accepts. Automaton has 13153 states and 70090 transitions. Word has length 33 [2021-05-21 20:35:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:34,588 INFO L482 AbstractCegarLoop]: Abstraction has 13153 states and 70090 transitions. [2021-05-21 20:35:34,588 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) [2021-05-21 20:35:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 13153 states and 70090 transitions. [2021-05-21 20:35:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:34,614 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:34,614 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:34,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-05-21 20:35:34,614 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:34,615 INFO L82 PathProgramCache]: Analyzing trace with hash 60744253, now seen corresponding path program 361 times [2021-05-21 20:35:34,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:34,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043510522] [2021-05-21 20:35:34,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:34,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:34,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043510522] [2021-05-21 20:35:34,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043510522] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:34,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:34,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:34,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165507713] [2021-05-21 20:35:34,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:34,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:34,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:34,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:34,747 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) [2021-05-21 20:35:34,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:34,976 INFO L93 Difference]: Finished difference Result 30141 states and 151826 transitions. [2021-05-21 20:35:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:34,976 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:34,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:35,233 INFO L225 Difference]: With dead ends: 30141 [2021-05-21 20:35:35,233 INFO L226 Difference]: Without dead ends: 29382 [2021-05-21 20:35:35,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 162.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29382 states. [2021-05-21 20:35:36,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29382 to 13371. [2021-05-21 20:35:36,230 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) [2021-05-21 20:35:36,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71163 transitions. [2021-05-21 20:35:36,273 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71163 transitions. Word has length 33 [2021-05-21 20:35:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:36,273 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71163 transitions. [2021-05-21 20:35:36,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71163 transitions. [2021-05-21 20:35:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:36,300 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:36,300 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:36,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-05-21 20:35:36,300 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:36,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:36,300 INFO L82 PathProgramCache]: Analyzing trace with hash -786052709, now seen corresponding path program 362 times [2021-05-21 20:35:36,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:36,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712837685] [2021-05-21 20:35:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:36,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:36,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712837685] [2021-05-21 20:35:36,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712837685] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:36,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:36,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:36,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818834682] [2021-05-21 20:35:36,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:36,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:36,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:36,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:36,439 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) [2021-05-21 20:35:36,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:36,825 INFO L93 Difference]: Finished difference Result 30133 states and 151678 transitions. [2021-05-21 20:35:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:36,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:36,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:36,919 INFO L225 Difference]: With dead ends: 30133 [2021-05-21 20:35:36,920 INFO L226 Difference]: Without dead ends: 29262 [2021-05-21 20:35:36,920 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 [2021-05-21 20:35:37,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29262 states. [2021-05-21 20:35:37,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29262 to 13251. [2021-05-21 20:35:37,936 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) [2021-05-21 20:35:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70615 transitions. [2021-05-21 20:35:37,976 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70615 transitions. Word has length 33 [2021-05-21 20:35:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:37,976 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70615 transitions. [2021-05-21 20:35:37,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70615 transitions. [2021-05-21 20:35:38,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:38,002 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:38,002 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:38,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-05-21 20:35:38,002 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:38,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:38,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1962317285, now seen corresponding path program 363 times [2021-05-21 20:35:38,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:38,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586738799] [2021-05-21 20:35:38,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:38,228 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-05-21 20:35:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:38,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:38,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586738799] [2021-05-21 20:35:38,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586738799] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:38,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:38,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:38,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317151063] [2021-05-21 20:35:38,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:38,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:38,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:38,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:38,254 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) [2021-05-21 20:35:38,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:38,496 INFO L93 Difference]: Finished difference Result 30117 states and 151670 transitions. [2021-05-21 20:35:38,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:38,496 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 [2021-05-21 20:35:38,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:38,586 INFO L225 Difference]: With dead ends: 30117 [2021-05-21 20:35:38,586 INFO L226 Difference]: Without dead ends: 29358 [2021-05-21 20:35:38,586 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 276.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29358 states. [2021-05-21 20:35:39,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29358 to 13363. [2021-05-21 20:35:39,590 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) [2021-05-21 20:35:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71079 transitions. [2021-05-21 20:35:39,787 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71079 transitions. Word has length 33 [2021-05-21 20:35:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:39,787 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71079 transitions. [2021-05-21 20:35:39,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71079 transitions. [2021-05-21 20:35:39,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:39,815 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:39,815 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] [2021-05-21 20:35:39,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-05-21 20:35:39,815 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:39,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:39,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1536623131, now seen corresponding path program 364 times [2021-05-21 20:35:39,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:39,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073218450] [2021-05-21 20:35:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:39,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:39,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073218450] [2021-05-21 20:35:39,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073218450] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:39,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:39,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:39,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836081094] [2021-05-21 20:35:39,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:39,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:39,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:39,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:39,941 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) [2021-05-21 20:35:40,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:40,169 INFO L93 Difference]: Finished difference Result 30093 states and 151466 transitions. [2021-05-21 20:35:40,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:40,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:40,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:40,259 INFO L225 Difference]: With dead ends: 30093 [2021-05-21 20:35:40,259 INFO L226 Difference]: Without dead ends: 29246 [2021-05-21 20:35:40,259 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29246 states. [2021-05-21 20:35:41,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29246 to 13251. [2021-05-21 20:35:41,373 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) [2021-05-21 20:35:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70559 transitions. [2021-05-21 20:35:41,413 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70559 transitions. Word has length 33 [2021-05-21 20:35:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:41,413 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70559 transitions. [2021-05-21 20:35:41,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:41,413 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70559 transitions. [2021-05-21 20:35:41,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:41,440 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:41,440 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:41,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-05-21 20:35:41,440 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:41,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:41,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1475901945, now seen corresponding path program 365 times [2021-05-21 20:35:41,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:41,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871519465] [2021-05-21 20:35:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:41,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:41,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871519465] [2021-05-21 20:35:41,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871519465] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:41,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:41,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:41,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788984151] [2021-05-21 20:35:41,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:41,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:41,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:41,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:41,568 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) [2021-05-21 20:35:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:41,797 INFO L93 Difference]: Finished difference Result 30101 states and 151558 transitions. [2021-05-21 20:35:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:41,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:41,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:41,884 INFO L225 Difference]: With dead ends: 30101 [2021-05-21 20:35:41,884 INFO L226 Difference]: Without dead ends: 29350 [2021-05-21 20:35:41,884 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:42,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29350 states. [2021-05-21 20:35:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29350 to 13363. [2021-05-21 20:35:42,999 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) [2021-05-21 20:35:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71023 transitions. [2021-05-21 20:35:43,040 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71023 transitions. Word has length 33 [2021-05-21 20:35:43,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:43,040 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71023 transitions. [2021-05-21 20:35:43,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:43,040 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71023 transitions. [2021-05-21 20:35:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:43,066 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:43,066 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:43,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-05-21 20:35:43,066 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:43,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:43,066 INFO L82 PathProgramCache]: Analyzing trace with hash 994999899, now seen corresponding path program 366 times [2021-05-21 20:35:43,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:43,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508530717] [2021-05-21 20:35:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:43,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:43,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508530717] [2021-05-21 20:35:43,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508530717] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:43,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:43,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:43,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817965488] [2021-05-21 20:35:43,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:43,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:43,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:43,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:43,191 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) [2021-05-21 20:35:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:43,404 INFO L93 Difference]: Finished difference Result 30085 states and 151382 transitions. [2021-05-21 20:35:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:43,501 INFO L225 Difference]: With dead ends: 30085 [2021-05-21 20:35:43,501 INFO L226 Difference]: Without dead ends: 29182 [2021-05-21 20:35:43,501 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:44,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29182 states. [2021-05-21 20:35:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29182 to 13195. [2021-05-21 20:35:44,619 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) [2021-05-21 20:35:44,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 70327 transitions. [2021-05-21 20:35:44,660 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 70327 transitions. Word has length 33 [2021-05-21 20:35:44,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:44,660 INFO L482 AbstractCegarLoop]: Abstraction has 13195 states and 70327 transitions. [2021-05-21 20:35:44,661 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) [2021-05-21 20:35:44,661 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 70327 transitions. [2021-05-21 20:35:44,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:44,687 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:44,687 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] [2021-05-21 20:35:44,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-05-21 20:35:44,687 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:44,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:44,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1180680515, now seen corresponding path program 367 times [2021-05-21 20:35:44,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:44,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149898551] [2021-05-21 20:35:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:44,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:44,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149898551] [2021-05-21 20:35:44,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149898551] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:44,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:44,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:44,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927939830] [2021-05-21 20:35:44,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:44,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:44,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:44,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:44,833 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) [2021-05-21 20:35:45,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:45,061 INFO L93 Difference]: Finished difference Result 30195 states and 152015 transitions. [2021-05-21 20:35:45,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:45,061 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:45,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:45,150 INFO L225 Difference]: With dead ends: 30195 [2021-05-21 20:35:45,151 INFO L226 Difference]: Without dead ends: 29436 [2021-05-21 20:35:45,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 174.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29436 states. [2021-05-21 20:35:46,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29436 to 13375. [2021-05-21 20:35:46,311 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) [2021-05-21 20:35:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13375 states to 13375 states and 71155 transitions. [2021-05-21 20:35:46,351 INFO L78 Accepts]: Start accepts. Automaton has 13375 states and 71155 transitions. Word has length 33 [2021-05-21 20:35:46,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:46,351 INFO L482 AbstractCegarLoop]: Abstraction has 13375 states and 71155 transitions. [2021-05-21 20:35:46,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:46,351 INFO L276 IsEmpty]: Start isEmpty. Operand 13375 states and 71155 transitions. [2021-05-21 20:35:46,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:46,376 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:46,376 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:46,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-05-21 20:35:46,376 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:46,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:46,377 INFO L82 PathProgramCache]: Analyzing trace with hash -2027477477, now seen corresponding path program 368 times [2021-05-21 20:35:46,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:46,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570104406] [2021-05-21 20:35:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:46,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:46,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570104406] [2021-05-21 20:35:46,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570104406] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:46,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:46,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:46,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303284756] [2021-05-21 20:35:46,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:46,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:46,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:46,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:46,504 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) [2021-05-21 20:35:46,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:46,712 INFO L93 Difference]: Finished difference Result 30187 states and 151867 transitions. [2021-05-21 20:35:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:46,712 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:46,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:46,800 INFO L225 Difference]: With dead ends: 30187 [2021-05-21 20:35:46,801 INFO L226 Difference]: Without dead ends: 29316 [2021-05-21 20:35:46,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:47,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29316 states. [2021-05-21 20:35:47,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29316 to 13255. [2021-05-21 20:35:47,905 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) [2021-05-21 20:35:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13255 states to 13255 states and 70603 transitions. [2021-05-21 20:35:47,946 INFO L78 Accepts]: Start accepts. Automaton has 13255 states and 70603 transitions. Word has length 33 [2021-05-21 20:35:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:47,947 INFO L482 AbstractCegarLoop]: Abstraction has 13255 states and 70603 transitions. [2021-05-21 20:35:47,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 13255 states and 70603 transitions. [2021-05-21 20:35:47,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:47,972 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:47,972 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] [2021-05-21 20:35:47,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-05-21 20:35:47,972 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:47,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:47,972 INFO L82 PathProgramCache]: Analyzing trace with hash 252278461, now seen corresponding path program 369 times [2021-05-21 20:35:47,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:47,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125014825] [2021-05-21 20:35:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:48,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:48,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125014825] [2021-05-21 20:35:48,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125014825] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:48,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:48,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:48,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312649877] [2021-05-21 20:35:48,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:48,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:48,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:48,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:48,108 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) [2021-05-21 20:35:48,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:48,464 INFO L93 Difference]: Finished difference Result 30213 states and 152016 transitions. [2021-05-21 20:35:48,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:48,464 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:48,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:48,554 INFO L225 Difference]: With dead ends: 30213 [2021-05-21 20:35:48,554 INFO L226 Difference]: Without dead ends: 29454 [2021-05-21 20:35:48,554 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 [2021-05-21 20:35:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29454 states. [2021-05-21 20:35:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29454 to 13379. [2021-05-21 20:35:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 5.31521901629541) internal successors, (71107), 13378 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) [2021-05-21 20:35:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71107 transitions. [2021-05-21 20:35:49,593 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71107 transitions. Word has length 33 [2021-05-21 20:35:49,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:49,593 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71107 transitions. [2021-05-21 20:35:49,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:49,593 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71107 transitions. [2021-05-21 20:35:49,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:49,618 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:49,618 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:49,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-05-21 20:35:49,618 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:49,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:49,618 INFO L82 PathProgramCache]: Analyzing trace with hash 678018749, now seen corresponding path program 370 times [2021-05-21 20:35:49,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:49,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717524310] [2021-05-21 20:35:49,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:49,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:49,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717524310] [2021-05-21 20:35:49,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717524310] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:49,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:49,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:49,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618920174] [2021-05-21 20:35:49,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:49,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:49,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:49,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:49,743 INFO L87 Difference]: Start difference. First operand 13379 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) [2021-05-21 20:35:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:50,056 INFO L93 Difference]: Finished difference Result 30219 states and 151909 transitions. [2021-05-21 20:35:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:50,057 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 [2021-05-21 20:35:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:50,143 INFO L225 Difference]: With dead ends: 30219 [2021-05-21 20:35:50,144 INFO L226 Difference]: Without dead ends: 29330 [2021-05-21 20:35:50,144 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:50,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29330 states. [2021-05-21 20:35:51,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29330 to 13255. [2021-05-21 20:35:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13255 states, 13254 states have (on average 5.322393239776671) internal successors, (70543), 13254 states have internal predecessors, (70543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:51,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13255 states to 13255 states and 70543 transitions. [2021-05-21 20:35:51,204 INFO L78 Accepts]: Start accepts. Automaton has 13255 states and 70543 transitions. Word has length 33 [2021-05-21 20:35:51,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:51,204 INFO L482 AbstractCegarLoop]: Abstraction has 13255 states and 70543 transitions. [2021-05-21 20:35:51,205 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) [2021-05-21 20:35:51,205 INFO L276 IsEmpty]: Start isEmpty. Operand 13255 states and 70543 transitions. [2021-05-21 20:35:51,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:51,328 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:51,328 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:51,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-05-21 20:35:51,328 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:51,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:51,328 INFO L82 PathProgramCache]: Analyzing trace with hash -604469605, now seen corresponding path program 371 times [2021-05-21 20:35:51,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:51,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035729512] [2021-05-21 20:35:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:51,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:51,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035729512] [2021-05-21 20:35:51,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035729512] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:51,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:51,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:51,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896149855] [2021-05-21 20:35:51,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:51,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:51,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:51,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:51,468 INFO L87 Difference]: Start difference. First operand 13255 states and 70543 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:51,677 INFO L93 Difference]: Finished difference Result 30193 states and 151884 transitions. [2021-05-21 20:35:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:51,677 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:51,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:51,767 INFO L225 Difference]: With dead ends: 30193 [2021-05-21 20:35:51,767 INFO L226 Difference]: Without dead ends: 29442 [2021-05-21 20:35:51,767 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 [2021-05-21 20:35:52,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29442 states. [2021-05-21 20:35:52,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29442 to 13375. [2021-05-21 20:35:52,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13375 states, 13374 states have (on average 5.311425153282489) internal successors, (71035), 13374 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) [2021-05-21 20:35:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13375 states to 13375 states and 71035 transitions. [2021-05-21 20:35:52,945 INFO L78 Accepts]: Start accepts. Automaton has 13375 states and 71035 transitions. Word has length 33 [2021-05-21 20:35:52,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:52,945 INFO L482 AbstractCegarLoop]: Abstraction has 13375 states and 71035 transitions. [2021-05-21 20:35:52,945 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) [2021-05-21 20:35:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand 13375 states and 71035 transitions. [2021-05-21 20:35:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:52,972 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:52,972 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] [2021-05-21 20:35:52,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-05-21 20:35:52,972 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:52,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:52,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1915050627, now seen corresponding path program 372 times [2021-05-21 20:35:52,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:52,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979410890] [2021-05-21 20:35:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:53,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:53,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979410890] [2021-05-21 20:35:53,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979410890] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:53,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:53,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:53,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681762382] [2021-05-21 20:35:53,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:53,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:53,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:53,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:53,118 INFO L87 Difference]: Start difference. First operand 13375 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) [2021-05-21 20:35:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:53,331 INFO L93 Difference]: Finished difference Result 30207 states and 151809 transitions. [2021-05-21 20:35:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:53,332 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 [2021-05-21 20:35:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:53,418 INFO L225 Difference]: With dead ends: 30207 [2021-05-21 20:35:53,418 INFO L226 Difference]: Without dead ends: 29262 [2021-05-21 20:35:53,419 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 170.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29262 states. [2021-05-21 20:35:54,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29262 to 13195. [2021-05-21 20:35:54,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13195 states, 13194 states have (on average 5.328103683492497) internal successors, (70299), 13194 states have internal predecessors, (70299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:54,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 70299 transitions. [2021-05-21 20:35:54,571 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 70299 transitions. Word has length 33 [2021-05-21 20:35:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:54,571 INFO L482 AbstractCegarLoop]: Abstraction has 13195 states and 70299 transitions. [2021-05-21 20:35:54,571 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) [2021-05-21 20:35:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 70299 transitions. [2021-05-21 20:35:54,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:54,597 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:54,597 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:54,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-05-21 20:35:54,597 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:54,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:54,598 INFO L82 PathProgramCache]: Analyzing trace with hash 118148891, now seen corresponding path program 373 times [2021-05-21 20:35:54,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:54,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822478330] [2021-05-21 20:35:54,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:54,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:54,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822478330] [2021-05-21 20:35:54,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822478330] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:54,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:54,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:54,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022181574] [2021-05-21 20:35:54,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:54,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:54,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:54,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:54,727 INFO L87 Difference]: Start difference. First operand 13195 states and 70299 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:54,940 INFO L93 Difference]: Finished difference Result 30135 states and 151731 transitions. [2021-05-21 20:35:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:54,940 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:54,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:55,029 INFO L225 Difference]: With dead ends: 30135 [2021-05-21 20:35:55,029 INFO L226 Difference]: Without dead ends: 29376 [2021-05-21 20:35:55,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 154.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:55,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29376 states. [2021-05-21 20:35:56,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29376 to 13363. [2021-05-21 20:35:56,163 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) [2021-05-21 20:35:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71079 transitions. [2021-05-21 20:35:56,205 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71079 transitions. Word has length 33 [2021-05-21 20:35:56,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:56,205 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71079 transitions. [2021-05-21 20:35:56,205 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) [2021-05-21 20:35:56,205 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71079 transitions. [2021-05-21 20:35:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:56,232 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:56,232 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] [2021-05-21 20:35:56,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-05-21 20:35:56,232 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:56,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:56,232 INFO L82 PathProgramCache]: Analyzing trace with hash -677877989, now seen corresponding path program 374 times [2021-05-21 20:35:56,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:56,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112585776] [2021-05-21 20:35:56,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:56,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:56,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112585776] [2021-05-21 20:35:56,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112585776] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:56,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:56,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:56,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345455281] [2021-05-21 20:35:56,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:56,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:56,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:56,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:56,356 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) [2021-05-21 20:35:56,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:56,577 INFO L93 Difference]: Finished difference Result 30111 states and 151527 transitions. [2021-05-21 20:35:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:56,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:56,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:56,664 INFO L225 Difference]: With dead ends: 30111 [2021-05-21 20:35:56,665 INFO L226 Difference]: Without dead ends: 29264 [2021-05-21 20:35:56,665 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:57,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29264 states. [2021-05-21 20:35:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29264 to 13251. [2021-05-21 20:35:57,821 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) [2021-05-21 20:35:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70559 transitions. [2021-05-21 20:35:57,863 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70559 transitions. Word has length 33 [2021-05-21 20:35:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:57,863 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70559 transitions. [2021-05-21 20:35:57,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70559 transitions. [2021-05-21 20:35:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:57,889 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:57,889 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] [2021-05-21 20:35:57,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-05-21 20:35:57,889 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:57,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:57,890 INFO L82 PathProgramCache]: Analyzing trace with hash -616311299, now seen corresponding path program 375 times [2021-05-21 20:35:57,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:57,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524645903] [2021-05-21 20:35:57,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:58,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:58,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524645903] [2021-05-21 20:35:58,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524645903] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:58,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:58,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:58,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253842901] [2021-05-21 20:35:58,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:58,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:58,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:58,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:58,015 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) [2021-05-21 20:35:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:58,234 INFO L93 Difference]: Finished difference Result 30177 states and 151836 transitions. [2021-05-21 20:35:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:58,235 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:35:58,325 INFO L225 Difference]: With dead ends: 30177 [2021-05-21 20:35:58,325 INFO L226 Difference]: Without dead ends: 29418 [2021-05-21 20:35:58,325 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:35:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29418 states. [2021-05-21 20:35:59,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29418 to 13375. [2021-05-21 20:35:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13375 states, 13374 states have (on average 5.313518767758337) internal successors, (71063), 13374 states have internal predecessors, (71063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13375 states to 13375 states and 71063 transitions. [2021-05-21 20:35:59,490 INFO L78 Accepts]: Start accepts. Automaton has 13375 states and 71063 transitions. Word has length 33 [2021-05-21 20:35:59,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:35:59,490 INFO L482 AbstractCegarLoop]: Abstraction has 13375 states and 71063 transitions. [2021-05-21 20:35:59,490 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) [2021-05-21 20:35:59,490 INFO L276 IsEmpty]: Start isEmpty. Operand 13375 states and 71063 transitions. [2021-05-21 20:35:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:35:59,516 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:35:59,516 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:35:59,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-05-21 20:35:59,516 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:35:59,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:35:59,516 INFO L82 PathProgramCache]: Analyzing trace with hash 2136065819, now seen corresponding path program 376 times [2021-05-21 20:35:59,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:35:59,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040893376] [2021-05-21 20:35:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:35:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:35:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:35:59,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:35:59,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040893376] [2021-05-21 20:35:59,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040893376] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:35:59,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:35:59,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:35:59,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564139970] [2021-05-21 20:35:59,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:35:59,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:35:59,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:35:59,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:35:59,642 INFO L87 Difference]: Start difference. First operand 13375 states and 71063 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:35:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:35:59,866 INFO L93 Difference]: Finished difference Result 30183 states and 151729 transitions. [2021-05-21 20:35:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:35:59,866 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:35:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:00,186 INFO L225 Difference]: With dead ends: 30183 [2021-05-21 20:36:00,186 INFO L226 Difference]: Without dead ends: 29294 [2021-05-21 20:36:00,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:00,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29294 states. [2021-05-21 20:36:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29294 to 13251. [2021-05-21 20:36:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 5.320981132075472) internal successors, (70503), 13250 states have internal predecessors, (70503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70503 transitions. [2021-05-21 20:36:01,181 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70503 transitions. Word has length 33 [2021-05-21 20:36:01,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:01,182 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70503 transitions. [2021-05-21 20:36:01,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:01,182 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70503 transitions. [2021-05-21 20:36:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:01,207 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:01,207 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:01,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-05-21 20:36:01,207 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:01,207 INFO L82 PathProgramCache]: Analyzing trace with hash 436645659, now seen corresponding path program 377 times [2021-05-21 20:36:01,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:01,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673662108] [2021-05-21 20:36:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:01,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:01,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673662108] [2021-05-21 20:36:01,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673662108] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:01,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:01,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:01,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364114694] [2021-05-21 20:36:01,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:01,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:01,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:01,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:01,341 INFO L87 Difference]: Start difference. First operand 13251 states and 70503 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:01,685 INFO L93 Difference]: Finished difference Result 30117 states and 151544 transitions. [2021-05-21 20:36:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:01,686 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:01,776 INFO L225 Difference]: With dead ends: 30117 [2021-05-21 20:36:01,776 INFO L226 Difference]: Without dead ends: 29382 [2021-05-21 20:36:01,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 158.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29382 states. [2021-05-21 20:36:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29382 to 13363. [2021-05-21 20:36:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.311106121838048) internal successors, (70967), 13362 states have internal predecessors, (70967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 70967 transitions. [2021-05-21 20:36:02,837 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 70967 transitions. Word has length 33 [2021-05-21 20:36:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:02,837 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 70967 transitions. [2021-05-21 20:36:02,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 70967 transitions. [2021-05-21 20:36:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:02,862 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:02,862 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:02,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-05-21 20:36:02,862 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:02,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:02,863 INFO L82 PathProgramCache]: Analyzing trace with hash -180877699, now seen corresponding path program 378 times [2021-05-21 20:36:02,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:02,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670089586] [2021-05-21 20:36:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:03,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:03,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670089586] [2021-05-21 20:36:03,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670089586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:03,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:03,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:03,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981902162] [2021-05-21 20:36:03,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:03,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:03,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:03,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:03,086 INFO L87 Difference]: Start difference. First operand 13363 states and 70967 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:03,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:03,304 INFO L93 Difference]: Finished difference Result 30147 states and 151541 transitions. [2021-05-21 20:36:03,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:03,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:03,392 INFO L225 Difference]: With dead ends: 30147 [2021-05-21 20:36:03,392 INFO L226 Difference]: Without dead ends: 29214 [2021-05-21 20:36:03,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 247.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29214 states. [2021-05-21 20:36:04,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29214 to 13195. [2021-05-21 20:36:04,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13195 states, 13194 states have (on average 5.3259815067454905) internal successors, (70271), 13194 states have internal predecessors, (70271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:04,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 70271 transitions. [2021-05-21 20:36:04,592 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 70271 transitions. Word has length 33 [2021-05-21 20:36:04,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:04,592 INFO L482 AbstractCegarLoop]: Abstraction has 13195 states and 70271 transitions. [2021-05-21 20:36:04,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:04,592 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 70271 transitions. [2021-05-21 20:36:04,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:04,620 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:04,620 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] [2021-05-21 20:36:04,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-05-21 20:36:04,620 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:04,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:04,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1711675527, now seen corresponding path program 379 times [2021-05-21 20:36:04,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:04,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826231675] [2021-05-21 20:36:04,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:04,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:04,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826231675] [2021-05-21 20:36:04,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826231675] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:04,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:04,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:04,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970421174] [2021-05-21 20:36:04,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:04,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:04,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:04,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:04,757 INFO L87 Difference]: Start difference. First operand 13195 states and 70271 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:04,969 INFO L93 Difference]: Finished difference Result 30107 states and 151603 transitions. [2021-05-21 20:36:04,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:04,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:04,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:05,054 INFO L225 Difference]: With dead ends: 30107 [2021-05-21 20:36:05,054 INFO L226 Difference]: Without dead ends: 29356 [2021-05-21 20:36:05,054 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 [2021-05-21 20:36:05,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2021-05-21 20:36:06,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 13363. [2021-05-21 20:36:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.317392605897321) internal successors, (71051), 13362 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) [2021-05-21 20:36:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71051 transitions. [2021-05-21 20:36:06,201 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71051 transitions. Word has length 33 [2021-05-21 20:36:06,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:06,202 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71051 transitions. [2021-05-21 20:36:06,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71051 transitions. [2021-05-21 20:36:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:06,227 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:06,227 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] [2021-05-21 20:36:06,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-05-21 20:36:06,227 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2102389723, now seen corresponding path program 380 times [2021-05-21 20:36:06,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:06,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682852118] [2021-05-21 20:36:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:06,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:06,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682852118] [2021-05-21 20:36:06,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682852118] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:06,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:06,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:06,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119568524] [2021-05-21 20:36:06,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:06,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:06,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:06,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:06,366 INFO L87 Difference]: Start difference. First operand 13363 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) [2021-05-21 20:36:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:06,575 INFO L93 Difference]: Finished difference Result 30091 states and 151427 transitions. [2021-05-21 20:36:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:06,575 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 [2021-05-21 20:36:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:06,663 INFO L225 Difference]: With dead ends: 30091 [2021-05-21 20:36:06,663 INFO L226 Difference]: Without dead ends: 29244 [2021-05-21 20:36:06,663 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 [2021-05-21 20:36:07,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29244 states. [2021-05-21 20:36:07,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29244 to 13251. [2021-05-21 20:36:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 5.323094339622641) internal successors, (70531), 13250 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) [2021-05-21 20:36:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70531 transitions. [2021-05-21 20:36:07,831 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70531 transitions. Word has length 33 [2021-05-21 20:36:07,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:07,831 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70531 transitions. [2021-05-21 20:36:07,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70531 transitions. [2021-05-21 20:36:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:07,859 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:07,859 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] [2021-05-21 20:36:07,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-05-21 20:36:07,859 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:07,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:07,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1848831579, now seen corresponding path program 381 times [2021-05-21 20:36:07,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:07,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614075793] [2021-05-21 20:36:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:08,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:08,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614075793] [2021-05-21 20:36:08,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614075793] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:08,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:08,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:08,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674364237] [2021-05-21 20:36:08,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:08,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:08,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:08,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:08,020 INFO L87 Difference]: Start difference. First operand 13251 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) [2021-05-21 20:36:08,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:08,239 INFO L93 Difference]: Finished difference Result 30145 states and 151692 transitions. [2021-05-21 20:36:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:08,239 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:08,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:08,327 INFO L225 Difference]: With dead ends: 30145 [2021-05-21 20:36:08,328 INFO L226 Difference]: Without dead ends: 29394 [2021-05-21 20:36:08,328 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 185.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29394 states. [2021-05-21 20:36:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29394 to 13371. [2021-05-21 20:36:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.3121166791323855) internal successors, (71023), 13370 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) [2021-05-21 20:36:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71023 transitions. [2021-05-21 20:36:09,531 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71023 transitions. Word has length 33 [2021-05-21 20:36:09,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:09,531 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71023 transitions. [2021-05-21 20:36:09,531 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71023 transitions. [2021-05-21 20:36:09,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:09,556 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:09,556 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:09,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-05-21 20:36:09,556 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:09,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:09,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1430079909, now seen corresponding path program 382 times [2021-05-21 20:36:09,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:09,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972032063] [2021-05-21 20:36:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:09,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:09,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972032063] [2021-05-21 20:36:09,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972032063] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:09,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:09,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:09,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927197249] [2021-05-21 20:36:09,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:09,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:09,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:09,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:09,711 INFO L87 Difference]: Start difference. First operand 13371 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) [2021-05-21 20:36:09,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:09,929 INFO L93 Difference]: Finished difference Result 30159 states and 151617 transitions. [2021-05-21 20:36:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:09,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:09,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:10,018 INFO L225 Difference]: With dead ends: 30159 [2021-05-21 20:36:10,018 INFO L226 Difference]: Without dead ends: 29274 [2021-05-21 20:36:10,018 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 179.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29274 states. [2021-05-21 20:36:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29274 to 13251. [2021-05-21 20:36:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 5.318867924528302) internal successors, (70475), 13250 states have internal predecessors, (70475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70475 transitions. [2021-05-21 20:36:11,216 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70475 transitions. Word has length 33 [2021-05-21 20:36:11,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:11,216 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70475 transitions. [2021-05-21 20:36:11,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:11,216 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70475 transitions. [2021-05-21 20:36:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:11,242 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:11,242 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] [2021-05-21 20:36:11,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-05-21 20:36:11,242 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1059445309, now seen corresponding path program 383 times [2021-05-21 20:36:11,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:11,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339307208] [2021-05-21 20:36:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:11,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:11,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339307208] [2021-05-21 20:36:11,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339307208] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:11,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:11,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:11,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052735099] [2021-05-21 20:36:11,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:11,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:11,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:11,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:11,396 INFO L87 Difference]: Start difference. First operand 13251 states and 70475 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:11,613 INFO L93 Difference]: Finished difference Result 30105 states and 151472 transitions. [2021-05-21 20:36:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:11,613 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 [2021-05-21 20:36:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:11,869 INFO L225 Difference]: With dead ends: 30105 [2021-05-21 20:36:11,869 INFO L226 Difference]: Without dead ends: 29370 [2021-05-21 20:36:11,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 175.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:12,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29370 states. [2021-05-21 20:36:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29370 to 13363. [2021-05-21 20:36:12,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.309010627151624) internal successors, (70939), 13362 states have internal predecessors, (70939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:12,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 70939 transitions. [2021-05-21 20:36:12,886 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 70939 transitions. Word has length 33 [2021-05-21 20:36:12,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:12,886 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 70939 transitions. [2021-05-21 20:36:12,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:12,886 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 70939 transitions. [2021-05-21 20:36:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:12,912 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:12,912 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:12,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-05-21 20:36:12,912 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:12,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:12,912 INFO L82 PathProgramCache]: Analyzing trace with hash -903909605, now seen corresponding path program 384 times [2021-05-21 20:36:12,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:12,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826247238] [2021-05-21 20:36:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:13,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:13,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826247238] [2021-05-21 20:36:13,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826247238] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:13,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:13,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:13,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18287706] [2021-05-21 20:36:13,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:13,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:13,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:13,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:13,058 INFO L87 Difference]: Start difference. First operand 13363 states and 70939 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:13,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:13,450 INFO L93 Difference]: Finished difference Result 30135 states and 151469 transitions. [2021-05-21 20:36:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:13,450 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:13,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:13,546 INFO L225 Difference]: With dead ends: 30135 [2021-05-21 20:36:13,546 INFO L226 Difference]: Without dead ends: 29174 [2021-05-21 20:36:13,546 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 [2021-05-21 20:36:14,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29174 states. [2021-05-21 20:36:14,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29174 to 13167. [2021-05-21 20:36:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13167 states, 13166 states have (on average 5.329560990429895) internal successors, (70169), 13166 states have internal predecessors, (70169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13167 states to 13167 states and 70169 transitions. [2021-05-21 20:36:14,615 INFO L78 Accepts]: Start accepts. Automaton has 13167 states and 70169 transitions. Word has length 33 [2021-05-21 20:36:14,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:14,615 INFO L482 AbstractCegarLoop]: Abstraction has 13167 states and 70169 transitions. [2021-05-21 20:36:14,615 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) [2021-05-21 20:36:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 13167 states and 70169 transitions. [2021-05-21 20:36:14,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:14,643 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:14,643 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:14,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-05-21 20:36:14,644 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:14,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:14,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1736742175, now seen corresponding path program 385 times [2021-05-21 20:36:14,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:14,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010121517] [2021-05-21 20:36:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:14,835 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-05-21 20:36:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:14,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:14,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010121517] [2021-05-21 20:36:14,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010121517] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:14,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:14,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:14,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755444364] [2021-05-21 20:36:14,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:14,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:14,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:14,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:14,887 INFO L87 Difference]: Start difference. First operand 13167 states and 70169 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:15,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:15,109 INFO L93 Difference]: Finished difference Result 30139 states and 151807 transitions. [2021-05-21 20:36:15,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:15,109 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:15,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:15,202 INFO L225 Difference]: With dead ends: 30139 [2021-05-21 20:36:15,202 INFO L226 Difference]: Without dead ends: 29380 [2021-05-21 20:36:15,202 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 266.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29380 states. [2021-05-21 20:36:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29380 to 13371. [2021-05-21 20:36:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.3215407629020195) internal successors, (71149), 13370 states have internal predecessors, (71149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71149 transitions. [2021-05-21 20:36:16,427 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71149 transitions. Word has length 33 [2021-05-21 20:36:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:16,427 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71149 transitions. [2021-05-21 20:36:16,427 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) [2021-05-21 20:36:16,427 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71149 transitions. [2021-05-21 20:36:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:16,455 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:16,455 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] [2021-05-21 20:36:16,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-05-21 20:36:16,455 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:16,455 INFO L82 PathProgramCache]: Analyzing trace with hash 889945213, now seen corresponding path program 386 times [2021-05-21 20:36:16,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:16,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211793062] [2021-05-21 20:36:16,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:16,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:16,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211793062] [2021-05-21 20:36:16,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211793062] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:16,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:16,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:16,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923269693] [2021-05-21 20:36:16,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:16,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:16,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:16,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:16,582 INFO L87 Difference]: Start difference. First operand 13371 states and 71149 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:16,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:16,791 INFO L93 Difference]: Finished difference Result 30131 states and 151659 transitions. [2021-05-21 20:36:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:16,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:16,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:16,877 INFO L225 Difference]: With dead ends: 30131 [2021-05-21 20:36:16,877 INFO L226 Difference]: Without dead ends: 29260 [2021-05-21 20:36:16,877 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:17,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29260 states. [2021-05-21 20:36:17,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29260 to 13251. [2021-05-21 20:36:17,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 5.328377358490566) internal successors, (70601), 13250 states have internal predecessors, (70601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70601 transitions. [2021-05-21 20:36:18,033 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70601 transitions. Word has length 33 [2021-05-21 20:36:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:18,033 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70601 transitions. [2021-05-21 20:36:18,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70601 transitions. [2021-05-21 20:36:18,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:18,060 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:18,060 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:18,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-05-21 20:36:18,060 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:18,060 INFO L82 PathProgramCache]: Analyzing trace with hash -286319363, now seen corresponding path program 387 times [2021-05-21 20:36:18,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:18,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934426316] [2021-05-21 20:36:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:18,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:18,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934426316] [2021-05-21 20:36:18,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934426316] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:18,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:18,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:18,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924651246] [2021-05-21 20:36:18,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:18,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:18,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:18,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:18,196 INFO L87 Difference]: Start difference. First operand 13251 states and 70601 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:18,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:18,423 INFO L93 Difference]: Finished difference Result 30115 states and 151651 transitions. [2021-05-21 20:36:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:18,423 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 [2021-05-21 20:36:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:18,513 INFO L225 Difference]: With dead ends: 30115 [2021-05-21 20:36:18,513 INFO L226 Difference]: Without dead ends: 29356 [2021-05-21 20:36:18,513 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 [2021-05-21 20:36:19,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29356 states. [2021-05-21 20:36:19,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29356 to 13363. [2021-05-21 20:36:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.318440353240533) internal successors, (71065), 13362 states have internal predecessors, (71065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71065 transitions. [2021-05-21 20:36:19,667 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71065 transitions. Word has length 33 [2021-05-21 20:36:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:19,668 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71065 transitions. [2021-05-21 20:36:19,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71065 transitions. [2021-05-21 20:36:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:19,694 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:19,694 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:19,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-05-21 20:36:19,694 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:19,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:19,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1082346243, now seen corresponding path program 388 times [2021-05-21 20:36:19,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:19,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360535874] [2021-05-21 20:36:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:19,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:19,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360535874] [2021-05-21 20:36:19,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360535874] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:19,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:19,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:19,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044343333] [2021-05-21 20:36:19,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:19,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:19,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:19,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:19,820 INFO L87 Difference]: Start difference. First operand 13363 states and 71065 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:20,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:20,045 INFO L93 Difference]: Finished difference Result 30091 states and 151447 transitions. [2021-05-21 20:36:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:20,045 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 [2021-05-21 20:36:20,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:20,134 INFO L225 Difference]: With dead ends: 30091 [2021-05-21 20:36:20,134 INFO L226 Difference]: Without dead ends: 29244 [2021-05-21 20:36:20,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 149.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:20,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29244 states. [2021-05-21 20:36:21,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29244 to 13251. [2021-05-21 20:36:21,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 5.324150943396226) internal successors, (70545), 13250 states have internal predecessors, (70545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70545 transitions. [2021-05-21 20:36:21,269 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70545 transitions. Word has length 33 [2021-05-21 20:36:21,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:21,269 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70545 transitions. [2021-05-21 20:36:21,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:21,269 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70545 transitions. [2021-05-21 20:36:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:21,295 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:21,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:21,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-05-21 20:36:21,295 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:21,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:21,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1143067429, now seen corresponding path program 389 times [2021-05-21 20:36:21,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:21,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908732771] [2021-05-21 20:36:21,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:21,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:21,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908732771] [2021-05-21 20:36:21,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908732771] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:21,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:21,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:21,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247274084] [2021-05-21 20:36:21,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:21,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:21,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:21,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:21,421 INFO L87 Difference]: Start difference. First operand 13251 states and 70545 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:21,630 INFO L93 Difference]: Finished difference Result 30099 states and 151539 transitions. [2021-05-21 20:36:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:21,631 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 [2021-05-21 20:36:21,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:21,717 INFO L225 Difference]: With dead ends: 30099 [2021-05-21 20:36:21,717 INFO L226 Difference]: Without dead ends: 29348 [2021-05-21 20:36:21,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29348 states. [2021-05-21 20:36:22,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29348 to 13363. [2021-05-21 20:36:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.314249363867685) internal successors, (71009), 13362 states have internal predecessors, (71009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71009 transitions. [2021-05-21 20:36:22,864 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71009 transitions. Word has length 33 [2021-05-21 20:36:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:22,864 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71009 transitions. [2021-05-21 20:36:22,864 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) [2021-05-21 20:36:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71009 transitions. [2021-05-21 20:36:22,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:22,891 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:22,891 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:22,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-05-21 20:36:22,891 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:22,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1623969475, now seen corresponding path program 390 times [2021-05-21 20:36:22,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:22,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923045913] [2021-05-21 20:36:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:23,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:23,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923045913] [2021-05-21 20:36:23,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923045913] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:23,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:23,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:23,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410437209] [2021-05-21 20:36:23,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:23,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:23,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:23,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:23,022 INFO L87 Difference]: Start difference. First operand 13363 states and 71009 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:23,238 INFO L93 Difference]: Finished difference Result 30083 states and 151363 transitions. [2021-05-21 20:36:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:23,238 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 [2021-05-21 20:36:23,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:23,332 INFO L225 Difference]: With dead ends: 30083 [2021-05-21 20:36:23,332 INFO L226 Difference]: Without dead ends: 29180 [2021-05-21 20:36:23,332 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 154.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:24,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29180 states. [2021-05-21 20:36:24,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29180 to 13195. [2021-05-21 20:36:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13195 states, 13194 states have (on average 5.329164771866) internal successors, (70313), 13194 states have internal predecessors, (70313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 70313 transitions. [2021-05-21 20:36:24,505 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 70313 transitions. Word has length 33 [2021-05-21 20:36:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:24,506 INFO L482 AbstractCegarLoop]: Abstraction has 13195 states and 70313 transitions. [2021-05-21 20:36:24,506 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) [2021-05-21 20:36:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 70313 transitions. [2021-05-21 20:36:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:24,532 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:24,532 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:24,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-05-21 20:36:24,532 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:24,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:24,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1033789117, now seen corresponding path program 391 times [2021-05-21 20:36:24,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:24,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644575197] [2021-05-21 20:36:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:24,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:24,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644575197] [2021-05-21 20:36:24,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644575197] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:24,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:24,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:24,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688604925] [2021-05-21 20:36:24,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:24,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:24,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:24,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:24,662 INFO L87 Difference]: Start difference. First operand 13195 states and 70313 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:25,024 INFO L93 Difference]: Finished difference Result 30191 states and 151991 transitions. [2021-05-21 20:36:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:25,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:25,119 INFO L225 Difference]: With dead ends: 30191 [2021-05-21 20:36:25,119 INFO L226 Difference]: Without dead ends: 29432 [2021-05-21 20:36:25,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 155.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29432 states. [2021-05-21 20:36:26,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29432 to 13375. [2021-05-21 20:36:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13375 states, 13374 states have (on average 5.319350979512487) internal successors, (71141), 13374 states have internal predecessors, (71141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13375 states to 13375 states and 71141 transitions. [2021-05-21 20:36:26,190 INFO L78 Accepts]: Start accepts. Automaton has 13375 states and 71141 transitions. Word has length 33 [2021-05-21 20:36:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:26,191 INFO L482 AbstractCegarLoop]: Abstraction has 13375 states and 71141 transitions. [2021-05-21 20:36:26,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 13375 states and 71141 transitions. [2021-05-21 20:36:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:26,217 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:26,217 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:26,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-05-21 20:36:26,218 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:26,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:26,218 INFO L82 PathProgramCache]: Analyzing trace with hash 186992155, now seen corresponding path program 392 times [2021-05-21 20:36:26,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:26,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171223558] [2021-05-21 20:36:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:26,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:26,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171223558] [2021-05-21 20:36:26,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171223558] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:26,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:26,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:26,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050486383] [2021-05-21 20:36:26,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:26,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:26,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:26,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:26,344 INFO L87 Difference]: Start difference. First operand 13375 states and 71141 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:26,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:26,632 INFO L93 Difference]: Finished difference Result 30183 states and 151843 transitions. [2021-05-21 20:36:26,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:26,632 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 [2021-05-21 20:36:26,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:26,717 INFO L225 Difference]: With dead ends: 30183 [2021-05-21 20:36:26,717 INFO L226 Difference]: Without dead ends: 29312 [2021-05-21 20:36:26,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:27,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29312 states. [2021-05-21 20:36:27,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29312 to 13255. [2021-05-21 20:36:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13255 states, 13254 states have (on average 5.325863890146371) internal successors, (70589), 13254 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) [2021-05-21 20:36:27,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13255 states to 13255 states and 70589 transitions. [2021-05-21 20:36:27,767 INFO L78 Accepts]: Start accepts. Automaton has 13255 states and 70589 transitions. Word has length 33 [2021-05-21 20:36:27,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:27,767 INFO L482 AbstractCegarLoop]: Abstraction has 13255 states and 70589 transitions. [2021-05-21 20:36:27,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:27,767 INFO L276 IsEmpty]: Start isEmpty. Operand 13255 states and 70589 transitions. [2021-05-21 20:36:27,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:27,793 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:27,793 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] [2021-05-21 20:36:27,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-05-21 20:36:27,794 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:27,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:27,794 INFO L82 PathProgramCache]: Analyzing trace with hash -2146654531, now seen corresponding path program 393 times [2021-05-21 20:36:27,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:27,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274389836] [2021-05-21 20:36:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:27,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:27,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274389836] [2021-05-21 20:36:27,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274389836] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:27,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:27,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:27,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985810183] [2021-05-21 20:36:27,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:27,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:27,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:27,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:27,924 INFO L87 Difference]: Start difference. First operand 13255 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) [2021-05-21 20:36:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:28,192 INFO L93 Difference]: Finished difference Result 30207 states and 151987 transitions. [2021-05-21 20:36:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:28,193 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:28,282 INFO L225 Difference]: With dead ends: 30207 [2021-05-21 20:36:28,282 INFO L226 Difference]: Without dead ends: 29448 [2021-05-21 20:36:28,283 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 [2021-05-21 20:36:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29448 states. [2021-05-21 20:36:29,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29448 to 13379. [2021-05-21 20:36:29,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 5.314172522051129) internal successors, (71093), 13378 states have internal predecessors, (71093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 71093 transitions. [2021-05-21 20:36:29,325 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 71093 transitions. Word has length 33 [2021-05-21 20:36:29,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:29,325 INFO L482 AbstractCegarLoop]: Abstraction has 13379 states and 71093 transitions. [2021-05-21 20:36:29,325 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) [2021-05-21 20:36:29,325 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 71093 transitions. [2021-05-21 20:36:29,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:29,440 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:29,440 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:29,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-05-21 20:36:29,440 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:29,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:29,440 INFO L82 PathProgramCache]: Analyzing trace with hash 611712701, now seen corresponding path program 394 times [2021-05-21 20:36:29,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:29,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337646527] [2021-05-21 20:36:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:29,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:29,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337646527] [2021-05-21 20:36:29,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337646527] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:29,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:29,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:29,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172604121] [2021-05-21 20:36:29,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:29,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:29,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:29,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:29,573 INFO L87 Difference]: Start difference. First operand 13379 states and 71093 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:29,785 INFO L93 Difference]: Finished difference Result 30211 states and 151875 transitions. [2021-05-21 20:36:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:29,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:29,878 INFO L225 Difference]: With dead ends: 30211 [2021-05-21 20:36:29,878 INFO L226 Difference]: Without dead ends: 29324 [2021-05-21 20:36:29,878 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29324 states. [2021-05-21 20:36:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29324 to 13255. [2021-05-21 20:36:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13255 states, 13254 states have (on average 5.321336954881545) internal successors, (70529), 13254 states have internal predecessors, (70529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13255 states to 13255 states and 70529 transitions. [2021-05-21 20:36:31,042 INFO L78 Accepts]: Start accepts. Automaton has 13255 states and 70529 transitions. Word has length 33 [2021-05-21 20:36:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:31,042 INFO L482 AbstractCegarLoop]: Abstraction has 13255 states and 70529 transitions. [2021-05-21 20:36:31,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:31,042 INFO L276 IsEmpty]: Start isEmpty. Operand 13255 states and 70529 transitions. [2021-05-21 20:36:31,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:31,066 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:31,067 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:31,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-05-21 20:36:31,067 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:31,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:31,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1291564699, now seen corresponding path program 395 times [2021-05-21 20:36:31,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:31,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415294258] [2021-05-21 20:36:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:31,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:31,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415294258] [2021-05-21 20:36:31,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415294258] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:31,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:31,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:31,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59824008] [2021-05-21 20:36:31,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:31,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:31,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:31,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:31,192 INFO L87 Difference]: Start difference. First operand 13255 states and 70529 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:31,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:31,392 INFO L93 Difference]: Finished difference Result 30187 states and 151855 transitions. [2021-05-21 20:36:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:31,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:31,482 INFO L225 Difference]: With dead ends: 30187 [2021-05-21 20:36:31,482 INFO L226 Difference]: Without dead ends: 29436 [2021-05-21 20:36:31,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 148.9ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:32,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29436 states. [2021-05-21 20:36:32,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29436 to 13375. [2021-05-21 20:36:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13375 states, 13374 states have (on average 5.310378346044564) internal successors, (71021), 13374 states have internal predecessors, (71021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13375 states to 13375 states and 71021 transitions. [2021-05-21 20:36:32,619 INFO L78 Accepts]: Start accepts. Automaton has 13375 states and 71021 transitions. Word has length 33 [2021-05-21 20:36:32,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:32,619 INFO L482 AbstractCegarLoop]: Abstraction has 13375 states and 71021 transitions. [2021-05-21 20:36:32,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 13375 states and 71021 transitions. [2021-05-21 20:36:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:32,644 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:32,644 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:32,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-05-21 20:36:32,644 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:32,644 INFO L82 PathProgramCache]: Analyzing trace with hash -712073987, now seen corresponding path program 396 times [2021-05-21 20:36:32,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:32,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840019544] [2021-05-21 20:36:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:32,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:32,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840019544] [2021-05-21 20:36:32,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840019544] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:32,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:32,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:32,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649213644] [2021-05-21 20:36:32,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:32,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:32,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:32,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:32,771 INFO L87 Difference]: Start difference. First operand 13375 states and 71021 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:32,985 INFO L93 Difference]: Finished difference Result 30199 states and 151775 transitions. [2021-05-21 20:36:32,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:32,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:32,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:33,073 INFO L225 Difference]: With dead ends: 30199 [2021-05-21 20:36:33,074 INFO L226 Difference]: Without dead ends: 29256 [2021-05-21 20:36:33,074 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:33,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29256 states. [2021-05-21 20:36:34,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29256 to 13195. [2021-05-21 20:36:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13195 states, 13194 states have (on average 5.327042595118994) internal successors, (70285), 13194 states have internal predecessors, (70285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 70285 transitions. [2021-05-21 20:36:34,243 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 70285 transitions. Word has length 33 [2021-05-21 20:36:34,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:34,244 INFO L482 AbstractCegarLoop]: Abstraction has 13195 states and 70285 transitions. [2021-05-21 20:36:34,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 70285 transitions. [2021-05-21 20:36:34,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:34,269 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:34,269 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:34,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-05-21 20:36:34,269 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:34,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:34,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1962348773, now seen corresponding path program 397 times [2021-05-21 20:36:34,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:34,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692935485] [2021-05-21 20:36:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:34,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:34,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692935485] [2021-05-21 20:36:34,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692935485] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:34,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:34,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:34,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552130622] [2021-05-21 20:36:34,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:34,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:34,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:34,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:34,406 INFO L87 Difference]: Start difference. First operand 13195 states and 70285 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:34,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:34,622 INFO L93 Difference]: Finished difference Result 30131 states and 151707 transitions. [2021-05-21 20:36:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:34,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:34,714 INFO L225 Difference]: With dead ends: 30131 [2021-05-21 20:36:34,714 INFO L226 Difference]: Without dead ends: 29372 [2021-05-21 20:36:34,715 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 [2021-05-21 20:36:35,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29372 states. [2021-05-21 20:36:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29372 to 13363. [2021-05-21 20:36:35,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.318440353240533) internal successors, (71065), 13362 states have internal predecessors, (71065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71065 transitions. [2021-05-21 20:36:35,882 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71065 transitions. Word has length 33 [2021-05-21 20:36:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:35,883 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71065 transitions. [2021-05-21 20:36:35,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:35,883 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71065 transitions. [2021-05-21 20:36:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:35,909 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:35,909 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:35,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-05-21 20:36:35,909 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:35,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1536591643, now seen corresponding path program 398 times [2021-05-21 20:36:35,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:35,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527929241] [2021-05-21 20:36:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:36,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:36,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527929241] [2021-05-21 20:36:36,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527929241] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:36,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:36,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:36,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748951172] [2021-05-21 20:36:36,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:36,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:36,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:36,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:36,034 INFO L87 Difference]: Start difference. First operand 13363 states and 71065 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:36,270 INFO L93 Difference]: Finished difference Result 30107 states and 151503 transitions. [2021-05-21 20:36:36,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:36,270 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 [2021-05-21 20:36:36,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:36,359 INFO L225 Difference]: With dead ends: 30107 [2021-05-21 20:36:36,359 INFO L226 Difference]: Without dead ends: 29260 [2021-05-21 20:36:36,359 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 [2021-05-21 20:36:37,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29260 states. [2021-05-21 20:36:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29260 to 13251. [2021-05-21 20:36:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 5.324150943396226) internal successors, (70545), 13250 states have internal predecessors, (70545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70545 transitions. [2021-05-21 20:36:37,548 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70545 transitions. Word has length 33 [2021-05-21 20:36:37,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:37,548 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70545 transitions. [2021-05-21 20:36:37,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70545 transitions. [2021-05-21 20:36:37,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:37,573 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:37,573 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] [2021-05-21 20:36:37,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-05-21 20:36:37,573 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:37,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:37,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1289674109, now seen corresponding path program 399 times [2021-05-21 20:36:37,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:37,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115074978] [2021-05-21 20:36:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:37,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:37,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115074978] [2021-05-21 20:36:37,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115074978] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:37,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:37,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:37,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923634647] [2021-05-21 20:36:37,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:37,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:37,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:37,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:37,711 INFO L87 Difference]: Start difference. First operand 13251 states and 70545 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:37,928 INFO L93 Difference]: Finished difference Result 30171 states and 151807 transitions. [2021-05-21 20:36:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:37,928 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 [2021-05-21 20:36:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:38,197 INFO L225 Difference]: With dead ends: 30171 [2021-05-21 20:36:38,197 INFO L226 Difference]: Without dead ends: 29412 [2021-05-21 20:36:38,197 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:38,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29412 states. [2021-05-21 20:36:39,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29412 to 13375. [2021-05-21 20:36:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13375 states, 13374 states have (on average 5.312471960520413) internal successors, (71049), 13374 states have internal predecessors, (71049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13375 states to 13375 states and 71049 transitions. [2021-05-21 20:36:39,224 INFO L78 Accepts]: Start accepts. Automaton has 13375 states and 71049 transitions. Word has length 33 [2021-05-21 20:36:39,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:39,224 INFO L482 AbstractCegarLoop]: Abstraction has 13375 states and 71049 transitions. [2021-05-21 20:36:39,224 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) [2021-05-21 20:36:39,225 INFO L276 IsEmpty]: Start isEmpty. Operand 13375 states and 71049 transitions. [2021-05-21 20:36:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:39,250 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:39,250 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] [2021-05-21 20:36:39,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-05-21 20:36:39,250 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:39,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:39,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2069759771, now seen corresponding path program 400 times [2021-05-21 20:36:39,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:39,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378736268] [2021-05-21 20:36:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:39,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:39,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378736268] [2021-05-21 20:36:39,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378736268] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:39,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:39,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:39,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727178163] [2021-05-21 20:36:39,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:39,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:39,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:39,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:39,376 INFO L87 Difference]: Start difference. First operand 13375 states and 71049 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:39,722 INFO L93 Difference]: Finished difference Result 30175 states and 151695 transitions. [2021-05-21 20:36:39,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:39,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:39,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:39,810 INFO L225 Difference]: With dead ends: 30175 [2021-05-21 20:36:39,810 INFO L226 Difference]: Without dead ends: 29288 [2021-05-21 20:36:39,810 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:40,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29288 states. [2021-05-21 20:36:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29288 to 13251. [2021-05-21 20:36:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 5.319924528301887) internal successors, (70489), 13250 states have internal predecessors, (70489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70489 transitions. [2021-05-21 20:36:40,838 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70489 transitions. Word has length 33 [2021-05-21 20:36:40,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:40,839 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70489 transitions. [2021-05-21 20:36:40,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:40,839 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70489 transitions. [2021-05-21 20:36:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:40,864 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:40,864 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] [2021-05-21 20:36:40,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-05-21 20:36:40,864 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:40,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:40,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1962287333, now seen corresponding path program 401 times [2021-05-21 20:36:40,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:40,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547550871] [2021-05-21 20:36:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:41,010 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-05-21 20:36:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:41,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:41,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547550871] [2021-05-21 20:36:41,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547550871] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:41,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:41,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:41,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210699218] [2021-05-21 20:36:41,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:41,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:41,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:41,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:41,110 INFO L87 Difference]: Start difference. First operand 13251 states and 70489 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:41,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:41,316 INFO L93 Difference]: Finished difference Result 30111 states and 151515 transitions. [2021-05-21 20:36:41,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:41,316 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:41,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:41,405 INFO L225 Difference]: With dead ends: 30111 [2021-05-21 20:36:41,405 INFO L226 Difference]: Without dead ends: 29376 [2021-05-21 20:36:41,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 270.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29376 states. [2021-05-21 20:36:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29376 to 13363. [2021-05-21 20:36:42,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.310058374494836) internal successors, (70953), 13362 states have internal predecessors, (70953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 70953 transitions. [2021-05-21 20:36:42,599 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 70953 transitions. Word has length 33 [2021-05-21 20:36:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:42,600 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 70953 transitions. [2021-05-21 20:36:42,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 70953 transitions. [2021-05-21 20:36:42,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:42,625 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:42,625 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:42,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-05-21 20:36:42,625 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:42,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:42,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1022098941, now seen corresponding path program 402 times [2021-05-21 20:36:42,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:42,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551212270] [2021-05-21 20:36:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:42,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:42,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551212270] [2021-05-21 20:36:42,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551212270] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:42,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:42,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:42,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782077957] [2021-05-21 20:36:42,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:42,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:42,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:42,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:42,764 INFO L87 Difference]: Start difference. First operand 13363 states and 70953 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:43,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:43,125 INFO L93 Difference]: Finished difference Result 30139 states and 151507 transitions. [2021-05-21 20:36:43,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:43,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:43,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:43,217 INFO L225 Difference]: With dead ends: 30139 [2021-05-21 20:36:43,218 INFO L226 Difference]: Without dead ends: 29208 [2021-05-21 20:36:43,218 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 [2021-05-21 20:36:43,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29208 states. [2021-05-21 20:36:44,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29208 to 13195. [2021-05-21 20:36:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13195 states, 13194 states have (on average 5.324920418371987) internal successors, (70257), 13194 states have internal predecessors, (70257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 70257 transitions. [2021-05-21 20:36:44,392 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 70257 transitions. Word has length 33 [2021-05-21 20:36:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:44,392 INFO L482 AbstractCegarLoop]: Abstraction has 13195 states and 70257 transitions. [2021-05-21 20:36:44,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 70257 transitions. [2021-05-21 20:36:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:44,419 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:44,419 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:44,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-05-21 20:36:44,419 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:44,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:44,420 INFO L82 PathProgramCache]: Analyzing trace with hash 502794105, now seen corresponding path program 403 times [2021-05-21 20:36:44,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:44,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488254031] [2021-05-21 20:36:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:44,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:44,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488254031] [2021-05-21 20:36:44,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488254031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:44,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:44,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:44,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812174067] [2021-05-21 20:36:44,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:44,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:44,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:44,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:44,547 INFO L87 Difference]: Start difference. First operand 13195 states and 70257 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:44,767 INFO L93 Difference]: Finished difference Result 30103 states and 151579 transitions. [2021-05-21 20:36:44,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:44,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:44,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:44,856 INFO L225 Difference]: With dead ends: 30103 [2021-05-21 20:36:44,857 INFO L226 Difference]: Without dead ends: 29352 [2021-05-21 20:36:44,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 154.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:45,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29352 states. [2021-05-21 20:36:45,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29352 to 13363. [2021-05-21 20:36:46,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.316344858554109) internal successors, (71037), 13362 states have internal predecessors, (71037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 71037 transitions. [2021-05-21 20:36:46,049 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 71037 transitions. Word has length 33 [2021-05-21 20:36:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:46,049 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 71037 transitions. [2021-05-21 20:36:46,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:46,049 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 71037 transitions. [2021-05-21 20:36:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:46,077 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:46,077 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:46,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-05-21 20:36:46,077 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:46,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:46,078 INFO L82 PathProgramCache]: Analyzing trace with hash 21892059, now seen corresponding path program 404 times [2021-05-21 20:36:46,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:46,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809219572] [2021-05-21 20:36:46,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:46,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:46,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809219572] [2021-05-21 20:36:46,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809219572] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:46,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:46,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:46,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470067628] [2021-05-21 20:36:46,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:46,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:46,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:46,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:46,205 INFO L87 Difference]: Start difference. First operand 13363 states and 71037 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:46,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:46,419 INFO L93 Difference]: Finished difference Result 30087 states and 151403 transitions. [2021-05-21 20:36:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:46,419 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:46,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:46,507 INFO L225 Difference]: With dead ends: 30087 [2021-05-21 20:36:46,507 INFO L226 Difference]: Without dead ends: 29240 [2021-05-21 20:36:46,507 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.0ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29240 states. [2021-05-21 20:36:47,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29240 to 13251. [2021-05-21 20:36:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 5.322037735849056) internal successors, (70517), 13250 states have internal predecessors, (70517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70517 transitions. [2021-05-21 20:36:47,658 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70517 transitions. Word has length 33 [2021-05-21 20:36:47,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:47,658 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70517 transitions. [2021-05-21 20:36:47,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:47,658 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70517 transitions. [2021-05-21 20:36:47,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:47,683 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:47,683 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:47,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-05-21 20:36:47,683 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:47,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:47,684 INFO L82 PathProgramCache]: Analyzing trace with hash -540150309, now seen corresponding path program 405 times [2021-05-21 20:36:47,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:47,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335567464] [2021-05-21 20:36:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:47,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:47,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335567464] [2021-05-21 20:36:47,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335567464] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:47,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:47,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:47,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764322059] [2021-05-21 20:36:47,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:47,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:47,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:47,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:47,808 INFO L87 Difference]: Start difference. First operand 13251 states and 70517 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:48,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:48,020 INFO L93 Difference]: Finished difference Result 30139 states and 151663 transitions. [2021-05-21 20:36:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:48,020 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:48,109 INFO L225 Difference]: With dead ends: 30139 [2021-05-21 20:36:48,110 INFO L226 Difference]: Without dead ends: 29388 [2021-05-21 20:36:48,110 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 [2021-05-21 20:36:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29388 states. [2021-05-21 20:36:49,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29388 to 13371. [2021-05-21 20:36:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 13370 states have (on average 5.3110695587135375) internal successors, (71009), 13370 states have internal predecessors, (71009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 71009 transitions. [2021-05-21 20:36:49,279 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 71009 transitions. Word has length 33 [2021-05-21 20:36:49,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:49,279 INFO L482 AbstractCegarLoop]: Abstraction has 13371 states and 71009 transitions. [2021-05-21 20:36:49,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:49,279 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 71009 transitions. [2021-05-21 20:36:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:49,304 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:49,304 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:49,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-05-21 20:36:49,304 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:49,304 INFO L82 PathProgramCache]: Analyzing trace with hash -227103269, now seen corresponding path program 406 times [2021-05-21 20:36:49,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:49,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236131708] [2021-05-21 20:36:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:49,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:49,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236131708] [2021-05-21 20:36:49,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236131708] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:49,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:49,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:49,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146845215] [2021-05-21 20:36:49,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:49,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:49,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:49,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:49,430 INFO L87 Difference]: Start difference. First operand 13371 states and 71009 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:49,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:49,644 INFO L93 Difference]: Finished difference Result 30151 states and 151583 transitions. [2021-05-21 20:36:49,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:49,645 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 [2021-05-21 20:36:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:49,733 INFO L225 Difference]: With dead ends: 30151 [2021-05-21 20:36:49,734 INFO L226 Difference]: Without dead ends: 29268 [2021-05-21 20:36:49,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:50,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29268 states. [2021-05-21 20:36:50,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29268 to 13251. [2021-05-21 20:36:50,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 5.317811320754717) internal successors, (70461), 13250 states have internal predecessors, (70461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 70461 transitions. [2021-05-21 20:36:50,894 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 70461 transitions. Word has length 33 [2021-05-21 20:36:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:50,894 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 70461 transitions. [2021-05-21 20:36:50,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 70461 transitions. [2021-05-21 20:36:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:50,920 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:50,920 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:50,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-05-21 20:36:50,920 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:50,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:50,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1329536579, now seen corresponding path program 407 times [2021-05-21 20:36:50,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:50,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67734205] [2021-05-21 20:36:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:51,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:51,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67734205] [2021-05-21 20:36:51,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67734205] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:51,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:51,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:51,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443389336] [2021-05-21 20:36:51,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:51,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:51,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:51,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:51,061 INFO L87 Difference]: Start difference. First operand 13251 states and 70461 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:51,410 INFO L93 Difference]: Finished difference Result 30099 states and 151443 transitions. [2021-05-21 20:36:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:51,410 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 [2021-05-21 20:36:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:51,502 INFO L225 Difference]: With dead ends: 30099 [2021-05-21 20:36:51,502 INFO L226 Difference]: Without dead ends: 29364 [2021-05-21 20:36:51,503 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 164.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29364 states. [2021-05-21 20:36:52,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29364 to 13363. [2021-05-21 20:36:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13363 states, 13362 states have (on average 5.307962879808412) internal successors, (70925), 13362 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) [2021-05-21 20:36:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 70925 transitions. [2021-05-21 20:36:52,553 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 70925 transitions. Word has length 33 [2021-05-21 20:36:52,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:52,553 INFO L482 AbstractCegarLoop]: Abstraction has 13363 states and 70925 transitions. [2021-05-21 20:36:52,553 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) [2021-05-21 20:36:52,553 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 70925 transitions. [2021-05-21 20:36:52,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:52,579 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:52,579 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:52,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-05-21 20:36:52,579 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:52,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:52,579 INFO L82 PathProgramCache]: Analyzing trace with hash 992124699, now seen corresponding path program 408 times [2021-05-21 20:36:52,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:52,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321399757] [2021-05-21 20:36:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:52,778 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-05-21 20:36:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:52,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:52,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321399757] [2021-05-21 20:36:52,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321399757] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:52,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:52,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:52,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623565335] [2021-05-21 20:36:52,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:52,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:52,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:52,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:52,830 INFO L87 Difference]: Start difference. First operand 13363 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) [2021-05-21 20:36:53,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:53,037 INFO L93 Difference]: Finished difference Result 30127 states and 151435 transitions. [2021-05-21 20:36:53,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:53,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:36:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:53,123 INFO L225 Difference]: With dead ends: 30127 [2021-05-21 20:36:53,123 INFO L226 Difference]: Without dead ends: 29168 [2021-05-21 20:36:53,123 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 275.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:53,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29168 states. [2021-05-21 20:36:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29168 to 13167. [2021-05-21 20:36:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13167 states, 13166 states have (on average 5.328497645450403) internal successors, (70155), 13166 states have internal predecessors, (70155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13167 states to 13167 states and 70155 transitions. [2021-05-21 20:36:54,324 INFO L78 Accepts]: Start accepts. Automaton has 13167 states and 70155 transitions. Word has length 33 [2021-05-21 20:36:54,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:54,324 INFO L482 AbstractCegarLoop]: Abstraction has 13167 states and 70155 transitions. [2021-05-21 20:36:54,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 13167 states and 70155 transitions. [2021-05-21 20:36:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:54,350 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:54,350 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:54,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-05-21 20:36:54,351 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:54,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:54,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1195799747, now seen corresponding path program 409 times [2021-05-21 20:36:54,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:54,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968614567] [2021-05-21 20:36:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:54,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:54,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968614567] [2021-05-21 20:36:54,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968614567] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:54,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:54,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:54,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588417025] [2021-05-21 20:36:54,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:54,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:54,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:54,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:54,479 INFO L87 Difference]: Start difference. First operand 13167 states and 70155 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:54,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:54,694 INFO L93 Difference]: Finished difference Result 30273 states and 152346 transitions. [2021-05-21 20:36:54,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:54,695 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 [2021-05-21 20:36:54,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:54,789 INFO L225 Difference]: With dead ends: 30273 [2021-05-21 20:36:54,789 INFO L226 Difference]: Without dead ends: 29514 [2021-05-21 20:36:54,789 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.6ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29514 states. [2021-05-21 20:36:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29514 to 13377. [2021-05-21 20:36:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13377 states, 13376 states have (on average 5.320424641148326) internal successors, (71166), 13376 states have internal predecessors, (71166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13377 states to 13377 states and 71166 transitions. [2021-05-21 20:36:55,951 INFO L78 Accepts]: Start accepts. Automaton has 13377 states and 71166 transitions. Word has length 33 [2021-05-21 20:36:55,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:55,951 INFO L482 AbstractCegarLoop]: Abstraction has 13377 states and 71166 transitions. [2021-05-21 20:36:55,951 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) [2021-05-21 20:36:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 13377 states and 71166 transitions. [2021-05-21 20:36:55,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:55,978 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:55,978 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:55,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-05-21 20:36:55,978 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:55,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:55,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2042596709, now seen corresponding path program 410 times [2021-05-21 20:36:55,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:55,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001789854] [2021-05-21 20:36:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:56,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:56,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001789854] [2021-05-21 20:36:56,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001789854] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:56,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:56,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:56,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972466976] [2021-05-21 20:36:56,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:56,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:56,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:56,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:56,109 INFO L87 Difference]: Start difference. First operand 13377 states and 71166 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:56,325 INFO L93 Difference]: Finished difference Result 30265 states and 152198 transitions. [2021-05-21 20:36:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:56,326 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 [2021-05-21 20:36:56,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:56,417 INFO L225 Difference]: With dead ends: 30265 [2021-05-21 20:36:56,417 INFO L226 Difference]: Without dead ends: 29394 [2021-05-21 20:36:56,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 155.5ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29394 states. [2021-05-21 20:36:57,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29394 to 13257. [2021-05-21 20:36:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13257 states, 13256 states have (on average 5.326946288473144) internal successors, (70614), 13256 states have internal predecessors, (70614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:57,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13257 states to 13257 states and 70614 transitions. [2021-05-21 20:36:57,586 INFO L78 Accepts]: Start accepts. Automaton has 13257 states and 70614 transitions. Word has length 33 [2021-05-21 20:36:57,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:57,586 INFO L482 AbstractCegarLoop]: Abstraction has 13257 states and 70614 transitions. [2021-05-21 20:36:57,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:57,586 INFO L276 IsEmpty]: Start isEmpty. Operand 13257 states and 70614 transitions. [2021-05-21 20:36:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:57,614 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:57,614 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:57,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-05-21 20:36:57,614 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:57,614 INFO L82 PathProgramCache]: Analyzing trace with hash 237159229, now seen corresponding path program 411 times [2021-05-21 20:36:57,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:57,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522112487] [2021-05-21 20:36:57,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:57,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:57,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522112487] [2021-05-21 20:36:57,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522112487] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:57,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:57,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:57,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264612902] [2021-05-21 20:36:57,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:57,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:57,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:57,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:57,741 INFO L87 Difference]: Start difference. First operand 13257 states and 70614 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:57,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:57,952 INFO L93 Difference]: Finished difference Result 30291 states and 152347 transitions. [2021-05-21 20:36:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:57,952 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 [2021-05-21 20:36:57,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:58,046 INFO L225 Difference]: With dead ends: 30291 [2021-05-21 20:36:58,046 INFO L226 Difference]: Without dead ends: 29532 [2021-05-21 20:36:58,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:36:58,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29532 states. [2021-05-21 20:36:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29532 to 13381. [2021-05-21 20:36:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13381 states, 13380 states have (on average 5.315246636771301) internal successors, (71118), 13380 states have internal predecessors, (71118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:59,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13381 states to 13381 states and 71118 transitions. [2021-05-21 20:36:59,195 INFO L78 Accepts]: Start accepts. Automaton has 13381 states and 71118 transitions. Word has length 33 [2021-05-21 20:36:59,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:36:59,195 INFO L482 AbstractCegarLoop]: Abstraction has 13381 states and 71118 transitions. [2021-05-21 20:36:59,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand 13381 states and 71118 transitions. [2021-05-21 20:36:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:36:59,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:36:59,221 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:36:59,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-05-21 20:36:59,221 INFO L430 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:36:59,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:36:59,221 INFO L82 PathProgramCache]: Analyzing trace with hash 662899517, now seen corresponding path program 412 times [2021-05-21 20:36:59,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:36:59,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621373294] [2021-05-21 20:36:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:36:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:36:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:36:59,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:36:59,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621373294] [2021-05-21 20:36:59,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621373294] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:36:59,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:36:59,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:36:59,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545203234] [2021-05-21 20:36:59,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:36:59,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:36:59,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:36:59,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:36:59,347 INFO L87 Difference]: Start difference. First operand 13381 states and 71118 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:36:59,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:36:59,557 INFO L93 Difference]: Finished difference Result 30297 states and 152240 transitions. [2021-05-21 20:36:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:36:59,557 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 [2021-05-21 20:36:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:36:59,645 INFO L225 Difference]: With dead ends: 30297 [2021-05-21 20:36:59,645 INFO L226 Difference]: Without dead ends: 29408 [2021-05-21 20:36:59,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 150.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:37:00,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29408 states. [2021-05-21 20:37:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29408 to 13257. [2021-05-21 20:37:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13257 states, 13256 states have (on average 5.322420036210018) internal successors, (70554), 13256 states have internal predecessors, (70554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13257 states to 13257 states and 70554 transitions. [2021-05-21 20:37:00,829 INFO L78 Accepts]: Start accepts. Automaton has 13257 states and 70554 transitions. Word has length 33 [2021-05-21 20:37:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:37:00,829 INFO L482 AbstractCegarLoop]: Abstraction has 13257 states and 70554 transitions. [2021-05-21 20:37:00,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13257 states and 70554 transitions. [2021-05-21 20:37:00,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:37:00,856 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:37:00,856 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:37:00,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2021-05-21 20:37:00,857 INFO L430 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:37:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:37:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash -619588837, now seen corresponding path program 413 times [2021-05-21 20:37:00,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:37:00,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959720037] [2021-05-21 20:37:00,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:37:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:37:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:37:00,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:37:00,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959720037] [2021-05-21 20:37:00,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959720037] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:37:00,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:37:00,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:37:00,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931807327] [2021-05-21 20:37:00,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:37:00,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:37:00,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:37:00,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:37:00,998 INFO L87 Difference]: Start difference. First operand 13257 states and 70554 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:37:01,210 INFO L93 Difference]: Finished difference Result 30271 states and 152215 transitions. [2021-05-21 20:37:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:37:01,210 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 [2021-05-21 20:37:01,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:37:01,303 INFO L225 Difference]: With dead ends: 30271 [2021-05-21 20:37:01,303 INFO L226 Difference]: Without dead ends: 29520 [2021-05-21 20:37:01,303 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 [2021-05-21 20:37:02,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29520 states. [2021-05-21 20:37:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29520 to 13377. [2021-05-21 20:37:02,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13377 states, 13376 states have (on average 5.311453349282297) internal successors, (71046), 13376 states have internal predecessors, (71046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13377 states to 13377 states and 71046 transitions. [2021-05-21 20:37:02,462 INFO L78 Accepts]: Start accepts. Automaton has 13377 states and 71046 transitions. Word has length 33 [2021-05-21 20:37:02,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:37:02,462 INFO L482 AbstractCegarLoop]: Abstraction has 13377 states and 71046 transitions. [2021-05-21 20:37:02,462 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) [2021-05-21 20:37:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand 13377 states and 71046 transitions. [2021-05-21 20:37:02,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:37:02,488 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:37:02,488 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:37:02,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2021-05-21 20:37:02,488 INFO L430 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:37:02,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:37:02,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1930169859, now seen corresponding path program 414 times [2021-05-21 20:37:02,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:37:02,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268232015] [2021-05-21 20:37:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:37:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:37:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:37:02,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:37:02,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268232015] [2021-05-21 20:37:02,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268232015] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:37:02,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:37:02,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:37:02,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424031081] [2021-05-21 20:37:02,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:37:02,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:37:02,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:37:02,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:37:02,666 INFO L87 Difference]: Start difference. First operand 13377 states and 71046 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:03,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:37:03,004 INFO L93 Difference]: Finished difference Result 30285 states and 152140 transitions. [2021-05-21 20:37:03,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:37:03,004 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 [2021-05-21 20:37:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:37:03,101 INFO L225 Difference]: With dead ends: 30285 [2021-05-21 20:37:03,102 INFO L226 Difference]: Without dead ends: 29340 [2021-05-21 20:37:03,102 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 201.3ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:37:03,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29340 states. [2021-05-21 20:37:04,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29340 to 13197. [2021-05-21 20:37:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13197 states, 13196 states have (on average 5.327978175204607) internal successors, (70308), 13196 states have internal predecessors, (70308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13197 states to 13197 states and 70308 transitions. [2021-05-21 20:37:04,165 INFO L78 Accepts]: Start accepts. Automaton has 13197 states and 70308 transitions. Word has length 33 [2021-05-21 20:37:04,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:37:04,165 INFO L482 AbstractCegarLoop]: Abstraction has 13197 states and 70308 transitions. [2021-05-21 20:37:04,166 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) [2021-05-21 20:37:04,166 INFO L276 IsEmpty]: Start isEmpty. Operand 13197 states and 70308 transitions. [2021-05-21 20:37:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:37:04,193 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:37:04,193 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:37:04,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2021-05-21 20:37:04,193 INFO L430 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:37:04,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:37:04,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1053986463, now seen corresponding path program 415 times [2021-05-21 20:37:04,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:37:04,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680877334] [2021-05-21 20:37:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:37:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:37:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:37:04,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:37:04,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680877334] [2021-05-21 20:37:04,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680877334] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:37:04,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:37:04,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:37:04,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695761150] [2021-05-21 20:37:04,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:37:04,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:37:04,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:37:04,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:37:04,328 INFO L87 Difference]: Start difference. First operand 13197 states and 70308 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:04,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:37:04,624 INFO L93 Difference]: Finished difference Result 30271 states and 152311 transitions. [2021-05-21 20:37:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:37:04,624 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 [2021-05-21 20:37:04,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:37:04,715 INFO L225 Difference]: With dead ends: 30271 [2021-05-21 20:37:04,715 INFO L226 Difference]: Without dead ends: 29512 [2021-05-21 20:37:04,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 159.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:37:05,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29512 states. [2021-05-21 20:37:05,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29512 to 13377. [2021-05-21 20:37:05,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13377 states, 13376 states have (on average 5.318181818181818) internal successors, (71136), 13376 states have internal predecessors, (71136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13377 states to 13377 states and 71136 transitions. [2021-05-21 20:37:05,963 INFO L78 Accepts]: Start accepts. Automaton has 13377 states and 71136 transitions. Word has length 33 [2021-05-21 20:37:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:37:05,963 INFO L482 AbstractCegarLoop]: Abstraction has 13377 states and 71136 transitions. [2021-05-21 20:37:05,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 13377 states and 71136 transitions. [2021-05-21 20:37:05,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:37:05,992 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:37:05,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:37:05,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2021-05-21 20:37:05,992 INFO L430 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:37:05,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:37:05,993 INFO L82 PathProgramCache]: Analyzing trace with hash 207189501, now seen corresponding path program 416 times [2021-05-21 20:37:05,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:37:05,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411200906] [2021-05-21 20:37:05,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:37:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:37:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:37:06,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:37:06,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411200906] [2021-05-21 20:37:06,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411200906] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:37:06,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:37:06,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:37:06,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957858194] [2021-05-21 20:37:06,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:37:06,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:37:06,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:37:06,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:37:06,122 INFO L87 Difference]: Start difference. First operand 13377 states and 71136 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:06,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:37:06,370 INFO L93 Difference]: Finished difference Result 30263 states and 152163 transitions. [2021-05-21 20:37:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:37:06,370 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:37:06,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:37:06,465 INFO L225 Difference]: With dead ends: 30263 [2021-05-21 20:37:06,465 INFO L226 Difference]: Without dead ends: 29392 [2021-05-21 20:37:06,466 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:37:07,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29392 states. [2021-05-21 20:37:07,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29392 to 13257. [2021-05-21 20:37:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13257 states, 13256 states have (on average 5.324683162341581) internal successors, (70584), 13256 states have internal predecessors, (70584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13257 states to 13257 states and 70584 transitions. [2021-05-21 20:37:07,676 INFO L78 Accepts]: Start accepts. Automaton has 13257 states and 70584 transitions. Word has length 33 [2021-05-21 20:37:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:37:07,676 INFO L482 AbstractCegarLoop]: Abstraction has 13257 states and 70584 transitions. [2021-05-21 20:37:07,676 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) [2021-05-21 20:37:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 13257 states and 70584 transitions. [2021-05-21 20:37:07,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:37:07,701 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:37:07,701 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:37:07,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2021-05-21 20:37:07,701 INFO L430 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:37:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:37:07,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1154948291, now seen corresponding path program 417 times [2021-05-21 20:37:07,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:37:07,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350111397] [2021-05-21 20:37:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:37:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:37:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:37:07,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:37:07,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350111397] [2021-05-21 20:37:07,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350111397] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:37:07,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:37:07,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:37:07,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993491382] [2021-05-21 20:37:07,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:37:07,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:37:07,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:37:07,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:37:07,828 INFO L87 Difference]: Start difference. First operand 13257 states and 70584 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:37:08,034 INFO L93 Difference]: Finished difference Result 30287 states and 152307 transitions. [2021-05-21 20:37:08,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:37:08,034 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:37:08,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:37:08,119 INFO L225 Difference]: With dead ends: 30287 [2021-05-21 20:37:08,119 INFO L226 Difference]: Without dead ends: 29528 [2021-05-21 20:37:08,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 151.4ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2021-05-21 20:37:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29528 states. [2021-05-21 20:37:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29528 to 13381. [2021-05-21 20:37:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13381 states, 13380 states have (on average 5.313004484304932) internal successors, (71088), 13380 states have internal predecessors, (71088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:09,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13381 states to 13381 states and 71088 transitions. [2021-05-21 20:37:09,268 INFO L78 Accepts]: Start accepts. Automaton has 13381 states and 71088 transitions. Word has length 33 [2021-05-21 20:37:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 20:37:09,268 INFO L482 AbstractCegarLoop]: Abstraction has 13381 states and 71088 transitions. [2021-05-21 20:37:09,268 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) [2021-05-21 20:37:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 13381 states and 71088 transitions. [2021-05-21 20:37:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-21 20:37:09,294 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 20:37:09,294 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 20:37:09,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2021-05-21 20:37:09,294 INFO L430 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-05-21 20:37:09,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 20:37:09,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1603418941, now seen corresponding path program 418 times [2021-05-21 20:37:09,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 20:37:09,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379289116] [2021-05-21 20:37:09,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 20:37:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 20:37:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 20:37:09,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 20:37:09,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379289116] [2021-05-21 20:37:09,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379289116] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 20:37:09,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 20:37:09,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-21 20:37:09,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202744075] [2021-05-21 20:37:09,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-21 20:37:09,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 20:37:09,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-21 20:37:09,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-21 20:37:09,423 INFO L87 Difference]: Start difference. First operand 13381 states and 71088 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 20:37:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 20:37:09,629 INFO L93 Difference]: Finished difference Result 30291 states and 152195 transitions. [2021-05-21 20:37:09,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 20:37:09,629 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-05-21 20:37:09,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 20:37:09,715 INFO L225 Difference]: With dead ends: 30291 [2021-05-21 20:37:09,715 INFO L226 Difference]: Without dead ends: 29404 [2021-05-21 20:37:09,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 Received shutdown request... [2021-05-21 20:37:10,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29404 states. [2021-05-21 20:37:10,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2021-05-21 20:37:10,576 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-21 20:37:10,578 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 20:37:10,579 WARN L196 ceAbstractionStarter]: Timeout [2021-05-21 20:37:10,579 INFO L202 PluginConnector]: Adding new model example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 08:37:10 BasicIcfg [2021-05-21 20:37:10,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 20:37:10,580 INFO L168 Benchmark]: Toolchain (without parser) took 758793.51 ms. Allocated memory was 362.8 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 343.1 MB in the beginning and 6.6 GB in the end (delta: -6.2 GB). Peak memory consumption was 10.1 GB. Max. memory is 16.0 GB. [2021-05-21 20:37:10,580 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 362.8 MB. Free memory was 344.2 MB in the beginning and 344.1 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 20:37:10,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.00 ms. Allocated memory is still 362.8 MB. Free memory was 343.0 MB in the beginning and 341.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 20:37:10,580 INFO L168 Benchmark]: Boogie Preprocessor took 9.67 ms. Allocated memory is still 362.8 MB. Free memory was 341.5 MB in the beginning and 340.6 MB in the end (delta: 916.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 20:37:10,580 INFO L168 Benchmark]: RCFGBuilder took 198.96 ms. Allocated memory is still 362.8 MB. Free memory was 340.5 MB in the beginning and 328.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-05-21 20:37:10,580 INFO L168 Benchmark]: TraceAbstraction took 758560.33 ms. Allocated memory was 362.8 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 328.4 MB in the beginning and 6.6 GB in the end (delta: -6.2 GB). Peak memory consumption was 10.1 GB. Max. memory is 16.0 GB. [2021-05-21 20:37:10,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 362.8 MB. Free memory was 344.2 MB in the beginning and 344.1 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.00 ms. Allocated memory is still 362.8 MB. Free memory was 343.0 MB in the beginning and 341.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.67 ms. Allocated memory is still 362.8 MB. Free memory was 341.5 MB in the beginning and 340.6 MB in the end (delta: 916.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 198.96 ms. Allocated memory is still 362.8 MB. Free memory was 340.5 MB in the beginning and 328.8 MB in the end (delta: 11.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 758560.33 ms. Allocated memory was 362.8 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 328.4 MB in the beginning and 6.6 GB in the end (delta: -6.2 GB). Peak memory consumption was 10.1 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: 758417.7ms, OverallIterations: 425, TraceHistogramMax: 1, EmptinessCheckTime: 14352.4ms, AutomataDifference: 159745.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11812.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 66628 SDtfs, 82778 SDslu, 169754 SDs, 0 SdLazy, 29399 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17425.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4201 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 3769 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2508 ImplicationChecksByTransitivity, 72283.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=68819occurred in iteration=0, InterpolantAutomatonStates: 4201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 507526.8ms AutomataMinimizationTime, 425 MinimizatonAttempts, 7233571 StatesRemovedByMinimization, 417 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 224.6ms SsaConstructionTime, 304.2ms SatisfiabilityAnalysisTime, 63231.3ms InterpolantComputationTime, 14025 NumberOfCodeBlocks, 14025 NumberOfCodeBlocksAsserted, 425 NumberOfCheckSat, 13600 ConstructedInterpolants, 0 QuantifiedInterpolants, 479975 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 425 InterpolantComputations, 425 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown