/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:19:26,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:19:26,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:19:26,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:19:26,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:19:26,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:19:26,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:19:26,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:19:26,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:19:26,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:19:26,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:19:26,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:19:26,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:19:26,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:19:26,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:19:26,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:19:26,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:19:26,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:19:26,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:19:26,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:19:26,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:19:26,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:19:26,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:19:26,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:19:26,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:19:26,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:19:26,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:19:26,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:19:26,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:19:26,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:19:26,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:19:26,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:19:26,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:19:26,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:19:26,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:19:26,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:19:26,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:19:26,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:19:26,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:19:26,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:19:26,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:19:26,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:19:26,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:19:26,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:19:26,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:19:26,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:19:26,824 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:19:26,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:19:26,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:19:26,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:19:26,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:19:26,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:19:26,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:19:26,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:19:26,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:19:26,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:19:26,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:19:26,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:19:26,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:19:26,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:19:26,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:19:26,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:19:26,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:19:26,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:19:26,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:19:26,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:19:26,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:19:26,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:19:26,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:19:26,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:19:26,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:19:26,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:19:27,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:19:27,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:19:27,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:19:27,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:19:27,319 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:19:27,321 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-21 11:19:27,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/334f87cbe/5f6c67c97e084c16bad6b67314ffc4ce/FLAG5a63a2940 [2020-09-21 11:19:27,950 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:19:27,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-21 11:19:27,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/334f87cbe/5f6c67c97e084c16bad6b67314ffc4ce/FLAG5a63a2940 [2020-09-21 11:19:28,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/334f87cbe/5f6c67c97e084c16bad6b67314ffc4ce [2020-09-21 11:19:28,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:19:28,313 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:19:28,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:28,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:19:28,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:19:28,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:28" (1/1) ... [2020-09-21 11:19:28,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:28, skipping insertion in model container [2020-09-21 11:19:28,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:28" (1/1) ... [2020-09-21 11:19:28,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:19:28,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:19:28,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:28,574 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:19:28,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:28,611 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:19:28,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:28 WrapperNode [2020-09-21 11:19:28,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:28,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:19:28,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:19:28,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:19:28,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:28" (1/1) ... [2020-09-21 11:19:28,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:28" (1/1) ... [2020-09-21 11:19:28,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:28" (1/1) ... [2020-09-21 11:19:28,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:28" (1/1) ... [2020-09-21 11:19:28,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:28" (1/1) ... [2020-09-21 11:19:28,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:28" (1/1) ... [2020-09-21 11:19:28,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:28" (1/1) ... [2020-09-21 11:19:28,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:19:28,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:19:28,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:19:28,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:19:28,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-21 11:19:28,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:19:28,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:19:28,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-09-21 11:19:28,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-09-21 11:19:28,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:19:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:19:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:19:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-09-21 11:19:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-09-21 11:19:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:19:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:19:28,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:19:29,067 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:19:29,067 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:19:29,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:29 BoogieIcfgContainer [2020-09-21 11:19:29,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:19:29,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:19:29,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:19:29,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:19:29,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:19:28" (1/3) ... [2020-09-21 11:19:29,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7166ac0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:29, skipping insertion in model container [2020-09-21 11:19:29,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:28" (2/3) ... [2020-09-21 11:19:29,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7166ac0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:29, skipping insertion in model container [2020-09-21 11:19:29,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:29" (3/3) ... [2020-09-21 11:19:29,109 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-09-21 11:19:29,128 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:19:29,138 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:19:29,160 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:19:29,203 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:19:29,203 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:19:29,204 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:19:29,204 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:19:29,204 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:19:29,204 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:19:29,204 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:19:29,205 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:19:29,236 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-21 11:19:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:19:29,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:29,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:29,249 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:29,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:29,257 INFO L82 PathProgramCache]: Analyzing trace with hash -2122072279, now seen corresponding path program 1 times [2020-09-21 11:19:29,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:29,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910399163] [2020-09-21 11:19:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:29,531 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:29,532 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:29,532 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:29,532 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:19:29,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-21 11:19:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:29,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:29,678 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:29,678 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:29,678 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:29,679 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:29,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:29,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:29,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:29,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:29,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:29,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:29,709 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:29,710 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:29,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:29,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:29,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:29,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:19:29,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:19:29,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910399163] [2020-09-21 11:19:29,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:29,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:19:29,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759799116] [2020-09-21 11:19:29,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:19:29,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:29,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:19:29,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:29,781 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 6 states. [2020-09-21 11:19:29,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:29,927 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-09-21 11:19:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:19:29,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-21 11:19:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:29,943 INFO L225 Difference]: With dead ends: 41 [2020-09-21 11:19:29,943 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 11:19:29,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:19:29,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 11:19:29,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-21 11:19:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 11:19:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-09-21 11:19:30,005 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2020-09-21 11:19:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:30,005 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-09-21 11:19:30,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:19:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-09-21 11:19:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 11:19:30,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:30,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:30,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:19:30,009 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:30,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:30,009 INFO L82 PathProgramCache]: Analyzing trace with hash -612070348, now seen corresponding path program 1 times [2020-09-21 11:19:30,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:30,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704081387] [2020-09-21 11:19:30,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:30,069 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:30,069 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:30,069 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:30,070 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:30,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:19:30,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:30,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:19:30,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:30,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:30,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:30,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:19:30,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:30,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:30,177 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:30,177 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:30,177 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:30,178 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:30,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:30,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:30,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:30,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:30,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:30,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:30,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:30,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:30,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:30,199 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:30,199 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:30,199 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:30,200 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:30,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:30,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:19:30,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:30,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:19:30,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704081387] [2020-09-21 11:19:30,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:30,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:19:30,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131076375] [2020-09-21 11:19:30,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:19:30,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:30,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:19:30,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:30,246 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 6 states. [2020-09-21 11:19:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:30,334 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-09-21 11:19:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:19:30,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-21 11:19:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:30,336 INFO L225 Difference]: With dead ends: 33 [2020-09-21 11:19:30,336 INFO L226 Difference]: Without dead ends: 29 [2020-09-21 11:19:30,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:19:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-21 11:19:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-09-21 11:19:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 11:19:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-09-21 11:19:30,348 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2020-09-21 11:19:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:30,349 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-09-21 11:19:30,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:19:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-09-21 11:19:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:19:30,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:30,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:30,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:19:30,351 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:30,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:30,351 INFO L82 PathProgramCache]: Analyzing trace with hash -592576498, now seen corresponding path program 1 times [2020-09-21 11:19:30,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:30,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90709338] [2020-09-21 11:19:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:30,412 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:30,412 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:30,413 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:30,414 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:30,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 11:19:30,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:30,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:30,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:19:30,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:30,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:30,442 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:30,443 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:30,443 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:30,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:30,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:30,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:30,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:30,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:30,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:30,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:30,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:30,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:19:30,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:30,474 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:30,474 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:30,475 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:30,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:30,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:30,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:19:30,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-21 11:19:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:30,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:30,502 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:30,503 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:30,503 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:30,503 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:30,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:30,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:19:30,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:19:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:19:30,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90709338] [2020-09-21 11:19:30,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:30,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:19:30,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705561280] [2020-09-21 11:19:30,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:19:30,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:30,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:19:30,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:19:30,526 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-09-21 11:19:30,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:30,565 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-09-21 11:19:30,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:19:30,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-21 11:19:30,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:30,568 INFO L225 Difference]: With dead ends: 41 [2020-09-21 11:19:30,568 INFO L226 Difference]: Without dead ends: 29 [2020-09-21 11:19:30,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:30,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-21 11:19:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-09-21 11:19:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 11:19:30,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-09-21 11:19:30,576 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2020-09-21 11:19:30,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:30,576 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-09-21 11:19:30,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:19:30,577 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-09-21 11:19:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:19:30,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:30,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:30,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:19:30,578 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:30,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1306118367, now seen corresponding path program 1 times [2020-09-21 11:19:30,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:30,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426618025] [2020-09-21 11:19:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:30,678 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:30,679 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:30,679 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:30,679 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:30,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:19:30,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:30,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-21 11:19:30,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:30,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:19:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:30,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:30,768 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:30,768 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:30,768 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:30,768 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:30,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:30,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:30,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:30,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:30,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:30,836 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:30,837 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:30,837 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:30,837 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:30,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:30,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:30,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 11:19:30,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:19:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:30,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:30,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:30,923 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:30,923 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:30,923 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:30,924 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:30,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:30,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:30,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:19:30,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:30,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:30,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:19:30,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426618025] [2020-09-21 11:19:30,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:30,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:19:30,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746138876] [2020-09-21 11:19:30,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:19:30,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:30,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:19:30,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:19:30,980 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 9 states. [2020-09-21 11:19:31,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:31,107 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-09-21 11:19:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:19:31,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-09-21 11:19:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:31,109 INFO L225 Difference]: With dead ends: 36 [2020-09-21 11:19:31,112 INFO L226 Difference]: Without dead ends: 32 [2020-09-21 11:19:31,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:19:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-21 11:19:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-21 11:19:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 11:19:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-09-21 11:19:31,125 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-09-21 11:19:31,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:31,125 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-09-21 11:19:31,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:19:31,126 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-09-21 11:19:31,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 11:19:31,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:31,130 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:31,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:19:31,131 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:31,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1571291849, now seen corresponding path program 1 times [2020-09-21 11:19:31,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:31,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824039286] [2020-09-21 11:19:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:31,164 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:31,164 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:31,164 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:31,164 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:31,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:19:31,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:31,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:19:31,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:31,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 11:19:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:31,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:31,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:31,187 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:31,188 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:31,188 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:31,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:31,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:31,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:31,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:31,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:31,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:31,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:31,206 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:31,206 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:31,207 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:31,207 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:31,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:19:31,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:31,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:19:31,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:19:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:31,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:31,229 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:31,230 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:31,230 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:31,230 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:31,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:31,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:31,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:19:31,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-21 11:19:31,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:31,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:31,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:31,248 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:31,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:31,250 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:31,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:31,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:31,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:31,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:19:31,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:19:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:31,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:19:31,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824039286] [2020-09-21 11:19:31,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:31,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:19:31,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348918895] [2020-09-21 11:19:31,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:19:31,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:19:31,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:19:31,274 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-09-21 11:19:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:31,320 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-09-21 11:19:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:19:31,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-21 11:19:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:31,322 INFO L225 Difference]: With dead ends: 42 [2020-09-21 11:19:31,322 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 11:19:31,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 11:19:31,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 11:19:31,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 11:19:31,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-09-21 11:19:31,335 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2020-09-21 11:19:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:31,335 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-09-21 11:19:31,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:19:31,336 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-09-21 11:19:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 11:19:31,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:31,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:31,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:19:31,338 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:31,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:31,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1610221656, now seen corresponding path program 1 times [2020-09-21 11:19:31,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:31,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999652491] [2020-09-21 11:19:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:31,460 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:31,460 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:31,461 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:31,461 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:31,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 11:19:31,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:31,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 11:19:31,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:31,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-21 11:19:31,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:31,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:31,564 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:31,565 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:31,565 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:31,565 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:31,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:31,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:31,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:31,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:31,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:31,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:31,615 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:31,616 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:31,616 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:31,617 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:31,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:31,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:31,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:19:31,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:31,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:19:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:31,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:31,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:31,721 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:31,722 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:31,722 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:31,722 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:31,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:31,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 11:19:31,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:31,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:31,788 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:31,788 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:31,789 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:31,789 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:31,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:31,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:31,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:19:31,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:31,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 11:19:31,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999652491] [2020-09-21 11:19:31,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:31,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 11:19:31,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420935] [2020-09-21 11:19:31,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 11:19:31,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:31,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 11:19:31,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:19:31,827 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 11 states. [2020-09-21 11:19:32,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:32,035 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-09-21 11:19:32,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:19:32,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-21 11:19:32,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:32,037 INFO L225 Difference]: With dead ends: 42 [2020-09-21 11:19:32,037 INFO L226 Difference]: Without dead ends: 38 [2020-09-21 11:19:32,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-21 11:19:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-21 11:19:32,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-09-21 11:19:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 11:19:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-09-21 11:19:32,044 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2020-09-21 11:19:32,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:32,045 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-09-21 11:19:32,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 11:19:32,045 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-09-21 11:19:32,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 11:19:32,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:32,046 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:32,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:19:32,047 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:32,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:32,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1417612799, now seen corresponding path program 1 times [2020-09-21 11:19:32,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:32,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284402762] [2020-09-21 11:19:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:32,152 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:32,152 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:32,152 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:32,153 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:32,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-21 11:19:32,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:32,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-21 11:19:32,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 11:19:32,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:32,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:32,203 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:32,204 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:32,204 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:32,204 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:32,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:32,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:32,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:32,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:32,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:32,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:32,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:32,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:32,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:32,276 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:32,277 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:32,277 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:32,277 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:32,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:32,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:32,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 11:19:32,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:32,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-21 11:19:32,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:32,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:32,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:32,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:32,361 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:32,361 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:32,361 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:32,362 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:32,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:32,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:32,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 11:19:32,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:32,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:32,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:32,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:32,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:32,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:32,435 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:32,436 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:32,436 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:32,436 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:32,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:32,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:32,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:19:32,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:32,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:32,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:32,501 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:32,501 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:32,501 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:32,502 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:32,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:32,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:32,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:19:32,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:32,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:32,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:32,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:32,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 11:19:32,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284402762] [2020-09-21 11:19:32,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:32,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 11:19:32,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455802958] [2020-09-21 11:19:32,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 11:19:32,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:32,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 11:19:32,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:19:32,558 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 13 states. [2020-09-21 11:19:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:32,835 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-09-21 11:19:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 11:19:32,836 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-09-21 11:19:32,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:32,837 INFO L225 Difference]: With dead ends: 48 [2020-09-21 11:19:32,837 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 11:19:32,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2020-09-21 11:19:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 11:19:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2020-09-21 11:19:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 11:19:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-09-21 11:19:32,845 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 36 [2020-09-21 11:19:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:32,845 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-09-21 11:19:32,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 11:19:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-09-21 11:19:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-21 11:19:32,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:32,847 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:32,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:19:32,847 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:32,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:32,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1668529660, now seen corresponding path program 2 times [2020-09-21 11:19:32,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:32,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357594771] [2020-09-21 11:19:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:33,009 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:33,010 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:33,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:33,010 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:33,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 11:19:33,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-21 11:19:33,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:33,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 11:19:33,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:33,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:33,083 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:33,084 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:33,084 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:33,084 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:33,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:33,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:33,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:33,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:33,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:33,173 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:33,174 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:33,174 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:33,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:33,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:33,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:33,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-21 11:19:33,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-21 11:19:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:33,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:33,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:33,286 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:33,287 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:33,287 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:33,287 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:33,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:33,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:33,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-21 11:19:33,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:33,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:33,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:33,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:33,389 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:33,389 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:33,389 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:33,389 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:33,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:33,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 11:19:33,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:33,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:33,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:33,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:33,481 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:33,482 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:33,482 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:33,482 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:33,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:33,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:33,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:19:33,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:33,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:33,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:33,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:33,550 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:33,551 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:33,551 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:33,551 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:33,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:33,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:33,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:19:33,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:33,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:33,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-21 11:19:33,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357594771] [2020-09-21 11:19:33,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:33,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-21 11:19:33,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447308431] [2020-09-21 11:19:33,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 11:19:33,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:33,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 11:19:33,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:19:33,599 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 15 states. [2020-09-21 11:19:33,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:33,976 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-09-21 11:19:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 11:19:33,978 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-09-21 11:19:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:33,979 INFO L225 Difference]: With dead ends: 54 [2020-09-21 11:19:33,979 INFO L226 Difference]: Without dead ends: 50 [2020-09-21 11:19:33,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2020-09-21 11:19:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-21 11:19:33,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-09-21 11:19:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 11:19:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-09-21 11:19:33,991 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2020-09-21 11:19:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:33,991 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-09-21 11:19:33,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 11:19:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-09-21 11:19:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-21 11:19:33,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:33,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:33,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:19:33,995 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:33,995 INFO L82 PathProgramCache]: Analyzing trace with hash -150927713, now seen corresponding path program 2 times [2020-09-21 11:19:33,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:33,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533136705] [2020-09-21 11:19:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:34,241 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:34,242 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:34,242 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:34,242 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:34,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-21 11:19:34,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-21 11:19:34,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:19:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 11:19:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:34,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:34,329 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:34,330 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:34,330 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:34,330 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:34,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:34,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:34,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:34,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:34,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:34,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:34,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:34,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:34,505 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:34,505 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:34,506 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:34,506 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:34,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:19:34,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-21 11:19:34,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-21 11:19:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:19:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:34,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:34,644 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:34,645 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:34,645 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:34,645 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:34,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:34,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-21 11:19:34,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:34,776 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:34,777 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:34,777 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:34,777 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:34,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:34,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:34,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 11:19:34,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:34,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:34,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:34,866 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:34,866 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:34,867 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:34,867 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:34,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:34,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 11:19:34,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:34,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:34,938 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:34,939 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:34,939 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:34,939 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:34,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:34,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:19:34,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:34,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:34,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:35,006 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:35,007 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:35,007 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:35,007 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:35,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:35,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:35,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:19:35,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:35,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:35,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:35,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:35,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-21 11:19:35,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533136705] [2020-09-21 11:19:35,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:35,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-21 11:19:35,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364288376] [2020-09-21 11:19:35,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-21 11:19:35,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:35,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-21 11:19:35,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-21 11:19:35,056 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 17 states. [2020-09-21 11:19:35,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:35,592 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-09-21 11:19:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 11:19:35,593 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-09-21 11:19:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:35,594 INFO L225 Difference]: With dead ends: 60 [2020-09-21 11:19:35,595 INFO L226 Difference]: Without dead ends: 56 [2020-09-21 11:19:35,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2020-09-21 11:19:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-21 11:19:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2020-09-21 11:19:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 11:19:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-21 11:19:35,608 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 50 [2020-09-21 11:19:35,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:35,610 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-21 11:19:35,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-21 11:19:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-21 11:19:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:19:35,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:35,611 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:35,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:19:35,612 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:35,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:35,614 INFO L82 PathProgramCache]: Analyzing trace with hash -308892384, now seen corresponding path program 3 times [2020-09-21 11:19:35,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:35,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235593517] [2020-09-21 11:19:35,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:35,920 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:35,921 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:35,921 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:35,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:35,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:19:35,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-21 11:19:35,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:19:35,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:35,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 11:19:35,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,014 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,014 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,015 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,015 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:36,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:36,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:36,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:36,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,192 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,192 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,192 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,193 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:19:36,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-21 11:19:36,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-21 11:19:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:19:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,395 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,396 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,396 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:19:36,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-21 11:19:36,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:19:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:19:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,575 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,576 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,576 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,576 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:36,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-21 11:19:36,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:36,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,718 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,718 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,719 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,719 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:36,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-21 11:19:36,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:36,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:36,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,849 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,849 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,849 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,850 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:36,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 11:19:36,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:36,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:36,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:36,961 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:36,962 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:36,962 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:36,962 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:36,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:36,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:36,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:19:36,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:37,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:37,049 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:37,049 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:37,049 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:37,050 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:37,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:37,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:19:37,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:37,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-21 11:19:37,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235593517] [2020-09-21 11:19:37,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:37,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-21 11:19:37,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967123695] [2020-09-21 11:19:37,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-21 11:19:37,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:37,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-21 11:19:37,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:19:37,134 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 19 states. [2020-09-21 11:19:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:37,882 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-09-21 11:19:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 11:19:37,884 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-09-21 11:19:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:37,886 INFO L225 Difference]: With dead ends: 66 [2020-09-21 11:19:37,886 INFO L226 Difference]: Without dead ends: 62 [2020-09-21 11:19:37,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=905, Unknown=0, NotChecked=0, Total=992 [2020-09-21 11:19:37,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-21 11:19:37,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2020-09-21 11:19:37,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 11:19:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-09-21 11:19:37,894 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 57 [2020-09-21 11:19:37,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:37,894 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-09-21 11:19:37,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-21 11:19:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-09-21 11:19:37,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-21 11:19:37,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:37,897 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:37,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:19:37,897 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:37,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1668346559, now seen corresponding path program 3 times [2020-09-21 11:19:37,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:37,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766240964] [2020-09-21 11:19:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,175 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:38,176 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:38,176 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:38,176 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-21 11:19:38,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-21 11:19:38,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 11:19:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:38,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-21 11:19:38,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,271 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,271 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,271 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,271 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:38,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:38,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:38,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:38,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,499 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,499 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,500 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,500 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 11:19:38,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-21 11:19:38,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-21 11:19:38,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:38,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 11:19:38,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,719 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,719 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,720 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,720 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:19:38,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-21 11:19:38,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:19:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:38,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:19:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:38,893 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:38,893 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:38,893 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:38,893 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:38,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:19:38,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:38,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-21 11:19:38,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:19:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:19:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:38,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:39,028 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:39,028 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:39,028 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:39,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:39,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:39,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:39,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-21 11:19:39,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:39,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:39,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:39,133 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:39,134 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:39,134 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:39,134 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:39,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:39,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 11:19:39,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:39,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:39,236 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:39,236 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:39,237 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:39,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:39,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:39,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:39,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 11:19:39,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:39,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:39,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:39,339 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:39,340 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:39,341 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:39,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:39,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:39,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:19:39,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:39,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:39,423 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:39,423 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:39,424 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:39,424 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:39,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:39,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:39,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:19:39,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:39,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-21 11:19:39,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766240964] [2020-09-21 11:19:39,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:39,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-21 11:19:39,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051491648] [2020-09-21 11:19:39,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-21 11:19:39,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:39,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-21 11:19:39,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-21 11:19:39,492 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 21 states. [2020-09-21 11:19:40,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:40,279 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-09-21 11:19:40,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 11:19:40,280 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-09-21 11:19:40,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:40,283 INFO L225 Difference]: With dead ends: 72 [2020-09-21 11:19:40,283 INFO L226 Difference]: Without dead ends: 68 [2020-09-21 11:19:40,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2020-09-21 11:19:40,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-21 11:19:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2020-09-21 11:19:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-21 11:19:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-09-21 11:19:40,299 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 64 [2020-09-21 11:19:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:40,300 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-09-21 11:19:40,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-21 11:19:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-09-21 11:19:40,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-21 11:19:40,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:40,301 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:40,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:19:40,302 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:40,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:40,302 INFO L82 PathProgramCache]: Analyzing trace with hash 353359300, now seen corresponding path program 4 times [2020-09-21 11:19:40,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:40,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708065929] [2020-09-21 11:19:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:40,645 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:40,646 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:40,646 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:40,646 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:40,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-21 11:19:40,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:40,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-21 11:19:40,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-21 11:19:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:40,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 11:19:40,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:40,707 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:40,707 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:40,708 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:40,708 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:40,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:40,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:40,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:40,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:40,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:40,985 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:40,985 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:40,986 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:40,986 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:40,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 11:19:40,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:40,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-21 11:19:40,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-09-21 11:19:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-21 11:19:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:41,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:41,237 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:41,237 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:41,237 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:41,238 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:41,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 11:19:41,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:41,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-21 11:19:41,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 11:19:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:41,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 11:19:41,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:41,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:41,466 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:41,466 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:41,467 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:41,467 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:41,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:19:41,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:41,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-21 11:19:41,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:19:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:19:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:41,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:41,657 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:41,658 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:41,658 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:41,658 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:41,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:19:41,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-21 11:19:41,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:19:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:41,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:19:41,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:41,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:41,798 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:41,798 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:41,798 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:41,798 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:41,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:41,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:41,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-21 11:19:41,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:41,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:41,921 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:41,921 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:41,921 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:41,922 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:41,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:41,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:41,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-21 11:19:41,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:41,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:42,020 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:42,021 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:42,021 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:42,021 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:42,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:42,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 11:19:42,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:42,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:42,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:42,114 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:42,115 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:42,115 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:42,115 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:42,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:42,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:42,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:19:42,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:42,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:42,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:42,198 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:42,198 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:42,198 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:42,199 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:42,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:42,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:42,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:19:42,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:42,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:42,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-21 11:19:42,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708065929] [2020-09-21 11:19:42,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:42,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-21 11:19:42,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541273099] [2020-09-21 11:19:42,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-21 11:19:42,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:42,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-21 11:19:42,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-21 11:19:42,309 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 23 states. [2020-09-21 11:19:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:43,319 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2020-09-21 11:19:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-21 11:19:43,319 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-09-21 11:19:43,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:43,320 INFO L225 Difference]: With dead ends: 78 [2020-09-21 11:19:43,321 INFO L226 Difference]: Without dead ends: 74 [2020-09-21 11:19:43,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1449, Unknown=0, NotChecked=0, Total=1560 [2020-09-21 11:19:43,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-21 11:19:43,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 51. [2020-09-21 11:19:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-21 11:19:43,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-21 11:19:43,342 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 71 [2020-09-21 11:19:43,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:43,342 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-21 11:19:43,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-21 11:19:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-21 11:19:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-21 11:19:43,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:43,343 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:43,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:19:43,346 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:43,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:43,346 INFO L82 PathProgramCache]: Analyzing trace with hash -165146017, now seen corresponding path program 4 times [2020-09-21 11:19:43,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:43,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748143331] [2020-09-21 11:19:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:43,734 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:43,734 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:43,734 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:43,734 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:43,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-21 11:19:43,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:43,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-21 11:19:43,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:43,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-09-21 11:19:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:43,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-21 11:19:43,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:43,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:43,790 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:43,791 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:43,791 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:43,791 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:43,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:43,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:43,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:43,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:43,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:43,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:44,065 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:44,065 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:44,065 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:44,065 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:44,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 11:19:44,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:44,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-21 11:19:44,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:44,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-09-21 11:19:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 11:19:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:44,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:44,371 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:44,372 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:44,372 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:44,372 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:44,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 11:19:44,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:44,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-21 11:19:44,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:44,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-21 11:19:44,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-21 11:19:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:44,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:44,624 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:44,624 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:44,624 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:44,625 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:44,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 11:19:44,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-21 11:19:44,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:44,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 11:19:44,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:44,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 11:19:44,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:44,832 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:44,832 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:44,833 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:44,833 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:44,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:19:44,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:44,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-21 11:19:44,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:19:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:19:44,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:44,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,016 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:45,017 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,017 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,017 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:19:45,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-21 11:19:45,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:19:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:19:45,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:45,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,155 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:45,155 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,155 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,156 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:45,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-21 11:19:45,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:45,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,277 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:45,277 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,277 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,278 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:45,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 11:19:45,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:45,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:45,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,376 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:45,377 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,377 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,378 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:45,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 11:19:45,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:45,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:45,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,501 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:45,502 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,502 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,502 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:45,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:19:45,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:45,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:45,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:45,615 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:45,615 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:45,616 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:45,616 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:45,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:45,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:45,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:19:45,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:45,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:45,713 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-21 11:19:45,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748143331] [2020-09-21 11:19:45,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:45,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-21 11:19:45,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242704272] [2020-09-21 11:19:45,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-21 11:19:45,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:45,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-21 11:19:45,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-21 11:19:45,716 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 25 states. [2020-09-21 11:19:46,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:46,779 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2020-09-21 11:19:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-21 11:19:46,780 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 78 [2020-09-21 11:19:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:46,781 INFO L225 Difference]: With dead ends: 84 [2020-09-21 11:19:46,782 INFO L226 Difference]: Without dead ends: 80 [2020-09-21 11:19:46,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 16 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=123, Invalid=1769, Unknown=0, NotChecked=0, Total=1892 [2020-09-21 11:19:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-21 11:19:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 54. [2020-09-21 11:19:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 11:19:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-09-21 11:19:46,791 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 78 [2020-09-21 11:19:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:46,791 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-09-21 11:19:46,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-21 11:19:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-09-21 11:19:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-21 11:19:46,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:46,806 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:46,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:19:46,807 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:46,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:46,807 INFO L82 PathProgramCache]: Analyzing trace with hash 462698472, now seen corresponding path program 5 times [2020-09-21 11:19:46,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:46,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971180530] [2020-09-21 11:19:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:47,241 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:47,242 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:47,242 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:47,242 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:47,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 11:19:47,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:47,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-21 11:19:47,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-09-21 11:19:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-21 11:19:47,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:47,325 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:47,325 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:47,325 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:47,326 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:47,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:47,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:47,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:47,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:47,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:47,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:47,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:47,732 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:47,733 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:47,733 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:47,733 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:47,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-21 11:19:47,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:47,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-21 11:19:47,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-09-21 11:19:47,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:47,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-21 11:19:47,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:47,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:48,151 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:48,152 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:48,152 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:48,152 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:48,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 11:19:48,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:48,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-21 11:19:48,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:48,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-09-21 11:19:48,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:48,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 11:19:48,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:48,510 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:48,511 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:48,511 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:48,512 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:48,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 11:19:48,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-21 11:19:48,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-21 11:19:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-21 11:19:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:48,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:48,814 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:48,821 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:48,822 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:48,822 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:48,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 11:19:48,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-21 11:19:48,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 11:19:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 11:19:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:49,112 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:49,112 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:49,113 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:49,113 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:49,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:19:49,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:49,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-21 11:19:49,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:19:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:49,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:19:49,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:49,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:49,327 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:49,328 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:49,328 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:49,329 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:49,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:19:49,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-21 11:19:49,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:19:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:19:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:49,523 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:49,523 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:49,523 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:49,523 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:49,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:49,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-21 11:19:49,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:49,651 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:49,651 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:49,652 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:49,652 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:49,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:49,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:49,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 11:19:49,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:49,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:49,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:49,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:49,759 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:49,760 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:49,760 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:49,760 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:49,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:49,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 11:19:49,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:49,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:49,870 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:49,870 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:49,870 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:49,871 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:49,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:49,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:19:49,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:49,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:49,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:49,963 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:49,964 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:49,964 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:49,964 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:49,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:49,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:49,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:19:49,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:49,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:49,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:49,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:49,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-09-21 11:19:50,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971180530] [2020-09-21 11:19:50,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:50,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-21 11:19:50,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133934194] [2020-09-21 11:19:50,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-21 11:19:50,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:50,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-21 11:19:50,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-21 11:19:50,084 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 27 states. [2020-09-21 11:19:51,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:51,517 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-09-21 11:19:51,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-21 11:19:51,517 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 85 [2020-09-21 11:19:51,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:51,519 INFO L225 Difference]: With dead ends: 90 [2020-09-21 11:19:51,519 INFO L226 Difference]: Without dead ends: 86 [2020-09-21 11:19:51,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=135, Invalid=2121, Unknown=0, NotChecked=0, Total=2256 [2020-09-21 11:19:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-21 11:19:51,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 57. [2020-09-21 11:19:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-21 11:19:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-09-21 11:19:51,528 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 85 [2020-09-21 11:19:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:51,528 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-09-21 11:19:51,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-21 11:19:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-09-21 11:19:51,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-21 11:19:51,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:51,530 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:51,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:19:51,530 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:51,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:51,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1580751489, now seen corresponding path program 5 times [2020-09-21 11:19:51,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:51,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262923747] [2020-09-21 11:19:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:52,037 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:52,038 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:52,038 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:52,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:52,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-21 11:19:52,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:52,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-09-21 11:19:52,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-09-21 11:19:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-21 11:19:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:52,138 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:52,138 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:52,138 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:52,139 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:52,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:52,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:52,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:52,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:52,603 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:52,604 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:52,604 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:52,604 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:52,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 11:19:52,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:52,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-09-21 11:19:52,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:52,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-09-21 11:19:52,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-21 11:19:52,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:52,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:53,096 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:53,096 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:53,096 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:53,097 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:53,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-21 11:19:53,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:53,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-21 11:19:53,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-09-21 11:19:53,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:53,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-21 11:19:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:53,476 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:53,476 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:53,476 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:53,477 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:53,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 11:19:53,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:53,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-21 11:19:53,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-09-21 11:19:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 11:19:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:53,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:53,751 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:53,752 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:53,752 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:53,752 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:53,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 11:19:53,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:53,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-21 11:19:53,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:53,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-21 11:19:53,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:53,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-21 11:19:53,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:53,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:53,986 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:53,986 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:53,986 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:53,987 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:53,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 11:19:53,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:53,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-21 11:19:53,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 11:19:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 11:19:53,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:54,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:54,196 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:54,196 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:54,196 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:54,196 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:54,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:19:54,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:54,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-21 11:19:54,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:54,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:19:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:54,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:19:54,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:54,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:54,374 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:54,375 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:54,375 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:54,375 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:54,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:19:54,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:54,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 11:19:54,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:19:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:19:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:54,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:54,514 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:54,515 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:54,515 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:54,516 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:54,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:19:54,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:54,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 11:19:54,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:19:54,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:54,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:19:54,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:54,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:54,677 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:54,677 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:54,677 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:54,678 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:54,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:19:54,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 11:19:54,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:54,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:19:54,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:19:54,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:54,825 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:54,825 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:54,826 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:54,826 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:54,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:19:54,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:54,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 11:19:54,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:54,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:54,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:19:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:54,972 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:54,972 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:54,973 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:54,973 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:54,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:19:54,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:19:54,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:54,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:19:55,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:55,110 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:55,110 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:55,111 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:55,111 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:55,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:55,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:55,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:19:55,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:55,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:55,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:55,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:55,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:19:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-09-21 11:19:55,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262923747] [2020-09-21 11:19:55,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:55,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-21 11:19:55,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910180555] [2020-09-21 11:19:55,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-21 11:19:55,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:55,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-21 11:19:55,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-21 11:19:55,379 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 29 states. [2020-09-21 11:19:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:57,075 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2020-09-21 11:19:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-21 11:19:57,076 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 92 [2020-09-21 11:19:57,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:57,077 INFO L225 Difference]: With dead ends: 96 [2020-09-21 11:19:57,078 INFO L226 Difference]: Without dead ends: 92 [2020-09-21 11:19:57,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=147, Invalid=2505, Unknown=0, NotChecked=0, Total=2652 [2020-09-21 11:19:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-21 11:19:57,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 60. [2020-09-21 11:19:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-21 11:19:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-09-21 11:19:57,086 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 92 [2020-09-21 11:19:57,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:57,086 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-09-21 11:19:57,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-21 11:19:57,086 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-09-21 11:19:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-21 11:19:57,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:57,087 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:57,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 11:19:57,088 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:57,088 INFO L82 PathProgramCache]: Analyzing trace with hash 165729164, now seen corresponding path program 6 times [2020-09-21 11:19:57,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:57,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107574474] [2020-09-21 11:19:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:57,703 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:57,703 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:57,703 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:57,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-21 11:19:57,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-09-21 11:19:57,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-09-21 11:19:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:19:57,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-21 11:19:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:57,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:57,847 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:57,847 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:57,847 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:57,848 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:57,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:57,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:57,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:57,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:57,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:57,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:57,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:19:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:58,359 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:58,359 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:58,359 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:58,359 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:58,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 11:19:58,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:58,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-21 11:19:58,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:58,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-09-21 11:19:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-21 11:19:58,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:58,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:58,836 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:58,836 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:58,836 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:58,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:58,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 11:19:58,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:58,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-21 11:19:58,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-09-21 11:19:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-21 11:19:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:59,261 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:59,261 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:59,261 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:59,261 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:59,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-21 11:19:59,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:59,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-21 11:19:59,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-09-21 11:19:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-21 11:19:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:59,610 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:59,610 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:59,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:59,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:59,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 11:19:59,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-21 11:19:59,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-09-21 11:19:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 11:19:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:59,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:59,924 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:59,924 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:59,924 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:59,924 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:59,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 11:19:59,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-21 11:19:59,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-21 11:19:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-21 11:19:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,200 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:00,201 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,201 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,201 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 11:20:00,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-21 11:20:00,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 11:20:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 11:20:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,395 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:00,395 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,395 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:20:00,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-21 11:20:00,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:20:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:20:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,558 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:00,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,559 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:20:00,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-21 11:20:00,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:20:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:20:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:00,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,718 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:00,719 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,719 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,720 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:20:00,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 11:20:00,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:20:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:20:00,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:00,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:00,901 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:00,901 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:00,902 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:00,902 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:00,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:00,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:00,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 11:20:00,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:00,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:01,063 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:01,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:01,073 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:01,073 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:01,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:01,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:01,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 11:20:01,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:01,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:01,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:01,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:01,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:01,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:01,229 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:01,230 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:01,231 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:01,231 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:01,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:01,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:01,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:20:01,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:01,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:01,387 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:01,388 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:01,388 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:01,389 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:01,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:01,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:01,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:20:01,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:01,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:01,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:01,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:20:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-09-21 11:20:01,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107574474] [2020-09-21 11:20:01,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:01,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-21 11:20:01,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980673982] [2020-09-21 11:20:01,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-21 11:20:01,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:01,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-21 11:20:01,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-21 11:20:01,604 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 31 states. [2020-09-21 11:20:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:03,522 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-09-21 11:20:03,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-21 11:20:03,530 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 99 [2020-09-21 11:20:03,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:03,532 INFO L225 Difference]: With dead ends: 102 [2020-09-21 11:20:03,532 INFO L226 Difference]: Without dead ends: 98 [2020-09-21 11:20:03,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=159, Invalid=2921, Unknown=0, NotChecked=0, Total=3080 [2020-09-21 11:20:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-21 11:20:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 63. [2020-09-21 11:20:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-21 11:20:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-09-21 11:20:03,547 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 99 [2020-09-21 11:20:03,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:03,547 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-09-21 11:20:03,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-21 11:20:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-09-21 11:20:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-21 11:20:03,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:03,551 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:03,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 11:20:03,551 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:03,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:03,552 INFO L82 PathProgramCache]: Analyzing trace with hash -684135393, now seen corresponding path program 6 times [2020-09-21 11:20:03,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:03,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535353531] [2020-09-21 11:20:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:04,143 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:04,143 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:20:04,144 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:20:04,144 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:04,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-21 11:20:04,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:04,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-09-21 11:20:04,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-09-21 11:20:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:20:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-21 11:20:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:04,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:04,263 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:04,263 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:04,263 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:04,264 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:04,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:04,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:04,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:20:04,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:04,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:04,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:20:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:04,844 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:04,844 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:04,844 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:04,845 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:04,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-21 11:20:04,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:04,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-09-21 11:20:04,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:04,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-09-21 11:20:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:04,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-21 11:20:04,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:05,378 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:05,378 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:05,378 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:05,379 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:05,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 11:20:05,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-09-21 11:20:05,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-09-21 11:20:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-21 11:20:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:05,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:05,791 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:05,791 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:05,791 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:05,791 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:05,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 11:20:05,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:05,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-21 11:20:05,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-09-21 11:20:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-21 11:20:05,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:05,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:06,165 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:06,165 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:06,166 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:06,166 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:06,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-21 11:20:06,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:06,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-21 11:20:06,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-09-21 11:20:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:06,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-21 11:20:06,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:06,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:06,470 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:06,470 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:06,470 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:06,471 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:06,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 11:20:06,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:06,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-21 11:20:06,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:06,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-09-21 11:20:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:06,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 11:20:06,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:06,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:06,777 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:06,777 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:06,778 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:06,778 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:06,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 11:20:06,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:06,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-21 11:20:06,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:06,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-21 11:20:06,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:06,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-21 11:20:06,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:06,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:07,058 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:07,059 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:07,059 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:07,060 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:07,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 11:20:07,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-21 11:20:07,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 11:20:07,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:07,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 11:20:07,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:07,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:07,313 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:07,314 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:07,314 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:07,315 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:07,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:20:07,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:07,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-21 11:20:07,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:07,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:20:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:20:07,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:07,512 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:07,512 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:07,512 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:07,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:07,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:20:07,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 11:20:07,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:07,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:20:07,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:07,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:20:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:07,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:07,694 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:07,695 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:07,695 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:07,695 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:07,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:20:07,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:07,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-21 11:20:07,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:20:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:20:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:07,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:07,834 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:07,835 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:07,835 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:07,835 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:07,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:07,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 11:20:07,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:07,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:07,967 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:07,967 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:07,967 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:07,968 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:07,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:07,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:20:07,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:08,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:08,090 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:08,090 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:08,090 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:08,091 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:08,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:08,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:08,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:20:08,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:08,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:08,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:08,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:08,211 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:08,212 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:08,212 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:08,212 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:08,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:08,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:08,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:20:08,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:08,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-09-21 11:20:08,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535353531] [2020-09-21 11:20:08,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:20:08,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-09-21 11:20:08,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17698639] [2020-09-21 11:20:08,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-21 11:20:08,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:20:08,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-21 11:20:08,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2020-09-21 11:20:08,355 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 33 states. [2020-09-21 11:20:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:20:10,393 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2020-09-21 11:20:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-21 11:20:10,393 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 106 [2020-09-21 11:20:10,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:20:10,395 INFO L225 Difference]: With dead ends: 108 [2020-09-21 11:20:10,395 INFO L226 Difference]: Without dead ends: 104 [2020-09-21 11:20:10,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=171, Invalid=3369, Unknown=0, NotChecked=0, Total=3540 [2020-09-21 11:20:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-21 11:20:10,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2020-09-21 11:20:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-21 11:20:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-09-21 11:20:10,406 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 106 [2020-09-21 11:20:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:20:10,407 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-09-21 11:20:10,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-21 11:20:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-09-21 11:20:10,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-21 11:20:10,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:20:10,413 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:20:10,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 11:20:10,414 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:20:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:20:10,414 INFO L82 PathProgramCache]: Analyzing trace with hash -876959568, now seen corresponding path program 7 times [2020-09-21 11:20:10,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:20:10,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976340892] [2020-09-21 11:20:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:20:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:11,159 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:20:11,159 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:20:11,159 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:20:11,159 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:11,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-21 11:20:11,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:11,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-09-21 11:20:11,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-09-21 11:20:11,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:20:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-21 11:20:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:11,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:20:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:11,279 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:11,279 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:11,279 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:11,280 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:11,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:20:11,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:11,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:20:11,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:20:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:20:11,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:11,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:20:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:11,814 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:11,814 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:11,814 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:11,815 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:11,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-21 11:20:11,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:11,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-09-21 11:20:11,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:11,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-09-21 11:20:11,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:11,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-21 11:20:11,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:11,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:12,457 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:12,457 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:12,457 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:12,457 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:12,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-21 11:20:12,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-09-21 11:20:12,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-09-21 11:20:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-21 11:20:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:12,939 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:12,939 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:12,940 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:12,940 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:12,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 11:20:12,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-21 11:20:12,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-09-21 11:20:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-21 11:20:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:13,315 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:13,316 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:13,316 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:13,316 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:13,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-21 11:20:13,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-21 11:20:13,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-09-21 11:20:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-21 11:20:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:13,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:13,673 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:13,674 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:13,674 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:13,674 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:13,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-21 11:20:13,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:13,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-21 11:20:13,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-09-21 11:20:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-21 11:20:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:13,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:13,968 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:13,968 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:13,968 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:13,969 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:13,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 11:20:13,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:13,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-21 11:20:13,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-09-21 11:20:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-21 11:20:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:14,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:14,227 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:14,227 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:14,227 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:14,227 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:14,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-21 11:20:14,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:14,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-21 11:20:14,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-21 11:20:14,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-21 11:20:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:14,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:14,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:14,468 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:14,468 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:14,468 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:14,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 11:20:14,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:14,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-21 11:20:14,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-21 11:20:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-21 11:20:14,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:14,679 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:14,679 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:14,679 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:14,680 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:14,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 11:20:14,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:14,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-21 11:20:14,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:14,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-21 11:20:14,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:14,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-21 11:20:14,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:14,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:14,875 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:14,875 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:14,875 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:14,875 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:14,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:20:14,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:14,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-21 11:20:14,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:14,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-21 11:20:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 11:20:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:14,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:15,113 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:15,113 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:15,114 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:15,115 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:15,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 11:20:15,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-21 11:20:15,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-21 11:20:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 11:20:15,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:20:15,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:15,308 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:15,309 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:15,309 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:15,310 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:15,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 11:20:15,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 11:20:15,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-21 11:20:15,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-21 11:20:15,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:20:15,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:15,452 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:15,452 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:15,453 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:15,453 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:15,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:20:15,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:20:15,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:20:15,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:15,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:20:15,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:20:15,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:15,580 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:15,581 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:15,581 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:15,581 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:15,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:20:15,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:15,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:20:15,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:20:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:20:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:20:15,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:20:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:20:15,718 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:20:15,719 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:20:15,719 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:20:15,719 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:20:15,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:20:15,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:20:15,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:20:15,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:20:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:20:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:20:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:20:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1