/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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-simple/fibo_10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:31:56,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:31:56,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:31:56,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:31:56,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:31:56,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:31:56,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:31:56,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:31:56,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:31:56,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:31:56,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:31:56,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:31:56,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:31:56,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:31:56,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:31:56,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:31:56,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:31:56,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:31:56,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:31:56,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:31:56,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:31:56,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:31:56,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:31:56,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:31:56,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:31:56,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:31:56,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:31:56,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:31:56,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:31:56,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:31:56,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:31:56,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:31:56,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:31:56,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:31:56,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:31:56,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:31:56,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:31:56,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:31:56,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:31:56,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:31:56,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:31:56,832 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 [2020-09-24 21:31:56,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:31:56,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:31:56,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:31:56,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:31:56,890 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:31:56,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:31:56,892 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:31:56,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:31:56,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:31:56,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:31:56,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:31:56,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:31:56,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:31:56,895 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:31:56,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:31:56,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:31:56,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:31:56,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:31:56,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:31:56,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:31:56,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:31:56,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:31:56,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:31:56,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:31:56,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:31:56,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:31:56,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:31:56,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:31:56,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:31:56,899 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.rcfgbuilder: Size of a code block -> SingleStatement 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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:31:57,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:31:57,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:31:57,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:31:57,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:31:57,426 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:31:57,427 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2020-09-24 21:31:57,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53d220735/8811d958b3714b659fb047b1e9c3c84f/FLAGed581fe2c [2020-09-24 21:31:58,068 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:31:58,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2020-09-24 21:31:58,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53d220735/8811d958b3714b659fb047b1e9c3c84f/FLAGed581fe2c [2020-09-24 21:31:58,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53d220735/8811d958b3714b659fb047b1e9c3c84f [2020-09-24 21:31:58,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:31:58,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:31:58,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:31:58,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:31:58,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:31:58,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:31:58" (1/1) ... [2020-09-24 21:31:58,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fc400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:58, skipping insertion in model container [2020-09-24 21:31:58,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:31:58" (1/1) ... [2020-09-24 21:31:58,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:31:58,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:31:58,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:31:58,694 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:31:58,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:31:58,726 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:31:58,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:58 WrapperNode [2020-09-24 21:31:58,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:31:58,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:31:58,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:31:58,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:31:58,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:58" (1/1) ... [2020-09-24 21:31:58,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:58" (1/1) ... [2020-09-24 21:31:58,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:58" (1/1) ... [2020-09-24 21:31:58,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:58" (1/1) ... [2020-09-24 21:31:58,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:58" (1/1) ... [2020-09-24 21:31:58,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:58" (1/1) ... [2020-09-24 21:31:58,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:58" (1/1) ... [2020-09-24 21:31:58,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:31:58,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:31:58,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:31:58,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:31:58,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:58" (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 [2020-09-24 21:31:58,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:31:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:31:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 21:31:58,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:31:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:31:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:31:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 21:31:58,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:31:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:31:58,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:31:59,132 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:31:59,132 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:31:59,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:31:59 BoogieIcfgContainer [2020-09-24 21:31:59,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:31:59,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:31:59,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:31:59,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:31:59,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:31:58" (1/3) ... [2020-09-24 21:31:59,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee1f998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:31:59, skipping insertion in model container [2020-09-24 21:31:59,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:31:58" (2/3) ... [2020-09-24 21:31:59,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee1f998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:31:59, skipping insertion in model container [2020-09-24 21:31:59,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:31:59" (3/3) ... [2020-09-24 21:31:59,148 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_10-1.c [2020-09-24 21:31:59,160 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:31:59,172 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:31:59,222 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:31:59,284 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:31:59,285 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:31:59,285 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:31:59,285 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:31:59,285 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:31:59,285 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:31:59,286 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:31:59,286 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:31:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 21:31:59,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:31:59,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:31:59,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:31:59,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:31:59,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:31:59,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 21:31:59,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:31:59,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79177134] [2020-09-24 21:31:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:31:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:59,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:59,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:59,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:31:59,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:31:59,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 21:31:59,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:59,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:31:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:31:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:31:59,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:31:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:59,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:59,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:59,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:31:59,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:59,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:31:59,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:31:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:31:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:31:59,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:59,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:31:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:31:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:31:59,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:31:59,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:31:59,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:31:59,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:31:59,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:31:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:31:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:31:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:31:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:31:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:31:59,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79177134] [2020-09-24 21:31:59,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:31:59,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:31:59,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651554806] [2020-09-24 21:31:59,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:31:59,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:31:59,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:31:59,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:31:59,811 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 21:31:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:31:59,920 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 21:31:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:31:59,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:31:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:31:59,939 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:31:59,939 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 21:31:59,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:31:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 21:31:59,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 21:31:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:31:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:31:59,996 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 21:31:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:31:59,997 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:31:59,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:31:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:31:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 21:31:59,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:00,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:00,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:32:00,000 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:00,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:00,001 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 21:32:00,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:00,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396175001] [2020-09-24 21:32:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:00,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:00,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:00,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 21:32:00,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:00,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-24 21:32:00,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:00,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:00,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:32:00,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:00,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:00,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:00,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:00,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:32:00,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:00,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:00,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:00,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:00,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:00,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:00,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:00,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 21:32:00,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:32:00,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:00,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:00,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:32:00,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396175001] [2020-09-24 21:32:00,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:32:00,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:32:00,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887610] [2020-09-24 21:32:00,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:32:00,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:00,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:32:00,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:32:00,343 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 21:32:00,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:00,413 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 21:32:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:32:00,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 21:32:00,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:00,415 INFO L225 Difference]: With dead ends: 36 [2020-09-24 21:32:00,416 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 21:32:00,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:00,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 21:32:00,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 21:32:00,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:32:00,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:32:00,426 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 21:32:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:00,426 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:32:00,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:32:00,426 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:32:00,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 21:32:00,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:00,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-24 21:32:00,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:32:00,431 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:00,434 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 21:32:00,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:00,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168962418] [2020-09-24 21:32:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:00,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:00,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:00,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:00,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:02,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:32:02,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1816 [2020-09-24 21:32:02,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:32:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:02,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:02,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:02,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:02,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:02,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:02,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:02,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:02,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:02,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 21:32:02,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:02,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:32:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:02,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:02,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:02,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:02,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:02,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:32:02,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:02,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:02,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:02,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:02,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:02,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:02,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:02,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:02,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:32:02,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168962418] [2020-09-24 21:32:02,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:02,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:02,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970528846] [2020-09-24 21:32:02,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:02,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:02,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:02,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:02,611 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 21:32:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:02,798 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 21:32:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:32:02,800 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 21:32:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:02,804 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:32:02,804 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 21:32:02,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:32:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 21:32:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 21:32:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 21:32:02,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 21:32:02,835 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 21:32:02,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:02,835 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 21:32:02,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:02,836 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 21:32:02,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:32:02,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:02,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:02,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:32:02,843 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:02,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:02,843 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 21:32:02,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:02,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987623969] [2020-09-24 21:32:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:02,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:02,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:03,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:32:04,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:32:04,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1667 [2020-09-24 21:32:04,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:32:04,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:04,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:04,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:04,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:04,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:04,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:04,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:32:04,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:04,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-24 21:32:04,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:04,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:05,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:05,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:05,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:32:05,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:05,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:05,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:05,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:05,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:32:05,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:05,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:05,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:05,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:05,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 21:32:05,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987623969] [2020-09-24 21:32:05,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:05,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 21:32:05,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164291027] [2020-09-24 21:32:05,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:32:05,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:05,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:32:05,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:32:05,049 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-09-24 21:32:05,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:05,138 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-09-24 21:32:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:32:05,139 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 21:32:05,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:05,141 INFO L225 Difference]: With dead ends: 58 [2020-09-24 21:32:05,142 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 21:32:05,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:32:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 21:32:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-09-24 21:32:05,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 21:32:05,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-09-24 21:32:05,155 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 35 [2020-09-24 21:32:05,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:05,155 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-09-24 21:32:05,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:32:05,156 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2020-09-24 21:32:05,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:32:05,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:05,158 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:05,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:32:05,159 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:05,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:05,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 21:32:05,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:05,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626605764] [2020-09-24 21:32:05,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:05,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:32:10,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:32:10,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:32:10,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:32:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:10,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:10,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:10,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:10,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:10,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:10,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:32:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:10,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:13,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:32:13,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:32:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3325 [2020-09-24 21:32:13,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:13,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:32:13,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:13,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:13,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:13,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:13,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 21:32:13,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:13,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:13,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:13,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:13,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:32:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:13,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:13,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:13,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:13,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:13,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:13,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:13,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:13,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:13,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:13,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:13,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:13,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:13,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:13,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:13,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 21:32:13,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626605764] [2020-09-24 21:32:13,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:13,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:32:13,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946918684] [2020-09-24 21:32:13,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:32:13,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:13,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:32:13,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:32:13,710 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand 7 states. [2020-09-24 21:32:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:13,826 INFO L93 Difference]: Finished difference Result 60 states and 86 transitions. [2020-09-24 21:32:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:32:13,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-24 21:32:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:13,829 INFO L225 Difference]: With dead ends: 60 [2020-09-24 21:32:13,829 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 21:32:13,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:32:13,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 21:32:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2020-09-24 21:32:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 21:32:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-24 21:32:13,853 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 51 [2020-09-24 21:32:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:13,854 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-24 21:32:13,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:32:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-24 21:32:13,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:32:13,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:13,864 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:13,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:32:13,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:13,865 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-24 21:32:13,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:13,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721281718] [2020-09-24 21:32:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:14,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:18,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 21:32:18,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:32:18,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:32:18,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:32:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:18,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:18,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:18,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:18,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:18,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:18,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:32:20,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:20,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-09-24 21:32:20,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:20,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:32:20,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:20,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:32:20,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:20,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-24 21:32:20,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:32:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:32:20,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:20,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:20,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:32:20,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:20,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:32:20,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:20,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:32:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:20,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:20,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:20,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:32:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:20,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:20,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:20,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:20,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:20,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 21:32:20,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721281718] [2020-09-24 21:32:20,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:20,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:32:20,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070826253] [2020-09-24 21:32:20,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:32:20,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:20,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:32:20,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:32:20,610 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 9 states. [2020-09-24 21:32:20,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:20,793 INFO L93 Difference]: Finished difference Result 126 states and 216 transitions. [2020-09-24 21:32:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:32:20,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 21:32:20,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:20,803 INFO L225 Difference]: With dead ends: 126 [2020-09-24 21:32:20,803 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 21:32:20,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:32:20,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 21:32:20,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2020-09-24 21:32:20,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 21:32:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 117 transitions. [2020-09-24 21:32:20,838 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 117 transitions. Word has length 52 [2020-09-24 21:32:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:20,838 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 117 transitions. [2020-09-24 21:32:20,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:32:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 117 transitions. [2020-09-24 21:32:20,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-24 21:32:20,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:20,848 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:20,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:32:20,848 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:20,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:20,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1607002557, now seen corresponding path program 3 times [2020-09-24 21:32:20,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:20,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997343663] [2020-09-24 21:32:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:20,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:20,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:23,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:25,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 21:32:25,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-09-24 21:32:25,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 21:32:25,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:32:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:25,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:25,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:25,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:25,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:25,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:25,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:25,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:28,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:29,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:30,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:30,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 21:32:30,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 21:32:30,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 21:32:30,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:32:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:32:30,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:32:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:32:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:31,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:32,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:32,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:32:32,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:32:32,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1863 [2020-09-24 21:32:32,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:32:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:32,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:32:32,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:32,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:33,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:32:33,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 21:32:33,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:32:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:32:33,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:33,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:33,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:33,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:33,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:32:33,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:33,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:33,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:32:33,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:33,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:33,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 21:32:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:33,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:33,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:34,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:37,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:38,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:32:38,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 21:32:38,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:32:38,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:32:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:32:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 21:32:38,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:38,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:38,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:32:40,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:32:40,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1693 [2020-09-24 21:32:40,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:32:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:40,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:32:40,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:40,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:32:40,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:32:40,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 21:32:40,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:40,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:40,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:32:40,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:40,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:40,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:40,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:32:40,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:32:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:40,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:40,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:32:40,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:40,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:32:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:32:40,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:40,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:32:40,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:32:40,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 21:32:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:40,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:40,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:40,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:32:40,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:40,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:32:40,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:32:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:40,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:32:40,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 109 proven. 184 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-09-24 21:32:40,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997343663] [2020-09-24 21:32:40,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:32:40,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 21:32:40,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682946766] [2020-09-24 21:32:40,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:32:40,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:32:40,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:32:40,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:32:40,282 INFO L87 Difference]: Start difference. First operand 76 states and 117 transitions. Second operand 18 states. [2020-09-24 21:32:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:32:40,991 INFO L93 Difference]: Finished difference Result 195 states and 367 transitions. [2020-09-24 21:32:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 21:32:40,992 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 119 [2020-09-24 21:32:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:32:40,996 INFO L225 Difference]: With dead ends: 195 [2020-09-24 21:32:40,996 INFO L226 Difference]: Without dead ends: 119 [2020-09-24 21:32:40,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=221, Invalid=649, Unknown=0, NotChecked=0, Total=870 [2020-09-24 21:32:40,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-24 21:32:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 95. [2020-09-24 21:32:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 21:32:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 129 transitions. [2020-09-24 21:32:41,015 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 129 transitions. Word has length 119 [2020-09-24 21:32:41,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:32:41,016 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 129 transitions. [2020-09-24 21:32:41,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:32:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 129 transitions. [2020-09-24 21:32:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 21:32:41,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:32:41,019 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 16, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:32:41,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:32:41,019 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:32:41,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:32:41,020 INFO L82 PathProgramCache]: Analyzing trace with hash -472236661, now seen corresponding path program 4 times [2020-09-24 21:32:41,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:32:41,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411930523] [2020-09-24 21:32:41,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:32:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:41,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:42,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:46,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-24 21:32:46,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 21:32:46,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:32:46,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:46,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:32:46,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:32:46,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:32:46,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:46,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:32:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:46,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:32:46,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:32:46,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:32:46,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:32:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:32:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:32:46,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:32:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:46,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:49,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:32:51,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 21:32:51,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-24 21:32:51,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:32:51,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:32:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:32:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 21:32:51,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 21:32:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:32:51,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:32:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:32:51,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:32:51,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking...