/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=SMALLEST --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_2calls_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:13:34,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:13:34,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:13:34,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:13:34,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:13:34,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:13:34,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:13:34,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:13:34,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:13:34,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:13:34,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:13:34,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:13:34,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:13:34,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:13:34,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:13:34,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:13:34,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:13:34,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:13:34,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:13:34,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:13:34,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:13:34,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:13:34,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:13:34,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:13:34,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:13:34,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:13:34,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:13:34,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:13:34,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:13:34,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:13:34,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:13:34,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:13:34,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:13:34,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:13:34,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:13:34,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:13:34,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:13:34,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:13:34,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:13:34,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:13:34,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:13:34,762 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 18:13:34,807 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:13:34,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:13:34,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:13:34,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:13:34,810 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:13:34,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:13:34,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:13:34,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:13:34,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:13:34,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:13:34,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:13:34,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:13:34,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:13:34,814 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:13:34,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:13:34,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:13:34,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:13:34,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:13:34,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:13:34,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:13:34,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:13:34,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:13:34,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:13:34,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:13:34,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:13:34,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:13:34,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:13:34,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:13:34,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:13:34,817 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:13:35,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:13:35,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:13:35,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:13:35,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:13:35,276 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:13:35,277 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-24 18:13:35,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e49822b61/930fabb8a6e641ef9200802c20de8f77/FLAGa02a547ac [2020-09-24 18:13:35,890 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:13:35,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-24 18:13:35,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e49822b61/930fabb8a6e641ef9200802c20de8f77/FLAGa02a547ac [2020-09-24 18:13:36,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e49822b61/930fabb8a6e641ef9200802c20de8f77 [2020-09-24 18:13:36,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:13:36,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:13:36,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:13:36,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:13:36,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:13:36,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:13:36" (1/1) ... [2020-09-24 18:13:36,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b03ff29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:36, skipping insertion in model container [2020-09-24 18:13:36,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:13:36" (1/1) ... [2020-09-24 18:13:36,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:13:36,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:13:36,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:13:36,502 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:13:36,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:13:36,545 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:13:36,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:36 WrapperNode [2020-09-24 18:13:36,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:13:36,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:13:36,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:13:36,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:13:36,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:36" (1/1) ... [2020-09-24 18:13:36,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:36" (1/1) ... [2020-09-24 18:13:36,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:36" (1/1) ... [2020-09-24 18:13:36,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:36" (1/1) ... [2020-09-24 18:13:36,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:36" (1/1) ... [2020-09-24 18:13:36,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:36" (1/1) ... [2020-09-24 18:13:36,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:36" (1/1) ... [2020-09-24 18:13:36,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:13:36,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:13:36,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:13:36,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:13:36,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:36" (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 18:13:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:13:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:13:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 18:13:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 18:13:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:13:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:13:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:13:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 18:13:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 18:13:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:13:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:13:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:13:36,969 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:13:36,969 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:13:36,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:13:36 BoogieIcfgContainer [2020-09-24 18:13:36,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:13:36,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:13:36,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:13:36,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:13:36,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:13:36" (1/3) ... [2020-09-24 18:13:36,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baaca7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:13:36, skipping insertion in model container [2020-09-24 18:13:36,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:36" (2/3) ... [2020-09-24 18:13:36,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6baaca7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:13:36, skipping insertion in model container [2020-09-24 18:13:36,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:13:36" (3/3) ... [2020-09-24 18:13:36,986 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-09-24 18:13:37,003 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:13:37,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:13:37,041 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:13:37,076 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:13:37,076 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:13:37,076 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:13:37,077 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:13:37,077 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:13:37,078 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:13:37,078 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:13:37,078 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:13:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 18:13:37,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 18:13:37,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:37,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:37,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:37,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:37,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 18:13:37,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:37,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688427070] [2020-09-24 18:13:37,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:13:37,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:37,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 18:13:37,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:13:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:13:37,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:37,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:13:37,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:37,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:37,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:37,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:37,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:13:37,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:37,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:37,439 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 18:13:37,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688427070] [2020-09-24 18:13:37,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:37,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:13:37,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323334168] [2020-09-24 18:13:37,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:13:37,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:37,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:13:37,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:13:37,472 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 18:13:37,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:37,602 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 18:13:37,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:13:37,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 18:13:37,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:37,618 INFO L225 Difference]: With dead ends: 58 [2020-09-24 18:13:37,619 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:13:37,623 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 18:13:37,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:13:37,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 18:13:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:13:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 18:13:37,683 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 18:13:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:37,684 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 18:13:37,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:13:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 18:13:37,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 18:13:37,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:37,687 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 18:13:37,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:13:37,687 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:37,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:37,688 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 18:13:37,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:37,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490578451] [2020-09-24 18:13:37,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:13:37,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 18:13:37,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:37,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:37,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:37,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:13:37,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:37,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:37,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:37,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:37,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:37,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:37,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 18:13:37,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:37,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:37,903 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 18:13:37,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490578451] [2020-09-24 18:13:37,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:37,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:13:37,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941727579] [2020-09-24 18:13:37,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:13:37,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:37,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:13:37,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:13:37,908 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 18:13:37,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:37,977 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 18:13:37,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:13:37,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 18:13:37,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:37,980 INFO L225 Difference]: With dead ends: 50 [2020-09-24 18:13:37,980 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 18:13:37,981 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 18:13:37,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 18:13:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 18:13:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:13:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 18:13:37,991 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 18:13:37,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:37,992 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 18:13:37,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:13:37,992 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 18:13:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 18:13:37,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:37,994 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:37,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:13:37,995 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:37,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:37,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 18:13:37,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:37,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669009581] [2020-09-24 18:13:37,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:13:38,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:38,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-09-24 18:13:38,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:13:38,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:38,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:38,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:38,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:38,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:13:38,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:38,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:38,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:13:38,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 18:13:38,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:38,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:13:38,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:38,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:38,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:38,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:38,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:13:38,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:38,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:38,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:38,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:13:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:38,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:38,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:13:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:13:38,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669009581] [2020-09-24 18:13:38,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:38,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:38,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317451737] [2020-09-24 18:13:38,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:38,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:38,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:38,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:38,756 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-24 18:13:38,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:38,834 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 18:13:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:38,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 18:13:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:38,837 INFO L225 Difference]: With dead ends: 82 [2020-09-24 18:13:38,837 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 18:13:38,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 18:13:38,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 18:13:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 18:13:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 18:13:38,849 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 18:13:38,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:38,850 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 18:13:38,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 18:13:38,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:13:38,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:38,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:38,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:13:38,853 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:38,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:38,853 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 18:13:38,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:38,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105283473] [2020-09-24 18:13:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:13:39,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:39,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-24 18:13:39,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:13:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:39,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:39,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:39,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:39,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:39,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:39,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-24 18:13:39,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:13:39,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:39,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:39,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:39,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:13:39,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:39,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:39,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:39,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:13:39,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:13:39,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105283473] [2020-09-24 18:13:39,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:39,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:13:39,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432691488] [2020-09-24 18:13:39,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:13:39,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:39,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:13:39,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:39,654 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-24 18:13:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:39,802 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 18:13:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:13:39,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 18:13:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:39,805 INFO L225 Difference]: With dead ends: 56 [2020-09-24 18:13:39,805 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 18:13:39,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:13:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 18:13:39,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-24 18:13:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 18:13:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-24 18:13:39,815 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2020-09-24 18:13:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:39,816 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-24 18:13:39,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:13:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-24 18:13:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 18:13:39,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:39,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:39,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:13:39,818 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:39,819 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 18:13:39,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:39,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97896332] [2020-09-24 18:13:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:40,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 18:13:40,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-09-24 18:13:40,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:13:40,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:13:40,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:40,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:40,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:40,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:40,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:40,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:40,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:40,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:40,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:13:40,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:40,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 18:13:40,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:13:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:13:40,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:40,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:40,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:40,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:40,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:40,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:13:40,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:40,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:40,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:40,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:13:40,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:40,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:40,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:40,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:40,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:40,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:13:40,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:40,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:40,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:13:40,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97896332] [2020-09-24 18:13:40,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:40,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:40,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409103904] [2020-09-24 18:13:40,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:40,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:40,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:40,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:40,556 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 6 states. [2020-09-24 18:13:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:40,645 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2020-09-24 18:13:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:40,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 18:13:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:40,647 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:13:40,647 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:13:40,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:13:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:13:40,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 18:13:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 18:13:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-09-24 18:13:40,658 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 35 [2020-09-24 18:13:40,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:40,659 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-09-24 18:13:40,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:40,659 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-09-24 18:13:40,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 18:13:40,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:40,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:40,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:13:40,662 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:40,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:40,662 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-24 18:13:40,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:40,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253395130] [2020-09-24 18:13:40,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:40,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:41,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:45,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 18:13:45,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:13:45,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:13:45,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:13:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:45,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:45,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:45,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:45,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:45,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:45,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:45,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 18:13:46,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:46,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-09-24 18:13:46,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:46,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:13:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:46,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:46,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:13:46,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 18:13:46,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:13:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:46,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:46,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:13:46,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:46,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:46,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:46,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:46,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:13:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:46,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:46,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:46,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:13:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:13:46,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 18:13:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:46,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:13:46,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 18:13:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:46,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 18:13:46,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253395130] [2020-09-24 18:13:46,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:46,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:46,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811279742] [2020-09-24 18:13:46,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:46,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:46,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:46,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:46,823 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 6 states. [2020-09-24 18:13:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:46,919 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2020-09-24 18:13:46,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:46,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 18:13:46,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:46,921 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:13:46,921 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 18:13:46,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:46,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 18:13:46,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 18:13:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:13:46,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 18:13:46,931 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 51 [2020-09-24 18:13:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:46,932 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 18:13:46,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 18:13:46,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 18:13:46,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:46,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:46,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:13:46,934 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:46,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:46,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-09-24 18:13:46,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:46,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183925789] [2020-09-24 18:13:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:48,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 18:13:48,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-09-24 18:13:48,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:48,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:13:48,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 18:13:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:48,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:48,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:48,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:48,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:50,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:13:50,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:50,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1678 [2020-09-24 18:13:50,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:50,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:50,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:13:50,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:50,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:50,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:50,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:50,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:50,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:13:50,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:13:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:50,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:50,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:50,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:50,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:50,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:50,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:13:50,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:50,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:50,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:50,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:50,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:50,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:50,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:50,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:50,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:50,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:13:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:13:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:50,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:50,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:13:50,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:50,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:13:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:13:50,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183925789] [2020-09-24 18:13:50,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:50,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:13:50,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645216727] [2020-09-24 18:13:50,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:13:50,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:50,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:13:50,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:50,571 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 7 states. [2020-09-24 18:13:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:50,765 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-09-24 18:13:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:13:50,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 18:13:50,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:50,769 INFO L225 Difference]: With dead ends: 66 [2020-09-24 18:13:50,769 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 18:13:50,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:13:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 18:13:50,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-24 18:13:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:13:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 18:13:50,797 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 52 [2020-09-24 18:13:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:50,798 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 18:13:50,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:13:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 18:13:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 18:13:50,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:50,801 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:50,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:13:50,804 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:50,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:50,805 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 18:13:50,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:50,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357043683] [2020-09-24 18:13:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:51,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:51,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:52,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:55,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:55,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:55,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 18:13:55,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:13:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 18:13:55,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:13:55,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:55,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:13:55,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:55,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:55,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:55,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:55,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:55,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:55,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:55,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:55,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:55,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:55,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:59,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:14:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:14:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:14:00,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:14:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:14:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:00,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:00,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:01,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:01,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:01,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-24 18:14:01,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:01,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:01,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:14:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:01,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:01,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:01,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:01,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:01,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:14:01,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:14:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:01,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:01,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:01,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:01,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:01,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:14:01,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:01,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:01,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:01,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:01,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:01,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 18:14:01,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:14:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:01,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:01,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:01,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:14:01,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:01,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:01,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:01,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:01,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:01,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:01,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:01,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:01,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:14:01,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:01,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:01,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:01,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:01,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 18:14:01,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357043683] [2020-09-24 18:14:01,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:01,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 18:14:01,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882030256] [2020-09-24 18:14:01,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:14:01,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:01,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:14:01,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:14:01,640 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 10 states. [2020-09-24 18:14:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:01,848 INFO L93 Difference]: Finished difference Result 120 states and 159 transitions. [2020-09-24 18:14:01,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:14:01,848 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-24 18:14:01,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:01,850 INFO L225 Difference]: With dead ends: 120 [2020-09-24 18:14:01,850 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 18:14:01,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:14:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 18:14:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-24 18:14:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 18:14:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2020-09-24 18:14:01,861 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 69 [2020-09-24 18:14:01,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:01,862 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2020-09-24 18:14:01,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:14:01,862 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2020-09-24 18:14:01,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 18:14:01,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:01,864 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:01,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:14:01,864 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:01,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:01,865 INFO L82 PathProgramCache]: Analyzing trace with hash -271039366, now seen corresponding path program 1 times [2020-09-24 18:14:01,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:01,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994270247] [2020-09-24 18:14:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:06,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 18:14:06,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-24 18:14:06,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:14:06,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:06,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 18:14:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:14:06,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:06,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:06,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:06,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:06,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:06,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:14:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:06,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:11,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 18:14:11,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 18:14:11,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:14:11,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:14:11,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:14:11,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:11,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:12,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 18:14:12,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:14:12,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-09-24 18:14:12,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:14:12,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:14:12,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:12,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:12,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:13,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:13,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:13,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 18:14:13,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:13,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:13,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:13,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:14:13,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:13,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:13,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:13,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:13,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:13,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:14:13,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:13,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:13,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:13,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:13,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:13,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:13,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:13,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:14:13,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:13,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:13,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:13,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:13,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:13,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:13,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:13,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:13,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:14:13,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:13,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:13,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:14:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:13,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:18,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:14:18,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:14:18,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:14:18,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:18,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:14:18,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 18:14:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:18,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:18,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:21,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:21,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:14:21,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:14:21,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2777 [2020-09-24 18:14:21,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 18:14:21,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:21,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:21,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:21,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:21,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:21,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:14:21,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:14:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:21,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:21,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:21,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:21,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:21,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:21,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:21,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:21,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:21,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:21,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:21,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:21,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:21,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:21,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:21,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:14:21,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:21,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:21,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:21,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:14:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:21,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:21,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:21,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:21,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:14:21,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:21,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 61 proven. 38 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-09-24 18:14:21,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994270247] [2020-09-24 18:14:21,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:21,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:14:21,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493999557] [2020-09-24 18:14:21,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:14:21,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:21,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:14:21,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:14:21,114 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand 8 states. [2020-09-24 18:14:21,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:21,224 INFO L93 Difference]: Finished difference Result 144 states and 189 transitions. [2020-09-24 18:14:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:14:21,224 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-09-24 18:14:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:21,226 INFO L225 Difference]: With dead ends: 144 [2020-09-24 18:14:21,226 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 18:14:21,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:14:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 18:14:21,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2020-09-24 18:14:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 18:14:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-09-24 18:14:21,236 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 121 [2020-09-24 18:14:21,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:21,237 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-09-24 18:14:21,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:14:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-09-24 18:14:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 18:14:21,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:21,239 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2020-09-24 18:14:21,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:14:21,239 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:21,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:21,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1951493560, now seen corresponding path program 2 times [2020-09-24 18:14:21,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:21,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529543605] [2020-09-24 18:14:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:21,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:21,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking...