/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:39:38,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:39:38,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:39:38,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:39:38,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:39:38,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:39:38,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:39:38,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:39:38,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:39:38,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:39:38,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:39:38,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:39:38,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:39:38,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:39:38,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:39:38,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:39:38,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:39:38,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:39:38,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:39:38,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:39:38,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:39:38,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:39:38,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:39:38,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:39:38,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:39:38,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:39:38,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:39:38,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:39:38,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:39:38,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:39:38,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:39:38,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:39:38,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:39:38,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:39:38,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:39:38,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:39:38,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:39:38,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:39:38,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:39:38,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:39:38,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:39:38,563 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 [2020-10-13 10:39:38,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:39:38,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:39:38,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:39:38,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:39:38,605 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:39:38,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:39:38,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:39:38,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:39:38,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:39:38,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:39:38,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:39:38,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:39:38,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:39:38,608 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:39:38,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:39:38,608 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:39:38,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:39:38,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:39:38,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:39:38,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:39:38,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:39:38,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:39:38,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:39:38,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:39:38,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:39:38,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:39:38,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:39:38,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:39:38,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:39:38,611 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:39:38,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:39:38,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:39:38,926 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:39:38,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:39:38,928 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:39:38,929 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2020-10-13 10:39:38,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26ab39a8e/e4ec20961e574914aab2c8759e6e7fc7/FLAGb414b5271 [2020-10-13 10:39:39,579 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:39:39,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2020-10-13 10:39:39,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26ab39a8e/e4ec20961e574914aab2c8759e6e7fc7/FLAGb414b5271 [2020-10-13 10:39:39,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26ab39a8e/e4ec20961e574914aab2c8759e6e7fc7 [2020-10-13 10:39:39,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:39:39,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:39:39,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:39:39,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:39:39,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:39:39,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:39:39" (1/1) ... [2020-10-13 10:39:39,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118e5697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:39, skipping insertion in model container [2020-10-13 10:39:39,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:39:39" (1/1) ... [2020-10-13 10:39:39,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:39:39,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:39:40,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:39:40,404 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:39:40,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:39:40,532 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:39:40,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:40 WrapperNode [2020-10-13 10:39:40,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:39:40,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:39:40,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:39:40,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:39:40,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:40" (1/1) ... [2020-10-13 10:39:40,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:40" (1/1) ... [2020-10-13 10:39:40,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:40" (1/1) ... [2020-10-13 10:39:40,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:40" (1/1) ... [2020-10-13 10:39:40,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:40" (1/1) ... [2020-10-13 10:39:40,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:40" (1/1) ... [2020-10-13 10:39:40,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:40" (1/1) ... [2020-10-13 10:39:40,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:39:40,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:39:40,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:39:40,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:39:40,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:40" (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 [2020-10-13 10:39:40,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:39:40,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:39:40,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-13 10:39:40,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-13 10:39:40,671 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-13 10:39:40,671 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-13 10:39:40,672 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-13 10:39:40,672 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_last [2020-10-13 10:39:40,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:39:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:39:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-13 10:39:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-13 10:39:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:39:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:39:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:39:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:39:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:39:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:39:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:39:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:39:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:39:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:39:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:39:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:39:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:39:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:39:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:39:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:39:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:39:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:39:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:39:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:39:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:39:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:39:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:39:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:39:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:39:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:39:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:39:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:39:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:39:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:39:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:39:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:39:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:39:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:39:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:39:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:39:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:39:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:39:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:39:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:39:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:39:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:39:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:39:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:39:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:39:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:39:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:39:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:39:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:39:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:39:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:39:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:39:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:39:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:39:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:39:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:39:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:39:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:39:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:39:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:39:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:39:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:39:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:39:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:39:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:39:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:39:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:39:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:39:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:39:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:39:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:39:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:39:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:39:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:39:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:39:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:39:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:39:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:39:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:39:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:39:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:39:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:39:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:39:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:39:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:39:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:39:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:39:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:39:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:39:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:39:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:39:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:39:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:39:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:39:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:39:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:39:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:39:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-13 10:39:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-13 10:39:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:39:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:39:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:39:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-13 10:39:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_last [2020-10-13 10:39:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:39:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:39:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:39:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:39:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 10:39:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:39:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:39:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:39:41,052 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-13 10:39:41,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:39:41,238 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-13 10:39:41,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:39:41 BoogieIcfgContainer [2020-10-13 10:39:41,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:39:41,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:39:41,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:39:41,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:39:41,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:39:39" (1/3) ... [2020-10-13 10:39:41,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56df3c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:39:41, skipping insertion in model container [2020-10-13 10:39:41,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:39:40" (2/3) ... [2020-10-13 10:39:41,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56df3c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:39:41, skipping insertion in model container [2020-10-13 10:39:41,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:39:41" (3/3) ... [2020-10-13 10:39:41,251 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2020-10-13 10:39:41,261 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:39:41,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:39:41,283 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:39:41,306 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:39:41,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:39:41,307 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:39:41,307 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:39:41,307 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:39:41,307 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:39:41,307 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:39:41,308 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:39:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-13 10:39:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:39:41,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:39:41,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:39:41,335 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:39:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:39:41,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1597421219, now seen corresponding path program 1 times [2020-10-13 10:39:41,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:39:41,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129090825] [2020-10-13 10:39:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:39:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:41,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:41,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:41,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:39:41,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:39:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-13 10:39:41,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:41,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:41,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 10:39:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:41,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 10:39:41,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:39:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:41,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:41,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:41,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:39:41,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:39:41,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:41,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:41,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:39:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:41,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:41,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:41,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:39:41,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:39:41,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 10:39:41,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:41,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:41,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:41,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:41,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:41,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:41,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:41,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:39:41,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:41,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:39:42,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129090825] [2020-10-13 10:39:42,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:39:42,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:39:42,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059988281] [2020-10-13 10:39:42,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:39:42,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:39:42,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:39:42,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:39:42,037 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-10-13 10:39:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:39:42,217 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2020-10-13 10:39:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:39:42,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-13 10:39:42,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:39:42,229 INFO L225 Difference]: With dead ends: 71 [2020-10-13 10:39:42,229 INFO L226 Difference]: Without dead ends: 39 [2020-10-13 10:39:42,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:39:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-13 10:39:42,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-13 10:39:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 10:39:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-13 10:39:42,284 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 24 [2020-10-13 10:39:42,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:39:42,286 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-13 10:39:42,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:39:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-13 10:39:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:39:42,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:39:42,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:39:42,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:39:42,289 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:39:42,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:39:42,290 INFO L82 PathProgramCache]: Analyzing trace with hash 657162430, now seen corresponding path program 1 times [2020-10-13 10:39:42,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:39:42,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122694419] [2020-10-13 10:39:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:39:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:42,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:42,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:42,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:42,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:39:42,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:39:42,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-13 10:39:42,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:39:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:39:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:39:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:42,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:39:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:42,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:42,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:39:42,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:42,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:39:42,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:42,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:42,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:39:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:42,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:42,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:39:42,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 10:39:42,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:39:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:39:42,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:39:42,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:42,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:42,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:42,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:42,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:42,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:42,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:39:42,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:39:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:39:42,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:39:42,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122694419] [2020-10-13 10:39:42,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:39:42,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:39:42,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445188313] [2020-10-13 10:39:42,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:39:42,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:39:42,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:39:42,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:39:42,884 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 7 states. [2020-10-13 10:39:43,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:39:43,151 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-13 10:39:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:39:43,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-13 10:39:43,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:39:43,154 INFO L225 Difference]: With dead ends: 63 [2020-10-13 10:39:43,154 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 10:39:43,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:39:43,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 10:39:43,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-13 10:39:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 10:39:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-13 10:39:43,166 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 24 [2020-10-13 10:39:43,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:39:43,166 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-13 10:39:43,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:39:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-13 10:39:43,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:39:43,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:39:43,168 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] [2020-10-13 10:39:43,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:39:43,168 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:39:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:39:43,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1280322166, now seen corresponding path program 1 times [2020-10-13 10:39:43,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:39:43,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64916325] [2020-10-13 10:39:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:39:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:43,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:43,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:43,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:43,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:39:43,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:39:43,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-13 10:39:43,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:39:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:39:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:39:43,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:43,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:39:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:43,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:43,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:39:43,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:43,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:39:43,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:43,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:43,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:39:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:43,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:43,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:39:43,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:43,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 10:39:43,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:43,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:39:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:39:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:43,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:43,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:43,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:43,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:43,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 10:39:43,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:39:43,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:39:43,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:39:43,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:39:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:43,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:43,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:43,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 10:39:43,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:39:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:39:43,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:39:43,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64916325] [2020-10-13 10:39:43,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:39:43,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:39:43,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153050887] [2020-10-13 10:39:43,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:39:43,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:39:43,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:39:43,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:39:43,965 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 8 states. [2020-10-13 10:39:44,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:39:44,343 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-10-13 10:39:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:39:44,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-13 10:39:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:39:44,345 INFO L225 Difference]: With dead ends: 49 [2020-10-13 10:39:44,345 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 10:39:44,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:39:44,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 10:39:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-13 10:39:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 10:39:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-13 10:39:44,364 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2020-10-13 10:39:44,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:39:44,365 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-13 10:39:44,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:39:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-13 10:39:44,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 10:39:44,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:39:44,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:39:44,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:39:44,369 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:39:44,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:39:44,369 INFO L82 PathProgramCache]: Analyzing trace with hash 410004661, now seen corresponding path program 1 times [2020-10-13 10:39:44,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:39:44,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598609859] [2020-10-13 10:39:44,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:39:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:44,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:44,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:46,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:49,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:49,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:39:49,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:39:49,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4755 [2020-10-13 10:39:49,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:49,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:39:49,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 10:39:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:39:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:49,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:39:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:49,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:49,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:49,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:39:49,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:49,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:39:49,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:49,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:49,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:39:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:49,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:49,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:49,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:39:49,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:39:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:49,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:49,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:49,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:49,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:49,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:49,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:39:49,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:49,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:49,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:49,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:49,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:49,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:39:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:49,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:49,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:49,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:49,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:39:49,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:49,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:39:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:49,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:49,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:49,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:39:49,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:49,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:39:49,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:49,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:39:49,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:39:49,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 10:39:49,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598609859] [2020-10-13 10:39:49,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:39:49,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 10:39:49,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506789152] [2020-10-13 10:39:49,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:39:49,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:39:49,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:39:49,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:39:49,394 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 9 states. [2020-10-13 10:39:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:39:49,813 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-10-13 10:39:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:39:49,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-13 10:39:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:39:49,814 INFO L225 Difference]: With dead ends: 58 [2020-10-13 10:39:49,815 INFO L226 Difference]: Without dead ends: 41 [2020-10-13 10:39:49,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:39:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-13 10:39:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-13 10:39:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 10:39:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 10:39:49,823 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 42 [2020-10-13 10:39:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:39:49,823 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 10:39:49,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:39:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 10:39:49,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:39:49,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:39:49,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:39:49,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:39:49,826 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:39:49,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:39:49,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1436962146, now seen corresponding path program 1 times [2020-10-13 10:39:49,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:39:49,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711890933] [2020-10-13 10:39:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:39:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:49,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:50,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:50,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:54,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:54,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 10:39:54,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:39:54,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 10:39:54,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:54,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:39:54,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 10:39:54,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:39:54,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:54,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:39:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:54,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:54,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:54,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:39:54,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:54,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:39:54,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:54,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:54,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:39:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:54,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:54,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:54,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:39:54,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:54,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:39:54,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:54,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:54,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:54,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:54,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:54,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:54,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:54,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:54,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:54,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:54,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:39:54,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:54,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:54,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:54,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:39:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:54,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:54,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:54,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:54,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:39:54,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:54,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:54,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:54,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:54,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:54,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:39:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:54,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:54,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:54,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:39:54,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:54,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:39:54,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:39:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:39:54,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:39:54,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 10:39:54,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711890933] [2020-10-13 10:39:54,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:39:54,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:39:54,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203424802] [2020-10-13 10:39:54,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:39:54,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:39:54,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:39:55,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:39:55,000 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 10:39:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:39:55,177 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-13 10:39:55,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:39:55,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-10-13 10:39:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:39:55,179 INFO L225 Difference]: With dead ends: 62 [2020-10-13 10:39:55,179 INFO L226 Difference]: Without dead ends: 43 [2020-10-13 10:39:55,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:39:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-13 10:39:55,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-13 10:39:55,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 10:39:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 10:39:55,191 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 45 [2020-10-13 10:39:55,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:39:55,192 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 10:39:55,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:39:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 10:39:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:39:55,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:39:55,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:39:55,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:39:55,195 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:39:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:39:55,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1302090595, now seen corresponding path program 1 times [2020-10-13 10:39:55,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:39:55,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898552608] [2020-10-13 10:39:55,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:39:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:55,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:55,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:55,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:55,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:39:55,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:39:55,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-13 10:39:55,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:55,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:39:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:39:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:39:55,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:55,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:39:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:55,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:55,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:39:55,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:55,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:39:55,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:55,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:39:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:55,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:55,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:55,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:39:55,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 10:39:55,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:39:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:39:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:55,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:55,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:55,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:55,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:55,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:39:55,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:39:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:39:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:55,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:39:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:55,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:55,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:55,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:55,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:39:55,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:39:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:39:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:55,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:39:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:55,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:55,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:55,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:39:55,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:55,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:39:55,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:39:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:39:55,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 10:39:55,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898552608] [2020-10-13 10:39:55,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:39:55,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:39:55,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368039381] [2020-10-13 10:39:55,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:39:55,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:39:55,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:39:55,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:39:55,705 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 10 states. [2020-10-13 10:39:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:39:55,990 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-10-13 10:39:55,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:39:55,990 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-13 10:39:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:39:55,991 INFO L225 Difference]: With dead ends: 52 [2020-10-13 10:39:55,991 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 10:39:55,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:39:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 10:39:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-13 10:39:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 10:39:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-13 10:39:55,999 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 47 [2020-10-13 10:39:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:39:56,000 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-13 10:39:56,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:39:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-13 10:39:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 10:39:56,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:39:56,001 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1] [2020-10-13 10:39:56,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:39:56,001 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:39:56,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:39:56,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1450863914, now seen corresponding path program 2 times [2020-10-13 10:39:56,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:39:56,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410112709] [2020-10-13 10:39:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:39:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:57,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:57,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 10:39:57,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:39:57,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1174 [2020-10-13 10:39:57,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:57,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:39:57,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 10:39:57,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 10:39:57,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:57,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:39:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:57,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:57,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:39:57,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:57,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:39:57,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:57,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:39:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:57,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:57,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:39:57,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:57,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 10:39:57,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:57,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:57,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:39:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:57,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:57,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:57,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:57,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:39:57,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:57,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:57,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:39:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:57,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:57,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:57,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:39:57,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:57,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:39:57,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:39:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:39:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:39:57,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:39:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:57,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:57,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:39:57,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:39:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 10:39:57,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:39:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:39:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:39:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:57,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 10:39:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:57,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:57,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:57,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:57,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:39:57,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:39:57,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:39:57,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 10:39:57,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:39:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:39:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:39:57,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:39:57,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:39:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 10:39:57,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410112709] [2020-10-13 10:39:57,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:39:57,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:39:57,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150273818] [2020-10-13 10:39:57,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:39:57,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:39:57,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:39:57,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:39:57,874 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 12 states. [2020-10-13 10:39:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:39:58,404 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2020-10-13 10:39:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:39:58,405 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-13 10:39:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:39:58,407 INFO L225 Difference]: With dead ends: 82 [2020-10-13 10:39:58,407 INFO L226 Difference]: Without dead ends: 57 [2020-10-13 10:39:58,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:39:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-13 10:39:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-10-13 10:39:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 10:39:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-13 10:39:58,416 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 62 [2020-10-13 10:39:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:39:58,417 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-13 10:39:58,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:39:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-13 10:39:58,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:39:58,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:39:58,419 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1] [2020-10-13 10:39:58,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:39:58,419 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:39:58,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:39:58,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1060298193, now seen corresponding path program 1 times [2020-10-13 10:39:58,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:39:58,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450931343] [2020-10-13 10:39:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:39:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:39:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:58,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:58,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:59,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:39:59,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:00,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:00,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:00,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:01,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:01,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:01,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:03,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:03,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 10:40:03,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 10:40:03,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 10:40:03,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:03,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:40:03,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 10:40:03,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:40:03,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:03,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:03,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:03,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:40:03,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:03,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:03,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:03,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:03,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:03,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:40:03,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:03,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:40:03,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:03,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:03,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:03,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:03,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:40:03,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:03,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:40:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:03,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:03,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:03,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:40:03,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:03,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:03,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:40:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:03,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:03,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:03,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:03,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:03,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:40:03,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:40:03,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 10:40:03,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:40:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:40:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:40:03,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:40:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:03,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:03,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:03,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:40:03,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:03,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:40:03,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:40:03,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:03,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 10:40:03,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450931343] [2020-10-13 10:40:03,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:40:03,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:40:03,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129123460] [2020-10-13 10:40:03,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:40:03,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:03,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:40:03,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:40:03,763 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 9 states. [2020-10-13 10:40:04,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:04,111 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2020-10-13 10:40:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:40:04,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-13 10:40:04,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:04,114 INFO L225 Difference]: With dead ends: 88 [2020-10-13 10:40:04,114 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 10:40:04,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:40:04,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 10:40:04,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 10:40:04,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 10:40:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-13 10:40:04,131 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 64 [2020-10-13 10:40:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:04,132 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-13 10:40:04,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:40:04,132 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-13 10:40:04,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 10:40:04,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:04,136 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 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, 1, 1, 1] [2020-10-13 10:40:04,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:40:04,136 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:04,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:04,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1714828524, now seen corresponding path program 2 times [2020-10-13 10:40:04,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:04,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441761549] [2020-10-13 10:40:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:04,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:04,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:04,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:05,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:06,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:06,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:06,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:09,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 10:40:09,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 10:40:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 10:40:09,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:40:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:40:09,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:40:09,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:09,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:09,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:09,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:09,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:40:09,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:09,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:09,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:09,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:40:09,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:09,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:09,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:40:09,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 10:40:09,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:40:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:40:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:40:09,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:09,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:09,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:09,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:09,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:40:09,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:09,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:40:09,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:40:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:09,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:09,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:09,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:40:09,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:09,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:40:09,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:09,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:40:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:40:09,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:40:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:10,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:10,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 10:40:10,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:40:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-10-13 10:40:10,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:40:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:40:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:40:10,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:10,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 10:40:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:10,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:10,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:40:10,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:10,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:40:10,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:10,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:40:10,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:10,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 10:40:10,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441761549] [2020-10-13 10:40:10,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:40:10,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:40:10,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042176206] [2020-10-13 10:40:10,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:40:10,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:10,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:40:10,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:40:10,581 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 16 states. [2020-10-13 10:40:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:11,561 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2020-10-13 10:40:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:40:11,562 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-13 10:40:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:11,565 INFO L225 Difference]: With dead ends: 108 [2020-10-13 10:40:11,565 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 10:40:11,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:40:11,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 10:40:11,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 10:40:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 10:40:11,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-10-13 10:40:11,578 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 66 [2020-10-13 10:40:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:11,578 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-10-13 10:40:11,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:40:11,579 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-10-13 10:40:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 10:40:11,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:11,580 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 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, 1, 1] [2020-10-13 10:40:11,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:40:11,581 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:11,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:11,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1841081753, now seen corresponding path program 3 times [2020-10-13 10:40:11,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:11,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919981373] [2020-10-13 10:40:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:11,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:11,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:12,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:12,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:12,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:15,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:15,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:15,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:16,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:16,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 10:40:16,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 10:40:16,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 10:40:16,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:40:16,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 10:40:16,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:40:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:16,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:16,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:16,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:16,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:16,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:16,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:40:16,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:16,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:16,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:16,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:16,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:16,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:16,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:40:16,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:16,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:40:16,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:16,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:16,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:16,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:16,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:16,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:16,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:16,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:16,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:16,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:16,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:40:16,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:16,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:16,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:16,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:40:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:16,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:16,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:16,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:16,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:16,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:40:16,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:16,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:16,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:16,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:16,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:16,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:40:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:16,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:16,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:16,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:16,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:16,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:16,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:40:16,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:40:16,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 10:40:16,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:40:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:40:16,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:40:16,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:16,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:40:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:16,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:16,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:40:16,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:16,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:40:16,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:40:16,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:16,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 10:40:16,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919981373] [2020-10-13 10:40:16,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:40:16,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:40:16,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481852118] [2020-10-13 10:40:16,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:40:16,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:16,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:40:16,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:40:16,974 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 11 states. [2020-10-13 10:40:17,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:17,536 INFO L93 Difference]: Finished difference Result 123 states and 146 transitions. [2020-10-13 10:40:17,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:40:17,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-13 10:40:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:17,539 INFO L225 Difference]: With dead ends: 123 [2020-10-13 10:40:17,539 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 10:40:17,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:40:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 10:40:17,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-10-13 10:40:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 10:40:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-10-13 10:40:17,554 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 68 [2020-10-13 10:40:17,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:17,555 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-10-13 10:40:17,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:40:17,555 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-10-13 10:40:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 10:40:17,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:17,557 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 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, 1, 1] [2020-10-13 10:40:17,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:40:17,557 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1262461954, now seen corresponding path program 4 times [2020-10-13 10:40:17,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:17,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769159627] [2020-10-13 10:40:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:17,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:17,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:18,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:18,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:18,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:19,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:19,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:20,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:20,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:20,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:20,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:20,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:22,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:22,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 10:40:22,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 10:40:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 10:40:22,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:40:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:40:22,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:40:22,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:22,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:22,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:22,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:22,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:22,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:40:22,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:22,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:22,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:22,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:22,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:40:22,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 10:40:22,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:40:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:40:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:22,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:22,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:22,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:22,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:22,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:40:22,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:22,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:40:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:22,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:22,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:22,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:22,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:40:22,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:40:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:22,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:40:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:22,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:40:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:22,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:23,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:23,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:40:23,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:40:23,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-13 10:40:23,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:40:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:40:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:40:23,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:23,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 10:40:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:23,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:23,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:23,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:40:23,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:40:23,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:40:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 10:40:23,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769159627] [2020-10-13 10:40:23,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:40:23,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:40:23,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218480472] [2020-10-13 10:40:23,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:40:23,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:23,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:40:23,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:40:23,369 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 17 states. [2020-10-13 10:40:24,206 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-13 10:40:24,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:24,381 INFO L93 Difference]: Finished difference Result 134 states and 159 transitions. [2020-10-13 10:40:24,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:40:24,382 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-13 10:40:24,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:24,384 INFO L225 Difference]: With dead ends: 134 [2020-10-13 10:40:24,384 INFO L226 Difference]: Without dead ends: 87 [2020-10-13 10:40:24,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:40:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-13 10:40:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-10-13 10:40:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 10:40:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2020-10-13 10:40:24,399 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 70 [2020-10-13 10:40:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:24,399 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 98 transitions. [2020-10-13 10:40:24,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:40:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2020-10-13 10:40:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:40:24,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:24,401 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 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, 1, 1] [2020-10-13 10:40:24,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:40:24,401 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:24,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:24,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1521308669, now seen corresponding path program 5 times [2020-10-13 10:40:24,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:24,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145496849] [2020-10-13 10:40:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:24,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:24,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:25,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:25,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:25,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:25,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:26,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:29,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 10:40:29,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 10:40:29,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 10:40:29,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:40:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 10:40:29,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:40:29,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:29,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:29,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:29,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:40:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:29,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:29,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:29,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:40:29,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:29,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:40:29,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:29,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:29,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:29,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:40:29,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:29,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:29,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:29,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:40:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:29,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:29,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:29,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:40:29,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:29,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:29,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:40:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:29,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:29,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:40:29,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 10:40:29,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-13 10:40:29,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:40:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:40:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:40:29,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:29,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:40:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:29,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:29,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:29,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:40:29,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:29,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:40:29,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:29,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:40:29,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:29,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 9 proven. 47 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 10:40:29,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145496849] [2020-10-13 10:40:29,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:40:29,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:40:29,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176197496] [2020-10-13 10:40:29,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:40:29,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:29,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:40:29,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:40:29,969 INFO L87 Difference]: Start difference. First operand 83 states and 98 transitions. Second operand 13 states. [2020-10-13 10:40:30,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:30,883 INFO L93 Difference]: Finished difference Result 148 states and 178 transitions. [2020-10-13 10:40:30,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:40:30,883 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-10-13 10:40:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:30,885 INFO L225 Difference]: With dead ends: 148 [2020-10-13 10:40:30,885 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 10:40:30,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:40:30,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 10:40:30,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2020-10-13 10:40:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 10:40:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2020-10-13 10:40:30,909 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 72 [2020-10-13 10:40:30,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:30,909 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2020-10-13 10:40:30,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:40:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2020-10-13 10:40:30,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 10:40:30,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:30,911 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 10:40:30,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:40:30,912 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:30,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:30,912 INFO L82 PathProgramCache]: Analyzing trace with hash -679528284, now seen corresponding path program 6 times [2020-10-13 10:40:30,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:30,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863265729] [2020-10-13 10:40:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:31,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:31,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:31,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 10:40:31,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:40:31,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-13 10:40:31,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:31,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:40:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:40:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:40:31,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:31,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:31,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:31,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:31,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:40:31,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:31,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:31,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:31,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:31,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:40:31,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:31,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 10:40:31,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:40:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:40:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 10:40:31,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:31,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:31,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:31,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:31,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:31,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:40:31,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:40:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:40:31,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:31,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:40:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:31,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:31,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:31,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:31,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:40:31,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:40:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:40:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:31,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:40:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:31,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:31,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:31,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:31,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:31,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:40:31,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:40:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:40:31,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:40:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:31,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:31,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:31,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 10:40:31,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:31,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:40:31,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:31,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 10:40:31,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:31,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:31,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:40:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:31,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:31,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:31,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:40:31,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:31,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:40:31,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:40:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-13 10:40:31,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863265729] [2020-10-13 10:40:31,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:40:31,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:40:31,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106606696] [2020-10-13 10:40:31,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:40:31,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:31,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:40:31,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:40:31,362 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand 9 states. [2020-10-13 10:40:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:31,662 INFO L93 Difference]: Finished difference Result 150 states and 180 transitions. [2020-10-13 10:40:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:40:31,663 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 74 [2020-10-13 10:40:31,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:31,665 INFO L225 Difference]: With dead ends: 150 [2020-10-13 10:40:31,665 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 10:40:31,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:40:31,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 10:40:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-13 10:40:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-13 10:40:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2020-10-13 10:40:31,701 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 74 [2020-10-13 10:40:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:31,701 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2020-10-13 10:40:31,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:40:31,702 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2020-10-13 10:40:31,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 10:40:31,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:31,704 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 3, 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, 1, 1] [2020-10-13 10:40:31,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:40:31,704 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:31,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:31,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1281269736, now seen corresponding path program 7 times [2020-10-13 10:40:31,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:31,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022665459] [2020-10-13 10:40:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:31,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:31,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:31,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:32,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:32,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:33,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:34,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:35,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:36,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:36,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 10:40:36,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 10:40:36,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 10:40:36,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:40:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:40:36,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:40:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:36,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:36,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:36,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:36,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:36,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:40:36,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:36,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:36,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:36,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:36,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:36,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:36,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:36,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:40:36,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 10:40:36,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:40:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:36,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:40:36,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:36,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:36,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:36,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:36,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:36,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:36,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:40:36,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:36,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:36,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:36,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:36,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:36,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:40:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:36,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:36,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:36,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:36,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:40:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:40:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:40:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:40:36,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:40:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:37,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:37,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:38,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:40,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:40,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:40:40,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 10:40:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3672 [2020-10-13 10:40:40,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:40:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:40:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:40:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:41,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:40:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:41,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:41,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:40:41,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:41,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:40:41,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:40:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:41,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 10:40:41,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022665459] [2020-10-13 10:40:41,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:40:41,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:40:41,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661594725] [2020-10-13 10:40:41,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:40:41,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:41,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:40:41,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:40:41,188 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand 18 states. [2020-10-13 10:40:42,024 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2020-10-13 10:40:42,308 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-13 10:40:42,711 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 99 [2020-10-13 10:40:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:43,017 INFO L93 Difference]: Finished difference Result 167 states and 197 transitions. [2020-10-13 10:40:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:40:43,020 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 74 [2020-10-13 10:40:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:43,021 INFO L225 Difference]: With dead ends: 167 [2020-10-13 10:40:43,021 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 10:40:43,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:40:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 10:40:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 90. [2020-10-13 10:40:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 10:40:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2020-10-13 10:40:43,032 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 74 [2020-10-13 10:40:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:43,033 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2020-10-13 10:40:43,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:40:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2020-10-13 10:40:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 10:40:43,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:43,034 INFO L422 BasicCegarLoop]: trace histogram [8, 6, 5, 3, 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, 1, 1] [2020-10-13 10:40:43,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:40:43,035 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:43,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:43,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1614622349, now seen corresponding path program 8 times [2020-10-13 10:40:43,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:43,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026164932] [2020-10-13 10:40:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:43,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:43,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:43,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:43,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:43,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:45,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:45,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:45,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:45,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:45,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:45,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:46,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:46,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:46,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:47,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:48,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 10:40:48,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 10:40:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 10:40:48,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:40:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 10:40:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:40:48,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:48,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:48,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:48,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:48,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:48,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:40:48,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:48,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:48,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:48,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:48,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:48,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:48,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:48,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:40:48,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:48,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:40:48,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:48,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:48,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:48,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:40:48,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:48,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:48,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:40:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:48,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:48,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:48,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:40:48,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:48,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:40:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:48,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:48,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:40:48,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 10:40:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-13 10:40:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:40:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:40:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:40:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:49,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 10:40:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:49,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:49,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:40:49,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:49,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:40:49,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:40:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:49,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 3 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 10:40:49,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026164932] [2020-10-13 10:40:49,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:40:49,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:40:49,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374011357] [2020-10-13 10:40:49,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:40:49,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:49,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:40:49,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:40:49,231 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand 19 states. [2020-10-13 10:40:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:51,305 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2020-10-13 10:40:51,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:40:51,309 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 76 [2020-10-13 10:40:51,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:51,310 INFO L225 Difference]: With dead ends: 186 [2020-10-13 10:40:51,311 INFO L226 Difference]: Without dead ends: 121 [2020-10-13 10:40:51,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=301, Invalid=1339, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 10:40:51,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-13 10:40:51,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 102. [2020-10-13 10:40:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 10:40:51,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2020-10-13 10:40:51,325 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 76 [2020-10-13 10:40:51,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:51,325 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2020-10-13 10:40:51,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:40:51,325 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2020-10-13 10:40:51,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 10:40:51,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:51,326 INFO L422 BasicCegarLoop]: trace histogram [8, 6, 6, 4, 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, 1, 1] [2020-10-13 10:40:51,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:40:51,327 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:51,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:51,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1692735186, now seen corresponding path program 9 times [2020-10-13 10:40:51,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:51,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077935941] [2020-10-13 10:40:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:51,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:51,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:52,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:53,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:53,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:53,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:53,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:55,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:56,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:56,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:56,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:40:56,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 10:40:56,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 10:40:56,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:56,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:40:56,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:40:56,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:40:56,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:56,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:40:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:56,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:56,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:56,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:40:56,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:56,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:40:56,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:56,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:56,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:56,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:56,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:56,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:40:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:56,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:56,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:40:56,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:56,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 10:40:56,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:56,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:40:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:40:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:56,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:40:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:56,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:56,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:56,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:40:56,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:56,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:56,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:40:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:56,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:56,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:40:56,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:56,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:40:56,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:40:56,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:40:56,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:40:56,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:56,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:40:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:56,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:57,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:57,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:57,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:40:57,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:40:57,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-10-13 10:40:57,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:57,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:40:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:40:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:40:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:57,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 10:40:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:57,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:57,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:40:57,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:40:57,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:40:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:40:57,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:40:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:40:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:40:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:40:57,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:40:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 7 proven. 74 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 10:40:57,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077935941] [2020-10-13 10:40:57,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:40:57,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:40:57,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329756223] [2020-10-13 10:40:57,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:40:57,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:40:57,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:40:57,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:40:57,943 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand 19 states. [2020-10-13 10:40:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:40:59,713 INFO L93 Difference]: Finished difference Result 197 states and 235 transitions. [2020-10-13 10:40:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:40:59,714 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2020-10-13 10:40:59,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:40:59,716 INFO L225 Difference]: With dead ends: 197 [2020-10-13 10:40:59,716 INFO L226 Difference]: Without dead ends: 120 [2020-10-13 10:40:59,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=142, Invalid=850, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:40:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-13 10:40:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2020-10-13 10:40:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 10:40:59,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2020-10-13 10:40:59,728 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 78 [2020-10-13 10:40:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:40:59,728 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2020-10-13 10:40:59,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:40:59,729 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2020-10-13 10:40:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 10:40:59,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:40:59,730 INFO L422 BasicCegarLoop]: trace histogram [9, 7, 5, 3, 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, 1, 1] [2020-10-13 10:40:59,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:40:59,730 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:40:59,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:40:59,731 INFO L82 PathProgramCache]: Analyzing trace with hash 156063758, now seen corresponding path program 10 times [2020-10-13 10:40:59,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:40:59,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135799783] [2020-10-13 10:40:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:40:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:40:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:59,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:40:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:00,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:00,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:00,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:00,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:00,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:00,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:00,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:00,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:00,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:01,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:02,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:02,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:02,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:03,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:03,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:04,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:41:04,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-13 10:41:04,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 10:41:04,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:04,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:41:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 10:41:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:41:04,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:04,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:41:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:04,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:04,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:41:04,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:04,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:41:04,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:04,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:04,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:41:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:04,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:04,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:41:04,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:04,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:41:04,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:04,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:04,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:04,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:41:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:04,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:04,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:41:04,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:41:04,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:41:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:04,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:41:04,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:04,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:41:04,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:04,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:04,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:04,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:41:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:05,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:05,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:41:05,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 10:41:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-13 10:41:05,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:41:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:41:05,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:41:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 10:41:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:05,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:05,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:05,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:41:05,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:05,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:41:05,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:41:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:05,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 94 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:41:05,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135799783] [2020-10-13 10:41:05,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:41:05,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:41:05,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17496043] [2020-10-13 10:41:05,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:41:05,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:41:05,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:41:05,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:41:05,781 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand 19 states. [2020-10-13 10:41:07,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:41:07,400 INFO L93 Difference]: Finished difference Result 194 states and 234 transitions. [2020-10-13 10:41:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:41:07,401 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2020-10-13 10:41:07,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:41:07,402 INFO L225 Difference]: With dead ends: 194 [2020-10-13 10:41:07,402 INFO L226 Difference]: Without dead ends: 117 [2020-10-13 10:41:07,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:41:07,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-13 10:41:07,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 104. [2020-10-13 10:41:07,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-13 10:41:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2020-10-13 10:41:07,415 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 78 [2020-10-13 10:41:07,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:41:07,415 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2020-10-13 10:41:07,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:41:07,416 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2020-10-13 10:41:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:41:07,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:41:07,417 INFO L422 BasicCegarLoop]: trace histogram [9, 7, 6, 4, 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, 1, 1] [2020-10-13 10:41:07,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:41:07,417 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:41:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:41:07,417 INFO L82 PathProgramCache]: Analyzing trace with hash -870435575, now seen corresponding path program 11 times [2020-10-13 10:41:07,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:41:07,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081854694] [2020-10-13 10:41:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:41:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:07,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:07,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:07,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:08,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:08,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:08,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:09,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:10,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:10,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:10,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:10,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:10,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:11,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:11,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:12,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 10:41:12,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-13 10:41:12,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 10:41:12,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:41:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:41:12,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:41:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:12,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:41:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:12,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:12,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:41:12,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:12,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:41:12,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:12,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:12,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:12,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:12,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:41:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:12,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:41:12,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 10:41:12,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:41:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:41:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:41:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:12,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:12,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:41:12,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:12,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:41:12,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:12,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:12,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:41:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:12,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:41:12,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:12,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:41:12,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:41:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:41:12,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:12,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:41:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:12,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:13,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:13,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:13,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:13,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:13,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:17,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:17,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:41:17,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-13 10:41:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 10:41:17,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:41:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:41:17,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:41:17,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 10:41:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:18,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:18,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:41:18,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:41:18,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:41:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 3 proven. 106 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 10:41:18,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081854694] [2020-10-13 10:41:18,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:41:18,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 10:41:18,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367142057] [2020-10-13 10:41:18,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 10:41:18,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:41:18,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 10:41:18,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:41:18,306 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand 26 states. [2020-10-13 10:41:20,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:41:20,843 INFO L93 Difference]: Finished difference Result 199 states and 239 transitions. [2020-10-13 10:41:20,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:41:20,843 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 80 [2020-10-13 10:41:20,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:41:20,845 INFO L225 Difference]: With dead ends: 199 [2020-10-13 10:41:20,845 INFO L226 Difference]: Without dead ends: 120 [2020-10-13 10:41:20,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=219, Invalid=1673, Unknown=0, NotChecked=0, Total=1892 [2020-10-13 10:41:20,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-13 10:41:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2020-10-13 10:41:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-13 10:41:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2020-10-13 10:41:20,856 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 80 [2020-10-13 10:41:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:41:20,856 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2020-10-13 10:41:20,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 10:41:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2020-10-13 10:41:20,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 10:41:20,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:41:20,858 INFO L422 BasicCegarLoop]: trace histogram [9, 7, 7, 5, 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, 1, 1] [2020-10-13 10:41:20,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:41:20,858 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:41:20,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:41:20,858 INFO L82 PathProgramCache]: Analyzing trace with hash 506183492, now seen corresponding path program 12 times [2020-10-13 10:41:20,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:41:20,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643682670] [2020-10-13 10:41:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:41:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:20,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:20,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:21,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:21,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:21,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:21,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:21,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:21,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:21,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:22,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:23,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:23,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:25,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:25,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 10:41:25,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 10:41:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 10:41:25,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:41:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:41:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:41:25,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:25,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:41:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:25,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:25,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:41:25,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:25,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:41:25,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:25,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:41:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:25,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:26,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:41:26,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:26,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 10:41:26,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:41:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:26,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:41:26,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:26,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:41:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:26,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:26,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:41:26,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:26,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:41:26,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:26,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:41:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:26,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:41:26,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:26,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:41:26,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:41:26,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:26,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:41:26,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:26,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:41:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:31,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:31,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:41:31,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 10:41:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 10:41:31,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:31,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:41:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:41:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:41:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:31,838 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-13 10:41:32,017 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-13 10:41:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:41:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:32,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:32,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:32,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:41:32,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:32,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:41:32,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:41:32,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:32,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 9 proven. 76 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-13 10:41:32,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643682670] [2020-10-13 10:41:32,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:41:32,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:41:32,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122381273] [2020-10-13 10:41:32,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:41:32,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:41:32,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:41:32,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:41:32,202 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand 22 states. [2020-10-13 10:41:33,718 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-13 10:41:33,957 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 114 [2020-10-13 10:41:34,230 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2020-10-13 10:41:34,407 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2020-10-13 10:41:34,717 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-10-13 10:41:34,976 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 127 [2020-10-13 10:41:35,276 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 132 [2020-10-13 10:41:35,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:41:35,375 INFO L93 Difference]: Finished difference Result 211 states and 254 transitions. [2020-10-13 10:41:35,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:41:35,381 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2020-10-13 10:41:35,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:41:35,382 INFO L225 Difference]: With dead ends: 211 [2020-10-13 10:41:35,382 INFO L226 Difference]: Without dead ends: 130 [2020-10-13 10:41:35,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=220, Invalid=1262, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 10:41:35,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-13 10:41:35,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 108. [2020-10-13 10:41:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-13 10:41:35,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2020-10-13 10:41:35,396 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 82 [2020-10-13 10:41:35,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:41:35,396 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2020-10-13 10:41:35,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 10:41:35,397 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2020-10-13 10:41:35,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 10:41:35,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:41:35,398 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 7, 6, 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, 1, 1] [2020-10-13 10:41:35,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:41:35,398 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:41:35,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:41:35,399 INFO L82 PathProgramCache]: Analyzing trace with hash 587179711, now seen corresponding path program 13 times [2020-10-13 10:41:35,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:41:35,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886735042] [2020-10-13 10:41:35,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:41:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:35,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:35,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:35,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:35,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:36,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:37,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:37,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:37,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:37,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:38,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:38,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:39,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:39,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:39,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:40,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 10:41:40,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-13 10:41:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 10:41:40,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:41:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:41:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:41:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:40,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:41:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:40,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:40,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:41:40,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:40,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:41:40,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:40,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:40,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:40,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:40,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:41:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:40,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:41:40,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:40,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 10:41:40,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:41:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:40,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:41:40,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:41:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:40,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:41:40,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:40,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:41:40,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:40,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:41:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:40,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:40,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:41:40,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:40,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:41:40,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:41:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:41:40,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:40,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:41:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:42,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:45,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:45,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:41:45,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-13 10:41:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 10:41:45,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:45,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:41:45,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:41:45,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:41:45,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:46,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 10:41:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:46,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:46,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:41:46,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:41:46,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:41:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 15 proven. 120 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 10:41:46,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886735042] [2020-10-13 10:41:46,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:41:46,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 10:41:46,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921164887] [2020-10-13 10:41:46,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 10:41:46,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:41:46,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 10:41:46,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:41:46,159 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand 24 states. [2020-10-13 10:41:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:41:50,076 INFO L93 Difference]: Finished difference Result 232 states and 281 transitions. [2020-10-13 10:41:50,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 10:41:50,076 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 84 [2020-10-13 10:41:50,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:41:50,078 INFO L225 Difference]: With dead ends: 232 [2020-10-13 10:41:50,078 INFO L226 Difference]: Without dead ends: 149 [2020-10-13 10:41:50,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=360, Invalid=3180, Unknown=0, NotChecked=0, Total=3540 [2020-10-13 10:41:50,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-13 10:41:50,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 120. [2020-10-13 10:41:50,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:41:50,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 145 transitions. [2020-10-13 10:41:50,100 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 145 transitions. Word has length 84 [2020-10-13 10:41:50,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:41:50,100 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 145 transitions. [2020-10-13 10:41:50,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 10:41:50,101 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 145 transitions. [2020-10-13 10:41:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 10:41:50,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:41:50,102 INFO L422 BasicCegarLoop]: trace histogram [10, 8, 8, 6, 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, 1, 1] [2020-10-13 10:41:50,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:41:50,103 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:41:50,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:41:50,103 INFO L82 PathProgramCache]: Analyzing trace with hash -99392934, now seen corresponding path program 14 times [2020-10-13 10:41:50,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:41:50,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679249008] [2020-10-13 10:41:50,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:41:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:50,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:50,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:50,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:50,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:51,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:51,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:52,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:52,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:52,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:53,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:54,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:54,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:55,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 10:41:55,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 10:41:55,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 10:41:55,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:41:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:41:55,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:41:55,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:55,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:41:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:55,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:41:55,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:41:55,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:55,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:41:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:55,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:55,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:41:55,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:55,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 10:41:55,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:41:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:55,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:41:55,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:55,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:41:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:55,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:55,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:41:55,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:55,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:41:55,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:55,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:55,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:55,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:55,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:41:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:55,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:55,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:41:55,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:55,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:41:55,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:41:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:41:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:41:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:55,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:41:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:55,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:56,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:56,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:41:56,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 10:41:56,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-13 10:41:56,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:41:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:41:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:41:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:56,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 10:41:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:56,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:41:56,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:41:56,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:41:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:41:56,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:41:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:41:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:41:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:41:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:41:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 9 proven. 114 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 10:41:57,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679249008] [2020-10-13 10:41:57,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:41:57,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:41:57,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547688128] [2020-10-13 10:41:57,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:41:57,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:41:57,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:41:57,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:41:57,031 INFO L87 Difference]: Start difference. First operand 120 states and 145 transitions. Second operand 21 states. [2020-10-13 10:41:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:41:59,475 INFO L93 Difference]: Finished difference Result 263 states and 318 transitions. [2020-10-13 10:41:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:41:59,476 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 86 [2020-10-13 10:41:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:41:59,478 INFO L225 Difference]: With dead ends: 263 [2020-10-13 10:41:59,478 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 10:41:59,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:41:59,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 10:41:59,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 136. [2020-10-13 10:41:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-13 10:41:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 166 transitions. [2020-10-13 10:41:59,496 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 166 transitions. Word has length 86 [2020-10-13 10:41:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:41:59,496 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 166 transitions. [2020-10-13 10:41:59,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:41:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 166 transitions. [2020-10-13 10:41:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 10:41:59,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:41:59,497 INFO L422 BasicCegarLoop]: trace histogram [11, 9, 8, 6, 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, 1, 1] [2020-10-13 10:41:59,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:41:59,498 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:41:59,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:41:59,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1529258805, now seen corresponding path program 15 times [2020-10-13 10:41:59,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:41:59,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576013407] [2020-10-13 10:41:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:41:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:41:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:59,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:59,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:59,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:41:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:01,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:01,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:03,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:04,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 10:42:04,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 10:42:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 10:42:04,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:42:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:42:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:42:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:42:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:04,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:42:04,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:42:04,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:42:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:42:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:04,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:42:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:04,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:42:04,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:04,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 10:42:04,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:42:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:04,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:42:04,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:04,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:42:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:04,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:42:04,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:04,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:42:04,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:42:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:04,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:42:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:04,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:42:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:04,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:42:04,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:42:04,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:42:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:42:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:04,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:42:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:04,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:04,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:05,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:06,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:06,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:06,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:06,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:06,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:09,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:09,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 10:42:09,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-13 10:42:09,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 10:42:09,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:09,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:42:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:42:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:42:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:42:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:10,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:10,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:10,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:42:10,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:10,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:42:10,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:42:10,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:42:10,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:42:10,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 3 proven. 170 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 10:42:10,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576013407] [2020-10-13 10:42:10,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:42:10,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 10:42:10,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690463767] [2020-10-13 10:42:10,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 10:42:10,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:42:10,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 10:42:10,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=809, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:42:10,753 INFO L87 Difference]: Start difference. First operand 136 states and 166 transitions. Second operand 30 states. [2020-10-13 10:42:13,304 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-13 10:42:13,879 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-13 10:42:14,460 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-13 10:42:14,730 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 10:42:15,097 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-13 10:42:15,327 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-13 10:42:15,599 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-13 10:42:15,837 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-13 10:42:16,052 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-13 10:42:16,262 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-13 10:42:16,487 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-13 10:42:16,733 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-13 10:42:16,989 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-13 10:42:17,207 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-13 10:42:17,424 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-13 10:42:17,650 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-13 10:42:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:42:17,693 INFO L93 Difference]: Finished difference Result 299 states and 366 transitions. [2020-10-13 10:42:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 10:42:17,696 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 88 [2020-10-13 10:42:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:42:17,698 INFO L225 Difference]: With dead ends: 299 [2020-10-13 10:42:17,698 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 10:42:17,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=518, Invalid=3388, Unknown=0, NotChecked=0, Total=3906 [2020-10-13 10:42:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 10:42:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 154. [2020-10-13 10:42:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-13 10:42:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 189 transitions. [2020-10-13 10:42:17,722 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 189 transitions. Word has length 88 [2020-10-13 10:42:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:42:17,722 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 189 transitions. [2020-10-13 10:42:17,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 10:42:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 189 transitions. [2020-10-13 10:42:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 10:42:17,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:42:17,724 INFO L422 BasicCegarLoop]: trace histogram [11, 9, 9, 7, 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, 1, 1] [2020-10-13 10:42:17,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:42:17,724 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:42:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:42:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash 215044720, now seen corresponding path program 16 times [2020-10-13 10:42:17,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:42:17,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880983220] [2020-10-13 10:42:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:42:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:17,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:17,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:17,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:17,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:18,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:18,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:18,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:18,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:18,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:21,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:22,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:22,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:22,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 10:42:22,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 10:42:22,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 10:42:22,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:42:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:42:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:42:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:22,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:42:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:22,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:22,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:42:22,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:22,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:42:22,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:42:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:42:22,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:22,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:42:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:22,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:22,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:22,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:42:22,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:22,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 10:42:22,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:42:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:42:22,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:22,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:42:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:22,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:22,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:42:22,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:22,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:42:22,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:22,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:42:22,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:22,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:42:22,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:22,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:42:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:22,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:22,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:22,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:42:22,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:22,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:42:22,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:22,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:42:22,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:22,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:42:22,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:22,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:42:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:23,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:24,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:25,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:25,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:25,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:25,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:25,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:25,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:25,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:27,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:27,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:42:27,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-13 10:42:27,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 10:42:27,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:42:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:42:27,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:42:27,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:28,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:42:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:28,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:28,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:42:28,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:28,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:42:28,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:42:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:42:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:42:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 9 proven. 150 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 10:42:28,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880983220] [2020-10-13 10:42:28,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:42:28,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:42:28,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823017862] [2020-10-13 10:42:28,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:42:28,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:42:28,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:42:28,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:42:28,788 INFO L87 Difference]: Start difference. First operand 154 states and 189 transitions. Second operand 23 states. [2020-10-13 10:42:31,741 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-13 10:42:32,712 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 101 [2020-10-13 10:42:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:42:32,879 INFO L93 Difference]: Finished difference Result 318 states and 388 transitions. [2020-10-13 10:42:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 10:42:32,879 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 90 [2020-10-13 10:42:32,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:42:32,881 INFO L225 Difference]: With dead ends: 318 [2020-10-13 10:42:32,882 INFO L226 Difference]: Without dead ends: 189 [2020-10-13 10:42:32,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=245, Invalid=1825, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 10:42:32,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-13 10:42:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 152. [2020-10-13 10:42:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 10:42:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 187 transitions. [2020-10-13 10:42:32,905 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 187 transitions. Word has length 90 [2020-10-13 10:42:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:42:32,905 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 187 transitions. [2020-10-13 10:42:32,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:42:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 187 transitions. [2020-10-13 10:42:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 10:42:32,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:42:32,907 INFO L422 BasicCegarLoop]: trace histogram [12, 10, 8, 6, 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, 1, 1] [2020-10-13 10:42:32,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:42:32,907 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:42:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:42:32,908 INFO L82 PathProgramCache]: Analyzing trace with hash -999483056, now seen corresponding path program 17 times [2020-10-13 10:42:32,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:42:32,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280670334] [2020-10-13 10:42:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:42:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:32,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:33,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:33,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:33,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:34,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:34,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:35,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:35,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:35,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:37,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:37,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 10:42:37,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 10:42:37,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 10:42:37,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:42:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:42:37,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:42:37,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:37,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:42:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:37,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:37,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:37,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:42:37,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:37,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:42:37,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:42:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:37,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:42:37,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:37,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:42:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:38,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:38,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:42:38,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:38,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 10:42:38,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:38,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:42:38,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:38,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:42:38,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:38,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:42:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:38,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:38,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:42:38,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:42:38,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:42:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:42:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:38,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:42:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:38,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:38,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:42:38,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:42:38,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:42:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:42:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:42:38,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:42:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:38,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:38,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:40,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:41,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:41,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:42:41,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 10:42:41,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3568 [2020-10-13 10:42:41,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:42:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:42:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:42:41,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:43,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 10:42:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:43,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:43,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:42:43,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:42:43,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:42:43,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:42:43,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:42:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:42:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:42:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:42:43,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:42:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 3 proven. 192 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 10:42:43,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280670334] [2020-10-13 10:42:43,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:42:43,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:42:43,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048668804] [2020-10-13 10:42:43,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:42:43,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:42:43,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:42:43,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:42:43,088 INFO L87 Difference]: Start difference. First operand 152 states and 187 transitions. Second operand 31 states. [2020-10-13 10:42:46,273 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 125 [2020-10-13 10:42:46,975 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2020-10-13 10:42:47,339 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 123 [2020-10-13 10:42:47,908 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2020-10-13 10:42:48,322 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2020-10-13 10:42:48,522 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-13 10:42:48,796 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 103 [2020-10-13 10:42:49,090 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 107 [2020-10-13 10:42:49,752 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2020-10-13 10:42:50,222 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2020-10-13 10:42:50,514 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 103 [2020-10-13 10:42:50,843 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 121 [2020-10-13 10:42:51,376 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2020-10-13 10:42:51,642 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2020-10-13 10:42:51,882 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2020-10-13 10:42:52,167 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 106 [2020-10-13 10:42:52,673 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2020-10-13 10:42:52,946 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 102 [2020-10-13 10:42:53,398 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99 [2020-10-13 10:42:53,733 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 108 [2020-10-13 10:42:53,928 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2020-10-13 10:42:54,153 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2020-10-13 10:42:54,798 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2020-10-13 10:42:55,205 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2020-10-13 10:42:55,582 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-10-13 10:42:55,960 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2020-10-13 10:42:56,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:42:56,328 INFO L93 Difference]: Finished difference Result 344 states and 422 transitions. [2020-10-13 10:42:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-13 10:42:56,329 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 90 [2020-10-13 10:42:56,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:42:56,330 INFO L225 Difference]: With dead ends: 344 [2020-10-13 10:42:56,331 INFO L226 Difference]: Without dead ends: 217 [2020-10-13 10:42:56,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=820, Invalid=7190, Unknown=0, NotChecked=0, Total=8010 [2020-10-13 10:42:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-13 10:42:56,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 170. [2020-10-13 10:42:56,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 10:42:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 210 transitions. [2020-10-13 10:42:56,361 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 210 transitions. Word has length 90 [2020-10-13 10:42:56,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:42:56,362 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 210 transitions. [2020-10-13 10:42:56,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:42:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 210 transitions. [2020-10-13 10:42:56,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 10:42:56,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:42:56,363 INFO L422 BasicCegarLoop]: trace histogram [12, 10, 9, 7, 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, 1, 1] [2020-10-13 10:42:56,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:42:56,364 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:42:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:42:56,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1045605835, now seen corresponding path program 18 times [2020-10-13 10:42:56,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:42:56,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459230257] [2020-10-13 10:42:56,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:42:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:42:56,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:56,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:56,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:57,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:58,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:42:59,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:00,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:00,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:00,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:00,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:01,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 10:43:01,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 10:43:01,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-13 10:43:01,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:43:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:43:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:43:01,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:01,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:43:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:01,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:01,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:43:01,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:01,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:43:01,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:01,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:01,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:01,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:01,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:01,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:43:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:01,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:01,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:43:01,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:01,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 10:43:01,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:01,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:43:01,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:01,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:43:01,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:01,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:43:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:01,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:01,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:43:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:43:01,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:01,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:43:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:01,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:01,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:43:01,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:43:01,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:43:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:43:01,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:01,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:43:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:01,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:03,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:03,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:03,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:04,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:04,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:04,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:04,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:04,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:04,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:04,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:05,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:05,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:06,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:06,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:43:06,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 41 [2020-10-13 10:43:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 10:43:06,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 10:43:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:43:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:43:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:07,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 10:43:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:07,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:07,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:07,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:43:07,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:07,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:43:07,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:43:07,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 3 proven. 208 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 10:43:07,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459230257] [2020-10-13 10:43:07,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:43:07,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 10:43:07,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882935302] [2020-10-13 10:43:07,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 10:43:07,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:43:07,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 10:43:07,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=921, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:43:07,959 INFO L87 Difference]: Start difference. First operand 170 states and 210 transitions. Second operand 32 states. [2020-10-13 10:43:09,210 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-13 10:43:10,368 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-13 10:43:10,953 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 115 [2020-10-13 10:43:11,206 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 129 [2020-10-13 10:43:11,608 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 122 [2020-10-13 10:43:11,984 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2020-10-13 10:43:12,258 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2020-10-13 10:43:13,219 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2020-10-13 10:43:13,654 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2020-10-13 10:43:13,952 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 124 [2020-10-13 10:43:14,595 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 123 [2020-10-13 10:43:14,914 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 107 [2020-10-13 10:43:15,172 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 120 [2020-10-13 10:43:15,382 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-13 10:43:16,003 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2020-10-13 10:43:16,241 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 110 [2020-10-13 10:43:17,245 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 112 [2020-10-13 10:43:17,487 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2020-10-13 10:43:17,965 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-13 10:43:18,522 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 103 [2020-10-13 10:43:18,749 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 102 [2020-10-13 10:43:19,073 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 110 [2020-10-13 10:43:19,325 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2020-10-13 10:43:19,523 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-10-13 10:43:19,857 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2020-10-13 10:43:20,174 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2020-10-13 10:43:20,953 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-13 10:43:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:43:21,385 INFO L93 Difference]: Finished difference Result 376 states and 463 transitions. [2020-10-13 10:43:21,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-13 10:43:21,386 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 92 [2020-10-13 10:43:21,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:43:21,388 INFO L225 Difference]: With dead ends: 376 [2020-10-13 10:43:21,388 INFO L226 Difference]: Without dead ends: 231 [2020-10-13 10:43:21,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1146, Invalid=8360, Unknown=0, NotChecked=0, Total=9506 [2020-10-13 10:43:21,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-13 10:43:21,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 168. [2020-10-13 10:43:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-13 10:43:21,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 206 transitions. [2020-10-13 10:43:21,421 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 206 transitions. Word has length 92 [2020-10-13 10:43:21,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:43:21,421 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 206 transitions. [2020-10-13 10:43:21,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 10:43:21,421 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 206 transitions. [2020-10-13 10:43:21,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 10:43:21,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:43:21,423 INFO L422 BasicCegarLoop]: trace histogram [13, 11, 8, 6, 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, 1, 1] [2020-10-13 10:43:21,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:43:21,424 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:43:21,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:43:21,424 INFO L82 PathProgramCache]: Analyzing trace with hash -168921941, now seen corresponding path program 19 times [2020-10-13 10:43:21,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:43:21,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917962002] [2020-10-13 10:43:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:43:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:21,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:21,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:21,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:21,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:21,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:21,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:22,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:23,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:23,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:24,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:24,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:24,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:26,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 10:43:26,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 10:43:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 10:43:26,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:43:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:43:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:43:26,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:26,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:43:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:26,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:43:26,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:43:26,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:26,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:43:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:26,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:26,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:43:26,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:26,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 10:43:26,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:43:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:26,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:43:26,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:26,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:43:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:26,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:43:26,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:43:26,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:26,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:26,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:26,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:43:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:26,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:26,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:43:26,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:26,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:43:26,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:43:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:43:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:43:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:26,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:43:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:26,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:28,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:30,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:31,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:31,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:31,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:43:31,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 40 [2020-10-13 10:43:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 10:43:31,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:31,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 10:43:31,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:43:31,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:43:31,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:32,485 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2020-10-13 10:43:32,807 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-10-13 10:43:33,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 10:43:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:43:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:43:33,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:43:33,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:43:33,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:43:33,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:43:33,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:43:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:43:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:43:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:43:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:43:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 3 proven. 216 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 10:43:33,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917962002] [2020-10-13 10:43:33,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:43:33,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 10:43:33,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251567666] [2020-10-13 10:43:33,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 10:43:33,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:43:33,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 10:43:33,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:43:33,691 INFO L87 Difference]: Start difference. First operand 168 states and 206 transitions. Second operand 32 states. [2020-10-13 10:43:35,084 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 85 [2020-10-13 10:43:36,224 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 85 [2020-10-13 10:43:37,609 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 89