/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/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:15:34,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:15:34,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:15:34,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:15:34,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:15:34,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:15:34,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:15:34,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:15:34,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:15:34,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:15:34,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:15:34,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:15:34,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:15:34,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:15:34,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:15:34,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:15:34,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:15:34,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:15:34,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:15:34,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:15:34,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:15:34,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:15:34,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:15:34,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:15:34,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:15:34,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:15:34,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:15:34,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:15:34,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:15:34,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:15:34,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:15:34,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:15:34,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:15:34,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:15:34,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:15:34,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:15:34,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:15:34,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:15:34,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:15:34,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:15:34,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:15:34,706 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 13:15:34,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:15:34,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:15:34,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:15:34,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:15:34,751 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:15:34,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:15:34,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:15:34,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:15:34,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:15:34,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:15:34,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:15:34,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:15:34,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:15:34,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:15:34,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:15:34,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:15:34,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:15:34,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:15:34,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:15:34,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:15:34,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:15:34,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:15:34,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:15:34,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:15:34,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:15:34,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:15:34,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:15:34,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:15:34,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:15:34,757 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 13:15:35,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:15:35,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:15:35,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:15:35,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:15:35,059 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:15:35,060 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2020-10-13 13:15:35,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4b3777f/0df75c24414f435cb1318f5429678044/FLAG2bdc39652 [2020-10-13 13:15:35,542 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:15:35,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2020-10-13 13:15:35,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4b3777f/0df75c24414f435cb1318f5429678044/FLAG2bdc39652 [2020-10-13 13:15:35,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4b3777f/0df75c24414f435cb1318f5429678044 [2020-10-13 13:15:35,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:15:35,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:15:35,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:15:35,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:15:35,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:15:35,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:35" (1/1) ... [2020-10-13 13:15:35,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e363c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:35, skipping insertion in model container [2020-10-13 13:15:35,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:35" (1/1) ... [2020-10-13 13:15:35,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:15:35,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:15:36,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:15:36,450 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:15:36,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:15:36,531 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:15:36,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:36 WrapperNode [2020-10-13 13:15:36,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:15:36,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:15:36,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:15:36,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:15:36,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:36" (1/1) ... [2020-10-13 13:15:36,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:36" (1/1) ... [2020-10-13 13:15:36,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:36" (1/1) ... [2020-10-13 13:15:36,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:36" (1/1) ... [2020-10-13 13:15:36,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:36" (1/1) ... [2020-10-13 13:15:36,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:36" (1/1) ... [2020-10-13 13:15:36,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:36" (1/1) ... [2020-10-13 13:15:36,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:15:36,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:15:36,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:15:36,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:15:36,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:15:36,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:15:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:15:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:15:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:15:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:15:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:15:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:15:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:15:36,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:15:36,679 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:15:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:15:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:15:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:15:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:15:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:15:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:15:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:15:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:15:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:15:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:15:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:15:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:15:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:15:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:15:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:15:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:15:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:15:37,366 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:15:37,367 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:15:37,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:37 BoogieIcfgContainer [2020-10-13 13:15:37,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:15:37,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:15:37,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:15:37,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:15:37,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:15:35" (1/3) ... [2020-10-13 13:15:37,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e6e29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:37, skipping insertion in model container [2020-10-13 13:15:37,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:36" (2/3) ... [2020-10-13 13:15:37,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e6e29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:37, skipping insertion in model container [2020-10-13 13:15:37,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:37" (3/3) ... [2020-10-13 13:15:37,389 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2020-10-13 13:15:37,400 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:15:37,413 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:15:37,428 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:15:37,461 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:15:37,462 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:15:37,462 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:15:37,462 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:15:37,462 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:15:37,463 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:15:37,463 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:15:37,463 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:15:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-13 13:15:37,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 13:15:37,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:37,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:15:37,511 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:37,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:37,518 INFO L82 PathProgramCache]: Analyzing trace with hash -697851026, now seen corresponding path program 1 times [2020-10-13 13:15:37,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:37,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339804227] [2020-10-13 13:15:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:37,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:15:38,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-13 13:15:38,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:15:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:15:38,455 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:38,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:38,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:15:38,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:38,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:15:38,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:15:38,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:38,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:38,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:15:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:38,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:38,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:15:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:38,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:15:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:38,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:15:38,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:38,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:15:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:38,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:15:38,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:38,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:15:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:38,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:15:38,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:38,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:15:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:38,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:38,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:38,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:38,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:38,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:15:38,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:38,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:38,711 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 13:15:38,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339804227] [2020-10-13 13:15:38,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:38,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:15:38,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283120272] [2020-10-13 13:15:38,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:15:38,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:38,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:15:38,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:15:38,737 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 6 states. [2020-10-13 13:15:39,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:39,757 INFO L93 Difference]: Finished difference Result 272 states and 432 transitions. [2020-10-13 13:15:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:15:39,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-13 13:15:39,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:39,772 INFO L225 Difference]: With dead ends: 272 [2020-10-13 13:15:39,772 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 13:15:39,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:15:39,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 13:15:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 159. [2020-10-13 13:15:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 13:15:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 255 transitions. [2020-10-13 13:15:39,836 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 255 transitions. Word has length 62 [2020-10-13 13:15:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:39,836 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 255 transitions. [2020-10-13 13:15:39,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:15:39,837 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 255 transitions. [2020-10-13 13:15:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 13:15:39,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:39,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:15:39,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:15:39,841 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:39,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1541856528, now seen corresponding path program 1 times [2020-10-13 13:15:39,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:39,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899754167] [2020-10-13 13:15:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:39,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:40,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:15:40,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:40,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-10-13 13:15:40,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:40,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:15:40,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:15:40,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:15:40,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:40,784 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:40,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:40,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:40,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:40,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:15:40,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:40,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:40,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:40,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:40,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:40,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:15:40,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:40,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 13:15:40,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:40,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:15:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:40,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:15:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:40,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:41,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:15:41,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:15:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:41,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:15:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:15:41,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:15:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:41,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:41,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:41,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:41,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:41,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:41,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:15:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:41,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:41,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:41,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:41,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:15:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:41,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:41,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:41,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:41,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:15:41,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:41,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:41,238 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 13:15:41,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899754167] [2020-10-13 13:15:41,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:41,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:15:41,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55879188] [2020-10-13 13:15:41,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:15:41,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:41,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:15:41,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:15:41,242 INFO L87 Difference]: Start difference. First operand 159 states and 255 transitions. Second operand 12 states. [2020-10-13 13:15:41,646 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:15:41,868 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:15:42,117 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:15:42,304 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:15:43,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:43,633 INFO L93 Difference]: Finished difference Result 270 states and 424 transitions. [2020-10-13 13:15:43,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:15:43,636 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-13 13:15:43,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:43,640 INFO L225 Difference]: With dead ends: 270 [2020-10-13 13:15:43,640 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 13:15:43,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:15:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 13:15:43,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 159. [2020-10-13 13:15:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 13:15:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 228 transitions. [2020-10-13 13:15:43,670 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 228 transitions. Word has length 62 [2020-10-13 13:15:43,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:43,671 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 228 transitions. [2020-10-13 13:15:43,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:15:43,671 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 228 transitions. [2020-10-13 13:15:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 13:15:43,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:43,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:15:43,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:15:43,675 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:43,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1465750151, now seen corresponding path program 1 times [2020-10-13 13:15:43,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:43,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586412867] [2020-10-13 13:15:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:43,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:43,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:44,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:44,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:48,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:48,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 13:15:48,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:15:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:15:48,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:48,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:15:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:15:48,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:48,897 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:48,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:48,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:48,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:48,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:48,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:15:48,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:48,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:48,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:48,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:48,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:48,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:15:48,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:48,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 13:15:48,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:48,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:15:48,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:15:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:49,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:15:49,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:49,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:49,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:49,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:15:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:49,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:15:49,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:49,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:15:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 13:15:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:49,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:15:49,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:15:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:49,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:15:49,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:49,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:49,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:49,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:15:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:49,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:49,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:49,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:49,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:49,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:15:49,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:49,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:49,206 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 13:15:49,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586412867] [2020-10-13 13:15:49,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:49,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:15:49,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011139549] [2020-10-13 13:15:49,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:15:49,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:49,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:15:49,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:15:49,209 INFO L87 Difference]: Start difference. First operand 159 states and 228 transitions. Second operand 9 states. [2020-10-13 13:15:49,424 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:15:51,083 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:15:51,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:51,529 INFO L93 Difference]: Finished difference Result 367 states and 550 transitions. [2020-10-13 13:15:51,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:15:51,530 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 13:15:51,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:51,540 INFO L225 Difference]: With dead ends: 367 [2020-10-13 13:15:51,540 INFO L226 Difference]: Without dead ends: 277 [2020-10-13 13:15:51,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:15:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-13 13:15:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 241. [2020-10-13 13:15:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-13 13:15:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 352 transitions. [2020-10-13 13:15:51,608 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 352 transitions. Word has length 88 [2020-10-13 13:15:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:51,608 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 352 transitions. [2020-10-13 13:15:51,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:15:51,609 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 352 transitions. [2020-10-13 13:15:51,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:15:51,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:51,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:15:51,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:15:51,617 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:51,618 INFO L82 PathProgramCache]: Analyzing trace with hash 547096246, now seen corresponding path program 1 times [2020-10-13 13:15:51,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:51,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306933461] [2020-10-13 13:15:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:51,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:51,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:15:56,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:15:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:15:56,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:15:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 13:15:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:56,824 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:56,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:56,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:15:56,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:56,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:56,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:15:56,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:15:56,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:15:56,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:56,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:15:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:56,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:56,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:56,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:15:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:15:56,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:15:56,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:15:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:56,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:15:56,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:56,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:15:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:56,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:15:56,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:15:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:15:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:57,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:15:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:57,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:15:57,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:57,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:57,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:15:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:57,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:57,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:57,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:57,083 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 13:15:57,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306933461] [2020-10-13 13:15:57,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:57,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:15:57,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144036000] [2020-10-13 13:15:57,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:15:57,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:57,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:15:57,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:15:57,087 INFO L87 Difference]: Start difference. First operand 241 states and 352 transitions. Second operand 9 states. [2020-10-13 13:15:57,241 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:15:59,072 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:15:59,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:59,388 INFO L93 Difference]: Finished difference Result 645 states and 966 transitions. [2020-10-13 13:15:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:15:59,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 13:15:59,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:59,395 INFO L225 Difference]: With dead ends: 645 [2020-10-13 13:15:59,395 INFO L226 Difference]: Without dead ends: 473 [2020-10-13 13:15:59,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:15:59,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-10-13 13:15:59,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 415. [2020-10-13 13:15:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-10-13 13:15:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 618 transitions. [2020-10-13 13:15:59,452 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 618 transitions. Word has length 90 [2020-10-13 13:15:59,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:59,453 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 618 transitions. [2020-10-13 13:15:59,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:15:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 618 transitions. [2020-10-13 13:15:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:15:59,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:59,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:15:59,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:15:59,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:59,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:59,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1541695387, now seen corresponding path program 1 times [2020-10-13 13:15:59,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:59,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280505430] [2020-10-13 13:15:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:59,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:16:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:16:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:16:04,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:16:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:16:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 13:16:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:04,682 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:04,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:04,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:04,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:04,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:04,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:04,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 13:16:04,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 13:16:04,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:04,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:04,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:04,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:04,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:04,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:16:04,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:04,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:04,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:04,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:04,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:04,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:04,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:04,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:16:04,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:04,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:04,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:04,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:04,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:05,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:05,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:05,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:05,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:16:05,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:05,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:05,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:16:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:05,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:05,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:05,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:05,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:05,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:05,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:16:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:16:05,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:05,074 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 13:16:05,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280505430] [2020-10-13 13:16:05,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:05,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:16:05,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456537048] [2020-10-13 13:16:05,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:16:05,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:05,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:16:05,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:16:05,076 INFO L87 Difference]: Start difference. First operand 415 states and 618 transitions. Second operand 13 states. [2020-10-13 13:16:05,249 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:05,622 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:05,785 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:07,463 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:07,605 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:07,821 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:16:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:11,131 INFO L93 Difference]: Finished difference Result 2775 states and 4249 transitions. [2020-10-13 13:16:11,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 13:16:11,131 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2020-10-13 13:16:11,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:11,152 INFO L225 Difference]: With dead ends: 2775 [2020-10-13 13:16:11,153 INFO L226 Difference]: Without dead ends: 2429 [2020-10-13 13:16:11,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=572, Invalid=1878, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 13:16:11,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2020-10-13 13:16:11,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2141. [2020-10-13 13:16:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2141 states. [2020-10-13 13:16:11,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3284 transitions. [2020-10-13 13:16:11,359 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3284 transitions. Word has length 92 [2020-10-13 13:16:11,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:11,360 INFO L479 AbstractCegarLoop]: Abstraction has 2141 states and 3284 transitions. [2020-10-13 13:16:11,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:16:11,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3284 transitions. [2020-10-13 13:16:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 13:16:11,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:11,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:16:11,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:16:11,365 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:11,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:11,365 INFO L82 PathProgramCache]: Analyzing trace with hash 429127030, now seen corresponding path program 1 times [2020-10-13 13:16:11,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:11,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471434058] [2020-10-13 13:16:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:11,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:11,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:11,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:16:16,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:16:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:16:16,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:16:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:16:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 13:16:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:16,591 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:16,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:16,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:16:16,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:16,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:16,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:16,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:16,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:16,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:16:16,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:16,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:16:16,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:16,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:16,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:16,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:16,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:16,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:16,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:16:16,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:16,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:16,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:16,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:16,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:16,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:16,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:16,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:16,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 13:16:16,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:16,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:16:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:16,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:16,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:16:16,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:16,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:16:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:16:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:16,905 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 13:16:16,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471434058] [2020-10-13 13:16:16,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:16,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:16:16,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077211635] [2020-10-13 13:16:16,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:16:16,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:16,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:16:16,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:16:16,909 INFO L87 Difference]: Start difference. First operand 2141 states and 3284 transitions. Second operand 10 states. [2020-10-13 13:16:17,073 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:17,433 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:19,048 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:19,185 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:21,523 INFO L93 Difference]: Finished difference Result 8323 states and 12819 transitions. [2020-10-13 13:16:21,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:16:21,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-10-13 13:16:21,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:21,557 INFO L225 Difference]: With dead ends: 8323 [2020-10-13 13:16:21,557 INFO L226 Difference]: Without dead ends: 6251 [2020-10-13 13:16:21,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 13:16:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2020-10-13 13:16:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 5515. [2020-10-13 13:16:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5515 states. [2020-10-13 13:16:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 8494 transitions. [2020-10-13 13:16:21,903 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 8494 transitions. Word has length 93 [2020-10-13 13:16:21,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:21,904 INFO L479 AbstractCegarLoop]: Abstraction has 5515 states and 8494 transitions. [2020-10-13 13:16:21,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:16:21,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 8494 transitions. [2020-10-13 13:16:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:16:21,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:21,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:16:21,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:16:21,908 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:21,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:21,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1343394876, now seen corresponding path program 1 times [2020-10-13 13:16:21,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:21,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352055425] [2020-10-13 13:16:21,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:21,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:21,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:22,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:22,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:22,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:22,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:26,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:26,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:16:26,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:16:26,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:16:26,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:16:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 13:16:26,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:27,126 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:27,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:27,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:27,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:27,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:27,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:16:27,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:27,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:27,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:27,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:27,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:27,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:27,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:27,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:16:27,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:16:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:27,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:27,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:27,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:27,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:27,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:27,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:27,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:27,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:27,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:27,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:27,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:27,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:27,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:27,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:27,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:27,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:27,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:27,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:27,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:27,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:27,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:27,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:27,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:27,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:16:27,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:27,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:16:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:27,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:27,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:27,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:27,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:27,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:27,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:27,377 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 13:16:27,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352055425] [2020-10-13 13:16:27,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:27,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:27,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909623795] [2020-10-13 13:16:27,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:27,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:27,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:27,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:27,384 INFO L87 Difference]: Start difference. First operand 5515 states and 8494 transitions. Second operand 9 states. [2020-10-13 13:16:27,547 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:29,507 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:16:29,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:29,969 INFO L93 Difference]: Finished difference Result 16171 states and 24828 transitions. [2020-10-13 13:16:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:16:29,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-13 13:16:29,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:30,029 INFO L225 Difference]: With dead ends: 16171 [2020-10-13 13:16:30,029 INFO L226 Difference]: Without dead ends: 10725 [2020-10-13 13:16:30,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:16:30,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10725 states. [2020-10-13 13:16:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10725 to 9251. [2020-10-13 13:16:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9251 states. [2020-10-13 13:16:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9251 states to 9251 states and 14268 transitions. [2020-10-13 13:16:30,696 INFO L78 Accepts]: Start accepts. Automaton has 9251 states and 14268 transitions. Word has length 94 [2020-10-13 13:16:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:30,697 INFO L479 AbstractCegarLoop]: Abstraction has 9251 states and 14268 transitions. [2020-10-13 13:16:30,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 9251 states and 14268 transitions. [2020-10-13 13:16:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 13:16:30,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:30,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:16:30,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:16:30,703 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:30,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:30,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1175729301, now seen corresponding path program 1 times [2020-10-13 13:16:30,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:30,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891588551] [2020-10-13 13:16:30,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:30,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:30,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:31,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:35,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:35,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:16:35,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:16:35,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:16:35,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:16:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 13:16:35,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:35,949 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:35,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:35,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:35,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:35,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:35,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:35,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:35,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:35,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:35,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:35,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:35,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:35,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:35,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:16:35,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:16:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:36,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:36,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:36,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:36,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:36,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:36,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:36,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:36,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:36,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:36,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:36,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:36,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:16:36,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:36,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:36,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:36,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:36,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:36,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:36,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:36,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:36,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:36,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:36,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:36,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:36,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:36,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:36,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:36,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:16:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:36,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:36,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:36,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:36,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:36,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:36,159 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 13:16:36,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891588551] [2020-10-13 13:16:36,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:36,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:36,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76699830] [2020-10-13 13:16:36,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:36,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:36,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:36,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:36,160 INFO L87 Difference]: Start difference. First operand 9251 states and 14268 transitions. Second operand 9 states. [2020-10-13 13:16:36,324 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:36,472 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:36,625 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:16:36,778 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:16:37,372 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:16:39,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:39,807 INFO L93 Difference]: Finished difference Result 29211 states and 45737 transitions. [2020-10-13 13:16:39,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:16:39,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-13 13:16:39,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:39,934 INFO L225 Difference]: With dead ends: 29211 [2020-10-13 13:16:39,934 INFO L226 Difference]: Without dead ends: 19974 [2020-10-13 13:16:39,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:16:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19974 states. [2020-10-13 13:16:40,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19974 to 18256. [2020-10-13 13:16:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18256 states. [2020-10-13 13:16:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18256 states to 18256 states and 27743 transitions. [2020-10-13 13:16:40,985 INFO L78 Accepts]: Start accepts. Automaton has 18256 states and 27743 transitions. Word has length 96 [2020-10-13 13:16:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:40,986 INFO L479 AbstractCegarLoop]: Abstraction has 18256 states and 27743 transitions. [2020-10-13 13:16:40,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 18256 states and 27743 transitions. [2020-10-13 13:16:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 13:16:40,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:40,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:16:40,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:16:40,995 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:40,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:40,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1451666691, now seen corresponding path program 1 times [2020-10-13 13:16:40,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:40,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939141137] [2020-10-13 13:16:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:41,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:41,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:41,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:43,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:46,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 13:16:46,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:16:46,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:16:46,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:46,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:16:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:16:46,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:46,182 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:46,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:46,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:46,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:46,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:46,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:46,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:46,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:46,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:46,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:46,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:16:46,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:46,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:46,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:46,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:16:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:46,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:46,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:46,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:46,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:46,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:46,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:46,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:46,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:46,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:16:46,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:16:46,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:16:46,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:46,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 13:16:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:46,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:46,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:46,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:46,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:46,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:46,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:16:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:46,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:46,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:46,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:46,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:46,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:46,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:46,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:46,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:46,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:46,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 13:16:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:46,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:46,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:46,355 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 13:16:46,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939141137] [2020-10-13 13:16:46,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:46,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:16:46,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396264405] [2020-10-13 13:16:46,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:16:46,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:46,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:16:46,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:16:46,357 INFO L87 Difference]: Start difference. First operand 18256 states and 27743 transitions. Second operand 8 states. [2020-10-13 13:16:46,524 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:47,737 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:16:49,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:49,962 INFO L93 Difference]: Finished difference Result 46390 states and 71105 transitions. [2020-10-13 13:16:49,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:16:49,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-10-13 13:16:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:50,113 INFO L225 Difference]: With dead ends: 46390 [2020-10-13 13:16:50,114 INFO L226 Difference]: Without dead ends: 28260 [2020-10-13 13:16:50,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:16:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28260 states. [2020-10-13 13:16:51,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28260 to 25710. [2020-10-13 13:16:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25710 states. [2020-10-13 13:16:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25710 states to 25710 states and 38983 transitions. [2020-10-13 13:16:51,585 INFO L78 Accepts]: Start accepts. Automaton has 25710 states and 38983 transitions. Word has length 97 [2020-10-13 13:16:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:51,585 INFO L479 AbstractCegarLoop]: Abstraction has 25710 states and 38983 transitions. [2020-10-13 13:16:51,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:16:51,585 INFO L276 IsEmpty]: Start isEmpty. Operand 25710 states and 38983 transitions. [2020-10-13 13:16:51,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 13:16:51,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:51,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:16:51,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:16:51,588 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:51,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:51,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1511141907, now seen corresponding path program 1 times [2020-10-13 13:16:51,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:51,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772692070] [2020-10-13 13:16:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:51,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:52,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:54,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 13:16:56,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:16:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:16:56,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:16:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:16:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,748 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:56,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:56,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:56,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:56,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:16:56,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:16:56,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:16:56,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:56,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:16:56,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:16:56,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:16:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:56,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:56,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:16:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:56,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 13:16:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:56,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:56,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:16:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:16:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:56,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:56,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:56,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:56,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 13:16:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:56,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:56,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:56,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:56,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:56,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:56,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:56,919 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 13:16:56,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772692070] [2020-10-13 13:16:56,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:56,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:16:56,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919185460] [2020-10-13 13:16:56,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:16:56,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:56,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:16:56,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:16:56,921 INFO L87 Difference]: Start difference. First operand 25710 states and 38983 transitions. Second operand 7 states. [2020-10-13 13:16:57,104 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:58,753 INFO L93 Difference]: Finished difference Result 41053 states and 62108 transitions. [2020-10-13 13:16:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:16:58,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 13:16:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:58,853 INFO L225 Difference]: With dead ends: 41053 [2020-10-13 13:16:58,853 INFO L226 Difference]: Without dead ends: 28354 [2020-10-13 13:16:58,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:16:58,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28354 states. [2020-10-13 13:17:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28354 to 25712. [2020-10-13 13:17:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25712 states. [2020-10-13 13:17:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25712 states to 25712 states and 38985 transitions. [2020-10-13 13:17:00,081 INFO L78 Accepts]: Start accepts. Automaton has 25712 states and 38985 transitions. Word has length 97 [2020-10-13 13:17:00,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:00,081 INFO L479 AbstractCegarLoop]: Abstraction has 25712 states and 38985 transitions. [2020-10-13 13:17:00,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:17:00,081 INFO L276 IsEmpty]: Start isEmpty. Operand 25712 states and 38985 transitions. [2020-10-13 13:17:00,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:17:00,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:00,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:17:00,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:17:00,084 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:00,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:00,085 INFO L82 PathProgramCache]: Analyzing trace with hash 933735654, now seen corresponding path program 1 times [2020-10-13 13:17:00,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:00,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503573801] [2020-10-13 13:17:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:01,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:05,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:05,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:17:05,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:17:05,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:17:05,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:05,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:17:05,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:17:05,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 13:17:05,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:05,258 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:05,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:05,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:05,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:05,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:05,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:05,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:05,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:05,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:05,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:05,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:05,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:05,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:17:05,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 13:17:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:05,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:17:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:05,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:05,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:05,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:05,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:05,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:05,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:17:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:05,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:17:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:05,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:05,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:05,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:17:05,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:05,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:17:05,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:17:05,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:05,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:17:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:05,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:05,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:05,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:05,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:17:05,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:17:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:17:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:05,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:05,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:05,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:05,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:05,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:05,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:17:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:05,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:05,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:05,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:05,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:05,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:05,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:17:05,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:17:05,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:05,469 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 13:17:05,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503573801] [2020-10-13 13:17:05,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:05,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:17:05,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553654912] [2020-10-13 13:17:05,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:17:05,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:05,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:17:05,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:17:05,471 INFO L87 Difference]: Start difference. First operand 25712 states and 38985 transitions. Second operand 10 states. [2020-10-13 13:17:05,654 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:06,077 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:17:07,247 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:17:07,404 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:17:11,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:11,178 INFO L93 Difference]: Finished difference Result 93606 states and 142282 transitions. [2020-10-13 13:17:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:17:11,179 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-10-13 13:17:11,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:11,413 INFO L225 Difference]: With dead ends: 93606 [2020-10-13 13:17:11,413 INFO L226 Difference]: Without dead ends: 68028 [2020-10-13 13:17:11,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:17:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68028 states. [2020-10-13 13:17:15,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68028 to 60274. [2020-10-13 13:17:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60274 states. [2020-10-13 13:17:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60274 states to 60274 states and 91889 transitions. [2020-10-13 13:17:15,254 INFO L78 Accepts]: Start accepts. Automaton has 60274 states and 91889 transitions. Word has length 98 [2020-10-13 13:17:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:15,255 INFO L479 AbstractCegarLoop]: Abstraction has 60274 states and 91889 transitions. [2020-10-13 13:17:15,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:17:15,255 INFO L276 IsEmpty]: Start isEmpty. Operand 60274 states and 91889 transitions. [2020-10-13 13:17:15,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:17:15,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:15,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:17:15,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:17:15,258 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:15,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:15,258 INFO L82 PathProgramCache]: Analyzing trace with hash -245291901, now seen corresponding path program 1 times [2020-10-13 13:17:15,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:15,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405054028] [2020-10-13 13:17:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:15,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:16,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:17:20,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:17:20,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:17:20,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:17:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 13:17:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 13:17:20,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,466 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:20,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:20,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:17:20,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:20,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:20,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:20,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:20,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:17:20,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:20,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:20,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:17:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:17:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:20,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:20,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:20,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:20,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:17:20,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:17:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:17:20,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:17:20,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:17:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:17:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:20,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:20,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:20,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:20,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:17:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:20,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:17:20,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:20,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:17:20,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:17:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:17:20,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:17:20,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:17:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:17:20,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,716 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 13:17:20,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405054028] [2020-10-13 13:17:20,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:20,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:17:20,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148281547] [2020-10-13 13:17:20,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:17:20,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:20,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:17:20,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:17:20,718 INFO L87 Difference]: Start difference. First operand 60274 states and 91889 transitions. Second operand 10 states. [2020-10-13 13:17:20,905 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:21,334 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:17:22,380 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:17:22,549 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:17:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:30,285 INFO L93 Difference]: Finished difference Result 256720 states and 394074 transitions. [2020-10-13 13:17:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:17:30,288 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-10-13 13:17:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:30,862 INFO L225 Difference]: With dead ends: 256720 [2020-10-13 13:17:30,863 INFO L226 Difference]: Without dead ends: 196580 [2020-10-13 13:17:30,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:17:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196580 states. [2020-10-13 13:17:41,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196580 to 173808. [2020-10-13 13:17:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173808 states. [2020-10-13 13:17:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173808 states to 173808 states and 268997 transitions. [2020-10-13 13:17:42,329 INFO L78 Accepts]: Start accepts. Automaton has 173808 states and 268997 transitions. Word has length 99 [2020-10-13 13:17:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:42,330 INFO L479 AbstractCegarLoop]: Abstraction has 173808 states and 268997 transitions. [2020-10-13 13:17:42,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:17:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 173808 states and 268997 transitions. [2020-10-13 13:17:42,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:17:42,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:42,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:17:42,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:17:42,333 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:42,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:42,334 INFO L82 PathProgramCache]: Analyzing trace with hash -760811580, now seen corresponding path program 1 times [2020-10-13 13:17:42,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:42,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559174187] [2020-10-13 13:17:42,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:42,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:42,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:42,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:42,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:44,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:47,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:17:47,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:17:47,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:17:47,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 13:17:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:17:47,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:47,516 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:47,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:47,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:47,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:47,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:17:47,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:47,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:47,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:47,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:47,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:47,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:17:47,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:47,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:47,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:47,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 13:17:47,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:47,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:17:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:47,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:47,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:47,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:47,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:47,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:47,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:47,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:17:47,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:47,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:17:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:47,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:17:47,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:17:47,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:17:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:47,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:17:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:47,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:47,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:47,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:47,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:47,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:17:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:47,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:17:47,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:47,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:17:47,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:47,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:17:47,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:47,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:17:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:47,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:47,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:17:47,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:47,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:17:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:47,697 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 13:17:47,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559174187] [2020-10-13 13:17:47,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:47,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:17:47,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905629597] [2020-10-13 13:17:47,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:17:47,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:47,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:17:47,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:17:47,699 INFO L87 Difference]: Start difference. First operand 173808 states and 268997 transitions. Second operand 8 states. [2020-10-13 13:17:47,867 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:49,316 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:17:59,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:59,995 INFO L93 Difference]: Finished difference Result 457860 states and 709381 transitions. [2020-10-13 13:17:59,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:17:59,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-13 13:17:59,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:18:00,779 INFO L225 Difference]: With dead ends: 457860 [2020-10-13 13:18:00,779 INFO L226 Difference]: Without dead ends: 304942 [2020-10-13 13:18:00,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:18:01,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304942 states. [2020-10-13 13:18:19,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304942 to 281267. [2020-10-13 13:18:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281267 states. [2020-10-13 13:18:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281267 states to 281267 states and 427170 transitions. [2020-10-13 13:18:20,905 INFO L78 Accepts]: Start accepts. Automaton has 281267 states and 427170 transitions. Word has length 99 [2020-10-13 13:18:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:18:20,905 INFO L479 AbstractCegarLoop]: Abstraction has 281267 states and 427170 transitions. [2020-10-13 13:18:20,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:18:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 281267 states and 427170 transitions. [2020-10-13 13:18:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:18:20,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:18:20,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:20,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:18:20,907 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:18:20,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:18:20,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1778123419, now seen corresponding path program 1 times [2020-10-13 13:18:20,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:18:20,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833724855] [2020-10-13 13:18:20,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:18:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:20,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:20,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:21,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:21,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:21,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:25,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:25,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:18:25,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:18:25,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:18:25,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:18:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:18:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:18:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:26,075 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:18:26,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:18:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:26,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:18:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:18:26,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:18:26,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:18:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:26,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:26,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:26,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:26,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:18:26,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:18:26,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 13:18:26,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:18:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:18:26,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:18:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:26,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:18:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:26,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:26,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:18:26,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:26,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:18:26,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:26,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:26,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:18:26,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:26,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:18:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:26,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:26,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:26,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:26,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:26,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:18:26,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:26,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:26,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:18:26,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:26,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:18:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:26,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:26,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:26,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:18:26,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:26,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:18:26,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:18:26,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:26,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:26,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:18:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:26,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:26,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:26,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:26,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:26,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:18:26,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:26,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:26,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:18:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:26,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:26,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:26,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:18:26,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:18:26,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:18:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:26,322 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 13:18:26,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833724855] [2020-10-13 13:18:26,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:18:26,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:18:26,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511145492] [2020-10-13 13:18:26,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:18:26,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:18:26,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:18:26,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:18:26,324 INFO L87 Difference]: Start difference. First operand 281267 states and 427170 transitions. Second operand 8 states. [2020-10-13 13:18:26,545 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:18:26,715 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:18:42,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:18:42,303 INFO L93 Difference]: Finished difference Result 586187 states and 889511 transitions. [2020-10-13 13:18:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:18:42,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-13 13:18:42,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:18:43,502 INFO L225 Difference]: With dead ends: 586187 [2020-10-13 13:18:43,502 INFO L226 Difference]: Without dead ends: 304937 [2020-10-13 13:18:43,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:18:43,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304937 states. [2020-10-13 13:18:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304937 to 281264. [2020-10-13 13:18:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281264 states. [2020-10-13 13:18:55,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281264 states to 281264 states and 427164 transitions. [2020-10-13 13:18:55,588 INFO L78 Accepts]: Start accepts. Automaton has 281264 states and 427164 transitions. Word has length 99 [2020-10-13 13:18:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:18:55,588 INFO L479 AbstractCegarLoop]: Abstraction has 281264 states and 427164 transitions. [2020-10-13 13:18:55,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:18:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 281264 states and 427164 transitions. [2020-10-13 13:18:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:18:55,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:18:55,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:55,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:18:55,590 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:18:55,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:18:55,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1029999628, now seen corresponding path program 1 times [2020-10-13 13:18:55,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:18:55,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762154157] [2020-10-13 13:18:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:18:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:55,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:55,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:55,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:55,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:55,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking...