/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:16:05,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:16:05,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:16:05,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:16:05,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:16:05,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:16:05,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:16:05,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:16:05,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:16:05,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:16:05,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:16:05,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:16:05,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:16:05,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:16:05,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:16:05,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:16:05,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:16:05,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:16:05,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:16:05,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:16:05,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:16:05,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:16:05,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:16:05,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:16:05,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:16:05,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:16:05,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:16:05,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:16:05,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:16:05,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:16:05,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:16:05,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:16:05,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:16:05,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:16:05,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:16:05,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:16:05,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:16:05,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:16:05,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:16:05,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:16:05,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:16:05,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:16:05,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:16:05,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:16:05,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:16:05,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:16:05,766 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:16:05,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:16:05,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:16:05,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:16:05,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:16:05,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:16:05,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:16:05,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:16:05,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:16:05,769 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:16:05,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:16:05,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:16:05,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:16:05,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:16:05,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:16:05,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:16:05,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:16:05,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:16:05,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:16:05,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:16:05,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:16:05,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:16:05,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:16:05,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:16:05,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:16:05,773 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:16:06,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:16:06,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:16:06,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:16:06,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:16:06,269 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:16:06,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2020-09-24 18:16:06,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cc5ea5b3/31c0ffe885444274aef72b4886944616/FLAG8a7c0d452 [2020-09-24 18:16:06,981 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:16:06,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2020-09-24 18:16:06,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cc5ea5b3/31c0ffe885444274aef72b4886944616/FLAG8a7c0d452 [2020-09-24 18:16:07,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cc5ea5b3/31c0ffe885444274aef72b4886944616 [2020-09-24 18:16:07,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:16:07,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:16:07,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:16:07,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:16:07,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:16:07,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:07" (1/1) ... [2020-09-24 18:16:07,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bbc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:07, skipping insertion in model container [2020-09-24 18:16:07,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:07" (1/1) ... [2020-09-24 18:16:07,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:16:07,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:16:07,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:16:07,723 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:16:07,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:16:07,951 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:16:07,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:07 WrapperNode [2020-09-24 18:16:07,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:16:07,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:16:07,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:16:07,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:16:07,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:07" (1/1) ... [2020-09-24 18:16:07,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:07" (1/1) ... [2020-09-24 18:16:07,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:07" (1/1) ... [2020-09-24 18:16:07,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:07" (1/1) ... [2020-09-24 18:16:08,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:07" (1/1) ... [2020-09-24 18:16:08,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:07" (1/1) ... [2020-09-24 18:16:08,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:07" (1/1) ... [2020-09-24 18:16:08,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:16:08,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:16:08,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:16:08,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:16:08,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:16:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:16:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:16:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-09-24 18:16:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-09-24 18:16:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-09-24 18:16:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:16:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-09-24 18:16:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-09-24 18:16:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-09-24 18:16:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-09-24 18:16:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-09-24 18:16:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-09-24 18:16:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-09-24 18:16:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-09-24 18:16:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-09-24 18:16:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-09-24 18:16:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-09-24 18:16:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-09-24 18:16:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:16:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 18:16:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:16:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 18:16:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-09-24 18:16:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-09-24 18:16:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-09-24 18:16:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-09-24 18:16:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-09-24 18:16:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-09-24 18:16:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-09-24 18:16:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-09-24 18:16:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-09-24 18:16:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-09-24 18:16:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-09-24 18:16:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-09-24 18:16:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-09-24 18:16:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-09-24 18:16:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:16:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-09-24 18:16:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:16:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:16:08,477 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 18:16:08,583 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-09-24 18:16:08,583 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-09-24 18:16:08,626 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 18:16:08,787 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-09-24 18:16:08,787 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-09-24 18:16:08,790 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 18:16:08,862 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-24 18:16:08,862 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-24 18:16:08,869 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 18:16:08,924 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-24 18:16:08,925 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-24 18:16:09,095 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 18:16:09,118 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-09-24 18:16:09,118 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-09-24 18:16:09,165 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 18:16:09,290 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-09-24 18:16:09,290 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-09-24 18:16:09,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:16:09,315 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:16:09,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:09 BoogieIcfgContainer [2020-09-24 18:16:09,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:16:09,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:16:09,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:16:09,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:16:09,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:16:07" (1/3) ... [2020-09-24 18:16:09,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd355c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:09, skipping insertion in model container [2020-09-24 18:16:09,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:07" (2/3) ... [2020-09-24 18:16:09,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd355c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:09, skipping insertion in model container [2020-09-24 18:16:09,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:09" (3/3) ... [2020-09-24 18:16:09,337 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.c [2020-09-24 18:16:09,350 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:16:09,362 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:16:09,389 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:16:09,427 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:16:09,427 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:16:09,427 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:16:09,428 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:16:09,428 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:16:09,428 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:16:09,428 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:16:09,428 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:16:09,464 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states. [2020-09-24 18:16:09,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 18:16:09,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:09,477 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] [2020-09-24 18:16:09,478 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:09,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:09,486 INFO L82 PathProgramCache]: Analyzing trace with hash 337662663, now seen corresponding path program 1 times [2020-09-24 18:16:09,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:09,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956939109] [2020-09-24 18:16:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:11,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 18:16:11,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:16:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1548 [2020-09-24 18:16:11,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-24 18:16:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:16:11,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:16:11,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:11,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:11,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:11,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:11,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:11,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:16:11,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:11,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:11,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:11,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:11,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:11,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:11,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:11,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:16:11,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:16:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:16:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:11,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956939109] [2020-09-24 18:16:11,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:11,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:16:11,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577126957] [2020-09-24 18:16:11,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:16:11,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:11,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:16:11,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:16:11,623 INFO L87 Difference]: Start difference. First operand 666 states. Second operand 5 states. [2020-09-24 18:16:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:13,693 INFO L93 Difference]: Finished difference Result 1035 states and 1244 transitions. [2020-09-24 18:16:13,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:16:13,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-09-24 18:16:13,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:13,730 INFO L225 Difference]: With dead ends: 1035 [2020-09-24 18:16:13,730 INFO L226 Difference]: Without dead ends: 706 [2020-09-24 18:16:13,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:16:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-24 18:16:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 652. [2020-09-24 18:16:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-09-24 18:16:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 746 transitions. [2020-09-24 18:16:13,851 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 746 transitions. Word has length 85 [2020-09-24 18:16:13,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:13,852 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 746 transitions. [2020-09-24 18:16:13,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:16:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 746 transitions. [2020-09-24 18:16:13,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 18:16:13,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:13,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:13,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:16:13,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:13,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:13,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1711200696, now seen corresponding path program 1 times [2020-09-24 18:16:13,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:13,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896564506] [2020-09-24 18:16:13,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:14,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:14,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 18:16:14,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:14,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-09-24 18:16:14,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:14,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:16:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-24 18:16:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 18:16:14,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:14,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:14,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:14,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:14,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:14,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:14,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:16:14,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:14,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:14,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:14,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:14,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:14,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:14,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:14,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:16:14,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:14,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:14,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:14,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 18:16:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:14,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:14,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:14,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:14,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:14,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:16:14,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:16:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:14,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896564506] [2020-09-24 18:16:14,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:14,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:16:14,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219558912] [2020-09-24 18:16:14,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:16:14,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:14,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:16:14,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:16:14,815 INFO L87 Difference]: Start difference. First operand 652 states and 746 transitions. Second operand 6 states. [2020-09-24 18:16:16,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:16,919 INFO L93 Difference]: Finished difference Result 967 states and 1119 transitions. [2020-09-24 18:16:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:16:16,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-24 18:16:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:16,927 INFO L225 Difference]: With dead ends: 967 [2020-09-24 18:16:16,928 INFO L226 Difference]: Without dead ends: 879 [2020-09-24 18:16:16,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:16:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-09-24 18:16:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 803. [2020-09-24 18:16:16,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-09-24 18:16:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 913 transitions. [2020-09-24 18:16:17,005 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 913 transitions. Word has length 136 [2020-09-24 18:16:17,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:17,006 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 913 transitions. [2020-09-24 18:16:17,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:16:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 913 transitions. [2020-09-24 18:16:17,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 18:16:17,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:17,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:17,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:16:17,018 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:17,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:17,019 INFO L82 PathProgramCache]: Analyzing trace with hash -472111805, now seen corresponding path program 1 times [2020-09-24 18:16:17,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:17,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721781829] [2020-09-24 18:16:17,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 18:16:17,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-09-24 18:16:17,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:16:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 18:16:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:16:17,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:17,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:16:17,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:17,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:17,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:16:17,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:17,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:16:17,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:17,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 18:16:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:17,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:17,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:17,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:17,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:17,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:16:17,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:17,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:16:17,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:17,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721781829] [2020-09-24 18:16:17,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:17,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:16:17,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690540904] [2020-09-24 18:16:17,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:16:17,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:17,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:16:17,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:16:17,758 INFO L87 Difference]: Start difference. First operand 803 states and 913 transitions. Second operand 6 states. [2020-09-24 18:16:19,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:19,267 INFO L93 Difference]: Finished difference Result 1124 states and 1281 transitions. [2020-09-24 18:16:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:16:19,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-24 18:16:19,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:19,273 INFO L225 Difference]: With dead ends: 1124 [2020-09-24 18:16:19,274 INFO L226 Difference]: Without dead ends: 901 [2020-09-24 18:16:19,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:16:19,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-09-24 18:16:19,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 878. [2020-09-24 18:16:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-24 18:16:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 999 transitions. [2020-09-24 18:16:19,329 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 999 transitions. Word has length 158 [2020-09-24 18:16:19,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:19,330 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 999 transitions. [2020-09-24 18:16:19,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:16:19,330 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 999 transitions. [2020-09-24 18:16:19,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 18:16:19,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:19,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:19,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:16:19,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:19,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:19,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1225477396, now seen corresponding path program 1 times [2020-09-24 18:16:19,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:19,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754767682] [2020-09-24 18:16:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:19,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:19,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 18:16:19,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:19,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-24 18:16:19,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:16:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-09-24 18:16:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:16:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:19,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:19,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:19,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:19,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:19,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:19,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:16:19,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:19,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:19,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:19,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:19,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:19,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:19,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:19,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:19,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:16:19,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:19,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:19,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:19,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:19,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:19,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 18:16:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:19,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:19,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:19,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:19,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:19,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:20,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754767682] [2020-09-24 18:16:20,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:20,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:16:20,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138083552] [2020-09-24 18:16:20,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:16:20,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:20,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:16:20,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:16:20,040 INFO L87 Difference]: Start difference. First operand 878 states and 999 transitions. Second operand 6 states. [2020-09-24 18:16:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:21,842 INFO L93 Difference]: Finished difference Result 882 states and 1002 transitions. [2020-09-24 18:16:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:16:21,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-24 18:16:21,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:21,849 INFO L225 Difference]: With dead ends: 882 [2020-09-24 18:16:21,850 INFO L226 Difference]: Without dead ends: 878 [2020-09-24 18:16:21,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:16:21,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-09-24 18:16:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 877. [2020-09-24 18:16:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-09-24 18:16:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 996 transitions. [2020-09-24 18:16:21,894 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 996 transitions. Word has length 162 [2020-09-24 18:16:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:21,895 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 996 transitions. [2020-09-24 18:16:21,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:16:21,895 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 996 transitions. [2020-09-24 18:16:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 18:16:21,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:21,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:21,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:16:21,908 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:21,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1858696707, now seen corresponding path program 1 times [2020-09-24 18:16:21,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:21,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463491960] [2020-09-24 18:16:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:21,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:22,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:22,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:23,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:23,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:25,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:25,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 18:16:25,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:16:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3303 [2020-09-24 18:16:25,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-09-24 18:16:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:25,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:25,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:25,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:25,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:25,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:25,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:16:25,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:25,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:25,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:25,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:25,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:25,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:25,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:25,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:25,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:16:25,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:25,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:25,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:25,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:25,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:25,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 18:16:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:25,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:25,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:25,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:25,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:16:25,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:25,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:25,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:25,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 18:16:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:25,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:25,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 18:16:25,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:16:25,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:25,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 18:16:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:25,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:25,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:25,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 18:16:25,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:25,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:16:25,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:25,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:25,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:25,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 18:16:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:25,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:25,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:25,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:25,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:16:25,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:25,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463491960] [2020-09-24 18:16:25,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:25,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:16:25,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147068446] [2020-09-24 18:16:25,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:16:25,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:25,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:16:25,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:16:25,627 INFO L87 Difference]: Start difference. First operand 877 states and 996 transitions. Second operand 8 states. [2020-09-24 18:16:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:27,101 INFO L93 Difference]: Finished difference Result 886 states and 1007 transitions. [2020-09-24 18:16:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:16:27,102 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-09-24 18:16:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:27,106 INFO L225 Difference]: With dead ends: 886 [2020-09-24 18:16:27,106 INFO L226 Difference]: Without dead ends: 364 [2020-09-24 18:16:27,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:16:27,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-09-24 18:16:27,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 307. [2020-09-24 18:16:27,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-09-24 18:16:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 324 transitions. [2020-09-24 18:16:27,127 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 324 transitions. Word has length 187 [2020-09-24 18:16:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:27,127 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 324 transitions. [2020-09-24 18:16:27,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:16:27,128 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 324 transitions. [2020-09-24 18:16:27,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 18:16:27,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:27,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:27,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:16:27,131 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:27,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:27,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1820316512, now seen corresponding path program 1 times [2020-09-24 18:16:27,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:27,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691986139] [2020-09-24 18:16:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:28,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:28,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-24 18:16:28,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:16:28,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-09-24 18:16:28,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-09-24 18:16:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:16:28,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:28,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:28,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:28,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:28,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:28,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:28,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:28,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:28,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:28,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:28,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:28,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:28,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:16:28,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:28,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:16:28,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 18:16:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:28,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:28,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:28,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:28,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:28,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:16:28,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:28,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:28,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 18:16:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:28,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:28,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:28,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:28,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:16:28,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:16:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:16:28,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:28,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691986139] [2020-09-24 18:16:28,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:28,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:16:28,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455684974] [2020-09-24 18:16:28,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:16:28,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:28,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:16:28,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:16:28,415 INFO L87 Difference]: Start difference. First operand 307 states and 324 transitions. Second operand 8 states. [2020-09-24 18:16:29,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:29,403 INFO L93 Difference]: Finished difference Result 368 states and 392 transitions. [2020-09-24 18:16:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:16:29,404 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 197 [2020-09-24 18:16:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:29,408 INFO L225 Difference]: With dead ends: 368 [2020-09-24 18:16:29,408 INFO L226 Difference]: Without dead ends: 307 [2020-09-24 18:16:29,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:16:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-24 18:16:29,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2020-09-24 18:16:29,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-09-24 18:16:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 323 transitions. [2020-09-24 18:16:29,428 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 323 transitions. Word has length 197 [2020-09-24 18:16:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:29,429 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 323 transitions. [2020-09-24 18:16:29,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:16:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 323 transitions. [2020-09-24 18:16:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-24 18:16:29,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:29,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:29,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:16:29,433 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:29,433 INFO L82 PathProgramCache]: Analyzing trace with hash 667967814, now seen corresponding path program 1 times [2020-09-24 18:16:29,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:29,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058910945] [2020-09-24 18:16:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:29,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:29,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:29,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-24 18:16:29,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-24 18:16:29,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-09-24 18:16:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:16:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:29,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:29,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:29,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:29,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:29,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:29,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:29,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:29,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:29,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:29,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:29,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:16:29,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:29,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 18:16:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:29,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:29,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:29,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:29,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:16:29,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:29,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-24 18:16:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:29,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:29,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:29,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:16:29,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:29,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:16:29,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:30,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:30,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:16:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:30,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:30,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 18:16:30,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:30,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:30,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:30,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:30,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:30,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:30,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-09-24 18:16:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:30,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:30,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:30,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:30,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:30,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:16:30,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:16:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:30,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058910945] [2020-09-24 18:16:30,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:30,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:16:30,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201423129] [2020-09-24 18:16:30,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:16:30,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:30,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:16:30,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:16:30,078 INFO L87 Difference]: Start difference. First operand 307 states and 323 transitions. Second operand 8 states. [2020-09-24 18:16:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:30,622 INFO L93 Difference]: Finished difference Result 353 states and 374 transitions. [2020-09-24 18:16:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:16:30,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-09-24 18:16:30,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:30,626 INFO L225 Difference]: With dead ends: 353 [2020-09-24 18:16:30,626 INFO L226 Difference]: Without dead ends: 304 [2020-09-24 18:16:30,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:16:30,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-24 18:16:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2020-09-24 18:16:30,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-09-24 18:16:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 317 transitions. [2020-09-24 18:16:30,649 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 317 transitions. Word has length 213 [2020-09-24 18:16:30,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:30,650 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 317 transitions. [2020-09-24 18:16:30,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:16:30,650 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 317 transitions. [2020-09-24 18:16:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 18:16:30,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:30,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:30,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:16:30,657 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:30,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1190108144, now seen corresponding path program 1 times [2020-09-24 18:16:30,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:30,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672386613] [2020-09-24 18:16:30,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:30,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:30,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:33,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:33,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-24 18:16:33,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:16:33,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2812 [2020-09-24 18:16:33,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:16:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-09-24 18:16:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:16:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:33,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:33,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:33,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:33,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:33,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:33,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:33,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:33,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:33,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:33,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:16:33,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 18:16:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:33,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:33,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:33,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:33,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:33,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:16:33,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:33,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:33,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 18:16:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:33,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:33,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 18:16:33,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 18:16:33,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:16:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 18:16:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:16:33,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:33,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:16:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:33,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:33,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:33,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:16:33,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:33,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:16:33,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:33,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:16:33,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:33,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:16:33,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:33,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:16:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:33,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:33,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:33,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 18:16:33,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:33,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:33,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:33,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:33,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672386613] [2020-09-24 18:16:33,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:33,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 18:16:33,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807289342] [2020-09-24 18:16:33,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:16:33,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:33,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:16:33,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:16:33,987 INFO L87 Difference]: Start difference. First operand 303 states and 317 transitions. Second operand 11 states. [2020-09-24 18:16:34,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:34,929 INFO L93 Difference]: Finished difference Result 350 states and 369 transitions. [2020-09-24 18:16:34,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:16:34,929 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 224 [2020-09-24 18:16:34,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:34,932 INFO L225 Difference]: With dead ends: 350 [2020-09-24 18:16:34,932 INFO L226 Difference]: Without dead ends: 289 [2020-09-24 18:16:34,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:16:34,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-09-24 18:16:34,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-09-24 18:16:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-09-24 18:16:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 300 transitions. [2020-09-24 18:16:34,954 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 300 transitions. Word has length 224 [2020-09-24 18:16:34,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:34,955 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 300 transitions. [2020-09-24 18:16:34,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:16:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 300 transitions. [2020-09-24 18:16:34,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-24 18:16:34,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:34,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:34,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:16:34,962 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:34,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:34,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1259094098, now seen corresponding path program 1 times [2020-09-24 18:16:34,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:34,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005641926] [2020-09-24 18:16:34,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:35,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:35,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:36,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:36,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-24 18:16:36,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:16:36,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-09-24 18:16:36,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:36,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:16:36,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 18:16:36,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-24 18:16:36,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:36,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:36,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:36,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:36,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:36,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:36,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:36,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:36,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:36,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:36,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:36,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:36,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:36,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:36,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 18:16:36,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:16:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:36,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:16:36,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 18:16:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:36,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:36,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:36,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:16:36,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:16:36,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 18:16:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:36,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:36,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:16:36,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 18:16:36,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:16:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:16:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:16:36,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:36,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:16:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:36,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:36,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:36,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:16:36,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:36,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:16:36,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:36,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:16:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:36,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:36,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 18:16:36,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:16:36,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:36,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:36,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:36,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:36,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:16:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:36,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:36,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:36,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:36,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:36,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:36,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:36,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:36,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:16:36,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:37,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005641926] [2020-09-24 18:16:37,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:37,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 18:16:37,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205548221] [2020-09-24 18:16:37,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:16:37,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:37,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:16:37,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:16:37,016 INFO L87 Difference]: Start difference. First operand 289 states and 300 transitions. Second operand 12 states. [2020-09-24 18:16:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:37,818 INFO L93 Difference]: Finished difference Result 334 states and 350 transitions. [2020-09-24 18:16:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:16:37,818 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 229 [2020-09-24 18:16:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:37,820 INFO L225 Difference]: With dead ends: 334 [2020-09-24 18:16:37,820 INFO L226 Difference]: Without dead ends: 287 [2020-09-24 18:16:37,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-09-24 18:16:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-24 18:16:37,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-09-24 18:16:37,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-09-24 18:16:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 297 transitions. [2020-09-24 18:16:37,836 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 297 transitions. Word has length 229 [2020-09-24 18:16:37,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:37,836 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 297 transitions. [2020-09-24 18:16:37,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:16:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 297 transitions. [2020-09-24 18:16:37,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-24 18:16:37,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:37,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:37,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:16:37,841 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:37,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:37,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1538319019, now seen corresponding path program 1 times [2020-09-24 18:16:37,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:37,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177873093] [2020-09-24 18:16:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:37,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:39,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:39,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-24 18:16:39,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:16:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-09-24 18:16:39,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-09-24 18:16:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:16:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:39,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:39,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:39,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:39,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:39,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:39,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:39,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:39,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:39,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:39,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:39,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:39,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:39,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:39,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:16:39,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:39,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:39,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 18:16:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:39,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:39,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:39,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:39,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:39,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:39,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:39,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:39,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 18:16:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:39,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:39,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:39,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 18:16:39,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:39,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 18:16:39,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-24 18:16:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:16:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:39,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:16:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:39,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:39,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:39,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:16:39,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:39,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:16:39,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:39,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:39,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:39,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:39,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:16:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:39,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:39,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:39,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 18:16:39,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:39,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:39,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:16:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:39,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:39,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:39,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:39,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:39,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:16:39,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:39,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:39,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:39,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177873093] [2020-09-24 18:16:39,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:39,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 18:16:39,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135809705] [2020-09-24 18:16:39,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:16:39,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:39,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:16:39,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:16:39,795 INFO L87 Difference]: Start difference. First operand 287 states and 297 transitions. Second operand 9 states. [2020-09-24 18:16:40,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:40,135 INFO L93 Difference]: Finished difference Result 342 states and 358 transitions. [2020-09-24 18:16:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:16:40,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 231 [2020-09-24 18:16:40,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:40,138 INFO L225 Difference]: With dead ends: 342 [2020-09-24 18:16:40,138 INFO L226 Difference]: Without dead ends: 295 [2020-09-24 18:16:40,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:16:40,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-24 18:16:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 290. [2020-09-24 18:16:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-09-24 18:16:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 300 transitions. [2020-09-24 18:16:40,151 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 300 transitions. Word has length 231 [2020-09-24 18:16:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:40,152 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 300 transitions. [2020-09-24 18:16:40,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:16:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 300 transitions. [2020-09-24 18:16:40,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-24 18:16:40,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:40,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:40,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:16:40,156 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:40,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:40,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1887644435, now seen corresponding path program 1 times [2020-09-24 18:16:40,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:40,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888883917] [2020-09-24 18:16:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:40,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:40,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:40,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:43,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:43,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 18:16:43,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:16:43,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3487 [2020-09-24 18:16:43,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-09-24 18:16:43,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:16:43,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:43,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:43,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:43,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:43,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:43,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:43,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:43,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:43,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:43,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:43,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:43,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:43,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:16:43,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:43,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:43,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 18:16:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:43,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:43,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:43,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:16:43,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:43,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:43,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:43,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 18:16:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:43,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:43,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:43,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 18:16:43,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:43,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:16:43,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:43,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:43,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:43,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:43,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:16:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:43,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:43,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:43,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:16:43,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:43,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:16:43,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:43,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:16:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:43,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:43,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:43,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 18:16:43,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:43,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:43,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:43,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:16:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:43,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:43,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:43,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:43,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:43,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:44,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888883917] [2020-09-24 18:16:44,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:44,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 18:16:44,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848168545] [2020-09-24 18:16:44,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:16:44,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:44,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:16:44,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:16:44,032 INFO L87 Difference]: Start difference. First operand 290 states and 300 transitions. Second operand 9 states. [2020-09-24 18:16:44,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:44,432 INFO L93 Difference]: Finished difference Result 312 states and 323 transitions. [2020-09-24 18:16:44,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:16:44,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2020-09-24 18:16:44,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:44,434 INFO L225 Difference]: With dead ends: 312 [2020-09-24 18:16:44,434 INFO L226 Difference]: Without dead ends: 307 [2020-09-24 18:16:44,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:16:44,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-24 18:16:44,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 292. [2020-09-24 18:16:44,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-09-24 18:16:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 301 transitions. [2020-09-24 18:16:44,448 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 301 transitions. Word has length 232 [2020-09-24 18:16:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:44,449 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 301 transitions. [2020-09-24 18:16:44,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:16:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 301 transitions. [2020-09-24 18:16:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-24 18:16:44,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:44,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:44,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 18:16:44,454 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:44,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:44,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1909428757, now seen corresponding path program 1 times [2020-09-24 18:16:44,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:44,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120201564] [2020-09-24 18:16:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:44,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:44,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:45,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:45,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:45,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:49,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:49,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-24 18:16:49,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:16:49,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:16:49,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:16:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-09-24 18:16:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 18:16:49,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:49,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:49,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:49,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:49,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:49,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:49,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:49,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:49,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:49,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:49,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:49,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:49,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:49,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:49,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 18:16:49,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:49,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:16:49,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:49,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 18:16:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:49,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:49,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:16:49,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:49,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:49,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:49,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:49,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:49,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 18:16:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:49,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:49,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 18:16:49,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:16:49,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:16:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 18:16:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:49,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:49,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:49,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:16:49,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:16:49,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:16:49,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:49,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:16:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:49,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:49,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 18:16:49,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:49,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:49,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:49,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:16:49,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:49,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 18:16:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:49,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:49,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:49,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:49,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:49,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:16:49,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:49,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120201564] [2020-09-24 18:16:49,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:49,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 18:16:49,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474342301] [2020-09-24 18:16:49,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:16:49,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:49,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:16:49,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:16:49,905 INFO L87 Difference]: Start difference. First operand 292 states and 301 transitions. Second operand 9 states. [2020-09-24 18:16:50,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:50,322 INFO L93 Difference]: Finished difference Result 318 states and 329 transitions. [2020-09-24 18:16:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:16:50,323 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 233 [2020-09-24 18:16:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:50,325 INFO L225 Difference]: With dead ends: 318 [2020-09-24 18:16:50,325 INFO L226 Difference]: Without dead ends: 263 [2020-09-24 18:16:50,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:16:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-24 18:16:50,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2020-09-24 18:16:50,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-09-24 18:16:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 267 transitions. [2020-09-24 18:16:50,337 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 267 transitions. Word has length 233 [2020-09-24 18:16:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:50,337 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 267 transitions. [2020-09-24 18:16:50,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:16:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 267 transitions. [2020-09-24 18:16:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 18:16:50,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:50,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:16:50,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 18:16:50,340 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:50,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:50,341 INFO L82 PathProgramCache]: Analyzing trace with hash -2094536828, now seen corresponding path program 1 times [2020-09-24 18:16:50,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:50,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999832514] [2020-09-24 18:16:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:51,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:51,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-24 18:16:51,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:16:51,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1227 [2020-09-24 18:16:51,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:16:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 236 [2020-09-24 18:16:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:16:51,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:51,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:51,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:51,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:51,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:16:51,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:51,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:16:51,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST