/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:44:21,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:44:21,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:44:21,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:44:21,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:44:21,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:44:21,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:44:21,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:44:21,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:44:21,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:44:21,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:44:21,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:44:21,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:44:21,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:44:21,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:44:21,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:44:21,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:44:21,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:44:21,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:44:21,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:44:21,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:44:21,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:44:21,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:44:21,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:44:21,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:44:21,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:44:21,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:44:21,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:44:21,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:44:21,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:44:21,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:44:21,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:44:21,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:44:21,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:44:21,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:44:21,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:44:21,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:44:21,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:44:21,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:44:21,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:44:21,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:44:21,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:44:21,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:44:21,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:44:21,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:44:21,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:44:21,783 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:44:21,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:44:21,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:44:21,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:44:21,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:44:21,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:44:21,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:44:21,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:44:21,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:44:21,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:44:21,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:44:21,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:44:21,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:44:21,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:44:21,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:44:21,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:44:21,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:44:21,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:44:21,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:44:21,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:44:21,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:44:21,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:44:21,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:44:21,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:44:21,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:44:21,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:44:22,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:44:22,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:44:22,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:44:22,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:44:22,190 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:44:22,191 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label57.c [2020-10-13 08:44:22,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f3b89b15/775c63d73d534a9ba45506cc557d98b8/FLAGa44fb3da9 [2020-10-13 08:44:23,202 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:44:23,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label57.c [2020-10-13 08:44:23,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f3b89b15/775c63d73d534a9ba45506cc557d98b8/FLAGa44fb3da9 [2020-10-13 08:44:23,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f3b89b15/775c63d73d534a9ba45506cc557d98b8 [2020-10-13 08:44:23,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:44:23,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:44:23,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:44:23,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:44:23,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:44:23,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:44:23" (1/1) ... [2020-10-13 08:44:23,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678b2c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:44:23, skipping insertion in model container [2020-10-13 08:44:23,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:44:23" (1/1) ... [2020-10-13 08:44:23,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:44:23,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:44:25,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:44:26,007 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:44:27,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:44:27,138 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:44:27,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:44:27 WrapperNode [2020-10-13 08:44:27,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:44:27,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:44:27,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:44:27,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:44:27,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:44:27" (1/1) ... [2020-10-13 08:44:27,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:44:27" (1/1) ... [2020-10-13 08:44:27,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:44:27" (1/1) ... [2020-10-13 08:44:27,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:44:27" (1/1) ... [2020-10-13 08:44:27,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:44:27" (1/1) ... [2020-10-13 08:44:27,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:44:27" (1/1) ... [2020-10-13 08:44:27,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:44:27" (1/1) ... [2020-10-13 08:44:27,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:44:27,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:44:27,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:44:27,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:44:27,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:44:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:44:27,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:44:27,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:44:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:44:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:44:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:44:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:44:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:44:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:44:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:44:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:44:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:44:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:44:27,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:44:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:44:27,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:44:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:44:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:44:40,115 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:44:40,116 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:44:40,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:44:40 BoogieIcfgContainer [2020-10-13 08:44:40,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:44:40,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:44:40,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:44:40,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:44:40,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:44:23" (1/3) ... [2020-10-13 08:44:40,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645123d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:44:40, skipping insertion in model container [2020-10-13 08:44:40,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:44:27" (2/3) ... [2020-10-13 08:44:40,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645123d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:44:40, skipping insertion in model container [2020-10-13 08:44:40,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:44:40" (3/3) ... [2020-10-13 08:44:40,141 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label57.c [2020-10-13 08:44:40,153 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:44:40,164 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:44:40,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:44:40,214 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:44:40,214 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:44:40,214 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:44:40,214 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:44:40,215 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:44:40,215 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:44:40,215 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:44:40,215 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:44:40,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:44:40,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 08:44:40,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:44:40,271 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] [2020-10-13 08:44:40,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:44:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:44:40,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1658720712, now seen corresponding path program 1 times [2020-10-13 08:44:40,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:44:40,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841165338] [2020-10-13 08:44:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:44:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:40,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:41,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:41,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:44:41,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:41,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-13 08:44:41,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:44:41,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:44:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:44:41,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:44:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:44:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:41,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:41,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:44:41,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:41,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 08:44:41,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:44:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:44:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:44:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:44:41,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841165338] [2020-10-13 08:44:41,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:44:41,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:44:41,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211576811] [2020-10-13 08:44:41,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:44:41,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:44:41,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:44:41,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:44:41,352 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:44:55,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:44:55,139 INFO L93 Difference]: Finished difference Result 3230 states and 5909 transitions. [2020-10-13 08:44:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:44:55,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-13 08:44:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:44:55,185 INFO L225 Difference]: With dead ends: 3230 [2020-10-13 08:44:55,185 INFO L226 Difference]: Without dead ends: 2026 [2020-10-13 08:44:55,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:44:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-13 08:44:55,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2009. [2020-10-13 08:44:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-13 08:44:55,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3291 transitions. [2020-10-13 08:44:55,507 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3291 transitions. Word has length 67 [2020-10-13 08:44:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:44:55,509 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3291 transitions. [2020-10-13 08:44:55,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:44:55,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3291 transitions. [2020-10-13 08:44:55,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 08:44:55,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:44:55,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:44:55,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:44:55,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:44:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:44:55,529 INFO L82 PathProgramCache]: Analyzing trace with hash -279302963, now seen corresponding path program 1 times [2020-10-13 08:44:55,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:44:55,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232086271] [2020-10-13 08:44:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:44:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:55,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:55,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:58,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:58,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:44:58,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:44:58,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2803 [2020-10-13 08:44:58,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:44:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:44:58,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:44:58,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:44:58,813 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 29 [2020-10-13 08:44:58,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:44:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:58,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:58,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:58,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:44:58,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:58,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 08:44:58,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:58,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:44:58,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:58,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:44:58,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:44:58,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:44:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:44:58,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:44:59,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:44:59,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:44:59,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:44:59,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 08:44:59,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:44:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:44:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:44:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:44:59,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:44:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:44:59,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232086271] [2020-10-13 08:44:59,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:44:59,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:44:59,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965581659] [2020-10-13 08:44:59,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:44:59,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:44:59,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:44:59,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:44:59,318 INFO L87 Difference]: Start difference. First operand 2009 states and 3291 transitions. Second operand 6 states. [2020-10-13 08:45:00,223 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-13 08:45:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:45:15,343 INFO L93 Difference]: Finished difference Result 4048 states and 6620 transitions. [2020-10-13 08:45:15,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 08:45:15,345 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-10-13 08:45:15,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:45:15,358 INFO L225 Difference]: With dead ends: 4048 [2020-10-13 08:45:15,359 INFO L226 Difference]: Without dead ends: 2013 [2020-10-13 08:45:15,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:45:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-10-13 08:45:15,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 2009. [2020-10-13 08:45:15,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-13 08:45:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3289 transitions. [2020-10-13 08:45:15,436 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3289 transitions. Word has length 142 [2020-10-13 08:45:15,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:45:15,437 INFO L479 AbstractCegarLoop]: Abstraction has 2009 states and 3289 transitions. [2020-10-13 08:45:15,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:45:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3289 transitions. [2020-10-13 08:45:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 08:45:15,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:15,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:45:15,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:45:15,441 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:15,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:15,442 INFO L82 PathProgramCache]: Analyzing trace with hash -173142449, now seen corresponding path program 1 times [2020-10-13 08:45:15,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:15,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931687104] [2020-10-13 08:45:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:15,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:15,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:15,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:16,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:17,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:17,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 08:45:17,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:45:17,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1922 [2020-10-13 08:45:17,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:45:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:45:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:17,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:17,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:17,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:17,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:17,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:45:17,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:17,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:17,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:17,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:17,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:45:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:17,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:17,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:45:17,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 08:45:17,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:45:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 08:45:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:45:17,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:45:17,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931687104] [2020-10-13 08:45:17,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:45:17,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:45:17,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767977508] [2020-10-13 08:45:17,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:45:17,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:17,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:45:17,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:45:17,736 INFO L87 Difference]: Start difference. First operand 2009 states and 3289 transitions. Second operand 5 states. [2020-10-13 08:45:38,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:45:38,339 INFO L93 Difference]: Finished difference Result 5799 states and 9634 transitions. [2020-10-13 08:45:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:45:38,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-13 08:45:38,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:45:38,364 INFO L225 Difference]: With dead ends: 5799 [2020-10-13 08:45:38,365 INFO L226 Difference]: Without dead ends: 3796 [2020-10-13 08:45:38,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:45:38,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2020-10-13 08:45:38,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3722. [2020-10-13 08:45:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2020-10-13 08:45:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5851 transitions. [2020-10-13 08:45:38,494 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5851 transitions. Word has length 149 [2020-10-13 08:45:38,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:45:38,495 INFO L479 AbstractCegarLoop]: Abstraction has 3722 states and 5851 transitions. [2020-10-13 08:45:38,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:45:38,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5851 transitions. [2020-10-13 08:45:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 08:45:38,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:45:38,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:45:38,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:45:38,504 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:45:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:45:38,505 INFO L82 PathProgramCache]: Analyzing trace with hash -905109875, now seen corresponding path program 1 times [2020-10-13 08:45:38,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:45:38,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131339631] [2020-10-13 08:45:38,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:45:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:38,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:39,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:40,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:41,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:41,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 08:45:41,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:45:41,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2463 [2020-10-13 08:45:41,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:45:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 08:45:41,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 08:45:41,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:41,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:45:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:41,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:41,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:45:41,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:41,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:45:41,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:45:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:45:41,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:45:41,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:45:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:45:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:45:41,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:45:41,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:45:41,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:45:41,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 08:45:41,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:45:41,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:45:41,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:45:41,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 08:45:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:45:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:45:41,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131339631] [2020-10-13 08:45:41,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:45:41,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:45:41,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462551324] [2020-10-13 08:45:41,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:45:41,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:45:41,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:45:41,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:45:41,454 INFO L87 Difference]: Start difference. First operand 3722 states and 5851 transitions. Second operand 6 states. [2020-10-13 08:46:07,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:07,313 INFO L93 Difference]: Finished difference Result 10717 states and 17146 transitions. [2020-10-13 08:46:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:46:07,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-10-13 08:46:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:07,347 INFO L225 Difference]: With dead ends: 10717 [2020-10-13 08:46:07,347 INFO L226 Difference]: Without dead ends: 6970 [2020-10-13 08:46:07,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:46:07,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6970 states. [2020-10-13 08:46:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6970 to 6964. [2020-10-13 08:46:07,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6964 states. [2020-10-13 08:46:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 9722 transitions. [2020-10-13 08:46:07,534 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 9722 transitions. Word has length 149 [2020-10-13 08:46:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:07,535 INFO L479 AbstractCegarLoop]: Abstraction has 6964 states and 9722 transitions. [2020-10-13 08:46:07,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:46:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 9722 transitions. [2020-10-13 08:46:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 08:46:07,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:07,538 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:46:07,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:46:07,539 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:07,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1217580695, now seen corresponding path program 1 times [2020-10-13 08:46:07,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:07,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651450306] [2020-10-13 08:46:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:07,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:08,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:08,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:46:08,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:46:08,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-13 08:46:08,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:08,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 08:46:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:46:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:08,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:08,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:08,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:08,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:08,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:08,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:46:08,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:08,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:08,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:08,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:08,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:46:08,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:08,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:46:08,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:08,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:46:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:46:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:46:08,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651450306] [2020-10-13 08:46:08,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:08,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:46:08,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718655523] [2020-10-13 08:46:08,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:46:08,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:08,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:46:08,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:46:08,858 INFO L87 Difference]: Start difference. First operand 6964 states and 9722 transitions. Second operand 5 states. [2020-10-13 08:46:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:31,839 INFO L93 Difference]: Finished difference Result 20432 states and 29096 transitions. [2020-10-13 08:46:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:46:31,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-13 08:46:31,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:31,924 INFO L225 Difference]: With dead ends: 20432 [2020-10-13 08:46:31,924 INFO L226 Difference]: Without dead ends: 13474 [2020-10-13 08:46:31,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:46:31,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13474 states. [2020-10-13 08:46:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13474 to 13466. [2020-10-13 08:46:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13466 states. [2020-10-13 08:46:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 17959 transitions. [2020-10-13 08:46:32,326 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 17959 transitions. Word has length 156 [2020-10-13 08:46:32,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:32,327 INFO L479 AbstractCegarLoop]: Abstraction has 13466 states and 17959 transitions. [2020-10-13 08:46:32,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:46:32,327 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 17959 transitions. [2020-10-13 08:46:32,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 08:46:32,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:32,332 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:46:32,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:46:32,333 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:32,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:32,333 INFO L82 PathProgramCache]: Analyzing trace with hash -631532415, now seen corresponding path program 1 times [2020-10-13 08:46:32,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:32,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993124948] [2020-10-13 08:46:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:32,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:34,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 08:46:34,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:46:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1861 [2020-10-13 08:46:34,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-13 08:46:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:46:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:34,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:34,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:34,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:34,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:34,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:34,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:46:34,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:34,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:34,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:34,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:34,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:46:34,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 08:46:34,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:46:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:46:34,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993124948] [2020-10-13 08:46:34,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:34,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:46:34,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157752316] [2020-10-13 08:46:34,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:46:34,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:34,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:46:34,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:46:34,739 INFO L87 Difference]: Start difference. First operand 13466 states and 17959 transitions. Second operand 5 states. [2020-10-13 08:46:50,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:46:50,849 INFO L93 Difference]: Finished difference Result 26990 states and 36024 transitions. [2020-10-13 08:46:50,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:46:50,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-13 08:46:50,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:46:50,897 INFO L225 Difference]: With dead ends: 26990 [2020-10-13 08:46:50,897 INFO L226 Difference]: Without dead ends: 13470 [2020-10-13 08:46:50,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:46:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13470 states. [2020-10-13 08:46:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13470 to 13466. [2020-10-13 08:46:51,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13466 states. [2020-10-13 08:46:51,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 17935 transitions. [2020-10-13 08:46:51,237 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 17935 transitions. Word has length 168 [2020-10-13 08:46:51,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:46:51,237 INFO L479 AbstractCegarLoop]: Abstraction has 13466 states and 17935 transitions. [2020-10-13 08:46:51,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:46:51,238 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 17935 transitions. [2020-10-13 08:46:51,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 08:46:51,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:46:51,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:46:51,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:46:51,242 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:46:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:46:51,243 INFO L82 PathProgramCache]: Analyzing trace with hash -575341499, now seen corresponding path program 1 times [2020-10-13 08:46:51,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:46:51,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905234490] [2020-10-13 08:46:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:46:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:52,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:52,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 08:46:52,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:46:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1429 [2020-10-13 08:46:52,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:46:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 08:46:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:46:52,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:52,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:46:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:52,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:52,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:46:52,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:52,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:46:52,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:52,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:46:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:46:52,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:46:52,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:46:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:46:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:46:53,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:46:53,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:46:53,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:46:53,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 08:46:53,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:46:53,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:46:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:46:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:46:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:46:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:46:53,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905234490] [2020-10-13 08:46:53,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:46:53,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:46:53,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575194744] [2020-10-13 08:46:53,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:46:53,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:46:53,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:46:53,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:46:53,158 INFO L87 Difference]: Start difference. First operand 13466 states and 17935 transitions. Second operand 5 states. [2020-10-13 08:47:10,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:10,362 INFO L93 Difference]: Finished difference Result 26953 states and 35928 transitions. [2020-10-13 08:47:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:47:10,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-13 08:47:10,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:47:10,423 INFO L225 Difference]: With dead ends: 26953 [2020-10-13 08:47:10,423 INFO L226 Difference]: Without dead ends: 13470 [2020-10-13 08:47:10,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:47:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13470 states. [2020-10-13 08:47:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13470 to 13466. [2020-10-13 08:47:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13466 states. [2020-10-13 08:47:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 17933 transitions. [2020-10-13 08:47:10,789 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 17933 transitions. Word has length 169 [2020-10-13 08:47:10,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:47:10,790 INFO L479 AbstractCegarLoop]: Abstraction has 13466 states and 17933 transitions. [2020-10-13 08:47:10,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:47:10,790 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 17933 transitions. [2020-10-13 08:47:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 08:47:10,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:47:10,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:47:10,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:47:10,796 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:47:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:47:10,796 INFO L82 PathProgramCache]: Analyzing trace with hash -19581559, now seen corresponding path program 1 times [2020-10-13 08:47:10,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:47:10,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611415009] [2020-10-13 08:47:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:47:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:10,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:11,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:11,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 08:47:11,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:47:11,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 990 [2020-10-13 08:47:11,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:11,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:47:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-13 08:47:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:47:11,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:12,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:47:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:12,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:12,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:12,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:47:12,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:12,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:47:12,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:12,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:12,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:47:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:12,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:12,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:47:12,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:12,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:47:12,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:47:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:12,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:47:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:47:12,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611415009] [2020-10-13 08:47:12,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:47:12,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:47:12,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58371538] [2020-10-13 08:47:12,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:47:12,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:47:12,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:47:12,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:47:12,274 INFO L87 Difference]: Start difference. First operand 13466 states and 17933 transitions. Second operand 5 states. [2020-10-13 08:47:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:47:37,016 INFO L93 Difference]: Finished difference Result 39143 states and 53417 transitions. [2020-10-13 08:47:37,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:47:37,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 08:47:37,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:47:37,132 INFO L225 Difference]: With dead ends: 39143 [2020-10-13 08:47:37,132 INFO L226 Difference]: Without dead ends: 25683 [2020-10-13 08:47:37,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:47:37,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25683 states. [2020-10-13 08:47:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25683 to 25654. [2020-10-13 08:47:37,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25654 states. [2020-10-13 08:47:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25654 states to 25654 states and 31990 transitions. [2020-10-13 08:47:37,814 INFO L78 Accepts]: Start accepts. Automaton has 25654 states and 31990 transitions. Word has length 172 [2020-10-13 08:47:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:47:37,814 INFO L479 AbstractCegarLoop]: Abstraction has 25654 states and 31990 transitions. [2020-10-13 08:47:37,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:47:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 25654 states and 31990 transitions. [2020-10-13 08:47:37,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-13 08:47:37,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:47:37,823 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:47:37,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:47:37,823 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:47:37,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:47:37,824 INFO L82 PathProgramCache]: Analyzing trace with hash -819905408, now seen corresponding path program 1 times [2020-10-13 08:47:37,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:47:37,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267565202] [2020-10-13 08:47:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:47:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:37,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:39,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:39,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-13 08:47:39,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:47:39,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1582 [2020-10-13 08:47:39,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:39,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:47:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-13 08:47:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:47:39,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:39,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:47:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:39,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:39,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:39,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:47:39,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:39,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:47:39,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:47:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:47:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:39,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:47:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:47:39,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:47:39,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:47:39,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:47:39,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:47:39,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 08:47:39,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:47:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:47:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:47:39,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-13 08:47:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:47:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:47:39,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267565202] [2020-10-13 08:47:39,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:47:39,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:47:39,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694113508] [2020-10-13 08:47:39,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:47:39,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:47:39,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:47:39,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:47:39,980 INFO L87 Difference]: Start difference. First operand 25654 states and 31990 transitions. Second operand 5 states. [2020-10-13 08:48:08,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:48:08,978 INFO L93 Difference]: Finished difference Result 62699 states and 81207 transitions. [2020-10-13 08:48:08,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:48:08,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-13 08:48:08,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:48:09,071 INFO L225 Difference]: With dead ends: 62699 [2020-10-13 08:48:09,072 INFO L226 Difference]: Without dead ends: 37051 [2020-10-13 08:48:09,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:48:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37051 states. [2020-10-13 08:48:09,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37051 to 37020. [2020-10-13 08:48:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37020 states. [2020-10-13 08:48:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37020 states to 37020 states and 45507 transitions. [2020-10-13 08:48:09,609 INFO L78 Accepts]: Start accepts. Automaton has 37020 states and 45507 transitions. Word has length 246 [2020-10-13 08:48:09,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:48:09,610 INFO L479 AbstractCegarLoop]: Abstraction has 37020 states and 45507 transitions. [2020-10-13 08:48:09,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:48:09,610 INFO L276 IsEmpty]: Start isEmpty. Operand 37020 states and 45507 transitions. [2020-10-13 08:48:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-13 08:48:09,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:48:09,621 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:48:09,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:48:09,622 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:48:09,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:48:09,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1177763076, now seen corresponding path program 1 times [2020-10-13 08:48:09,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:48:09,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959307308] [2020-10-13 08:48:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:48:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:09,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:10,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:12,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:12,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-13 08:48:12,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:48:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2445 [2020-10-13 08:48:12,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:12,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:48:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-10-13 08:48:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:48:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:48:12,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:48:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:12,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:12,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:48:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:48:12,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:48:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:48:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:12,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:48:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:48:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:48:12,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:48:12,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 08:48:12,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:48:12,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-13 08:48:12,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:48:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:48:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:48:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-13 08:48:12,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:48:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:48:12,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959307308] [2020-10-13 08:48:12,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:48:12,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:48:12,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248662845] [2020-10-13 08:48:12,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:48:12,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:48:12,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:48:12,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:48:12,713 INFO L87 Difference]: Start difference. First operand 37020 states and 45507 transitions. Second operand 5 states.