/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=BIGGEST --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/Problem12_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:26:50,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:26:50,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:26:50,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:26:50,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:26:50,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:26:50,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:26:50,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:26:50,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:26:50,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:26:50,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:26:50,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:26:50,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:26:50,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:26:50,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:26:50,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:26:50,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:26:50,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:26:50,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:26:50,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:26:50,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:26:50,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:26:50,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:26:50,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:26:50,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:26:50,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:26:50,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:26:50,805 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:26:50,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:26:50,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:26:50,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:26:50,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:26:50,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:26:50,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:26:50,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:26:50,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:26:50,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:26:50,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:26:50,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:26:50,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:26:50,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:26:50,823 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 [2020-10-12 13:26:50,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:26:50,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:26:50,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:26:50,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:26:50,870 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:26:50,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:26:50,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:26:50,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:26:50,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:26:50,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:26:50,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:26:50,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:26:50,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:26:50,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:26:50,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:26:50,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:26:50,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:26:50,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:26:50,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:26:50,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:26:50,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:26:50,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:26:50,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:26:50,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:26:50,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:26:50,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:26:50,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:26:50,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:26:50,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:26:50,877 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:26:51,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:26:51,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:26:51,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:26:51,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:26:51,268 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:26:51,268 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label40.c [2020-10-12 13:26:51,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0673bdd62/107ffcbfd47f4d889efa6dd176c205af/FLAGc3c2929d2 [2020-10-12 13:26:52,230 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:26:52,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label40.c [2020-10-12 13:26:52,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0673bdd62/107ffcbfd47f4d889efa6dd176c205af/FLAGc3c2929d2 [2020-10-12 13:26:52,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0673bdd62/107ffcbfd47f4d889efa6dd176c205af [2020-10-12 13:26:52,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:26:52,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:26:52,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:26:52,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:26:52,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:26:52,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:26:52" (1/1) ... [2020-10-12 13:26:52,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:52, skipping insertion in model container [2020-10-12 13:26:52,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:26:52" (1/1) ... [2020-10-12 13:26:52,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:26:52,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:26:54,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:26:54,354 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:26:54,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:26:55,019 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:26:55,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:55 WrapperNode [2020-10-12 13:26:55,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:26:55,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:26:55,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:26:55,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:26:55,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:55" (1/1) ... [2020-10-12 13:26:55,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:55" (1/1) ... [2020-10-12 13:26:55,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:55" (1/1) ... [2020-10-12 13:26:55,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:55" (1/1) ... [2020-10-12 13:26:55,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:55" (1/1) ... [2020-10-12 13:26:55,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:55" (1/1) ... [2020-10-12 13:26:55,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:55" (1/1) ... [2020-10-12 13:26:55,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:26:55,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:26:55,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:26:55,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:26:55,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:55" (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 [2020-10-12 13:26:55,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:26:55,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:26:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:26:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:26:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:26:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:26:55,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:26:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:26:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:26:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:26:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:26:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:26:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:26:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:26:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:26:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:26:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:27:00,853 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:27:00,854 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:27:00,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:27:00 BoogieIcfgContainer [2020-10-12 13:27:00,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:27:00,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:27:00,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:27:00,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:27:00,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:26:52" (1/3) ... [2020-10-12 13:27:00,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10510be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:27:00, skipping insertion in model container [2020-10-12 13:27:00,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:55" (2/3) ... [2020-10-12 13:27:00,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10510be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:27:00, skipping insertion in model container [2020-10-12 13:27:00,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:27:00" (3/3) ... [2020-10-12 13:27:00,876 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label40.c [2020-10-12 13:27:00,888 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:27:00,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:27:00,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:27:00,947 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:27:00,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:27:00,948 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:27:00,948 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:27:00,948 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:27:00,948 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:27:00,948 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:27:00,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:27:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:27:00,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 13:27:00,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:27:01,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:27:01,001 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:27:01,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:27:01,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1787696750, now seen corresponding path program 1 times [2020-10-12 13:27:01,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:27:01,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030832295] [2020-10-12 13:27:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:27:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:01,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:01,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 13:27:01,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:01,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-12 13:27:01,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:27:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:27:01,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 13:27:01,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:27:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:27:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:01,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:01,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:27:01,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:01,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 13:27:01,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:27:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:27:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:27:01,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:27:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:27:01,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030832295] [2020-10-12 13:27:01,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:27:01,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:27:01,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278047183] [2020-10-12 13:27:01,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:27:01,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:27:01,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:27:01,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:27:01,723 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:27:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:27:13,194 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-12 13:27:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:27:13,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-12 13:27:13,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:27:13,228 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:27:13,228 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:27:13,239 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 [2020-10-12 13:27:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:27:13,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-12 13:27:13,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-12 13:27:13,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-12 13:27:13,393 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 15 [2020-10-12 13:27:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:27:13,393 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-12 13:27:13,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:27:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-12 13:27:13,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 13:27:13,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:27:13,399 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:27:13,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:27:13,399 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:27:13,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:27:13,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1418122443, now seen corresponding path program 1 times [2020-10-12 13:27:13,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:27:13,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141601614] [2020-10-12 13:27:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:27:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:13,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:13,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:14,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:14,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 13:27:14,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:27:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-12 13:27:14,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:14,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:27:14,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:27:14,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:27:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:27:14,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:27:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:14,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:14,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:14,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:27:14,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:27:14,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:14,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:27:14,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:27:14,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:27:14,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:27:14,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:27:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:14,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:14,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:14,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:27:14,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:14,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-12 13:27:14,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:14,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:27:14,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:27:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:27:14,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:27:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:27:14,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141601614] [2020-10-12 13:27:14,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:27:14,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:27:14,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544547547] [2020-10-12 13:27:14,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:27:14,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:27:14,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:27:14,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:27:14,830 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 6 states. [2020-10-12 13:27:26,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:27:26,135 INFO L93 Difference]: Finished difference Result 4690 states and 7651 transitions. [2020-10-12 13:27:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 13:27:26,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-10-12 13:27:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:27:26,163 INFO L225 Difference]: With dead ends: 4690 [2020-10-12 13:27:26,164 INFO L226 Difference]: Without dead ends: 3143 [2020-10-12 13:27:26,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:27:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-10-12 13:27:26,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3125. [2020-10-12 13:27:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2020-10-12 13:27:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4443 transitions. [2020-10-12 13:27:26,298 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4443 transitions. Word has length 90 [2020-10-12 13:27:26,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:27:26,299 INFO L479 AbstractCegarLoop]: Abstraction has 3125 states and 4443 transitions. [2020-10-12 13:27:26,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:27:26,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4443 transitions. [2020-10-12 13:27:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 13:27:26,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:27:26,308 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:27:26,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:27:26,310 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:27:26,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:27:26,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1549682797, now seen corresponding path program 1 times [2020-10-12 13:27:26,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:27:26,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353590583] [2020-10-12 13:27:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:27:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:26,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:26,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:27,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:27,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 13:27:27,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:27:27,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-12 13:27:27,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:27,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:27:27,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:27:27,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:27:27,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:27,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:27:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:27,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:27,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:27,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:27:27,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:27,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:27:27,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:27,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:27:27,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:27:27,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:27:27,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:27,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:27:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:27,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:27:27,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-12 13:27:27,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:27:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:27:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:27:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:27:27,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353590583] [2020-10-12 13:27:27,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:27:27,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:27:27,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969403968] [2020-10-12 13:27:27,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:27:27,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:27:27,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:27:27,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:27:27,870 INFO L87 Difference]: Start difference. First operand 3125 states and 4443 transitions. Second operand 7 states. [2020-10-12 13:27:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:27:43,761 INFO L93 Difference]: Finished difference Result 9573 states and 13791 transitions. [2020-10-12 13:27:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:27:43,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-12 13:27:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:27:43,807 INFO L225 Difference]: With dead ends: 9573 [2020-10-12 13:27:43,808 INFO L226 Difference]: Without dead ends: 6454 [2020-10-12 13:27:43,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:27:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6454 states. [2020-10-12 13:27:44,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6454 to 6342. [2020-10-12 13:27:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6342 states. [2020-10-12 13:27:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6342 states to 6342 states and 8492 transitions. [2020-10-12 13:27:44,042 INFO L78 Accepts]: Start accepts. Automaton has 6342 states and 8492 transitions. Word has length 94 [2020-10-12 13:27:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:27:44,043 INFO L479 AbstractCegarLoop]: Abstraction has 6342 states and 8492 transitions. [2020-10-12 13:27:44,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:27:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 6342 states and 8492 transitions. [2020-10-12 13:27:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 13:27:44,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:27:44,056 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 13:27:44,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:27:44,056 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:27:44,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:27:44,059 INFO L82 PathProgramCache]: Analyzing trace with hash -155364553, now seen corresponding path program 1 times [2020-10-12 13:27:44,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:27:44,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076044273] [2020-10-12 13:27:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:27:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:44,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:45,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:45,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 13:27:45,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:27:45,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-10-12 13:27:45,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:45,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:27:45,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:27:45,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 13:27:45,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:45,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:27:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:45,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:45,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:27:45,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 13:27:45,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:27:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:27:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:27:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:27:45,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:27:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:46,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:46,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:27:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-12 13:27:46,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:27:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:27:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:27:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:27:46,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076044273] [2020-10-12 13:27:46,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:27:46,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:27:46,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366101757] [2020-10-12 13:27:46,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:27:46,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:27:46,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:27:46,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:27:46,438 INFO L87 Difference]: Start difference. First operand 6342 states and 8492 transitions. Second operand 7 states. [2020-10-12 13:28:03,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:28:03,423 INFO L93 Difference]: Finished difference Result 19682 states and 28721 transitions. [2020-10-12 13:28:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:28:03,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-12 13:28:03,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:28:03,526 INFO L225 Difference]: With dead ends: 19682 [2020-10-12 13:28:03,527 INFO L226 Difference]: Without dead ends: 13346 [2020-10-12 13:28:03,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:28:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13346 states. [2020-10-12 13:28:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13346 to 12981. [2020-10-12 13:28:04,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12981 states. [2020-10-12 13:28:04,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12981 states to 12981 states and 17259 transitions. [2020-10-12 13:28:04,758 INFO L78 Accepts]: Start accepts. Automaton has 12981 states and 17259 transitions. Word has length 128 [2020-10-12 13:28:04,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:28:04,759 INFO L479 AbstractCegarLoop]: Abstraction has 12981 states and 17259 transitions. [2020-10-12 13:28:04,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:28:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 12981 states and 17259 transitions. [2020-10-12 13:28:04,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-12 13:28:04,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:28:04,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:28:04,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:28:04,766 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:28:04,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:28:04,766 INFO L82 PathProgramCache]: Analyzing trace with hash 521327887, now seen corresponding path program 1 times [2020-10-12 13:28:04,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:28:04,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233429643] [2020-10-12 13:28:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:28:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:04,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:05,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:05,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-12 13:28:05,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:28:05,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1111 [2020-10-12 13:28:05,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:28:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:28:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:28:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:06,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:28:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:06,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:06,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:06,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:28:06,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:06,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:28:06,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:28:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:28:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:06,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:28:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:06,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:06,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:28:06,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:06,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 13:28:06,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:28:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:28:06,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:06,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:28:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:06,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:06,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:06,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:28:06,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:06,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-12 13:28:06,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:06,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:28:06,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:28:06,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 13:28:06,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:28:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:28:06,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233429643] [2020-10-12 13:28:06,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:28:06,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:28:06,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588405998] [2020-10-12 13:28:06,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:28:06,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:28:06,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:28:06,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:28:06,403 INFO L87 Difference]: Start difference. First operand 12981 states and 17259 transitions. Second operand 8 states. [2020-10-12 13:28:28,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:28:28,087 INFO L93 Difference]: Finished difference Result 34870 states and 52070 transitions. [2020-10-12 13:28:28,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:28:28,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-10-12 13:28:28,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:28:28,170 INFO L225 Difference]: With dead ends: 34870 [2020-10-12 13:28:28,170 INFO L226 Difference]: Without dead ends: 17857 [2020-10-12 13:28:28,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:28:28,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17857 states. [2020-10-12 13:28:28,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17857 to 17436. [2020-10-12 13:28:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17436 states. [2020-10-12 13:28:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17436 states to 17436 states and 23341 transitions. [2020-10-12 13:28:28,754 INFO L78 Accepts]: Start accepts. Automaton has 17436 states and 23341 transitions. Word has length 190 [2020-10-12 13:28:28,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:28:28,754 INFO L479 AbstractCegarLoop]: Abstraction has 17436 states and 23341 transitions. [2020-10-12 13:28:28,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:28:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 17436 states and 23341 transitions. [2020-10-12 13:28:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-12 13:28:28,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:28:28,760 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:28:28,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:28:28,761 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:28:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:28:28,761 INFO L82 PathProgramCache]: Analyzing trace with hash 789833282, now seen corresponding path program 1 times [2020-10-12 13:28:28,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:28:28,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171275971] [2020-10-12 13:28:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:28:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:29,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:29,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:29,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-12 13:28:29,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:28:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-10-12 13:28:29,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:28:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 246 [2020-10-12 13:28:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 13:28:29,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:30,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:28:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:30,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:30,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:30,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:28:30,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:28:30,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:28:30,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:30,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:28:30,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:30,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:28:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:30,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:30,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:30,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:28:30,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:30,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 13:28:30,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:28:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:28:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:28:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:30,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:30,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:30,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:28:30,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:30,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 13:28:30,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:30,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:28:30,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:30,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 13:28:30,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:30,368 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 13:28:30,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171275971] [2020-10-12 13:28:30,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:28:30,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:28:30,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409138981] [2020-10-12 13:28:30,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:28:30,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:28:30,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:28:30,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:28:30,373 INFO L87 Difference]: Start difference. First operand 17436 states and 23341 transitions. Second operand 5 states. [2020-10-12 13:28:42,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:28:42,661 INFO L93 Difference]: Finished difference Result 41208 states and 56176 transitions. [2020-10-12 13:28:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:28:42,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-12 13:28:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:28:42,756 INFO L225 Difference]: With dead ends: 41208 [2020-10-12 13:28:42,756 INFO L226 Difference]: Without dead ends: 24545 [2020-10-12 13:28:42,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:28:42,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24545 states. [2020-10-12 13:28:43,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24545 to 24512. [2020-10-12 13:28:43,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24512 states. [2020-10-12 13:28:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24512 states to 24512 states and 31467 transitions. [2020-10-12 13:28:43,470 INFO L78 Accepts]: Start accepts. Automaton has 24512 states and 31467 transitions. Word has length 249 [2020-10-12 13:28:43,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:28:43,470 INFO L479 AbstractCegarLoop]: Abstraction has 24512 states and 31467 transitions. [2020-10-12 13:28:43,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:28:43,471 INFO L276 IsEmpty]: Start isEmpty. Operand 24512 states and 31467 transitions. [2020-10-12 13:28:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-12 13:28:43,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:28:43,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:28:43,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:28:43,487 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:28:43,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:28:43,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1751589681, now seen corresponding path program 1 times [2020-10-12 13:28:43,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:28:43,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172832688] [2020-10-12 13:28:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:28:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:44,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:46,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:46,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-12 13:28:46,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:28:46,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3140 [2020-10-12 13:28:46,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:28:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:28:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-12 13:28:46,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:28:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:46,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:46,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:46,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:28:46,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:46,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:28:46,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:46,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:28:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:28:46,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:28:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:46,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:47,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:47,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:47,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:28:47,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:28:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-12 13:28:47,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:28:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:28:47,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-12 13:28:47,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:47,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:28:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:47,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:47,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-12 13:28:47,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:47,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-12 13:28:47,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:28:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:28:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-12 13:28:47,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 17 proven. 140 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:28:48,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172832688] [2020-10-12 13:28:48,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:28:48,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:28:48,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584320864] [2020-10-12 13:28:48,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:28:48,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:28:48,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:28:48,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:28:48,395 INFO L87 Difference]: Start difference. First operand 24512 states and 31467 transitions. Second operand 8 states. [2020-10-12 13:29:03,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:03,271 INFO L93 Difference]: Finished difference Result 47692 states and 61828 transitions. [2020-10-12 13:29:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:29:03,273 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 350 [2020-10-12 13:29:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:03,359 INFO L225 Difference]: With dead ends: 47692 [2020-10-12 13:29:03,359 INFO L226 Difference]: Without dead ends: 23953 [2020-10-12 13:29:03,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:29:03,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23953 states. [2020-10-12 13:29:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23953 to 23080. [2020-10-12 13:29:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23080 states. [2020-10-12 13:29:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23080 states to 23080 states and 27965 transitions. [2020-10-12 13:29:03,854 INFO L78 Accepts]: Start accepts. Automaton has 23080 states and 27965 transitions. Word has length 350 [2020-10-12 13:29:03,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:03,855 INFO L479 AbstractCegarLoop]: Abstraction has 23080 states and 27965 transitions. [2020-10-12 13:29:03,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:29:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand 23080 states and 27965 transitions. [2020-10-12 13:29:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-12 13:29:03,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:03,865 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:29:03,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:29:03,865 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:03,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:03,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1466936114, now seen corresponding path program 1 times [2020-10-12 13:29:03,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:03,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180928127] [2020-10-12 13:29:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:06,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:09,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:09,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-12 13:29:09,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:29:09,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-12 13:29:09,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:29:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:29:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:29:09,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:09,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:09,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:09,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:09,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:09,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:29:09,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:29:09,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:09,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:09,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:09,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:29:09,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-12 13:29:09,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:29:09,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:09,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 13:29:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:10,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:10,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-12 13:29:10,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 13:29:10,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-12 13:29:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:10,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 16 proven. 143 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:29:10,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180928127] [2020-10-12 13:29:10,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:10,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:29:10,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733661966] [2020-10-12 13:29:10,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:10,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:10,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:10,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:10,431 INFO L87 Difference]: Start difference. First operand 23080 states and 27965 transitions. Second operand 7 states. [2020-10-12 13:29:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:22,683 INFO L93 Difference]: Finished difference Result 45697 states and 56540 transitions. [2020-10-12 13:29:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:29:22,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-10-12 13:29:22,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:22,776 INFO L225 Difference]: With dead ends: 45697 [2020-10-12 13:29:22,776 INFO L226 Difference]: Without dead ends: 23390 [2020-10-12 13:29:22,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:29:22,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23390 states. [2020-10-12 13:29:23,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23390 to 23191. [2020-10-12 13:29:23,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23191 states. [2020-10-12 13:29:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23191 states to 23191 states and 28107 transitions. [2020-10-12 13:29:23,307 INFO L78 Accepts]: Start accepts. Automaton has 23191 states and 28107 transitions. Word has length 353 [2020-10-12 13:29:23,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:23,307 INFO L479 AbstractCegarLoop]: Abstraction has 23191 states and 28107 transitions. [2020-10-12 13:29:23,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:29:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 23191 states and 28107 transitions. [2020-10-12 13:29:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-12 13:29:23,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:23,323 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:29:23,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:29:23,324 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:23,324 INFO L82 PathProgramCache]: Analyzing trace with hash -199536466, now seen corresponding path program 1 times [2020-10-12 13:29:23,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:23,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743847605] [2020-10-12 13:29:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:23,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:23,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:26,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:27,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:28,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:28,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-12 13:29:28,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:29:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 13:29:28,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:28,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:29:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 246 [2020-10-12 13:29:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-12 13:29:28,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:28,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:28,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:28,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:28,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:28,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:29:28,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:28,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:28,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:28,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:28,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:29:28,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 13:29:28,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:28,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:29:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:28,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:28,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:28,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:29:28,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 13:29:28,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 13:29:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:28,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-12 13:29:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:28,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:29,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:29,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 13:29:29,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:29,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-12 13:29:29,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:29,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-12 13:29:29,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:29,513 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 246 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-12 13:29:29,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743847605] [2020-10-12 13:29:29,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:29,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:29:29,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029832295] [2020-10-12 13:29:29,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:29:29,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:29,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:29:29,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:29:29,516 INFO L87 Difference]: Start difference. First operand 23191 states and 28107 transitions. Second operand 6 states. [2020-10-12 13:29:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:49,426 INFO L93 Difference]: Finished difference Result 57110 states and 71027 transitions. [2020-10-12 13:29:49,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:29:49,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 401 [2020-10-12 13:29:49,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:49,558 INFO L225 Difference]: With dead ends: 57110 [2020-10-12 13:29:49,558 INFO L226 Difference]: Without dead ends: 34692 [2020-10-12 13:29:49,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:29:49,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34692 states. [2020-10-12 13:29:50,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34692 to 33891. [2020-10-12 13:29:50,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33891 states. [2020-10-12 13:29:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33891 states to 33891 states and 41593 transitions. [2020-10-12 13:29:50,346 INFO L78 Accepts]: Start accepts. Automaton has 33891 states and 41593 transitions. Word has length 401 [2020-10-12 13:29:50,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:50,347 INFO L479 AbstractCegarLoop]: Abstraction has 33891 states and 41593 transitions. [2020-10-12 13:29:50,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:29:50,347 INFO L276 IsEmpty]: Start isEmpty. Operand 33891 states and 41593 transitions. [2020-10-12 13:29:50,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-12 13:29:50,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:50,359 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:29:50,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:29:50,360 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:50,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:50,361 INFO L82 PathProgramCache]: Analyzing trace with hash -724457037, now seen corresponding path program 1 times [2020-10-12 13:29:50,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:50,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554129895] [2020-10-12 13:29:50,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:50,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:54,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:54,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-12 13:29:54,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:29:54,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4204 [2020-10-12 13:29:54,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:29:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:29:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-12 13:29:54,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:54,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:54,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:54,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:54,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:29:54,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:54,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:54,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:54,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:54,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:55,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:55,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:29:55,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 13:29:55,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:29:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:55,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:29:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:55,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:55,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:55,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:55,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 13:29:55,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 13:29:55,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:55,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:29:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:55,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-12 13:29:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:55,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:55,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 13:29:55,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-12 13:29:55,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-12 13:29:55,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 336 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 13:29:55,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554129895] [2020-10-12 13:29:55,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:55,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:29:55,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752842250] [2020-10-12 13:29:55,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:29:55,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:55,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:29:55,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:29:55,854 INFO L87 Difference]: Start difference. First operand 33891 states and 41593 transitions. Second operand 8 states. [2020-10-12 13:30:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:30:20,759 INFO L93 Difference]: Finished difference Result 97337 states and 124237 transitions. [2020-10-12 13:30:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:30:20,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 402 [2020-10-12 13:30:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:30:21,009 INFO L225 Difference]: With dead ends: 97337 [2020-10-12 13:30:21,009 INFO L226 Difference]: Without dead ends: 64219 [2020-10-12 13:30:21,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:30:21,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64219 states. [2020-10-12 13:30:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64219 to 61588. [2020-10-12 13:30:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61588 states. [2020-10-12 13:30:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61588 states to 61588 states and 78142 transitions. [2020-10-12 13:30:22,485 INFO L78 Accepts]: Start accepts. Automaton has 61588 states and 78142 transitions. Word has length 402 [2020-10-12 13:30:22,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:30:22,486 INFO L479 AbstractCegarLoop]: Abstraction has 61588 states and 78142 transitions. [2020-10-12 13:30:22,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:30:22,486 INFO L276 IsEmpty]: Start isEmpty. Operand 61588 states and 78142 transitions. [2020-10-12 13:30:22,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-12 13:30:22,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:30:22,500 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:30:22,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:30:22,501 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:30:22,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:30:22,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1727733546, now seen corresponding path program 1 times [2020-10-12 13:30:22,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:30:22,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123520673] [2020-10-12 13:30:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:30:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:22,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:22,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:25,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:25,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-12 13:30:25,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:30:25,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2715 [2020-10-12 13:30:25,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:25,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:25,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-12 13:30:25,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-12 13:30:25,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:30:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:25,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:25,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:25,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:30:25,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:25,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:30:25,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:30:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:25,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:30:25,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:30:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:25,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:25,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:30:25,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:25,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 13:30:25,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:30:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:25,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:30:25,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:25,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:30:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:25,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:25,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 13:30:25,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:25,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 13:30:25,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:30:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:30:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 13:30:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:25,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-12 13:30:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:30:25,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:30:25,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:30:25,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 13:30:25,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:30:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 13:30:25,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:30:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:30:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:30:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-12 13:30:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:30:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-12 13:30:26,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123520673] [2020-10-12 13:30:26,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:30:26,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:30:26,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447731257] [2020-10-12 13:30:26,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:30:26,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:30:26,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:30:26,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:30:26,068 INFO L87 Difference]: Start difference. First operand 61588 states and 78142 transitions. Second operand 7 states.