/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:25:59,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:25:59,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:25:59,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:25:59,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:25:59,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:25:59,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:25:59,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:25:59,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:25:59,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:25:59,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:25:59,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:25:59,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:25:59,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:25:59,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:25:59,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:25:59,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:25:59,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:25:59,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:25:59,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:25:59,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:25:59,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:25:59,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:25:59,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:25:59,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:25:59,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:25:59,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:25:59,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:25:59,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:25:59,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:25:59,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:25:59,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:25:59,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:25:59,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:25:59,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:25:59,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:25:59,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:25:59,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:25:59,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:25:59,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:25:59,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:25:59,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:25:59,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:25:59,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:25:59,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:25:59,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:25:59,817 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:25:59,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:25:59,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:25:59,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:25:59,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:25:59,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:25:59,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:25:59,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:25:59,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:25:59,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:25:59,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:25:59,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:25:59,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:25:59,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:25:59,819 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:25:59,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:25:59,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:25:59,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:25:59,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:25:59,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:25:59,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:25:59,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:25:59,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:25:59,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:25:59,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:25:59,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:26:00,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:26:00,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:26:00,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:26:00,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:26:00,212 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:26:00,213 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label51.c [2020-10-13 08:26:00,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d4af6770/a613c0ed05644ef4bdc2bf7811b1ac43/FLAG33c7c91bf [2020-10-13 08:26:01,256 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:26:01,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label51.c [2020-10-13 08:26:01,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d4af6770/a613c0ed05644ef4bdc2bf7811b1ac43/FLAG33c7c91bf [2020-10-13 08:26:01,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d4af6770/a613c0ed05644ef4bdc2bf7811b1ac43 [2020-10-13 08:26:01,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:26:01,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:26:01,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:26:01,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:26:01,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:26:01,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:26:01" (1/1) ... [2020-10-13 08:26:01,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143143ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:01, skipping insertion in model container [2020-10-13 08:26:01,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:26:01" (1/1) ... [2020-10-13 08:26:01,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:26:01,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:26:03,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:26:03,682 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:26:04,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:26:04,556 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:26:04,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:04 WrapperNode [2020-10-13 08:26:04,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:26:04,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:26:04,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:26:04,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:26:04,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:04" (1/1) ... [2020-10-13 08:26:04,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:04" (1/1) ... [2020-10-13 08:26:04,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:04" (1/1) ... [2020-10-13 08:26:04,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:04" (1/1) ... [2020-10-13 08:26:04,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:04" (1/1) ... [2020-10-13 08:26:04,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:04" (1/1) ... [2020-10-13 08:26:04,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:04" (1/1) ... [2020-10-13 08:26:04,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:26:04,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:26:04,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:26:04,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:26:04,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:26:04,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:26:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:26:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:26:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:26:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:26:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:26:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:26:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:26:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:26:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:26:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:26:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:26:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:26:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:26:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:26:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:26:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:26:10,610 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:26:10,612 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:26:10,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:26:10 BoogieIcfgContainer [2020-10-13 08:26:10,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:26:10,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:26:10,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:26:10,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:26:10,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:26:01" (1/3) ... [2020-10-13 08:26:10,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a42484f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:26:10, skipping insertion in model container [2020-10-13 08:26:10,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:04" (2/3) ... [2020-10-13 08:26:10,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a42484f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:26:10, skipping insertion in model container [2020-10-13 08:26:10,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:26:10" (3/3) ... [2020-10-13 08:26:10,640 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label51.c [2020-10-13 08:26:10,652 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:26:10,665 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:26:10,680 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:26:10,715 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:26:10,715 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:26:10,716 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:26:10,716 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:26:10,716 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:26:10,716 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:26:10,716 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:26:10,716 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:26:10,764 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:26:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 08:26:10,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:10,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:10,775 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:10,783 INFO L82 PathProgramCache]: Analyzing trace with hash 10531578, now seen corresponding path program 1 times [2020-10-13 08:26:10,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:10,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991643723] [2020-10-13 08:26:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:11,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:11,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 08:26:11,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:11,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-13 08:26:11,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:26:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:26:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:26:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:26:11,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:11,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:11,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:11,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:11,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:11,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 08:26:11,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:11,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:11,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:11,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:26:11,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:11,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991643723] [2020-10-13 08:26:11,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:26:11,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:26:11,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616706017] [2020-10-13 08:26:11,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:26:11,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:11,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:26:11,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:26:11,573 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-13 08:26:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:20,864 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-13 08:26:20,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:20,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-13 08:26:20,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:20,901 INFO L225 Difference]: With dead ends: 2487 [2020-10-13 08:26:20,901 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:26:20,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:20,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:26:21,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-13 08:26:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-13 08:26:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-13 08:26:21,088 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 17 [2020-10-13 08:26:21,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:21,089 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-13 08:26:21,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:26:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-13 08:26:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 08:26:21,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:21,099 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:21,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:26:21,099 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:21,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1810350299, now seen corresponding path program 1 times [2020-10-13 08:26:21,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:21,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98369640] [2020-10-13 08:26:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:21,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:22,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:22,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 08:26:22,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:26:22,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-13 08:26:22,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 08:26:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:26:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:22,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:22,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:22,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:22,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:22,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:26:22,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:22,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:22,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:22,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:22,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:26:22,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:22,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 08:26:22,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:26:22,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 08:26:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:22,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98369640] [2020-10-13 08:26:22,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:22,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:22,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924925094] [2020-10-13 08:26:22,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:22,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:22,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:22,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:22,491 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 5 states. [2020-10-13 08:26:33,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:33,372 INFO L93 Difference]: Finished difference Result 4695 states and 7516 transitions. [2020-10-13 08:26:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:33,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 08:26:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:33,395 INFO L225 Difference]: With dead ends: 4695 [2020-10-13 08:26:33,396 INFO L226 Difference]: Without dead ends: 3137 [2020-10-13 08:26:33,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:33,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states. [2020-10-13 08:26:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 3131. [2020-10-13 08:26:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3131 states. [2020-10-13 08:26:33,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4740 transitions. [2020-10-13 08:26:33,568 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4740 transitions. Word has length 96 [2020-10-13 08:26:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:33,569 INFO L479 AbstractCegarLoop]: Abstraction has 3131 states and 4740 transitions. [2020-10-13 08:26:33,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:33,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4740 transitions. [2020-10-13 08:26:33,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 08:26:33,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:33,579 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:33,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:26:33,579 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:33,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:33,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1990517355, now seen corresponding path program 1 times [2020-10-13 08:26:33,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:33,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654583014] [2020-10-13 08:26:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:34,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:34,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:26:34,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:34,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-13 08:26:34,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:34,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 08:26:34,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:26:34,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:34,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:34,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:34,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:34,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:34,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:34,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:26:34,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:34,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:34,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:34,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:34,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:26:34,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:34,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 08:26:34,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 08:26:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:34,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654583014] [2020-10-13 08:26:34,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:34,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:34,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483954103] [2020-10-13 08:26:34,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:34,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:34,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:34,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:34,921 INFO L87 Difference]: Start difference. First operand 3131 states and 4740 transitions. Second operand 5 states. [2020-10-13 08:26:46,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:46,281 INFO L93 Difference]: Finished difference Result 9365 states and 14362 transitions. [2020-10-13 08:26:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:46,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 08:26:46,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:46,320 INFO L225 Difference]: With dead ends: 9365 [2020-10-13 08:26:46,320 INFO L226 Difference]: Without dead ends: 6240 [2020-10-13 08:26:46,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2020-10-13 08:26:46,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 5467. [2020-10-13 08:26:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5467 states. [2020-10-13 08:26:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5467 states to 5467 states and 7393 transitions. [2020-10-13 08:26:46,519 INFO L78 Accepts]: Start accepts. Automaton has 5467 states and 7393 transitions. Word has length 104 [2020-10-13 08:26:46,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:46,520 INFO L479 AbstractCegarLoop]: Abstraction has 5467 states and 7393 transitions. [2020-10-13 08:26:46,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:46,520 INFO L276 IsEmpty]: Start isEmpty. Operand 5467 states and 7393 transitions. [2020-10-13 08:26:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 08:26:46,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:46,525 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:46,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:26:46,525 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:46,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1986553286, now seen corresponding path program 1 times [2020-10-13 08:26:46,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:46,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420101973] [2020-10-13 08:26:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:46,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:46,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:47,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:47,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:26:47,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:26:47,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-13 08:26:47,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 08:26:47,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:26:47,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:47,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:47,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:47,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:47,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:47,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:26:47,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:47,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:47,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:47,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:47,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:47,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:47,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:47,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:26:47,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:47,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:26:47,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:47,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:47,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:47,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:26:47,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:47,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420101973] [2020-10-13 08:26:47,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:47,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:47,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154511918] [2020-10-13 08:26:47,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:47,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:47,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:47,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:47,704 INFO L87 Difference]: Start difference. First operand 5467 states and 7393 transitions. Second operand 5 states. [2020-10-13 08:26:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:59,999 INFO L93 Difference]: Finished difference Result 14054 states and 19258 transitions. [2020-10-13 08:27:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:00,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 08:27:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:00,054 INFO L225 Difference]: With dead ends: 14054 [2020-10-13 08:27:00,054 INFO L226 Difference]: Without dead ends: 8593 [2020-10-13 08:27:00,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2020-10-13 08:27:00,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 7816. [2020-10-13 08:27:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7816 states. [2020-10-13 08:27:00,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 10638 transitions. [2020-10-13 08:27:00,296 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 10638 transitions. Word has length 105 [2020-10-13 08:27:00,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:00,298 INFO L479 AbstractCegarLoop]: Abstraction has 7816 states and 10638 transitions. [2020-10-13 08:27:00,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:00,299 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 10638 transitions. [2020-10-13 08:27:00,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 08:27:00,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:00,301 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:00,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:27:00,301 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:00,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:00,302 INFO L82 PathProgramCache]: Analyzing trace with hash -872507674, now seen corresponding path program 1 times [2020-10-13 08:27:00,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:00,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884512436] [2020-10-13 08:27:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:01,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:01,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:27:01,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:27:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-10-13 08:27:01,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 08:27:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:27:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:01,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:01,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:01,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:01,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:01,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:01,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:27:01,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:01,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:01,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:01,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:01,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:01,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 08:27:01,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 08:27:01,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 08:27:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:01,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884512436] [2020-10-13 08:27:01,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:01,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:27:01,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829824835] [2020-10-13 08:27:01,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:27:01,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:01,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:27:01,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:01,663 INFO L87 Difference]: Start difference. First operand 7816 states and 10638 transitions. Second operand 6 states. [2020-10-13 08:27:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:21,052 INFO L93 Difference]: Finished difference Result 24955 states and 36623 transitions. [2020-10-13 08:27:21,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:27:21,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-13 08:27:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:21,178 INFO L225 Difference]: With dead ends: 24955 [2020-10-13 08:27:21,179 INFO L226 Difference]: Without dead ends: 17145 [2020-10-13 08:27:21,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:27:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17145 states. [2020-10-13 08:27:21,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17145 to 17129. [2020-10-13 08:27:21,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17129 states. [2020-10-13 08:27:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17129 states to 17129 states and 24317 transitions. [2020-10-13 08:27:21,700 INFO L78 Accepts]: Start accepts. Automaton has 17129 states and 24317 transitions. Word has length 121 [2020-10-13 08:27:21,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:21,700 INFO L479 AbstractCegarLoop]: Abstraction has 17129 states and 24317 transitions. [2020-10-13 08:27:21,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:27:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 17129 states and 24317 transitions. [2020-10-13 08:27:21,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-13 08:27:21,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:21,711 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 08:27:21,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:27:21,712 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:21,712 INFO L82 PathProgramCache]: Analyzing trace with hash 323262306, now seen corresponding path program 1 times [2020-10-13 08:27:21,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:21,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026090199] [2020-10-13 08:27:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:21,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:22,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:24,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:24,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-13 08:27:24,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:27:24,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3160 [2020-10-13 08:27:24,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:24,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:24,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-13 08:27:24,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:27:24,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:25,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:25,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:25,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:25,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:25,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:27:25,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:25,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:25,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:25,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:25,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:25,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:25,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:27:25,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:25,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:27:25,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:25,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:25,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:25,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:25,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 08:27:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:25,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:25,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:25,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 08:27:25,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:25,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 08:27:25,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:25,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 08:27:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 08:27:25,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026090199] [2020-10-13 08:27:25,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:25,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:25,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197572650] [2020-10-13 08:27:25,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:25,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:25,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:25,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:25,437 INFO L87 Difference]: Start difference. First operand 17129 states and 24317 transitions. Second operand 5 states. [2020-10-13 08:27:42,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:42,699 INFO L93 Difference]: Finished difference Result 45895 states and 68142 transitions. [2020-10-13 08:27:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:42,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-13 08:27:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:42,860 INFO L225 Difference]: With dead ends: 45895 [2020-10-13 08:27:42,860 INFO L226 Difference]: Without dead ends: 28772 [2020-10-13 08:27:42,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28772 states. [2020-10-13 08:27:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28772 to 28760. [2020-10-13 08:27:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28760 states. [2020-10-13 08:27:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28760 states to 28760 states and 39494 transitions. [2020-10-13 08:27:43,897 INFO L78 Accepts]: Start accepts. Automaton has 28760 states and 39494 transitions. Word has length 233 [2020-10-13 08:27:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:43,898 INFO L479 AbstractCegarLoop]: Abstraction has 28760 states and 39494 transitions. [2020-10-13 08:27:43,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 28760 states and 39494 transitions. [2020-10-13 08:27:43,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-13 08:27:43,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:43,915 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:43,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:27:43,916 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:43,916 INFO L82 PathProgramCache]: Analyzing trace with hash -2096780014, now seen corresponding path program 1 times [2020-10-13 08:27:43,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:43,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936964511] [2020-10-13 08:27:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:45,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:45,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:48,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:48,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 08:27:48,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:27:48,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 08:27:48,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:48,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:48,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-13 08:27:48,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 08:27:48,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:49,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:49,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:49,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:49,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:49,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:27:49,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:49,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:49,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:49,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:49,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:49,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:49,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:27:49,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:49,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:27:49,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:49,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 08:27:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:49,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:49,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:49,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 08:27:49,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:49,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 08:27:49,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-13 08:27:49,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:49,489 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-13 08:27:49,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936964511] [2020-10-13 08:27:49,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:49,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:27:49,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307091724] [2020-10-13 08:27:49,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:27:49,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:49,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:27:49,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:49,493 INFO L87 Difference]: Start difference. First operand 28760 states and 39494 transitions. Second operand 6 states. [2020-10-13 08:28:09,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:09,922 INFO L93 Difference]: Finished difference Result 105496 states and 153055 transitions. [2020-10-13 08:28:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:28:09,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2020-10-13 08:28:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:10,336 INFO L225 Difference]: With dead ends: 105496 [2020-10-13 08:28:10,336 INFO L226 Difference]: Without dead ends: 76742 [2020-10-13 08:28:10,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:28:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76742 states. [2020-10-13 08:28:13,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76742 to 75199. [2020-10-13 08:28:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75199 states. [2020-10-13 08:28:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75199 states to 75199 states and 101648 transitions. [2020-10-13 08:28:13,811 INFO L78 Accepts]: Start accepts. Automaton has 75199 states and 101648 transitions. Word has length 257 [2020-10-13 08:28:13,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:13,812 INFO L479 AbstractCegarLoop]: Abstraction has 75199 states and 101648 transitions. [2020-10-13 08:28:13,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:28:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 75199 states and 101648 transitions. [2020-10-13 08:28:13,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2020-10-13 08:28:13,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:13,993 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:13,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:28:13,994 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:13,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:13,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1962722681, now seen corresponding path program 1 times [2020-10-13 08:28:13,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:13,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233829702] [2020-10-13 08:28:13,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:15,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:19,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:19,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 778 [2020-10-13 08:28:19,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:28:19,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 08:28:19,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:19,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:28:19,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:28:19,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 08:28:19,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:19,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:19,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:19,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:28:19,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:28:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:19,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:19,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:19,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:28:19,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:19,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-13 08:28:19,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:19,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-13 08:28:19,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:19,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-13 08:28:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:20,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:20,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-13 08:28:20,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:20,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-13 08:28:20,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:20,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 595 [2020-10-13 08:28:20,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:20,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:20,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:28:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:20,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:21,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:21,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 08:28:21,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:21,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 08:28:21,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:21,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:28:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:21,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:21,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:28:21,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:28:21,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:21,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:21,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 20 proven. 147 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:28:21,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233829702] [2020-10-13 08:28:21,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:21,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:28:21,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226252334] [2020-10-13 08:28:21,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:28:21,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:21,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:28:21,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:28:21,945 INFO L87 Difference]: Start difference. First operand 75199 states and 101648 transitions. Second operand 7 states. [2020-10-13 08:28:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:41,771 INFO L93 Difference]: Finished difference Result 152515 states and 209810 transitions. [2020-10-13 08:28:41,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:28:41,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 762 [2020-10-13 08:28:41,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:42,119 INFO L225 Difference]: With dead ends: 152515 [2020-10-13 08:28:42,119 INFO L226 Difference]: Without dead ends: 78089 [2020-10-13 08:28:42,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:28:42,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78089 states. [2020-10-13 08:28:46,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78089 to 77165. [2020-10-13 08:28:46,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77165 states. [2020-10-13 08:28:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77165 states to 77165 states and 104605 transitions. [2020-10-13 08:28:46,398 INFO L78 Accepts]: Start accepts. Automaton has 77165 states and 104605 transitions. Word has length 762 [2020-10-13 08:28:46,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:46,399 INFO L479 AbstractCegarLoop]: Abstraction has 77165 states and 104605 transitions. [2020-10-13 08:28:46,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:28:46,399 INFO L276 IsEmpty]: Start isEmpty. Operand 77165 states and 104605 transitions. [2020-10-13 08:28:46,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2020-10-13 08:28:46,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:46,517 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:46,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:28:46,518 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:46,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:46,518 INFO L82 PathProgramCache]: Analyzing trace with hash 471825566, now seen corresponding path program 1 times [2020-10-13 08:28:46,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:46,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578210874] [2020-10-13 08:28:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:47,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:50,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:50,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 779 [2020-10-13 08:28:50,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:28:50,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3638 [2020-10-13 08:28:50,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:28:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:28:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-13 08:28:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:50,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:50,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:50,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:50,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:50,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 08:28:50,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:50,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:28:50,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:50,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:50,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:50,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:50,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:28:50,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-13 08:28:50,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 08:28:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:50,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 08:28:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:51,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:51,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-13 08:28:51,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:51,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-13 08:28:51,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:51,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:51,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 595 [2020-10-13 08:28:51,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:51,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:51,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:28:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:51,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:51,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:51,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 08:28:51,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 08:28:51,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:51,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:28:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:51,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:28:51,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:51,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:28:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 20 proven. 148 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:28:52,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578210874] [2020-10-13 08:28:52,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:52,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:28:52,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479519266] [2020-10-13 08:28:52,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:28:52,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:52,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:28:52,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:28:52,319 INFO L87 Difference]: Start difference. First operand 77165 states and 104605 transitions. Second operand 7 states. [2020-10-13 08:29:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:14,051 INFO L93 Difference]: Finished difference Result 183839 states and 255013 transitions. [2020-10-13 08:29:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:29:14,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 763 [2020-10-13 08:29:14,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:14,473 INFO L225 Difference]: With dead ends: 183839 [2020-10-13 08:29:14,474 INFO L226 Difference]: Without dead ends: 107447 [2020-10-13 08:29:14,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:29:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107447 states. [2020-10-13 08:29:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107447 to 100367. [2020-10-13 08:29:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100367 states. [2020-10-13 08:29:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100367 states to 100367 states and 130954 transitions. [2020-10-13 08:29:17,099 INFO L78 Accepts]: Start accepts. Automaton has 100367 states and 130954 transitions. Word has length 763 [2020-10-13 08:29:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:17,100 INFO L479 AbstractCegarLoop]: Abstraction has 100367 states and 130954 transitions. [2020-10-13 08:29:17,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:29:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 100367 states and 130954 transitions. [2020-10-13 08:29:17,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2020-10-13 08:29:17,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:17,242 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:29:17,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:29:17,243 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:17,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:17,244 INFO L82 PathProgramCache]: Analyzing trace with hash -655337901, now seen corresponding path program 1 times [2020-10-13 08:29:17,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:17,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35038445] [2020-10-13 08:29:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:17,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:22,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:22,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 788 [2020-10-13 08:29:22,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:29:22,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-13 08:29:22,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:22,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:29:22,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:29:22,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 08:29:22,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:22,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:22,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:22,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:22,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:22,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:29:22,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:22,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:29:22,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:22,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:22,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:22,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:22,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 08:29:22,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-13 08:29:22,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:29:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 08:29:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 08:29:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:23,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:23,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-13 08:29:23,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:23,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-13 08:29:23,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 595 [2020-10-13 08:29:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:23,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:29:23,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:29:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:23,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:23,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 08:29:23,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 08:29:23,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:23,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:29:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:29:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:23,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:23,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:23,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:29:23,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:23,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:29:23,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:23,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:23,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 20 proven. 157 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:29:26,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35038445] [2020-10-13 08:29:26,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:29:26,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:29:26,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729139938] [2020-10-13 08:29:26,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:29:26,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:26,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:29:26,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:29:26,588 INFO L87 Difference]: Start difference. First operand 100367 states and 130954 transitions. Second operand 7 states.