/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_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:16:43,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:16:43,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:16:43,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:16:43,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:16:43,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:16:43,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:16:43,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:16:43,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:16:43,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:16:43,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:16:43,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:16:43,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:16:43,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:16:43,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:16:43,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:16:43,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:16:43,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:16:43,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:16:43,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:16:43,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:16:43,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:16:43,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:16:43,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:16:43,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:16:43,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:16:43,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:16:43,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:16:43,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:16:43,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:16:43,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:16:43,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:16:43,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:16:43,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:16:43,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:16:43,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:16:43,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:16:43,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:16:43,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:16:43,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:16:43,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:16:43,675 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 08:16:43,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:16:43,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:16:43,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:16:43,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:16:43,707 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:16:43,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:16:43,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:16:43,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:16:43,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:16:43,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:16:43,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:16:43,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:16:43,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:16:43,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:16:43,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:16:43,710 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:16:43,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:16:43,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:16:43,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:16:43,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:16:43,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:16:43,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:16:43,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:16:43,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:16:43,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:16:43,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:16:43,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:16:43,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:16:43,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:16:43,712 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 08:16:44,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:16:44,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:16:44,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:16:44,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:16:44,083 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:16:44,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2020-10-13 08:16:44,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95e3bd7ad/ff9c2901d2734fcba967c08b232935d0/FLAGe5b828983 [2020-10-13 08:16:44,920 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:16:44,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label12.c [2020-10-13 08:16:44,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95e3bd7ad/ff9c2901d2734fcba967c08b232935d0/FLAGe5b828983 [2020-10-13 08:16:44,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95e3bd7ad/ff9c2901d2734fcba967c08b232935d0 [2020-10-13 08:16:45,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:16:45,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:16:45,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:16:45,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:16:45,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:16:45,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:16:44" (1/1) ... [2020-10-13 08:16:45,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191ab6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:45, skipping insertion in model container [2020-10-13 08:16:45,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:16:44" (1/1) ... [2020-10-13 08:16:45,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:16:45,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:16:46,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:16:46,870 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:16:47,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:16:47,628 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:16:47,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:47 WrapperNode [2020-10-13 08:16:47,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:16:47,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:16:47,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:16:47,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:16:47,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:47" (1/1) ... [2020-10-13 08:16:47,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:47" (1/1) ... [2020-10-13 08:16:47,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:47" (1/1) ... [2020-10-13 08:16:47,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:47" (1/1) ... [2020-10-13 08:16:47,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:47" (1/1) ... [2020-10-13 08:16:47,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:47" (1/1) ... [2020-10-13 08:16:47,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:47" (1/1) ... [2020-10-13 08:16:47,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:16:47,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:16:47,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:16:47,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:16:47,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:47" (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 08:16:48,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:16:48,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:16:48,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:16:48,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:16:48,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:16:48,036 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:16:48,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:16:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:16:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:16:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:16:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:16:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:16:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:16:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:16:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:16:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:16:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:16:52,843 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:16:52,844 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:16:52,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:16:52 BoogieIcfgContainer [2020-10-13 08:16:52,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:16:52,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:16:52,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:16:52,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:16:52,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:16:44" (1/3) ... [2020-10-13 08:16:52,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60db8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:16:52, skipping insertion in model container [2020-10-13 08:16:52,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:16:47" (2/3) ... [2020-10-13 08:16:52,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60db8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:16:52, skipping insertion in model container [2020-10-13 08:16:52,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:16:52" (3/3) ... [2020-10-13 08:16:52,876 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label12.c [2020-10-13 08:16:52,887 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:16:52,899 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:16:52,914 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:16:52,941 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:16:52,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:16:52,941 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:16:52,941 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:16:52,941 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:16:52,941 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:16:52,942 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:16:52,942 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:16:52,977 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:16:52,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 08:16:52,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:52,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:16:52,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:52,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:52,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1107355747, now seen corresponding path program 1 times [2020-10-13 08:16:53,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:53,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982780072] [2020-10-13 08:16:53,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:53,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:53,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:16:53,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:53,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-13 08:16:53,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:16:53,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:16:53,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:16:53,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:16:53,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:53,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:53,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:53,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:53,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:16:53,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:53,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:53,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:53,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:16:53,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:53,949 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 08:16:53,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982780072] [2020-10-13 08:16:53,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:16:53,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:16:53,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257144708] [2020-10-13 08:16:53,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:53,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:53,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:53,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:53,979 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-13 08:17:02,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:02,514 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:17:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:17:02,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 08:17:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:02,575 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:17:02,575 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:17:02,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:17:02,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:17:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:17:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:17:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-13 08:17:02,789 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 64 [2020-10-13 08:17:02,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:02,790 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-13 08:17:02,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:17:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-13 08:17:02,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 08:17:02,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:02,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 08:17:02,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:17:02,807 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:02,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1335760101, now seen corresponding path program 1 times [2020-10-13 08:17:02,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:02,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125424484] [2020-10-13 08:17:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:02,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:02,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:03,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:03,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:17:03,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:03,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-10-13 08:17:03,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:17:03,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:17:03,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:17:03,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:03,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:03,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:03,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:03,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:17:03,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:03,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:03,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:04,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:04,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:04,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:17:04,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:04,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 08:17:04,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:17:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:17:04,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125424484] [2020-10-13 08:17:04,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:04,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:17:04,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171189178] [2020-10-13 08:17:04,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:17:04,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:04,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:17:04,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:17:04,164 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-13 08:17:10,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:10,824 INFO L93 Difference]: Finished difference Result 3162 states and 5113 transitions. [2020-10-13 08:17:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:17:10,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-13 08:17:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:10,836 INFO L225 Difference]: With dead ends: 3162 [2020-10-13 08:17:10,837 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:17:10,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:17:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:17:10,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:17:10,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:17:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2333 transitions. [2020-10-13 08:17:10,885 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2333 transitions. Word has length 139 [2020-10-13 08:17:10,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:10,886 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2333 transitions. [2020-10-13 08:17:10,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:17:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2333 transitions. [2020-10-13 08:17:10,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 08:17:10,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:10,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 08:17:10,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:17:10,889 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:10,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:10,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1491253192, now seen corresponding path program 1 times [2020-10-13 08:17:10,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:10,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436152838] [2020-10-13 08:17:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:10,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:12,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:12,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 08:17:12,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:12,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-13 08:17:12,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:12,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:12,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:17:12,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:17:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:12,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:12,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:12,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:12,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:12,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:12,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:17:12,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:12,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:12,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:12,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:17:12,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:12,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:12,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:12,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:17:12,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:12,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:17:12,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:17:12,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:17:12,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436152838] [2020-10-13 08:17:12,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:12,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:17:12,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848716445] [2020-10-13 08:17:12,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:17:12,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:12,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:17:12,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:17:12,341 INFO L87 Difference]: Start difference. First operand 1553 states and 2333 transitions. Second operand 5 states. [2020-10-13 08:17:21,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:21,420 INFO L93 Difference]: Finished difference Result 4672 states and 7091 transitions. [2020-10-13 08:17:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:17:21,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-13 08:17:21,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:21,439 INFO L225 Difference]: With dead ends: 4672 [2020-10-13 08:17:21,439 INFO L226 Difference]: Without dead ends: 3125 [2020-10-13 08:17:21,444 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 08:17:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-13 08:17:21,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-13 08:17:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 08:17:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4303 transitions. [2020-10-13 08:17:21,521 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4303 transitions. Word has length 140 [2020-10-13 08:17:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:21,522 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4303 transitions. [2020-10-13 08:17:21,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:17:21,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4303 transitions. [2020-10-13 08:17:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 08:17:21,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:21,525 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:21,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:17:21,526 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:21,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:21,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1191839977, now seen corresponding path program 1 times [2020-10-13 08:17:21,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:21,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643877818] [2020-10-13 08:17:21,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:21,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:22,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:22,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 08:17:22,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:22,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-13 08:17:22,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:22,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:22,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 08:17:22,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:17:22,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:22,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:22,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:22,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:22,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:17:22,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:22,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:22,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:22,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:22,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:17:22,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:22,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:17:22,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:22,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:22,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:22,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:17:22,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:17:22,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643877818] [2020-10-13 08:17:22,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:22,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:17:22,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263886957] [2020-10-13 08:17:22,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:17:22,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:22,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:17:22,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:17:22,528 INFO L87 Difference]: Start difference. First operand 3109 states and 4303 transitions. Second operand 5 states. [2020-10-13 08:17:32,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:32,588 INFO L93 Difference]: Finished difference Result 9341 states and 13147 transitions. [2020-10-13 08:17:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:17:32,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-13 08:17:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:32,628 INFO L225 Difference]: With dead ends: 9341 [2020-10-13 08:17:32,628 INFO L226 Difference]: Without dead ends: 6238 [2020-10-13 08:17:32,638 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 08:17:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2020-10-13 08:17:32,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6218. [2020-10-13 08:17:32,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6218 states. [2020-10-13 08:17:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 8550 transitions. [2020-10-13 08:17:32,800 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 8550 transitions. Word has length 153 [2020-10-13 08:17:32,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:32,801 INFO L479 AbstractCegarLoop]: Abstraction has 6218 states and 8550 transitions. [2020-10-13 08:17:32,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:17:32,801 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 8550 transitions. [2020-10-13 08:17:32,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 08:17:32,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:32,804 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:32,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:17:32,805 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:32,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1116349529, now seen corresponding path program 1 times [2020-10-13 08:17:32,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:32,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727062698] [2020-10-13 08:17:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:33,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:33,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:33,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 08:17:33,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:33,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-13 08:17:33,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 08:17:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:17:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:33,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:33,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:33,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:33,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:33,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:17:33,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:33,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:33,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:33,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:33,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:33,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:33,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:33,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:33,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 08:17:33,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:17:33,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 08:17:33,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:17:33,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727062698] [2020-10-13 08:17:33,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:33,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:17:33,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606451516] [2020-10-13 08:17:33,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:17:33,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:33,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:17:33,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:17:33,961 INFO L87 Difference]: Start difference. First operand 6218 states and 8550 transitions. Second operand 5 states. [2020-10-13 08:17:43,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:43,706 INFO L93 Difference]: Finished difference Result 15556 states and 22217 transitions. [2020-10-13 08:17:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:17:43,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-13 08:17:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:43,758 INFO L225 Difference]: With dead ends: 15556 [2020-10-13 08:17:43,758 INFO L226 Difference]: Without dead ends: 9344 [2020-10-13 08:17:43,777 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 08:17:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9344 states. [2020-10-13 08:17:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9344 to 9332. [2020-10-13 08:17:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9332 states. [2020-10-13 08:17:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9332 states to 9332 states and 12530 transitions. [2020-10-13 08:17:44,099 INFO L78 Accepts]: Start accepts. Automaton has 9332 states and 12530 transitions. Word has length 161 [2020-10-13 08:17:44,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:44,099 INFO L479 AbstractCegarLoop]: Abstraction has 9332 states and 12530 transitions. [2020-10-13 08:17:44,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:17:44,100 INFO L276 IsEmpty]: Start isEmpty. Operand 9332 states and 12530 transitions. [2020-10-13 08:17:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 08:17:44,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:44,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:44,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:17:44,105 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:44,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:44,108 INFO L82 PathProgramCache]: Analyzing trace with hash -552151827, now seen corresponding path program 1 times [2020-10-13 08:17:44,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:44,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386389072] [2020-10-13 08:17:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:44,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:44,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:45,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:45,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 08:17:45,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:45,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-10-13 08:17:45,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:17:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:17:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:45,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:45,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:45,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:45,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:45,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:17:45,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:45,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:45,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:45,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:45,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:45,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:17:45,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:17:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:17:45,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:17:45,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386389072] [2020-10-13 08:17:45,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:45,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:17:45,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209962368] [2020-10-13 08:17:45,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:17:45,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:45,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:17:45,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:17:45,392 INFO L87 Difference]: Start difference. First operand 9332 states and 12530 transitions. Second operand 5 states. [2020-10-13 08:17:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:55,930 INFO L93 Difference]: Finished difference Result 27964 states and 38296 transitions. [2020-10-13 08:17:55,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:17:55,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-13 08:17:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:56,003 INFO L225 Difference]: With dead ends: 27964 [2020-10-13 08:17:56,004 INFO L226 Difference]: Without dead ends: 18638 [2020-10-13 08:17:56,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:17:56,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18638 states. [2020-10-13 08:17:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18638 to 18626. [2020-10-13 08:17:56,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18626 states. [2020-10-13 08:17:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18626 states to 18626 states and 23280 transitions. [2020-10-13 08:17:56,482 INFO L78 Accepts]: Start accepts. Automaton has 18626 states and 23280 transitions. Word has length 167 [2020-10-13 08:17:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:56,483 INFO L479 AbstractCegarLoop]: Abstraction has 18626 states and 23280 transitions. [2020-10-13 08:17:56,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:17:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 18626 states and 23280 transitions. [2020-10-13 08:17:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-13 08:17:56,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:56,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:56,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:17:56,492 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:56,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:56,493 INFO L82 PathProgramCache]: Analyzing trace with hash 2038485047, now seen corresponding path program 1 times [2020-10-13 08:17:56,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:56,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835504986] [2020-10-13 08:17:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:56,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:56,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:56,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:00,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:01,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:01,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-13 08:18:01,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:18:01,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 08:18:01,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:01,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:18:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:18:01,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:01,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:01,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:01,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:01,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:01,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:01,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:18:01,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:01,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:01,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:01,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:01,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:01,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:18:01,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:01,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 08:18:01,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:01,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:01,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:01,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:01,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 08:18:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:01,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:01,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:01,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:18:01,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:18:01,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:18:01,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 08:18:01,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835504986] [2020-10-13 08:18:01,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:01,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:01,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384681753] [2020-10-13 08:18:01,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:01,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:01,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:01,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:01,964 INFO L87 Difference]: Start difference. First operand 18626 states and 23280 transitions. Second operand 5 states. [2020-10-13 08:18:09,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:09,169 INFO L93 Difference]: Finished difference Result 37270 states and 46675 transitions. [2020-10-13 08:18:09,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:09,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-13 08:18:09,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:09,231 INFO L225 Difference]: With dead ends: 37270 [2020-10-13 08:18:09,231 INFO L226 Difference]: Without dead ends: 18638 [2020-10-13 08:18:09,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18638 states. [2020-10-13 08:18:09,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18638 to 18626. [2020-10-13 08:18:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18626 states. [2020-10-13 08:18:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18626 states to 18626 states and 23276 transitions. [2020-10-13 08:18:09,673 INFO L78 Accepts]: Start accepts. Automaton has 18626 states and 23276 transitions. Word has length 230 [2020-10-13 08:18:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:09,674 INFO L479 AbstractCegarLoop]: Abstraction has 18626 states and 23276 transitions. [2020-10-13 08:18:09,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 18626 states and 23276 transitions. [2020-10-13 08:18:09,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-13 08:18:09,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:09,692 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:09,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:18:09,693 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:09,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:09,693 INFO L82 PathProgramCache]: Analyzing trace with hash -680134410, now seen corresponding path program 1 times [2020-10-13 08:18:09,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:09,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942020780] [2020-10-13 08:18:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:11,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:14,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:14,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 08:18:14,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:18:14,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4707 [2020-10-13 08:18:14,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-13 08:18:14,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:18:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:14,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:14,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:14,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:14,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:14,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:18:14,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:14,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:14,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:14,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:14,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:14,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:18:14,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:14,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 08:18:14,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:14,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:18:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:14,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:14,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 08:18:14,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:14,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 08:18:14,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:14,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 08:18:14,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 08:18:14,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942020780] [2020-10-13 08:18:14,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:14,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:18:14,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723122651] [2020-10-13 08:18:14,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:18:14,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:14,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:18:14,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:18:14,986 INFO L87 Difference]: Start difference. First operand 18626 states and 23276 transitions. Second operand 5 states. [2020-10-13 08:18:27,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:27,562 INFO L93 Difference]: Finished difference Result 41911 states and 53967 transitions. [2020-10-13 08:18:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:18:27,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2020-10-13 08:18:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:27,660 INFO L225 Difference]: With dead ends: 41911 [2020-10-13 08:18:27,661 INFO L226 Difference]: Without dead ends: 23291 [2020-10-13 08:18:27,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:27,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23291 states. [2020-10-13 08:18:28,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23291 to 23279. [2020-10-13 08:18:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23279 states. [2020-10-13 08:18:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23279 states to 23279 states and 28664 transitions. [2020-10-13 08:18:28,344 INFO L78 Accepts]: Start accepts. Automaton has 23279 states and 28664 transitions. Word has length 281 [2020-10-13 08:18:28,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:28,345 INFO L479 AbstractCegarLoop]: Abstraction has 23279 states and 28664 transitions. [2020-10-13 08:18:28,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:18:28,346 INFO L276 IsEmpty]: Start isEmpty. Operand 23279 states and 28664 transitions. [2020-10-13 08:18:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-13 08:18:28,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:28,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:28,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:18:28,375 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:28,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:28,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1679315255, now seen corresponding path program 1 times [2020-10-13 08:18:28,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:28,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945860671] [2020-10-13 08:18:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:28,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:28,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:29,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:33,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:33,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-13 08:18:33,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-13 08:18:33,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:33,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:33,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-13 08:18:33,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:18:33,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:33,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:33,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:33,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:33,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:18:33,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:33,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:34,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:34,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 08:18:34,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-13 08:18:34,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:34,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:34,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-13 08:18:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:34,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:18:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:34,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:34,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 08:18:34,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 08:18:34,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 08:18:34,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:18:34,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945860671] [2020-10-13 08:18:34,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:34,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:18:34,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290756602] [2020-10-13 08:18:34,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:18:34,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:34,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:18:34,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:18:34,738 INFO L87 Difference]: Start difference. First operand 23279 states and 28664 transitions. Second operand 6 states. [2020-10-13 08:18:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:51,305 INFO L93 Difference]: Finished difference Result 61275 states and 79159 transitions. [2020-10-13 08:18:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:18:51,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 382 [2020-10-13 08:18:51,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:51,473 INFO L225 Difference]: With dead ends: 61275 [2020-10-13 08:18:51,473 INFO L226 Difference]: Without dead ends: 38002 [2020-10-13 08:18:51,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 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 08:18:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38002 states. [2020-10-13 08:18:52,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38002 to 37990. [2020-10-13 08:18:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37990 states. [2020-10-13 08:18:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37990 states to 37990 states and 47654 transitions. [2020-10-13 08:18:52,498 INFO L78 Accepts]: Start accepts. Automaton has 37990 states and 47654 transitions. Word has length 382 [2020-10-13 08:18:52,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:52,499 INFO L479 AbstractCegarLoop]: Abstraction has 37990 states and 47654 transitions. [2020-10-13 08:18:52,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:18:52,499 INFO L276 IsEmpty]: Start isEmpty. Operand 37990 states and 47654 transitions. [2020-10-13 08:18:52,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2020-10-13 08:18:52,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:52,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:18:52,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:18:52,628 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:52,629 INFO L82 PathProgramCache]: Analyzing trace with hash -909758282, now seen corresponding path program 1 times [2020-10-13 08:18:52,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:52,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576927901] [2020-10-13 08:18:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:53,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:54,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:57,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:57,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 782 [2020-10-13 08:18:57,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:57,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 08:18:57,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:57,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:18:57,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:18:57,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 08:18:57,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:57,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:57,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:57,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:57,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:57,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:18:57,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:57,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:18:57,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:58,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:58,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:58,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:18:58,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:58,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-13 08:18:58,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:18:58,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 08:18:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:58,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:18:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:58,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:59,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:59,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-13 08:18:59,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:59,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-13 08:18:59,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-13 08:18:59,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:59,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:59,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:18:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:59,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:59,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 08:18:59,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:59,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 08:18:59,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:59,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:59,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:59,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:18:59,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:18:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:59,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:59,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:59,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 08:18:59,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:59,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:18:59,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:59,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 114 proven. 121 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:19:01,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576927901] [2020-10-13 08:19:01,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:01,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:19:01,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597950030] [2020-10-13 08:19:01,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:19:01,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:19:01,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:19:01,234 INFO L87 Difference]: Start difference. First operand 37990 states and 47654 transitions. Second operand 7 states. [2020-10-13 08:19:17,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:17,614 INFO L93 Difference]: Finished difference Result 85443 states and 114499 transitions. [2020-10-13 08:19:17,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:19:17,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 766 [2020-10-13 08:19:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:17,876 INFO L225 Difference]: With dead ends: 85443 [2020-10-13 08:19:17,876 INFO L226 Difference]: Without dead ends: 48226 [2020-10-13 08:19:17,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:19:18,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48226 states. [2020-10-13 08:19:19,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48226 to 46995. [2020-10-13 08:19:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46995 states. [2020-10-13 08:19:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46995 states to 46995 states and 59279 transitions. [2020-10-13 08:19:19,260 INFO L78 Accepts]: Start accepts. Automaton has 46995 states and 59279 transitions. Word has length 766 [2020-10-13 08:19:19,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:19,261 INFO L479 AbstractCegarLoop]: Abstraction has 46995 states and 59279 transitions. [2020-10-13 08:19:19,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:19:19,261 INFO L276 IsEmpty]: Start isEmpty. Operand 46995 states and 59279 transitions. [2020-10-13 08:19:19,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2020-10-13 08:19:19,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:19,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:19:19,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:19:19,425 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:19,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:19,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1663401390, now seen corresponding path program 1 times [2020-10-13 08:19:19,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:19,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129554334] [2020-10-13 08:19:19,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:19,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:24,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:24,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-13 08:19:24,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:19:24,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 08:19:24,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:24,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:19:24,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:19:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 08:19:24,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:24,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:24,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:24,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:24,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:19:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:19:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:24,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:24,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:25,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:25,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 08:19:25,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:25,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-13 08:19:25,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:19:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 08:19:25,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:25,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 08:19:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:27,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:27,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-13 08:19:27,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:27,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1719 [2020-10-13 08:19:27,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-13 08:19:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:27,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:19:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:27,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:27,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:27,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 08:19:27,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:27,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:19:27,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:27,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:27,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:27,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:27,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:19:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:27,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:27,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:27,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 08:19:27,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:19:27,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:27,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:19:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 114 proven. 157 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:19:28,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129554334] [2020-10-13 08:19:28,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:28,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:19:28,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337996535] [2020-10-13 08:19:28,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:19:28,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:28,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:19:28,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:19:28,124 INFO L87 Difference]: Start difference. First operand 46995 states and 59279 transitions. Second operand 7 states. [2020-10-13 08:19:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:41,309 INFO L93 Difference]: Finished difference Result 85149 states and 110219 transitions. [2020-10-13 08:19:41,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:19:41,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 802 [2020-10-13 08:19:41,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:41,394 INFO L225 Difference]: With dead ends: 85149 [2020-10-13 08:19:41,394 INFO L226 Difference]: Without dead ends: 38927 [2020-10-13 08:19:41,444 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 08:19:41,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38927 states. [2020-10-13 08:19:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38927 to 38776. [2020-10-13 08:19:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38776 states. [2020-10-13 08:19:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38776 states to 38776 states and 48559 transitions. [2020-10-13 08:19:42,103 INFO L78 Accepts]: Start accepts. Automaton has 38776 states and 48559 transitions. Word has length 802 [2020-10-13 08:19:42,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:42,104 INFO L479 AbstractCegarLoop]: Abstraction has 38776 states and 48559 transitions. [2020-10-13 08:19:42,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:19:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 38776 states and 48559 transitions. [2020-10-13 08:19:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2020-10-13 08:19:42,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:42,183 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:19:42,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:19:42,183 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:42,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:42,184 INFO L82 PathProgramCache]: Analyzing trace with hash -6640021, now seen corresponding path program 1 times [2020-10-13 08:19:42,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:42,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262107161] [2020-10-13 08:19:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:42,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:45,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:47,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:47,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:47,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 862 [2020-10-13 08:19:47,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:19:47,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-13 08:19:47,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 792 [2020-10-13 08:19:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:19:47,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:47,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:47,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:47,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:47,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:47,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:19:47,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:47,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:47,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:47,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:47,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:47,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:47,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:47,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:19:47,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 08:19:47,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:47,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 08:19:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:47,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:47,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:19:47,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:47,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:19:47,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:47,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:47,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:47,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:47,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:47,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-13 08:19:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:47,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:48,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:48,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-13 08:19:48,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:48,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-13 08:19:48,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:48,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:48,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:48,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 569 [2020-10-13 08:19:48,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:48,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:19:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:48,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:48,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:48,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 08:19:48,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:48,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-13 08:19:48,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:48,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:48,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:48,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 284 [2020-10-13 08:19:48,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:19:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:48,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:48,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:48,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 08:19:48,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:19:48,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:48,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:19:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 174 proven. 3 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-13 08:19:49,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262107161] [2020-10-13 08:19:49,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:49,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:19:49,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356155332] [2020-10-13 08:19:49,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:19:49,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:49,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:19:49,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:19:49,289 INFO L87 Difference]: Start difference. First operand 38776 states and 48559 transitions. Second operand 5 states. [2020-10-13 08:20:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:20:02,911 INFO L93 Difference]: Finished difference Result 107077 states and 138524 transitions. [2020-10-13 08:20:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:20:02,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 844 [2020-10-13 08:20:02,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:20:03,078 INFO L225 Difference]: With dead ends: 107077 [2020-10-13 08:20:03,078 INFO L226 Difference]: Without dead ends: 69848 [2020-10-13 08:20:03,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 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 08:20:03,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69848 states. [2020-10-13 08:20:04,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69848 to 69839. [2020-10-13 08:20:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69839 states. [2020-10-13 08:20:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69839 states to 69839 states and 88160 transitions. [2020-10-13 08:20:04,234 INFO L78 Accepts]: Start accepts. Automaton has 69839 states and 88160 transitions. Word has length 844 [2020-10-13 08:20:04,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:20:04,236 INFO L479 AbstractCegarLoop]: Abstraction has 69839 states and 88160 transitions. [2020-10-13 08:20:04,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:20:04,236 INFO L276 IsEmpty]: Start isEmpty. Operand 69839 states and 88160 transitions. [2020-10-13 08:20:04,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2020-10-13 08:20:04,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:20:04,369 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:04,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:20:04,369 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:20:04,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:20:04,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1238391446, now seen corresponding path program 1 times [2020-10-13 08:20:04,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:20:04,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425680309] [2020-10-13 08:20:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:20:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:04,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:04,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:05,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:09,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:09,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1149 [2020-10-13 08:20:09,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:20:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5179 [2020-10-13 08:20:09,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:20:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:20:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:20:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:09,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:20:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:09,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:09,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:09,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:20:09,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:09,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:20:09,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:20:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:20:09,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:09,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:20:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:09,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:09,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:09,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:20:09,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:09,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:20:09,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:20:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:20:09,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 08:20:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:09,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 08:20:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:09,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:09,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 08:20:09,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:09,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:20:09,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:09,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-13 08:20:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:09,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:10,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-13 08:20:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:10,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:10,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:10,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 08:20:10,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:10,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:20:10,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 08:20:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:10,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:10,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2020-10-13 08:20:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:10,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:10,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:20:10,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:10,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-13 08:20:10,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:10,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:10,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:20:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:10,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:10,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:20:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:10,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:11,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:11,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:20:11,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:11,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 08:20:11,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:11,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:20:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:20:11,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:20:11,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:20:11,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:20:11,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:20:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:20:11,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:20:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:20:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:20:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:20:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:20:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 228 proven. 240 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2020-10-13 08:20:13,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425680309] [2020-10-13 08:20:13,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:20:13,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:20:13,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917944111] [2020-10-13 08:20:13,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:20:13,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:20:13,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:20:13,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:20:13,191 INFO L87 Difference]: Start difference. First operand 69839 states and 88160 transitions. Second operand 7 states.