/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:35:52,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:35:52,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:35:52,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:35:52,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:35:52,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:35:52,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:35:52,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:35:52,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:35:52,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:35:52,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:35:52,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:35:52,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:35:52,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:35:52,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:35:52,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:35:52,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:35:52,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:35:52,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:35:52,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:35:52,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:35:52,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:35:52,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:35:52,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:35:52,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:35:52,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:35:52,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:35:52,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:35:52,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:35:52,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:35:52,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:35:52,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:35:52,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:35:52,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:35:52,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:35:52,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:35:52,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:35:52,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:35:52,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:35:52,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:35:52,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:35:52,987 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 08:35:53,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:35:53,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:35:53,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:35:53,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:35:53,037 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:35:53,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:35:53,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:35:53,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:35:53,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:35:53,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:35:53,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:35:53,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:35:53,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:35:53,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:35:53,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:35:53,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:35:53,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:35:53,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:35:53,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:35:53,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:35:53,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:35:53,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:35:53,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:35:53,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:35:53,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:35:53,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:35:53,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:35:53,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:35:53,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:35:53,044 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 08:35:53,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:35:53,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:35:53,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:35:53,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:35:53,381 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:35:53,382 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2020-10-13 08:35:53,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06b1ab627/2bc76affcafe48ba9dbba958a1a74390/FLAGd29f9a7b5 [2020-10-13 08:35:54,335 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:35:54,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2020-10-13 08:35:54,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06b1ab627/2bc76affcafe48ba9dbba958a1a74390/FLAGd29f9a7b5 [2020-10-13 08:35:54,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06b1ab627/2bc76affcafe48ba9dbba958a1a74390 [2020-10-13 08:35:54,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:35:54,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:35:54,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:35:54,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:35:54,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:35:54,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:35:54" (1/1) ... [2020-10-13 08:35:54,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aed4350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:54, skipping insertion in model container [2020-10-13 08:35:54,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:35:54" (1/1) ... [2020-10-13 08:35:54,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:35:55,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:35:56,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:35:56,986 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:35:57,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:35:57,755 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:35:57,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:57 WrapperNode [2020-10-13 08:35:57,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:35:57,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:35:57,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:35:57,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:35:57,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:57" (1/1) ... [2020-10-13 08:35:57,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:57" (1/1) ... [2020-10-13 08:35:57,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:57" (1/1) ... [2020-10-13 08:35:57,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:57" (1/1) ... [2020-10-13 08:35:58,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:57" (1/1) ... [2020-10-13 08:35:58,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:57" (1/1) ... [2020-10-13 08:35:58,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:57" (1/1) ... [2020-10-13 08:35:58,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:35:58,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:35:58,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:35:58,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:35:58,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:57" (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 08:35:58,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:35:58,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:35:58,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:35:58,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:35:58,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:35:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:35:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:35:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:35:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:35:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:35:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:35:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:35:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:35:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:35:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:35:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:35:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:36:10,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:36:10,360 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:36:10,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:36:10 BoogieIcfgContainer [2020-10-13 08:36:10,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:36:10,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:36:10,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:36:10,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:36:10,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:35:54" (1/3) ... [2020-10-13 08:36:10,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5cf2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:36:10, skipping insertion in model container [2020-10-13 08:36:10,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:35:57" (2/3) ... [2020-10-13 08:36:10,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5cf2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:36:10, skipping insertion in model container [2020-10-13 08:36:10,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:36:10" (3/3) ... [2020-10-13 08:36:10,386 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label27.c [2020-10-13 08:36:10,397 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:36:10,408 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:36:10,423 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:36:10,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:36:10,457 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:36:10,457 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:36:10,457 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:36:10,458 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:36:10,458 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:36:10,458 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:36:10,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:36:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:36:10,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 08:36:10,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:10,511 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] [2020-10-13 08:36:10,512 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:10,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:10,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1839105400, now seen corresponding path program 1 times [2020-10-13 08:36:10,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:10,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908552591] [2020-10-13 08:36:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:11,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:11,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 08:36:11,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-13 08:36:11,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:36:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:36:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 08:36:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:36:11,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:11,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:11,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:11,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:11,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:36:11,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:11,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:36:11,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:11,460 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 08:36:11,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908552591] [2020-10-13 08:36:11,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:36:11,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:36:11,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141673075] [2020-10-13 08:36:11,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:36:11,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:11,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:36:11,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:36:11,492 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:36:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:26,285 INFO L93 Difference]: Finished difference Result 3243 states and 5948 transitions. [2020-10-13 08:36:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:26,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-13 08:36:26,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:26,321 INFO L225 Difference]: With dead ends: 3243 [2020-10-13 08:36:26,321 INFO L226 Difference]: Without dead ends: 2045 [2020-10-13 08:36:26,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:36:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-10-13 08:36:26,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1988. [2020-10-13 08:36:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-13 08:36:26,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3533 transitions. [2020-10-13 08:36:26,515 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3533 transitions. Word has length 51 [2020-10-13 08:36:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:26,516 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 3533 transitions. [2020-10-13 08:36:26,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:36:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3533 transitions. [2020-10-13 08:36:26,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 08:36:26,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:26,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:36:26,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:36:26,524 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:26,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:26,525 INFO L82 PathProgramCache]: Analyzing trace with hash -25289727, now seen corresponding path program 1 times [2020-10-13 08:36:26,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:26,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812490738] [2020-10-13 08:36:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:28,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:28,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:36:28,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:36:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1795 [2020-10-13 08:36:28,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:36:28,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:36:28,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:36:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:28,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:28,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:28,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:28,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:36:28,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:28,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:28,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:28,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:28,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:28,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:28,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:28,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:36:28,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:28,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:36:28,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:36:28,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:28,714 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:36:28,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812490738] [2020-10-13 08:36:28,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:28,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:36:28,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583634010] [2020-10-13 08:36:28,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:36:28,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:28,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:36:28,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:36:28,718 INFO L87 Difference]: Start difference. First operand 1988 states and 3533 transitions. Second operand 6 states. [2020-10-13 08:36:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:43,499 INFO L93 Difference]: Finished difference Result 3991 states and 7089 transitions. [2020-10-13 08:36:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:43,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-13 08:36:43,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:43,526 INFO L225 Difference]: With dead ends: 3991 [2020-10-13 08:36:43,526 INFO L226 Difference]: Without dead ends: 1992 [2020-10-13 08:36:43,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:36:43,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2020-10-13 08:36:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1988. [2020-10-13 08:36:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-13 08:36:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3531 transitions. [2020-10-13 08:36:43,620 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3531 transitions. Word has length 120 [2020-10-13 08:36:43,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:43,624 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 3531 transitions. [2020-10-13 08:36:43,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:36:43,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3531 transitions. [2020-10-13 08:36:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 08:36:43,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:43,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:36:43,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:36:43,636 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:43,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:43,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1791628884, now seen corresponding path program 1 times [2020-10-13 08:36:43,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:43,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639712565] [2020-10-13 08:36:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:43,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:44,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:44,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 08:36:44,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:36:44,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-13 08:36:44,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:44,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:44,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:36:44,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 08:36:44,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:44,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:44,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:44,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:44,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:44,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:44,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:36:44,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:44,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:36:44,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:44,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:44,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:44,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:36:44,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 08:36:44,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:36:44,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:36:44,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639712565] [2020-10-13 08:36:44,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:44,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:36:44,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057565750] [2020-10-13 08:36:44,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:36:44,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:44,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:36:44,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:36:44,773 INFO L87 Difference]: Start difference. First operand 1988 states and 3531 transitions. Second operand 5 states. [2020-10-13 08:37:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:04,023 INFO L93 Difference]: Finished difference Result 5656 states and 10225 transitions. [2020-10-13 08:37:04,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:37:04,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 08:37:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:04,057 INFO L225 Difference]: With dead ends: 5656 [2020-10-13 08:37:04,057 INFO L226 Difference]: Without dead ends: 3674 [2020-10-13 08:37:04,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:37:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2020-10-13 08:37:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3649. [2020-10-13 08:37:04,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3649 states. [2020-10-13 08:37:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 5563 transitions. [2020-10-13 08:37:04,172 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 5563 transitions. Word has length 123 [2020-10-13 08:37:04,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:04,172 INFO L479 AbstractCegarLoop]: Abstraction has 3649 states and 5563 transitions. [2020-10-13 08:37:04,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:37:04,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 5563 transitions. [2020-10-13 08:37:04,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 08:37:04,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:04,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:37:04,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:37:04,176 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:04,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1800453315, now seen corresponding path program 1 times [2020-10-13 08:37:04,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:04,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438711593] [2020-10-13 08:37:04,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:04,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:05,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:05,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 08:37:05,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:37:05,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-10-13 08:37:05,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:37:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 08:37:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:05,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:05,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:05,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:05,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:05,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:05,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:37:05,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:05,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:05,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:05,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:05,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:37:05,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:37:05,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:37:05,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:37:05,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438711593] [2020-10-13 08:37:05,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:05,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:37:05,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659407095] [2020-10-13 08:37:05,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:37:05,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:05,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:37:05,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:37:05,607 INFO L87 Difference]: Start difference. First operand 3649 states and 5563 transitions. Second operand 5 states. [2020-10-13 08:37:24,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:24,168 INFO L93 Difference]: Finished difference Result 10567 states and 16378 transitions. [2020-10-13 08:37:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:37:24,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 08:37:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:24,208 INFO L225 Difference]: With dead ends: 10567 [2020-10-13 08:37:24,209 INFO L226 Difference]: Without dead ends: 6924 [2020-10-13 08:37:24,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:37:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6924 states. [2020-10-13 08:37:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6924 to 6917. [2020-10-13 08:37:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6917 states. [2020-10-13 08:37:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6917 states to 6917 states and 9832 transitions. [2020-10-13 08:37:24,387 INFO L78 Accepts]: Start accepts. Automaton has 6917 states and 9832 transitions. Word has length 127 [2020-10-13 08:37:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:24,387 INFO L479 AbstractCegarLoop]: Abstraction has 6917 states and 9832 transitions. [2020-10-13 08:37:24,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:37:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 6917 states and 9832 transitions. [2020-10-13 08:37:24,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 08:37:24,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:24,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:37:24,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:37:24,391 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:24,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:24,392 INFO L82 PathProgramCache]: Analyzing trace with hash -48971783, now seen corresponding path program 1 times [2020-10-13 08:37:24,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:24,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265146968] [2020-10-13 08:37:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:24,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:25,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:25,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 08:37:25,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:37:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-10-13 08:37:25,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 08:37:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 08:37:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:25,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:25,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:25,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:25,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:25,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:25,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:37:25,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:25,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:25,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:25,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:25,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:25,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:25,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:25,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 08:37:25,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:25,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:37:25,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:37:25,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265146968] [2020-10-13 08:37:25,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:25,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:37:25,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685600618] [2020-10-13 08:37:25,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:37:25,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:25,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:37:25,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:37:25,564 INFO L87 Difference]: Start difference. First operand 6917 states and 9832 transitions. Second operand 5 states. [2020-10-13 08:37:46,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:37:46,856 INFO L93 Difference]: Finished difference Result 17099 states and 25417 transitions. [2020-10-13 08:37:46,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:37:46,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-13 08:37:46,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:37:46,894 INFO L225 Difference]: With dead ends: 17099 [2020-10-13 08:37:46,895 INFO L226 Difference]: Without dead ends: 10188 [2020-10-13 08:37:46,911 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 08:37:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10188 states. [2020-10-13 08:37:47,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10188 to 10179. [2020-10-13 08:37:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10179 states. [2020-10-13 08:37:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10179 states to 10179 states and 13867 transitions. [2020-10-13 08:37:47,131 INFO L78 Accepts]: Start accepts. Automaton has 10179 states and 13867 transitions. Word has length 147 [2020-10-13 08:37:47,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:37:47,132 INFO L479 AbstractCegarLoop]: Abstraction has 10179 states and 13867 transitions. [2020-10-13 08:37:47,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:37:47,132 INFO L276 IsEmpty]: Start isEmpty. Operand 10179 states and 13867 transitions. [2020-10-13 08:37:47,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 08:37:47,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:37:47,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:37:47,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:37:47,137 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:37:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:37:47,140 INFO L82 PathProgramCache]: Analyzing trace with hash -466716875, now seen corresponding path program 1 times [2020-10-13 08:37:47,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:37:47,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303982366] [2020-10-13 08:37:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:37:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:47,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:47,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:48,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:48,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:37:48,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:37:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-13 08:37:48,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:37:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 08:37:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 08:37:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:48,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:37:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:48,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:49,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:49,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:37:49,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:49,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:37:49,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:37:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:37:49,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:37:49,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:37:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:37:49,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:37:49,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:37:49,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 08:37:49,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:37:49,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-13 08:37:49,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:37:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:37:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:37:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 08:37:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:37:49,340 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:37:49,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303982366] [2020-10-13 08:37:49,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:37:49,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:37:49,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009994413] [2020-10-13 08:37:49,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:37:49,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:37:49,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:37:49,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:37:49,344 INFO L87 Difference]: Start difference. First operand 10179 states and 13867 transitions. Second operand 5 states. [2020-10-13 08:38:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:04,577 INFO L93 Difference]: Finished difference Result 23627 states and 33672 transitions. [2020-10-13 08:38:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:38:04,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-13 08:38:04,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:04,627 INFO L225 Difference]: With dead ends: 23627 [2020-10-13 08:38:04,627 INFO L226 Difference]: Without dead ends: 13454 [2020-10-13 08:38:04,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:38:04,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13454 states. [2020-10-13 08:38:04,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13454 to 13440. [2020-10-13 08:38:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13440 states. [2020-10-13 08:38:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13440 states to 13440 states and 18423 transitions. [2020-10-13 08:38:04,919 INFO L78 Accepts]: Start accepts. Automaton has 13440 states and 18423 transitions. Word has length 171 [2020-10-13 08:38:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:04,920 INFO L479 AbstractCegarLoop]: Abstraction has 13440 states and 18423 transitions. [2020-10-13 08:38:04,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:38:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 13440 states and 18423 transitions. [2020-10-13 08:38:04,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-13 08:38:04,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:04,927 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:38:04,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:38:04,928 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash -870728089, now seen corresponding path program 1 times [2020-10-13 08:38:04,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:04,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840956906] [2020-10-13 08:38:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:04,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:06,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:09,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:09,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-13 08:38:09,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:38:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4752 [2020-10-13 08:38:09,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-13 08:38:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 08:38:09,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:09,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:09,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:09,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:09,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:09,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:38:09,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:09,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:09,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:09,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:09,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:09,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 08:38:09,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:09,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:38:09,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:09,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:09,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:09,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:09,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 08:38:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:09,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:09,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:38:09,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:09,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:38:09,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 08:38:09,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-13 08:38:10,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840956906] [2020-10-13 08:38:10,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:10,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:38:10,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265118674] [2020-10-13 08:38:10,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:38:10,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:10,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:38:10,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:38:10,051 INFO L87 Difference]: Start difference. First operand 13440 states and 18423 transitions. Second operand 5 states. [2020-10-13 08:38:29,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:38:29,038 INFO L93 Difference]: Finished difference Result 39884 states and 56810 transitions. [2020-10-13 08:38:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:38:29,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-13 08:38:29,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:38:29,131 INFO L225 Difference]: With dead ends: 39884 [2020-10-13 08:38:29,131 INFO L226 Difference]: Without dead ends: 26450 [2020-10-13 08:38:29,163 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 08:38:29,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26450 states. [2020-10-13 08:38:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26450 to 26445. [2020-10-13 08:38:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26445 states. [2020-10-13 08:38:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26445 states to 26445 states and 35652 transitions. [2020-10-13 08:38:29,770 INFO L78 Accepts]: Start accepts. Automaton has 26445 states and 35652 transitions. Word has length 229 [2020-10-13 08:38:29,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:38:29,771 INFO L479 AbstractCegarLoop]: Abstraction has 26445 states and 35652 transitions. [2020-10-13 08:38:29,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:38:29,771 INFO L276 IsEmpty]: Start isEmpty. Operand 26445 states and 35652 transitions. [2020-10-13 08:38:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-13 08:38:29,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:38:29,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:38:29,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:38:29,786 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:38:29,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:38:29,787 INFO L82 PathProgramCache]: Analyzing trace with hash -135716240, now seen corresponding path program 1 times [2020-10-13 08:38:29,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:38:29,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111029005] [2020-10-13 08:38:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:38:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:30,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:30,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:31,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:31,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-13 08:38:31,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:38:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1791 [2020-10-13 08:38:31,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:38:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-13 08:38:31,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 08:38:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:31,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:38:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:31,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:31,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:31,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:38:31,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:31,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:38:31,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:38:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:38:31,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:38:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:38:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:38:31,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:38:32,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:38:32,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 08:38:32,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:38:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-13 08:38:32,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:38:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:38:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:38:32,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-13 08:38:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:38:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:38:32,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111029005] [2020-10-13 08:38:32,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:38:32,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:38:32,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692111492] [2020-10-13 08:38:32,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:38:32,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:38:32,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:38:32,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:38:32,277 INFO L87 Difference]: Start difference. First operand 26445 states and 35652 transitions. Second operand 6 states. [2020-10-13 08:39:02,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:39:02,181 INFO L93 Difference]: Finished difference Result 59409 states and 83383 transitions. [2020-10-13 08:39:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:39:02,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2020-10-13 08:39:02,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:39:02,303 INFO L225 Difference]: With dead ends: 59409 [2020-10-13 08:39:02,303 INFO L226 Difference]: Without dead ends: 32970 [2020-10-13 08:39:02,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:39:02,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32970 states. [2020-10-13 08:39:02,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32970 to 32941. [2020-10-13 08:39:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32941 states. [2020-10-13 08:39:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32941 states to 32941 states and 44958 transitions. [2020-10-13 08:39:03,013 INFO L78 Accepts]: Start accepts. Automaton has 32941 states and 44958 transitions. Word has length 254 [2020-10-13 08:39:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:39:03,014 INFO L479 AbstractCegarLoop]: Abstraction has 32941 states and 44958 transitions. [2020-10-13 08:39:03,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:39:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 32941 states and 44958 transitions. [2020-10-13 08:39:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-13 08:39:03,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:39:03,032 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:39:03,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:39:03,033 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:39:03,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:39:03,033 INFO L82 PathProgramCache]: Analyzing trace with hash -349540645, now seen corresponding path program 1 times [2020-10-13 08:39:03,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:39:03,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734476264] [2020-10-13 08:39:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:39:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:03,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:07,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:07,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-13 08:39:07,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:39:07,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4111 [2020-10-13 08:39:07,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:07,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:39:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 235 [2020-10-13 08:39:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 08:39:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:07,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:39:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:07,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:07,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:07,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:39:07,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:07,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:39:07,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:07,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:39:07,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:07,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:39:07,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:07,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:39:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:07,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:07,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:07,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:39:07,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:07,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:39:07,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:07,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:39:07,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:07,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:39:07,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:07,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:39:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:39:07,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:39:07,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:39:07,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:39:07,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:39:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 08:39:07,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:39:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:39:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:39:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:39:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:39:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 08:39:07,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734476264] [2020-10-13 08:39:07,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:39:07,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:39:07,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458326318] [2020-10-13 08:39:07,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:39:07,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:39:07,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:39:07,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:39:07,698 INFO L87 Difference]: Start difference. First operand 32941 states and 44958 transitions. Second operand 5 states. [2020-10-13 08:39:43,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:39:43,305 INFO L93 Difference]: Finished difference Result 86982 states and 121062 transitions. [2020-10-13 08:39:43,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:39:43,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 274 [2020-10-13 08:39:43,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:39:43,492 INFO L225 Difference]: With dead ends: 86982 [2020-10-13 08:39:43,492 INFO L226 Difference]: Without dead ends: 54047 [2020-10-13 08:39:43,549 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 08:39:43,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54047 states.