/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:56:25,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:56:25,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:56:26,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:56:26,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:56:26,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:56:26,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:56:26,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:56:26,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:56:26,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:56:26,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:56:26,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:56:26,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:56:26,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:56:26,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:56:26,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:56:26,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:56:26,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:56:26,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:56:26,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:56:26,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:56:26,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:56:26,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:56:26,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:56:26,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:56:26,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:56:26,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:56:26,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:56:26,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:56:26,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:56:26,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:56:26,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:56:26,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:56:26,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:56:26,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:56:26,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:56:26,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:56:26,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:56:26,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:56:26,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:56:26,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:56:26,072 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 [2020-09-25 01:56:26,115 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:56:26,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:56:26,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:56:26,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:56:26,117 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:56:26,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:56:26,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:56:26,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:56:26,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:56:26,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:56:26,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:56:26,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:56:26,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:56:26,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:56:26,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:56:26,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:56:26,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:56:26,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:56:26,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:56:26,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:56:26,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:56:26,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:56:26,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:56:26,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:56:26,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:56:26,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:56:26,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:56:26,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:56:26,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:56:26,123 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 -> SingleStatement 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; 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; 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; 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; 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; [2020-09-25 01:56:26,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:56:26,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:56:26,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:56:26,625 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:56:26,626 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:56:26,627 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product28.cil.c [2020-09-25 01:56:26,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dad9759f1/6e3eb95b62024b3e95801bd1317f8ce7/FLAG7d2d1d3d0 [2020-09-25 01:56:27,258 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:56:27,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product28.cil.c [2020-09-25 01:56:27,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dad9759f1/6e3eb95b62024b3e95801bd1317f8ce7/FLAG7d2d1d3d0 [2020-09-25 01:56:27,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dad9759f1/6e3eb95b62024b3e95801bd1317f8ce7 [2020-09-25 01:56:27,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:56:27,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:56:27,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:56:27,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:56:27,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:56:27,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:56:27" (1/1) ... [2020-09-25 01:56:27,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6317371b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:27, skipping insertion in model container [2020-09-25 01:56:27,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:56:27" (1/1) ... [2020-09-25 01:56:27,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:56:27,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:56:27,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:56:28,066 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:56:28,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:56:28,222 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:56:28,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:28 WrapperNode [2020-09-25 01:56:28,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:56:28,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:56:28,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:56:28,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:56:28,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:28" (1/1) ... [2020-09-25 01:56:28,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:28" (1/1) ... [2020-09-25 01:56:28,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:28" (1/1) ... [2020-09-25 01:56:28,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:28" (1/1) ... [2020-09-25 01:56:28,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:28" (1/1) ... [2020-09-25 01:56:28,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:28" (1/1) ... [2020-09-25 01:56:28,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:28" (1/1) ... [2020-09-25 01:56:28,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:56:28,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:56:28,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:56:28,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:56:28,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:28" (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 [2020-09-25 01:56:28,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:56:28,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:56:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:56:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:56:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:56:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:56:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:56:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:56:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:56:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 01:56:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-09-25 01:56:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-09-25 01:56:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-09-25 01:56:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:56:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:56:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:56:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:56:28,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:56:28,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:56:28,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:56:28,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:56:28,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:56:28,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:56:28,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:56:28,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:56:28,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:56:28,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:56:28,411 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:56:28,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:56:28,412 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:56:28,412 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:56:28,412 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:56:28,412 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 01:56:28,412 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:56:28,412 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:56:28,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:56:28,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:56:28,413 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:56:28,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 01:56:28,413 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 01:56:28,415 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:56:28,415 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:56:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:56:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:56:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:56:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:56:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:56:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:56:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:56:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:56:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:56:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 01:56:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:56:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:56:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:56:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-09-25 01:56:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-09-25 01:56:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-09-25 01:56:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:56:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:56:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:56:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:56:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:56:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:56:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:56:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:56:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:56:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:56:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:56:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:56:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:56:28,423 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:56:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:56:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:56:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:56:28,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:56:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:56:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:56:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:56:28,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:56:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:56:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:56:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:56:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:56:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:56:28,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:56:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:56:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:56:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 01:56:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:56:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:56:28,427 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:56:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 01:56:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 01:56:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:56:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:56:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:56:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:56:29,537 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:56:29,537 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:56:29,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:56:29 BoogieIcfgContainer [2020-09-25 01:56:29,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:56:29,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:56:29,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:56:29,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:56:29,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:56:27" (1/3) ... [2020-09-25 01:56:29,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a256ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:56:29, skipping insertion in model container [2020-09-25 01:56:29,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:56:28" (2/3) ... [2020-09-25 01:56:29,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a256ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:56:29, skipping insertion in model container [2020-09-25 01:56:29,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:56:29" (3/3) ... [2020-09-25 01:56:29,554 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product28.cil.c [2020-09-25 01:56:29,566 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:56:29,577 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:56:29,600 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:56:29,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:56:29,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:56:29,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:56:29,638 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:56:29,638 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:56:29,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:56:29,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:56:29,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:56:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-25 01:56:29,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 01:56:29,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:56:29,724 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 01:56:29,724 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:56:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:56:29,737 INFO L82 PathProgramCache]: Analyzing trace with hash 758256714, now seen corresponding path program 1 times [2020-09-25 01:56:29,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:56:29,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709836354] [2020-09-25 01:56:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:56:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:30,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:32,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:32,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:34,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:35,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:35,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 01:56:35,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:56:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 01:56:35,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:35,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-09-25 01:56:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:35,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-25 01:56:35,677 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:56:35,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:35,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:35,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:56:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 01:56:35,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:35,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:56:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:35,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:35,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:35,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:35,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:35,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:56:35,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:35,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:35,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:35,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:35,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:35,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:56:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:35,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:35,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:35,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:35,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:35,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 01:56:35,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:35,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:35,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:56:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:35,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:35,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:35,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:56:35,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:35,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:56:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:35,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:35,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:35,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:35,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:56:35,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:35,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:35,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:35,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:35,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:56:35,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:56:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:35,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:35,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:35,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:56:35,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:35,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:35,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:56:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:35,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:35,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:56:35,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:35,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:56:35,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:56:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:35,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:36,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:36,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:36,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:36,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:36,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:36,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:36,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:36,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:36,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-25 01:56:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:36,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:36,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:36,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:36,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:36,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:36,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:36,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 01:56:36,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-25 01:56:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:36,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:36,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:36,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:36,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:36,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:56:36,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709836354] [2020-09-25 01:56:36,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:56:36,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:56:36,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256192530] [2020-09-25 01:56:36,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:56:36,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:56:36,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:56:36,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:56:36,102 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 4 states. [2020-09-25 01:56:37,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:56:37,564 INFO L93 Difference]: Finished difference Result 456 states and 539 transitions. [2020-09-25 01:56:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 01:56:37,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 01:56:37,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:56:37,597 INFO L225 Difference]: With dead ends: 456 [2020-09-25 01:56:37,597 INFO L226 Difference]: Without dead ends: 294 [2020-09-25 01:56:37,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:56:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-09-25 01:56:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 247. [2020-09-25 01:56:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-09-25 01:56:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 268 transitions. [2020-09-25 01:56:37,739 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 268 transitions. Word has length 160 [2020-09-25 01:56:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:56:37,740 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 268 transitions. [2020-09-25 01:56:37,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:56:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 268 transitions. [2020-09-25 01:56:37,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 01:56:37,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:56:37,745 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 01:56:37,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:56:37,746 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:56:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:56:37,746 INFO L82 PathProgramCache]: Analyzing trace with hash -550615221, now seen corresponding path program 1 times [2020-09-25 01:56:37,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:56:37,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411365130] [2020-09-25 01:56:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:56:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:37,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:39,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:40,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:41,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:42,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:42,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 01:56:42,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:56:42,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-09-25 01:56:42,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:56:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-25 01:56:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:56:42,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:43,212 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:56:43,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:43,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:43,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:56:43,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:43,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 01:56:43,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:43,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:56:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:43,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:43,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:43,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:43,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:43,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:56:43,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:43,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:56:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:43,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:43,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:43,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:43,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:43,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:43,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:43,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:43,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:43,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:43,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:43,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:56:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:43,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:43,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:43,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:43,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:43,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:56:43,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:43,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:56:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:43,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:43,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:43,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:43,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:43,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:43,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:56:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:43,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:43,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:43,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:56:43,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:43,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:43,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:43,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:43,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:43,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:43,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:56:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:43,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:43,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:56:43,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:43,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:56:43,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 01:56:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:43,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:43,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:43,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:43,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:43,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:43,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:43,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:43,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-25 01:56:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:43,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:43,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:43,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:43,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:43,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:43,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:43,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:43,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:43,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 01:56:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:43,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:43,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:43,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:43,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:43,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:56:43,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411365130] [2020-09-25 01:56:43,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:56:43,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:56:43,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381830355] [2020-09-25 01:56:43,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:56:43,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:56:43,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:56:43,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:56:43,485 INFO L87 Difference]: Start difference. First operand 247 states and 268 transitions. Second operand 5 states. [2020-09-25 01:56:44,178 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:56:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:56:44,966 INFO L93 Difference]: Finished difference Result 375 states and 423 transitions. [2020-09-25 01:56:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:56:44,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 01:56:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:56:44,971 INFO L225 Difference]: With dead ends: 375 [2020-09-25 01:56:44,972 INFO L226 Difference]: Without dead ends: 283 [2020-09-25 01:56:44,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:56:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-09-25 01:56:45,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 237. [2020-09-25 01:56:45,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-09-25 01:56:45,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 255 transitions. [2020-09-25 01:56:45,044 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 255 transitions. Word has length 161 [2020-09-25 01:56:45,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:56:45,047 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 255 transitions. [2020-09-25 01:56:45,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:56:45,047 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 255 transitions. [2020-09-25 01:56:45,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 01:56:45,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:56:45,050 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 01:56:45,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:56:45,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:56:45,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:56:45,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1782587461, now seen corresponding path program 1 times [2020-09-25 01:56:45,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:56:45,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845338957] [2020-09-25 01:56:45,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:56:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:45,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 01:56:50,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:56:50,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 01:56:50,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:56:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-09-25 01:56:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 01:56:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:50,469 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:56:50,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:50,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:56:50,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:50,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 01:56:50,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:50,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:56:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:50,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:50,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:50,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:50,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:50,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:50,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:50,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:56:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:50,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:50,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:50,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:56:50,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:50,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:56:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:50,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:50,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:56:50,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:50,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:50,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:56:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:50,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:50,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:50,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:56:50,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:50,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:50,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:56:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:50,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:56:50,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:50,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:50,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 01:56:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:50,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:56:50,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:50,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:56:50,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:56:50,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:50,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:56:50,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:56:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:56:50,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:56:50,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:56:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 01:56:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:50,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:50,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:50,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:50,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:50,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-25 01:56:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:50,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:50,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:50,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:50,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:50,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:50,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:50,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:50,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-09-25 01:56:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:50,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:50,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:50,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:50,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:50,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:56:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 01:56:50,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845338957] [2020-09-25 01:56:50,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:56:50,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:56:50,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762675735] [2020-09-25 01:56:50,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:56:50,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:56:50,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:56:50,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:56:50,797 INFO L87 Difference]: Start difference. First operand 237 states and 255 transitions. Second operand 6 states. [2020-09-25 01:56:51,340 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:56:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:56:52,986 INFO L93 Difference]: Finished difference Result 555 states and 645 transitions. [2020-09-25 01:56:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:56:52,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2020-09-25 01:56:52,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:56:52,991 INFO L225 Difference]: With dead ends: 555 [2020-09-25 01:56:52,991 INFO L226 Difference]: Without dead ends: 433 [2020-09-25 01:56:52,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:56:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-09-25 01:56:53,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 349. [2020-09-25 01:56:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-09-25 01:56:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 386 transitions. [2020-09-25 01:56:53,050 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 386 transitions. Word has length 174 [2020-09-25 01:56:53,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:56:53,051 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 386 transitions. [2020-09-25 01:56:53,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:56:53,051 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 386 transitions. [2020-09-25 01:56:53,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 01:56:53,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:56:53,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:56:53,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:56:53,054 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:56:53,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:56:53,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1899572148, now seen corresponding path program 1 times [2020-09-25 01:56:53,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:56:53,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964411821] [2020-09-25 01:56:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:56:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:53,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:55,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 01:56:58,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:56:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 01:56:58,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:56:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-09-25 01:56:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:56:58,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:56:58,615 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:56:58,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:58,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 01:56:58,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:58,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 01:56:58,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:58,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:58,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:58,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:58,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 01:56:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:58,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:58,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:58,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:58,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:58,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:56:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:58,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:58,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:58,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:58,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:58,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:58,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:58,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:58,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 01:56:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:58,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:56:58,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:58,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:58,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 01:56:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:56:58,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:58,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:58,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:58,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:58,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:58,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 01:56:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:58,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:56:58,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:58,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:58,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:58,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:58,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-25 01:56:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:58,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:56:58,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:58,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:56:58,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:58,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:58,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:58,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:58,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:56:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:58,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 01:56:58,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:58,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:58,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:58,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:56:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:58,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:56:58,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:56:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:56:58,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-25 01:56:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:58,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:58,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:58,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:56:58,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:56:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:56:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:58,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-25 01:56:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:56:58,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:56:58,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:56:58,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:56:58,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:56:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:56:58,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:56:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:56:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:56:58,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:56:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:56:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 01:56:59,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964411821] [2020-09-25 01:56:59,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:56:59,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 01:56:59,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213430814] [2020-09-25 01:56:59,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:56:59,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:56:59,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:56:59,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:56:59,020 INFO L87 Difference]: Start difference. First operand 349 states and 386 transitions. Second operand 10 states. [2020-09-25 01:56:59,752 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:00,879 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:01,170 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 01:57:02,068 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:57:02,407 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-25 01:57:02,711 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-25 01:57:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:57:02,775 INFO L93 Difference]: Finished difference Result 580 states and 688 transitions. [2020-09-25 01:57:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 01:57:02,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 179 [2020-09-25 01:57:02,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:57:02,777 INFO L225 Difference]: With dead ends: 580 [2020-09-25 01:57:02,778 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:57:02,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-09-25 01:57:02,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:57:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:57:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:57:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:57:02,783 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 179 [2020-09-25 01:57:02,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:57:02,783 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:57:02,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:57:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:57:02,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:57:02,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:57:02,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:57:02,970 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:03,143 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:03,314 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:03,490 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:03,654 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:03,821 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:04,117 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 7 [2020-09-25 01:57:04,281 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:04,449 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:04,611 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:04,723 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 7 [2020-09-25 01:57:04,883 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:05,001 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 7 [2020-09-25 01:57:05,324 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 01:57:05,647 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 01:57:05,972 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 01:57:06,294 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 01:57:06,438 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:57:06,590 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:06,750 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:06,927 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:07,085 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:07,237 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:07,399 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:07,557 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:07,714 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:07,868 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:08,025 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:08,131 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 7 [2020-09-25 01:57:08,289 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:08,448 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:08,601 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:08,754 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:08,910 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:09,066 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:09,223 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:09,380 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:09,541 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:09,708 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:09,861 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:10,019 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:10,175 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:10,333 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:10,494 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:10,647 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:10,924 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 7 [2020-09-25 01:57:11,083 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:11,241 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:11,398 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:11,502 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 7 [2020-09-25 01:57:11,660 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:11,812 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:11,970 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:12,127 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:12,281 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:12,439 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:12,603 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:12,762 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:12,920 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:13,076 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:13,263 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:57:13,421 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:13,578 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:13,736 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:13,897 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:57:14,314 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 9 [2020-09-25 01:57:14,519 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 25 [2020-09-25 01:57:14,731 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 1 [2020-09-25 01:57:15,001 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 1 [2020-09-25 01:57:15,216 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 25 [2020-09-25 01:57:15,453 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 25 [2020-09-25 01:57:15,695 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 10 [2020-09-25 01:57:15,948 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:57:16,147 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 1