/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_spec3_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:50:06,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:50:06,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:50:06,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:50:06,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:50:06,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:50:06,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:50:06,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:50:06,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:50:06,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:50:06,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:50:06,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:50:06,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:50:06,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:50:06,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:50:06,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:50:06,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:50:06,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:50:06,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:50:06,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:50:06,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:50:06,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:50:06,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:50:06,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:50:06,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:50:06,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:50:06,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:50:06,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:50:06,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:50:06,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:50:06,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:50:06,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:50:06,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:50:06,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:50:06,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:50:06,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:50:06,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:50:06,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:50:06,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:50:06,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:50:06,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:50:06,474 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 01:50:06,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:50:06,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:50:06,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:50:06,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:50:06,518 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:50:06,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:50:06,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:50:06,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:50:06,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:50:06,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:50:06,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:50:06,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:50:06,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:50:06,521 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:50:06,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:50:06,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:50:06,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:50:06,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:50:06,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:50:06,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:50:06,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:50:06,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:50:06,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:50:06,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:50:06,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:50:06,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:50:06,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:50:06,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:50:06,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:50:06,525 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 01:50:07,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:50:07,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:50:07,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:50:07,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:50:07,025 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:50:07,027 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2020-09-25 01:50:07,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60a091fd7/3731a785977b44ac97baec953d2bfd19/FLAG356f89a79 [2020-09-25 01:50:07,804 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:50:07,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product26.cil.c [2020-09-25 01:50:07,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60a091fd7/3731a785977b44ac97baec953d2bfd19/FLAG356f89a79 [2020-09-25 01:50:08,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60a091fd7/3731a785977b44ac97baec953d2bfd19 [2020-09-25 01:50:08,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:50:08,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:50:08,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:50:08,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:50:08,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:50:08,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:50:08" (1/1) ... [2020-09-25 01:50:08,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c63137c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:08, skipping insertion in model container [2020-09-25 01:50:08,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:50:08" (1/1) ... [2020-09-25 01:50:08,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:50:08,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:50:08,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:50:08,629 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:50:08,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:50:08,765 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:50:08,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:08 WrapperNode [2020-09-25 01:50:08,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:50:08,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:50:08,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:50:08,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:50:08,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:08" (1/1) ... [2020-09-25 01:50:08,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:08" (1/1) ... [2020-09-25 01:50:08,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:08" (1/1) ... [2020-09-25 01:50:08,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:08" (1/1) ... [2020-09-25 01:50:08,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:08" (1/1) ... [2020-09-25 01:50:08,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:08" (1/1) ... [2020-09-25 01:50:08,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:08" (1/1) ... [2020-09-25 01:50:08,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:50:08,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:50:08,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:50:08,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:50:08,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:08" (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 01:50:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:50:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:50:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:50:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:50:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:50:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:50:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:50:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:50:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:50:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:50:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:50:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:50:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:50:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:50:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:50:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:50:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:50:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:50:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 01:50:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:50:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:50:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:50:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:50:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:50:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:50:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:50:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:50:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:50:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:50:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 01:50:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:50:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:50:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:50:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:50:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:50:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 01:50:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:50:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:50:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 01:50:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:50:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:50:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:50:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:50:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:50:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:50:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:50:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:50:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:50:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:50:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:50:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:50:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:50:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:50:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:50:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:50:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:50:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:50:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:50:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:50:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:50:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 01:50:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:50:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:50:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:50:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:50:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:50:08,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:50:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:50:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:50:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:50:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:50:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:50:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:50:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:50:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:50:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:50:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:50:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:50:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:50:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:50:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:50:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:50:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:50:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 01:50:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:50:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:50:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 01:50:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 01:50:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:50:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:50:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:50:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:50:10,083 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:50:10,083 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:50:10,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:50:10 BoogieIcfgContainer [2020-09-25 01:50:10,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:50:10,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:50:10,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:50:10,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:50:10,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:50:08" (1/3) ... [2020-09-25 01:50:10,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637afe23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:50:10, skipping insertion in model container [2020-09-25 01:50:10,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:50:08" (2/3) ... [2020-09-25 01:50:10,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637afe23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:50:10, skipping insertion in model container [2020-09-25 01:50:10,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:50:10" (3/3) ... [2020-09-25 01:50:10,102 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product26.cil.c [2020-09-25 01:50:10,114 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:50:10,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:50:10,150 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:50:10,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:50:10,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:50:10,190 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:50:10,190 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:50:10,190 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:50:10,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:50:10,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:50:10,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:50:10,222 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-09-25 01:50:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 01:50:10,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:10,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:10,243 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:10,249 INFO L82 PathProgramCache]: Analyzing trace with hash -502047938, now seen corresponding path program 1 times [2020-09-25 01:50:10,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:10,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208271391] [2020-09-25 01:50:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:11,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:15,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:15,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 01:50:15,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:50:15,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 01:50:15,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:15,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:50:15,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:15,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 01:50:16,168 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:50:16,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:50:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:16,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:16,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:16,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:50:16,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:16,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 01:50:16,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:16,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:50:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:16,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:16,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:16,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:16,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:16,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:16,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:16,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:16,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:50:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:16,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:16,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:16,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:16,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:16,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:16,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:16,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:16,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:16,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:50:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:16,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:16,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:16,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:16,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:50:16,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:16,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:16,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:16,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:16,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:50:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:16,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:16,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:16,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:16,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:16,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:50:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:16,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:16,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:16,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:16,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:16,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:16,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:50:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:16,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:16,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:16,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:16,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:16,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:16,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:16,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 01:50:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:16,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:16,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:16,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:16,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:16,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:50:16,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208271391] [2020-09-25 01:50:16,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:50:16,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:50:16,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239188031] [2020-09-25 01:50:16,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:50:16,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:50:16,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:50:16,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:50:16,490 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2020-09-25 01:50:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:50:17,868 INFO L93 Difference]: Finished difference Result 444 states and 527 transitions. [2020-09-25 01:50:17,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:50:17,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 01:50:17,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:50:17,892 INFO L225 Difference]: With dead ends: 444 [2020-09-25 01:50:17,893 INFO L226 Difference]: Without dead ends: 279 [2020-09-25 01:50:17,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:50:17,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-25 01:50:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 239. [2020-09-25 01:50:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-25 01:50:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 257 transitions. [2020-09-25 01:50:18,023 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 257 transitions. Word has length 153 [2020-09-25 01:50:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:50:18,026 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 257 transitions. [2020-09-25 01:50:18,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:50:18,026 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 257 transitions. [2020-09-25 01:50:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 01:50:18,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:18,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:18,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:50:18,039 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:18,039 INFO L82 PathProgramCache]: Analyzing trace with hash -394974432, now seen corresponding path program 1 times [2020-09-25 01:50:18,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:18,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131796120] [2020-09-25 01:50:18,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:18,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:18,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:19,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:23,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:23,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 01:50:23,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:50:23,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 01:50:23,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:50:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:50:23,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:23,459 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:50:23,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:50:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:23,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:23,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:23,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:50:23,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:23,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 01:50:23,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:23,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:23,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:23,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:23,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:50:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:23,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:23,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:23,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:23,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:23,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:23,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:23,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:23,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:50:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:23,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:23,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:23,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:23,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:50:23,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:23,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:23,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:23,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:23,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:23,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:50:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:23,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:23,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:23,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:50:23,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:23,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:23,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:50:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:23,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:23,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:23,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:23,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:23,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:23,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:23,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:23,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 01:50:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:23,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:23,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:23,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:23,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:23,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:23,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:23,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:23,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:23,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:23,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 01:50:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:23,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:23,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:23,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:23,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:23,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:23,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:23,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:23,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:23,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 01:50:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:23,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:23,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:23,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:23,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:23,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:23,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:50:23,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131796120] [2020-09-25 01:50:23,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:50:23,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:50:23,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560056020] [2020-09-25 01:50:23,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:50:23,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:50:23,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:50:23,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:50:23,700 INFO L87 Difference]: Start difference. First operand 239 states and 257 transitions. Second operand 4 states. [2020-09-25 01:50:24,381 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:50:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:50:25,165 INFO L93 Difference]: Finished difference Result 357 states and 398 transitions. [2020-09-25 01:50:25,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:50:25,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 01:50:25,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:50:25,170 INFO L225 Difference]: With dead ends: 357 [2020-09-25 01:50:25,170 INFO L226 Difference]: Without dead ends: 262 [2020-09-25 01:50:25,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:50:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-25 01:50:25,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 229. [2020-09-25 01:50:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-25 01:50:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 244 transitions. [2020-09-25 01:50:25,214 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 244 transitions. Word has length 154 [2020-09-25 01:50:25,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:50:25,215 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 244 transitions. [2020-09-25 01:50:25,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:50:25,215 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 244 transitions. [2020-09-25 01:50:25,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 01:50:25,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:25,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:25,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:50:25,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:25,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:25,218 INFO L82 PathProgramCache]: Analyzing trace with hash 334647312, now seen corresponding path program 1 times [2020-09-25 01:50:25,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:25,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596758790] [2020-09-25 01:50:25,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:25,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:28,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:28,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 01:50:28,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:50:28,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2764 [2020-09-25 01:50:28,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:50:28,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:50:28,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:28,335 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:50:28,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:50:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:28,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:28,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:28,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:50:28,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 01:50:28,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:50:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:28,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:28,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:28,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:50:28,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:28,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:28,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:50:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:28,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:28,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:28,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:28,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:50:28,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:28,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:50:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:28,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:28,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:28,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:28,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:28,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:28,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:28,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:50:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:28,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:28,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:28,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:28,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:28,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:50:28,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:28,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:28,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:28,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:28,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:50:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:28,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:28,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:50:28,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:28,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:28,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:28,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:50:28,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:28,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 01:50:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:28,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:28,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:28,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:28,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:28,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:28,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 01:50:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:28,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:28,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:28,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:28,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:28,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:28,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:28,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-25 01:50:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:28,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:28,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:28,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:28,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:28,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:50:28,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596758790] [2020-09-25 01:50:28,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:50:28,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:50:28,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995025546] [2020-09-25 01:50:28,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:50:28,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:50:28,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:50:28,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:50:28,568 INFO L87 Difference]: Start difference. First operand 229 states and 244 transitions. Second operand 5 states. [2020-09-25 01:50:29,046 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:50:29,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:50:29,942 INFO L93 Difference]: Finished difference Result 403 states and 460 transitions. [2020-09-25 01:50:29,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:50:29,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 01:50:29,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:50:29,946 INFO L225 Difference]: With dead ends: 403 [2020-09-25 01:50:29,946 INFO L226 Difference]: Without dead ends: 284 [2020-09-25 01:50:29,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:50:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-25 01:50:29,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 229. [2020-09-25 01:50:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-25 01:50:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 243 transitions. [2020-09-25 01:50:30,001 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 243 transitions. Word has length 167 [2020-09-25 01:50:30,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:50:30,003 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 243 transitions. [2020-09-25 01:50:30,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:50:30,003 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 243 transitions. [2020-09-25 01:50:30,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 01:50:30,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:30,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:30,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:50:30,006 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:30,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1802535089, now seen corresponding path program 1 times [2020-09-25 01:50:30,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:30,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120712670] [2020-09-25 01:50:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:31,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:31,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 01:50:31,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:31,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1793 [2020-09-25 01:50:31,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 01:50:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 01:50:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 01:50:31,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:32,185 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:50:32,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:50:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:32,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:32,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:32,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:50:32,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:32,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 01:50:32,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:32,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 01:50:32,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:50:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:32,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:32,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:32,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:32,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:32,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:32,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:50:32,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:50:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:32,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:32,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:32,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:32,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:32,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:32,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:50:32,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:32,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:50:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:32,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:32,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:32,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:32,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:50:32,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:32,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:50:32,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:32,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:50:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:32,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:32,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:32,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:32,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:32,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:32,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:32,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:50:32,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:32,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:50:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:32,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:32,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:32,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:50:32,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:32,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:50:32,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:50:32,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:32,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:50:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:32,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:32,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:32,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 01:50:32,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:32,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:50:32,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 01:50:32,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:32,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:50:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:32,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:32,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:32,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:32,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:32,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:32,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:32,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:32,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-25 01:50:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:32,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:32,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:32,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:32,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:32,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:50:32,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:50:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-25 01:50:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:32,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:32,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:32,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:32,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:50:32,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:50:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:50:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:32,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-25 01:50:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:32,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:32,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:32,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:32,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:32,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:50:32,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120712670] [2020-09-25 01:50:32,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:50:32,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 01:50:32,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48201569] [2020-09-25 01:50:32,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:50:32,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:50:32,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:50:32,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:50:32,744 INFO L87 Difference]: Start difference. First operand 229 states and 243 transitions. Second operand 10 states. [2020-09-25 01:50:33,535 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:50:35,132 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:50:35,502 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:50:35,884 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:50:36,250 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:50:36,565 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:50:36,937 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:50:37,254 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:50:38,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:50:38,377 INFO L93 Difference]: Finished difference Result 625 states and 767 transitions. [2020-09-25 01:50:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 01:50:38,377 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 175 [2020-09-25 01:50:38,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:50:38,385 INFO L225 Difference]: With dead ends: 625 [2020-09-25 01:50:38,388 INFO L226 Difference]: Without dead ends: 506 [2020-09-25 01:50:38,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-09-25 01:50:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-09-25 01:50:38,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 340. [2020-09-25 01:50:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-09-25 01:50:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 371 transitions. [2020-09-25 01:50:38,445 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 371 transitions. Word has length 175 [2020-09-25 01:50:38,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:50:38,446 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 371 transitions. [2020-09-25 01:50:38,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:50:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 371 transitions. [2020-09-25 01:50:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 01:50:38,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:38,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:38,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:50:38,450 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:38,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1644182753, now seen corresponding path program 1 times [2020-09-25 01:50:38,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:38,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578988958] [2020-09-25 01:50:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:38,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:41,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:43,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:43,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 01:50:43,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:50:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 01:50:43,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:50:43,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-09-25 01:50:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 01:50:43,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:43,847 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:50:43,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:50:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:43,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:43,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:50:43,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 01:50:43,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:43,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:43,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:44,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:50:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:44,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:44,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:44,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:44,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:44,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:44,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:44,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:44,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:50:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:44,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:44,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:44,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:44,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:50:44,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:44,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:44,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:44,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:44,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:44,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:50:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:44,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:44,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:44,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:44,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:44,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:44,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:44,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:44,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:50:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:44,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:44,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:44,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:44,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:50:44,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:44,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:44,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:44,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:50:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:44,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:44,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:50:44,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:44,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:44,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:44,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:44,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:44,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:44,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:50:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:44,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:44,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:50:44,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:50:44,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:50:44,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:50:44,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 01:50:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:44,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 01:50:44,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:44,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:50:44,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:50:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 01:50:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 01:50:44,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:44,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:50:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:44,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:44,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:50:44,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:44,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:50:44,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:44,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:50:44,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:50:44,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:50:44,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:44,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 01:50:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:44,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:44,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:44,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:44,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:44,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:44,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:44,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:44,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:44,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-25 01:50:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:44,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:44,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:44,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:44,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:44,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:44,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-25 01:50:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:50:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:50:44,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:50:44,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:50:44,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:50:44,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:50:44,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:50:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:50:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:50:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:50:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:50:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:50:44,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578988958] [2020-09-25 01:50:44,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:50:44,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:50:44,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733427112] [2020-09-25 01:50:44,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:50:44,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:50:44,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:50:44,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:50:44,183 INFO L87 Difference]: Start difference. First operand 340 states and 371 transitions. Second operand 8 states. [2020-09-25 01:50:45,186 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:50:45,444 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:50:48,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:50:48,512 INFO L93 Difference]: Finished difference Result 921 states and 1148 transitions. [2020-09-25 01:50:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 01:50:48,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 180 [2020-09-25 01:50:48,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:50:48,519 INFO L225 Difference]: With dead ends: 921 [2020-09-25 01:50:48,519 INFO L226 Difference]: Without dead ends: 691 [2020-09-25 01:50:48,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-09-25 01:50:48,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-09-25 01:50:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 517. [2020-09-25 01:50:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-09-25 01:50:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 584 transitions. [2020-09-25 01:50:48,618 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 584 transitions. Word has length 180 [2020-09-25 01:50:48,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:50:48,619 INFO L479 AbstractCegarLoop]: Abstraction has 517 states and 584 transitions. [2020-09-25 01:50:48,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:50:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 584 transitions. [2020-09-25 01:50:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 01:50:48,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:50:48,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:48,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:50:48,623 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:50:48,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:50:48,624 INFO L82 PathProgramCache]: Analyzing trace with hash 74620443, now seen corresponding path program 1 times [2020-09-25 01:50:48,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:50:48,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762074789] [2020-09-25 01:50:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:50:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:50:48,693 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:50:48,694 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:50:48,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:50:48,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:50:48 BoogieIcfgContainer [2020-09-25 01:50:48,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:50:48,763 INFO L168 Benchmark]: Toolchain (without parser) took 40743.94 ms. Allocated memory was 138.9 MB in the beginning and 728.2 MB in the end (delta: 589.3 MB). Free memory was 101.2 MB in the beginning and 682.2 MB in the end (delta: -581.0 MB). Peak memory consumption was 604.0 MB. Max. memory is 7.1 GB. [2020-09-25 01:50:48,765 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 01:50:48,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 737.70 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 169.9 MB in the end (delta: -69.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-25 01:50:48,766 INFO L168 Benchmark]: Boogie Preprocessor took 106.16 ms. Allocated memory is still 202.4 MB. Free memory was 169.9 MB in the beginning and 165.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:50:48,767 INFO L168 Benchmark]: RCFGBuilder took 1213.79 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 165.8 MB in the beginning and 175.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:50:48,768 INFO L168 Benchmark]: TraceAbstraction took 38668.40 ms. Allocated memory was 233.8 MB in the beginning and 728.2 MB in the end (delta: 494.4 MB). Free memory was 175.3 MB in the beginning and 682.2 MB in the end (delta: -506.9 MB). Peak memory consumption was 583.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:50:48,772 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 737.70 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 169.9 MB in the end (delta: -69.4 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.16 ms. Allocated memory is still 202.4 MB. Free memory was 169.9 MB in the beginning and 165.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1213.79 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 165.8 MB in the beginning and 175.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38668.40 ms. Allocated memory was 233.8 MB in the beginning and 728.2 MB in the end (delta: 494.4 MB). Free memory was 175.3 MB in the beginning and 682.2 MB in the end (delta: -506.9 MB). Peak memory consumption was 583.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 643]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L184] int waterLevel = 1; [L185] int methaneLevelCritical = 0; [L442] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L832] int splverifierCounter ; [L833] int tmp ; [L834] int tmp___0 ; [L835] int tmp___1 ; [L836] int tmp___2 ; [L839] splverifierCounter = 0 [L841] COND TRUE 1 [L843] COND TRUE splverifierCounter < 4 [L849] tmp = __VERIFIER_nondet_int() [L851] COND TRUE \read(tmp) [L853] CALL waterRise() [L202] COND TRUE waterLevel < 2 [L203] waterLevel = waterLevel + 1 [L853] RET waterRise() [L859] tmp___0 = __VERIFIER_nondet_int() [L861] COND FALSE !(\read(tmp___0)) [L869] tmp___2 = __VERIFIER_nondet_int() [L871] COND TRUE \read(tmp___2) [L873] CALL startSystem() [L826] systemActive = 1 [L873] RET startSystem() [L886] CALL timeShift() [L660] COND FALSE !(\read(pumpRunning)) [L667] COND TRUE \read(systemActive) [L669] CALL processEnvironment() [L689] int tmp ; [L692] COND FALSE !(\read(pumpRunning)) [L707] FCALL processEnvironment__wrappee__base() [L669] RET processEnvironment() [L675] CALL __utac_acc__Specification3_spec__1() [L899] int tmp ; [L900] int tmp___0 ; [L901] int tmp___1 ; [L905] CALL, EXPR isMethaneLevelCritical() [L223] int retValue_acc ; [L226] retValue_acc = methaneLevelCritical [L227] return (retValue_acc); [L905] RET, EXPR isMethaneLevelCritical() [L905] tmp = isMethaneLevelCritical() [L907] COND FALSE !(\read(tmp)) [L911] CALL, EXPR getWaterLevel() [L255] int retValue_acc ; [L258] retValue_acc = waterLevel [L259] return (retValue_acc); [L911] RET, EXPR getWaterLevel() [L911] tmp___0 = getWaterLevel() [L913] COND TRUE tmp___0 == 2 [L915] CALL, EXPR isPumpRunning() [L759] int retValue_acc ; [L762] retValue_acc = pumpRunning [L763] return (retValue_acc); [L915] RET, EXPR isPumpRunning() [L915] tmp___1 = isPumpRunning() [L917] COND FALSE !(\read(tmp___1)) [L921] CALL __automaton_fail() [L643] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 622 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1257 SDtfs, 2073 SDslu, 1277 SDs, 0 SdLazy, 2982 SolverSat, 669 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=517occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 468 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 22.8s InterpolantComputationTime, 1009 NumberOfCodeBlocks, 1009 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 824 ConstructedInterpolants, 0 QuantifiedInterpolants, 317971 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...