/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:06:21,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:06:21,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:06:21,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:06:21,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:06:21,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:06:21,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:06:21,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:06:21,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:06:21,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:06:21,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:06:21,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:06:21,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:06:21,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:06:21,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:06:21,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:06:21,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:06:21,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:06:21,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:06:21,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:06:21,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:06:21,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:06:21,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:06:21,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:06:21,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:06:21,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:06:21,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:06:21,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:06:21,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:06:21,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:06:21,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:06:21,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:06:21,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:06:21,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:06:21,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:06:21,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:06:21,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:06:21,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:06:21,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:06:21,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:06:21,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:06:21,771 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 04:06:21,820 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:06:21,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:06:21,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:06:21,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:06:21,824 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:06:21,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:06:21,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:06:21,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:06:21,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:06:21,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:06:21,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:06:21,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:06:21,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:06:21,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:06:21,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:06:21,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:06:21,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:06:21,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:06:21,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:06:21,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:06:21,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:06:21,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:06:21,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:06:21,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:06:21,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:06:21,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:06:21,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:06:21,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:06:21,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:06:21,830 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:06:22,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:06:22,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:06:22,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:06:22,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:06:22,294 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:06:22,296 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-25 04:06:22,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf8dd607/a3217de11043457a9d7146d9704ed9ed/FLAGbc260218e [2020-09-25 04:06:22,950 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:06:22,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-09-25 04:06:22,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf8dd607/a3217de11043457a9d7146d9704ed9ed/FLAGbc260218e [2020-09-25 04:06:23,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf8dd607/a3217de11043457a9d7146d9704ed9ed [2020-09-25 04:06:23,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:06:23,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:06:23,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:06:23,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:06:23,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:06:23,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:06:23" (1/1) ... [2020-09-25 04:06:23,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:06:23, skipping insertion in model container [2020-09-25 04:06:23,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:06:23" (1/1) ... [2020-09-25 04:06:23,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:06:23,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:06:23,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:06:23,894 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:06:23,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:06:24,025 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:06:24,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:06:24 WrapperNode [2020-09-25 04:06:24,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:06:24,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:06:24,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:06:24,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:06:24,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:06:24" (1/1) ... [2020-09-25 04:06:24,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:06:24" (1/1) ... [2020-09-25 04:06:24,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:06:24" (1/1) ... [2020-09-25 04:06:24,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:06:24" (1/1) ... [2020-09-25 04:06:24,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:06:24" (1/1) ... [2020-09-25 04:06:24,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:06:24" (1/1) ... [2020-09-25 04:06:24,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:06:24" (1/1) ... [2020-09-25 04:06:24,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:06:24,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:06:24,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:06:24,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:06:24,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:06:24" (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 04:06:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:06:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:06:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 04:06:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 04:06:24,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 04:06:24,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 04:06:24,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 04:06:24,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 04:06:24,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 04:06:24,214 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 04:06:24,215 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 04:06:24,215 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 04:06:24,215 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 04:06:24,215 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 04:06:24,215 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 04:06:24,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 04:06:24,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 04:06:24,217 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 04:06:24,217 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 04:06:24,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 04:06:24,217 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 04:06:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 04:06:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 04:06:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 04:06:24,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 04:06:24,219 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 04:06:24,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 04:06:24,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 04:06:24,220 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 04:06:24,220 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 04:06:24,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 04:06:24,220 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 04:06:24,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:06:24,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 04:06:24,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 04:06:24,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 04:06:24,221 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 04:06:24,221 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 04:06:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:06:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:06:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 04:06:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 04:06:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:06:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 04:06:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 04:06:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:06:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:06:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:06:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:06:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 04:06:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:06:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 04:06:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 04:06:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:06:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 04:06:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 04:06:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:06:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 04:06:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 04:06:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 04:06:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 04:06:24,225 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 04:06:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 04:06:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 04:06:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 04:06:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 04:06:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 04:06:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 04:06:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 04:06:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 04:06:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 04:06:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 04:06:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 04:06:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 04:06:24,227 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 04:06:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 04:06:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 04:06:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 04:06:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 04:06:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 04:06:24,228 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 04:06:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 04:06:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 04:06:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 04:06:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 04:06:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:06:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 04:06:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:06:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 04:06:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:06:25,466 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:06:25,466 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 04:06:25,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:06:25 BoogieIcfgContainer [2020-09-25 04:06:25,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:06:25,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:06:25,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:06:25,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:06:25,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:06:23" (1/3) ... [2020-09-25 04:06:25,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3142564c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:06:25, skipping insertion in model container [2020-09-25 04:06:25,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:06:24" (2/3) ... [2020-09-25 04:06:25,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3142564c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:06:25, skipping insertion in model container [2020-09-25 04:06:25,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:06:25" (3/3) ... [2020-09-25 04:06:25,483 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-09-25 04:06:25,495 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:06:25,506 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:06:25,528 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:06:25,560 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:06:25,560 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:06:25,560 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:06:25,560 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:06:25,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:06:25,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:06:25,561 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:06:25,561 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:06:25,588 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states. [2020-09-25 04:06:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 04:06:25,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:06:25,609 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 04:06:25,609 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:06:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:06:25,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1461403982, now seen corresponding path program 1 times [2020-09-25 04:06:25,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:06:25,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631419070] [2020-09-25 04:06:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:06:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:26,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:27,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:30,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:30,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 04:06:30,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:06:30,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4400 [2020-09-25 04:06:30,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:30,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 04:06:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:30,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:06:30,871 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 04:06:30,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:06:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:30,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:31,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:31,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:06:31,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 04:06:31,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:31,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 04:06:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:31,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:31,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:31,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:06:31,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:31,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:06:31,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:31,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:31,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:31,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 04:06:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:31,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:31,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:06:31,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:31,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:06:31,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:31,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:31,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 04:06:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:31,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:31,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:31,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:31,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:31,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:06:31,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:31,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:31,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:31,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 04:06:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:31,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:31,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:31,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:06:31,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:31,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:06:31,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:31,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:31,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:31,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:31,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 04:06:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:31,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:31,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:31,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:31,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:06:31,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:31,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:06:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:31,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:31,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 04:06:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:31,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:31,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:31,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:31,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:06:31,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:31,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:31,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:31,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:06:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:31,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:31,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 04:06:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:31,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:31,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:31,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:31,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:31,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:06:31,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:31,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:06:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:31,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:31,159 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 04:06:31,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631419070] [2020-09-25 04:06:31,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:06:31,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:06:31,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900587073] [2020-09-25 04:06:31,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:06:31,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:06:31,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:06:31,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:06:31,194 INFO L87 Difference]: Start difference. First operand 306 states. Second operand 3 states. [2020-09-25 04:06:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:06:32,642 INFO L93 Difference]: Finished difference Result 477 states and 570 transitions. [2020-09-25 04:06:32,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:06:32,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 04:06:32,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:06:32,683 INFO L225 Difference]: With dead ends: 477 [2020-09-25 04:06:32,683 INFO L226 Difference]: Without dead ends: 296 [2020-09-25 04:06:32,692 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 04:06:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-25 04:06:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 255. [2020-09-25 04:06:32,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-25 04:06:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 278 transitions. [2020-09-25 04:06:32,872 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 278 transitions. Word has length 153 [2020-09-25 04:06:32,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:06:32,875 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 278 transitions. [2020-09-25 04:06:32,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:06:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 278 transitions. [2020-09-25 04:06:32,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 04:06:32,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:06:32,892 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 04:06:32,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:06:32,892 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:06:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:06:32,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1820086342, now seen corresponding path program 1 times [2020-09-25 04:06:32,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:06:32,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200809177] [2020-09-25 04:06:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:06:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:33,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:38,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:38,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 04:06:38,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:06:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 04:06:38,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:38,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 04:06:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:06:38,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:38,307 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 04:06:38,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:06:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:38,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:38,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:06:38,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:38,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 04:06:38,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:38,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:06:38,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:38,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 04:06:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:38,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:38,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:06:38,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:38,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:06:38,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:38,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:06:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:38,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 04:06:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:38,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:38,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:38,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:06:38,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:06:38,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:38,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:38,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:06:38,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:38,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 04:06:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:38,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:38,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:38,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:38,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:06:38,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:38,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:06:38,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:06:38,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 04:06:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:38,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:06:38,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:38,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:06:38,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:38,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:06:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:06:38,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 04:06:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:38,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:38,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:38,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:38,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:06:38,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:38,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:06:38,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:38,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 04:06:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:38,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:38,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:38,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:38,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:06:38,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:38,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:06:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:38,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:38,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 04:06:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:38,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:38,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:38,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:38,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:06:38,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:38,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:38,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:06:38,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:38,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:06:38,689 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 04:06:38,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200809177] [2020-09-25 04:06:38,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:06:38,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:06:38,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694555975] [2020-09-25 04:06:38,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:06:38,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:06:38,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:06:38,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:06:38,693 INFO L87 Difference]: Start difference. First operand 255 states and 278 transitions. Second operand 4 states. [2020-09-25 04:06:39,199 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 04:06:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:06:40,196 INFO L93 Difference]: Finished difference Result 441 states and 511 transitions. [2020-09-25 04:06:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:06:40,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 04:06:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:06:40,201 INFO L225 Difference]: With dead ends: 441 [2020-09-25 04:06:40,207 INFO L226 Difference]: Without dead ends: 296 [2020-09-25 04:06:40,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 04:06:40,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-25 04:06:40,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 255. [2020-09-25 04:06:40,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-25 04:06:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 277 transitions. [2020-09-25 04:06:40,289 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 277 transitions. Word has length 154 [2020-09-25 04:06:40,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:06:40,292 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 277 transitions. [2020-09-25 04:06:40,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:06:40,293 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 277 transitions. [2020-09-25 04:06:40,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 04:06:40,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:06:40,296 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] [2020-09-25 04:06:40,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:06:40,297 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:06:40,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:06:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash 515182839, now seen corresponding path program 1 times [2020-09-25 04:06:40,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:06:40,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14075836] [2020-09-25 04:06:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:06:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:40,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 04:06:42,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1774 [2020-09-25 04:06:42,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:06:42,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 04:06:42,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 04:06:42,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:06:42,486 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 04:06:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:06:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:42,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:06:42,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 04:06:42,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:42,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:42,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:06:42,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:42,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 04:06:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:06:42,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:06:42,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:06:42,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:06:42,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 04:06:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:42,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:06:42,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:06:42,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:42,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:06:42,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:42,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 04:06:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:42,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:42,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:06:42,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:42,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:06:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:06:42,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 04:06:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:42,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:06:42,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:06:42,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:42,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:42,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:06:42,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:42,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 04:06:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:06:42,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:06:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 04:06:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:42,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:06:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:06:42,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:06:42,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:42,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:42,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:42,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:42,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:06:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:06:42,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:06:42,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:42,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:42,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 04:06:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:42,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:06:42,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:06:42,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:42,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:06:42,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:06:42,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-25 04:06:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:42,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:42,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:06:42,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:06:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:06:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:06:42,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:06:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-25 04:06:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:06:42,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:06:42,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:06:42,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:06:42,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:06:42,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:06:42,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:06:42,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:06:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:06:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:06:42,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:06:42,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:06:43,042 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 04:06:43,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14075836] [2020-09-25 04:06:43,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:06:43,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 04:06:43,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82805629] [2020-09-25 04:06:43,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:06:43,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:06:43,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:06:43,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:06:43,045 INFO L87 Difference]: Start difference. First operand 255 states and 277 transitions. Second operand 9 states. [2020-09-25 04:06:43,629 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 04:06:46,065 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 04:06:46,483 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 04:06:46,836 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 04:06:47,136 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 04:06:47,451 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 04:06:47,971 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 04:06:48,292 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 04:06:49,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:06:49,227 INFO L93 Difference]: Finished difference Result 649 states and 811 transitions. [2020-09-25 04:06:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:06:49,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-09-25 04:06:49,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:06:49,232 INFO L225 Difference]: With dead ends: 649 [2020-09-25 04:06:49,233 INFO L226 Difference]: Without dead ends: 480 [2020-09-25 04:06:49,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:06:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-09-25 04:06:49,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 387. [2020-09-25 04:06:49,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-09-25 04:06:49,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 433 transitions. [2020-09-25 04:06:49,294 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 433 transitions. Word has length 176 [2020-09-25 04:06:49,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:06:49,295 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 433 transitions. [2020-09-25 04:06:49,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:06:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 433 transitions. [2020-09-25 04:06:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:06:49,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:06:49,298 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, 1] [2020-09-25 04:06:49,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:06:49,299 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:06:49,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:06:49,299 INFO L82 PathProgramCache]: Analyzing trace with hash -342521873, now seen corresponding path program 1 times [2020-09-25 04:06:49,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:06:49,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672195939] [2020-09-25 04:06:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:06:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 04:06:49,366 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 04:06:49,366 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 04:06:49,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:06:49,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:06:49 BoogieIcfgContainer [2020-09-25 04:06:49,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:06:49,401 INFO L168 Benchmark]: Toolchain (without parser) took 26167.01 ms. Allocated memory was 147.8 MB in the beginning and 538.4 MB in the end (delta: 390.6 MB). Free memory was 102.4 MB in the beginning and 134.5 MB in the end (delta: -32.1 MB). Peak memory consumption was 358.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:06:49,402 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:06:49,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 782.19 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 101.8 MB in the beginning and 170.0 MB in the end (delta: -68.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-09-25 04:06:49,404 INFO L168 Benchmark]: Boogie Preprocessor took 95.06 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 166.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-25 04:06:49,404 INFO L168 Benchmark]: RCFGBuilder took 1352.01 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 166.1 MB in the beginning and 168.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. [2020-09-25 04:06:49,405 INFO L168 Benchmark]: TraceAbstraction took 23923.73 ms. Allocated memory was 233.3 MB in the beginning and 538.4 MB in the end (delta: 305.1 MB). Free memory was 167.5 MB in the beginning and 134.5 MB in the end (delta: 33.1 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2020-09-25 04:06:49,409 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 782.19 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 101.8 MB in the beginning and 170.0 MB in the end (delta: -68.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.06 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 166.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1352.01 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 166.1 MB in the beginning and 168.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23923.73 ms. Allocated memory was 233.3 MB in the beginning and 538.4 MB in the end (delta: 305.1 MB). Free memory was 167.5 MB in the beginning and 134.5 MB in the end (delta: 33.1 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 598]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int pumpRunning = 0; [L416] int systemActive = 1; [L672] int waterLevel = 1; [L673] int methaneLevelCritical = 0; [L761] int cleanupTimeShifts = 4; [L837] int retValue_acc ; [L838] int tmp ; [L842] FCALL select_helpers() [L843] FCALL select_features() [L844] CALL, EXPR valid_product() [L920] int retValue_acc ; [L923] retValue_acc = 1 [L924] return (retValue_acc); [L844] RET, EXPR valid_product() [L844] tmp = valid_product() [L846] COND TRUE \read(tmp) [L848] FCALL setup() [L849] CALL runTest() [L828] CALL test() [L607] int splverifierCounter ; [L608] int tmp ; [L609] int tmp___0 ; [L610] int tmp___1 ; [L611] int tmp___2 ; [L614] splverifierCounter = 0 [L616] COND TRUE 1 [L618] COND TRUE splverifierCounter < 4 [L624] tmp = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp) [L628] CALL waterRise() [L690] COND TRUE waterLevel < 2 [L691] waterLevel = waterLevel + 1 [L628] RET waterRise() [L634] tmp___0 = __VERIFIER_nondet_int() [L636] COND FALSE !(\read(tmp___0)) [L644] tmp___2 = __VERIFIER_nondet_int() [L646] COND TRUE \read(tmp___2) [L659] CALL timeShift() [L423] COND FALSE !(\read(pumpRunning)) [L430] COND TRUE \read(systemActive) [L432] CALL processEnvironment() [L478] int tmp ; [L481] COND FALSE !(\read(pumpRunning)) [L496] CALL processEnvironment__wrappee__lowWaterSensor() [L452] int tmp ; [L455] COND FALSE !(\read(pumpRunning)) [L470] FCALL processEnvironment__wrappee__base() [L496] RET processEnvironment__wrappee__lowWaterSensor() [L432] RET processEnvironment() [L438] CALL __utac_acc__Specification3_spec__1() [L861] int tmp ; [L862] int tmp___0 ; [L863] int tmp___1 ; [L867] CALL, EXPR isMethaneLevelCritical() [L711] int retValue_acc ; [L714] retValue_acc = methaneLevelCritical [L715] return (retValue_acc); [L867] RET, EXPR isMethaneLevelCritical() [L867] tmp = isMethaneLevelCritical() [L869] COND FALSE !(\read(tmp)) [L873] CALL, EXPR getWaterLevel() [L743] int retValue_acc ; [L746] retValue_acc = waterLevel [L747] return (retValue_acc); [L873] RET, EXPR getWaterLevel() [L873] tmp___0 = getWaterLevel() [L875] COND TRUE tmp___0 == 2 [L877] CALL, EXPR isPumpRunning() [L530] int retValue_acc ; [L533] retValue_acc = pumpRunning [L534] return (retValue_acc); [L877] RET, EXPR isPumpRunning() [L877] tmp___1 = isPumpRunning() [L879] COND FALSE !(\read(tmp___1)) [L883] CALL __automaton_fail() [L598] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 621 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 744 SDtfs, 937 SDslu, 677 SDs, 0 SdLazy, 1756 SolverSat, 320 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=387occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 175 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 664 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 480 ConstructedInterpolants, 0 QuantifiedInterpolants, 195770 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...