/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:55:30,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:55:30,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:55:30,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:55:30,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:55:30,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:55:30,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:55:30,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:55:30,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:55:30,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:55:30,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:55:30,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:55:30,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:55:30,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:55:30,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:55:30,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:55:30,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:55:30,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:55:30,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:55:30,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:55:30,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:55:30,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:55:30,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:55:30,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:55:30,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:55:30,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:55:30,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:55:30,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:55:30,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:55:30,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:55:30,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:55:30,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:55:30,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:55:30,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:55:30,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:55:30,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:55:30,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:55:30,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:55:30,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:55:30,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:55:30,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:55:30,773 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 [2020-08-19 00:55:30,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:55:30,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:55:30,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:55:30,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:55:30,828 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:55:30,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:55:30,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:55:30,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:55:30,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:55:30,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:55:30,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:55:30,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:55:30,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:55:30,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:55:30,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:55:30,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:55:30,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:55:30,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:55:30,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:55:30,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:55:30,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:55:30,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:55:30,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:55:30,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:55:30,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:55:30,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:55:30,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:55:30,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:55:30,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:55:30,834 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:55:31,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:55:31,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:55:31,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:55:31,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:55:31,180 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:55:31,181 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-08-19 00:55:31,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ae68589f/c47c034aef7a417799883c86b286e3e4/FLAG69f59b9c3 [2020-08-19 00:55:31,767 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:55:31,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-08-19 00:55:31,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ae68589f/c47c034aef7a417799883c86b286e3e4/FLAG69f59b9c3 [2020-08-19 00:55:32,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ae68589f/c47c034aef7a417799883c86b286e3e4 [2020-08-19 00:55:32,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:55:32,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:55:32,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:55:32,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:55:32,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:55:32,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ed4b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32, skipping insertion in model container [2020-08-19 00:55:32,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:55:32,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:55:32,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:55:32,686 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:55:32,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:55:32,846 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:55:32,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32 WrapperNode [2020-08-19 00:55:32,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:55:32,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:55:32,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:55:32,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:55:32,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (1/1) ... [2020-08-19 00:55:32,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:55:32,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:55:32,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:55:32,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:55:32,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (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 [2020-08-19 00:55:33,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:55:33,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:55:33,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:55:33,006 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:55:33,006 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:55:33,007 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-19 00:55:33,007 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-19 00:55:33,007 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-19 00:55:33,008 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-19 00:55:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-19 00:55:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-19 00:55:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:55:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-19 00:55:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-19 00:55:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:55:33,010 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:55:33,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:55:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:55:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:55:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:55:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:55:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:55:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:55:33,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:55:33,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:55:33,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:55:33,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:55:33,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:55:33,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:55:33,016 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:55:33,016 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:55:33,016 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:55:33,016 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:55:33,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:55:33,017 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:55:33,017 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:55:33,017 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:55:33,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:55:33,017 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:55:33,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:55:33,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:55:33,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:55:33,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:55:33,018 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:55:33,018 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:55:33,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:55:33,019 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:55:33,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:55:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:55:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:55:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:55:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:55:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:55:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:55:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:55:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:55:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:55:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:55:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:55:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:55:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:55:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:55:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:55:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:55:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:55:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:55:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:55:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:55:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:55:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-19 00:55:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:55:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-19 00:55:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-19 00:55:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:55:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-19 00:55:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-19 00:55:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:55:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-19 00:55:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-19 00:55:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-19 00:55:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:55:33,027 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:55:33,028 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:55:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:55:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:55:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:55:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:55:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:55:33,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:55:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:55:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:55:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:55:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:55:33,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:55:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:55:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:55:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:55:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:55:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:55:33,031 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:55:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:55:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:55:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:55:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:55:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:55:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:55:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:55:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:55:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:55:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:55:34,306 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:55:34,306 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:55:34,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:55:34 BoogieIcfgContainer [2020-08-19 00:55:34,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:55:34,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:55:34,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:55:34,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:55:34,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:55:32" (1/3) ... [2020-08-19 00:55:34,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617a8584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:55:34, skipping insertion in model container [2020-08-19 00:55:34,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:55:32" (2/3) ... [2020-08-19 00:55:34,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617a8584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:55:34, skipping insertion in model container [2020-08-19 00:55:34,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:55:34" (3/3) ... [2020-08-19 00:55:34,328 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_productSimulator.cil.c [2020-08-19 00:55:34,340 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:55:34,351 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:55:34,362 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:55:34,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:55:34,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:55:34,387 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:55:34,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:55:34,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:55:34,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:55:34,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:55:34,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:55:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-19 00:55:34,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 00:55:34,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:34,436 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:34,436 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:34,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:34,441 INFO L82 PathProgramCache]: Analyzing trace with hash -777436733, now seen corresponding path program 1 times [2020-08-19 00:55:34,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:34,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473525046] [2020-08-19 00:55:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,230 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:55:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:55:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:55:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:55:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:55:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:55:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:55:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 00:55:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:55:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:35,401 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:55:35,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473525046] [2020-08-19 00:55:35,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:35,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:55:35,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083647072] [2020-08-19 00:55:35,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:55:35,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:35,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:55:35,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:55:35,429 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 5 states. [2020-08-19 00:55:37,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:37,743 INFO L93 Difference]: Finished difference Result 436 states and 577 transitions. [2020-08-19 00:55:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 00:55:37,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-08-19 00:55:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:37,764 INFO L225 Difference]: With dead ends: 436 [2020-08-19 00:55:37,765 INFO L226 Difference]: Without dead ends: 248 [2020-08-19 00:55:37,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:55:37,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-19 00:55:37,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 199. [2020-08-19 00:55:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-19 00:55:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2020-08-19 00:55:37,884 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 245 transitions. Word has length 78 [2020-08-19 00:55:37,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:37,884 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-08-19 00:55:37,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:55:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 245 transitions. [2020-08-19 00:55:37,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 00:55:37,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:37,890 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:37,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:55:37,891 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:37,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:37,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1216022007, now seen corresponding path program 1 times [2020-08-19 00:55:37,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:37,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371515595] [2020-08-19 00:55:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,366 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:55:38,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:55:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:55:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:55:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:55:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:55:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:55:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 00:55:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 00:55:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:55:38,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371515595] [2020-08-19 00:55:38,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:38,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:55:38,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203087030] [2020-08-19 00:55:38,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:55:38,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:38,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:55:38,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:55:38,486 INFO L87 Difference]: Start difference. First operand 199 states and 245 transitions. Second operand 6 states. [2020-08-19 00:55:39,235 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 00:55:40,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:40,909 INFO L93 Difference]: Finished difference Result 360 states and 455 transitions. [2020-08-19 00:55:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:55:40,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-08-19 00:55:40,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:40,915 INFO L225 Difference]: With dead ends: 360 [2020-08-19 00:55:40,915 INFO L226 Difference]: Without dead ends: 232 [2020-08-19 00:55:40,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:55:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-08-19 00:55:40,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 190. [2020-08-19 00:55:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-19 00:55:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 233 transitions. [2020-08-19 00:55:40,972 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 233 transitions. Word has length 79 [2020-08-19 00:55:40,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:40,972 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 233 transitions. [2020-08-19 00:55:40,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:55:40,973 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 233 transitions. [2020-08-19 00:55:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 00:55:40,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:40,976 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:40,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:55:40,976 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:40,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2141579182, now seen corresponding path program 1 times [2020-08-19 00:55:40,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:40,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289157000] [2020-08-19 00:55:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,406 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:55:41,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:55:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:55:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:55:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:55:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:55:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:55:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:55:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:55:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:55:41,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289157000] [2020-08-19 00:55:41,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:41,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:55:41,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405594531] [2020-08-19 00:55:41,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:55:41,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:41,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:55:41,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:55:41,604 INFO L87 Difference]: Start difference. First operand 190 states and 233 transitions. Second operand 12 states. [2020-08-19 00:55:42,186 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:55:42,848 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-19 00:55:43,641 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-19 00:55:44,759 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:55:45,137 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 00:55:48,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:48,835 INFO L93 Difference]: Finished difference Result 619 states and 790 transitions. [2020-08-19 00:55:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:55:48,838 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-19 00:55:48,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:48,844 INFO L225 Difference]: With dead ends: 619 [2020-08-19 00:55:48,845 INFO L226 Difference]: Without dead ends: 470 [2020-08-19 00:55:48,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-19 00:55:48,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-08-19 00:55:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 379. [2020-08-19 00:55:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-19 00:55:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 476 transitions. [2020-08-19 00:55:48,957 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 476 transitions. Word has length 84 [2020-08-19 00:55:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:48,958 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 476 transitions. [2020-08-19 00:55:48,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:55:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 476 transitions. [2020-08-19 00:55:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 00:55:48,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:48,962 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:48,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:55:48,962 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:48,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1535963779, now seen corresponding path program 1 times [2020-08-19 00:55:48,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:48,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426416056] [2020-08-19 00:55:48,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,341 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:55:49,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:55:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:55:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:55:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:55:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:55:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:55:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 00:55:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 00:55:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 00:55:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:55:49,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426416056] [2020-08-19 00:55:49,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:49,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:55:49,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656630040] [2020-08-19 00:55:49,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:55:49,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:49,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:55:49,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:55:49,529 INFO L87 Difference]: Start difference. First operand 379 states and 476 transitions. Second operand 10 states. [2020-08-19 00:55:50,028 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:55:51,645 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:55:52,144 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:55:52,407 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:55:52,761 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:55:53,404 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 00:55:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:55,601 INFO L93 Difference]: Finished difference Result 1218 states and 1607 transitions. [2020-08-19 00:55:55,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:55:55,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-19 00:55:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:55,609 INFO L225 Difference]: With dead ends: 1218 [2020-08-19 00:55:55,610 INFO L226 Difference]: Without dead ends: 880 [2020-08-19 00:55:55,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-08-19 00:55:55,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-19 00:55:55,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 696. [2020-08-19 00:55:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-08-19 00:55:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 880 transitions. [2020-08-19 00:55:55,823 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 880 transitions. Word has length 90 [2020-08-19 00:55:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:55,823 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 880 transitions. [2020-08-19 00:55:55,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:55:55,824 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 880 transitions. [2020-08-19 00:55:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 00:55:55,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:55,827 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:55:55,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:55:55,828 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:55,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:55,828 INFO L82 PathProgramCache]: Analyzing trace with hash -859073223, now seen corresponding path program 1 times [2020-08-19 00:55:55,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:55,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856098382] [2020-08-19 00:55:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,173 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:55:56,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:55:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:55:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:55:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:55:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:55:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:55:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 00:55:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 00:55:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:55:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 00:55:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:55:56,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856098382] [2020-08-19 00:55:56,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:56,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:55:56,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343213405] [2020-08-19 00:55:56,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:55:56,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:56,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:55:56,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:55:56,405 INFO L87 Difference]: Start difference. First operand 696 states and 880 transitions. Second operand 11 states. [2020-08-19 00:55:57,015 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:55:58,598 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:55:58,962 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:55:59,262 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:56:00,232 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:56:00,580 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 00:56:02,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:02,997 INFO L93 Difference]: Finished difference Result 1972 states and 2746 transitions. [2020-08-19 00:56:02,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 00:56:02,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-19 00:56:02,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:03,006 INFO L225 Difference]: With dead ends: 1972 [2020-08-19 00:56:03,006 INFO L226 Difference]: Without dead ends: 1317 [2020-08-19 00:56:03,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:56:03,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-19 00:56:03,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1112. [2020-08-19 00:56:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2020-08-19 00:56:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1445 transitions. [2020-08-19 00:56:03,331 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1445 transitions. Word has length 94 [2020-08-19 00:56:03,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:03,332 INFO L479 AbstractCegarLoop]: Abstraction has 1112 states and 1445 transitions. [2020-08-19 00:56:03,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:56:03,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1445 transitions. [2020-08-19 00:56:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-19 00:56:03,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:03,337 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:03,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:56:03,337 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:03,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:03,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1170559539, now seen corresponding path program 1 times [2020-08-19 00:56:03,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:03,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682934584] [2020-08-19 00:56:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,632 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:56:03,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:56:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:56:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:56:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:56:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:56:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:56:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:56:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 00:56:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 00:56:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:56:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 00:56:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 00:56:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:56:03,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682934584] [2020-08-19 00:56:03,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:03,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:56:03,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770472430] [2020-08-19 00:56:03,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:56:03,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:03,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:56:03,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:56:03,935 INFO L87 Difference]: Start difference. First operand 1112 states and 1445 transitions. Second operand 11 states. [2020-08-19 00:56:06,205 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:56:06,523 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-19 00:56:06,815 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 00:56:07,132 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 00:56:08,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:08,940 INFO L93 Difference]: Finished difference Result 2484 states and 3550 transitions. [2020-08-19 00:56:08,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 00:56:08,941 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 127 [2020-08-19 00:56:08,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:08,951 INFO L225 Difference]: With dead ends: 2484 [2020-08-19 00:56:08,952 INFO L226 Difference]: Without dead ends: 1413 [2020-08-19 00:56:08,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:56:08,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2020-08-19 00:56:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1138. [2020-08-19 00:56:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2020-08-19 00:56:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1473 transitions. [2020-08-19 00:56:09,179 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1473 transitions. Word has length 127 [2020-08-19 00:56:09,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:09,179 INFO L479 AbstractCegarLoop]: Abstraction has 1138 states and 1473 transitions. [2020-08-19 00:56:09,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:56:09,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1473 transitions. [2020-08-19 00:56:09,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-19 00:56:09,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:09,183 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:09,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:56:09,184 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:09,184 INFO L82 PathProgramCache]: Analyzing trace with hash 141200241, now seen corresponding path program 1 times [2020-08-19 00:56:09,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:09,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152902722] [2020-08-19 00:56:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,540 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:56:09,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:56:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:56:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:56:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:56:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:56:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:56:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:56:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 00:56:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 00:56:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:56:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 00:56:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 00:56:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:56:09,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152902722] [2020-08-19 00:56:09,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:09,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 00:56:09,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558194380] [2020-08-19 00:56:09,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 00:56:09,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:09,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 00:56:09,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:56:09,844 INFO L87 Difference]: Start difference. First operand 1138 states and 1473 transitions. Second operand 14 states. [2020-08-19 00:56:10,817 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:56:11,334 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:56:12,578 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:56:12,918 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:56:13,254 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 00:56:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:15,447 INFO L93 Difference]: Finished difference Result 2530 states and 3598 transitions. [2020-08-19 00:56:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:56:15,448 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 127 [2020-08-19 00:56:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:15,458 INFO L225 Difference]: With dead ends: 2530 [2020-08-19 00:56:15,458 INFO L226 Difference]: Without dead ends: 1433 [2020-08-19 00:56:15,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:56:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-08-19 00:56:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1154. [2020-08-19 00:56:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2020-08-19 00:56:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1489 transitions. [2020-08-19 00:56:15,817 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1489 transitions. Word has length 127 [2020-08-19 00:56:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:15,818 INFO L479 AbstractCegarLoop]: Abstraction has 1154 states and 1489 transitions. [2020-08-19 00:56:15,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 00:56:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1489 transitions. [2020-08-19 00:56:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-19 00:56:15,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:15,824 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:15,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:56:15,824 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:15,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:15,825 INFO L82 PathProgramCache]: Analyzing trace with hash 265273488, now seen corresponding path program 1 times [2020-08-19 00:56:15,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:15,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216885267] [2020-08-19 00:56:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,160 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 00:56:16,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:56:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:56:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:56:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 00:56:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:56:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 00:56:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 00:56:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:56:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:56:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 00:56:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-19 00:56:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:56:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:56:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:56:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 00:56:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 00:56:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:56:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 00:56:16,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216885267] [2020-08-19 00:56:16,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:56:16,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:56:16,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746376449] [2020-08-19 00:56:16,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:56:16,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:56:16,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:56:16,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:56:16,469 INFO L87 Difference]: Start difference. First operand 1154 states and 1489 transitions. Second operand 9 states. [2020-08-19 00:56:17,028 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:56:17,745 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 00:56:22,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:56:22,009 INFO L93 Difference]: Finished difference Result 3666 states and 5227 transitions. [2020-08-19 00:56:22,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 00:56:22,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2020-08-19 00:56:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:56:22,030 INFO L225 Difference]: With dead ends: 3666 [2020-08-19 00:56:22,031 INFO L226 Difference]: Without dead ends: 2553 [2020-08-19 00:56:22,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-08-19 00:56:22,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2020-08-19 00:56:22,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2184. [2020-08-19 00:56:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2184 states. [2020-08-19 00:56:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 2871 transitions. [2020-08-19 00:56:22,603 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 2871 transitions. Word has length 127 [2020-08-19 00:56:22,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:56:22,603 INFO L479 AbstractCegarLoop]: Abstraction has 2184 states and 2871 transitions. [2020-08-19 00:56:22,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:56:22,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 2871 transitions. [2020-08-19 00:56:22,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-19 00:56:22,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:56:22,608 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:56:22,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:56:22,609 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:56:22,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:56:22,609 INFO L82 PathProgramCache]: Analyzing trace with hash 355592246, now seen corresponding path program 1 times [2020-08-19 00:56:22,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:56:22,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807696515] [2020-08-19 00:56:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:56:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:56:22,681 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:56:22,682 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:56:22,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:56:22,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:56:22 BoogieIcfgContainer [2020-08-19 00:56:22,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:56:22,739 INFO L168 Benchmark]: Toolchain (without parser) took 50643.99 ms. Allocated memory was 140.0 MB in the beginning and 801.6 MB in the end (delta: 661.7 MB). Free memory was 102.2 MB in the beginning and 588.1 MB in the end (delta: -485.9 MB). Peak memory consumption was 175.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:56:22,740 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-19 00:56:22,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.03 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 166.5 MB in the end (delta: -64.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:56:22,749 INFO L168 Benchmark]: Boogie Preprocessor took 93.94 ms. Allocated memory is still 202.9 MB. Free memory was 166.5 MB in the beginning and 161.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:56:22,751 INFO L168 Benchmark]: RCFGBuilder took 1375.56 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 161.6 MB in the beginning and 181.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:56:22,752 INFO L168 Benchmark]: TraceAbstraction took 48417.92 ms. Allocated memory was 237.0 MB in the beginning and 801.6 MB in the end (delta: 564.7 MB). Free memory was 181.5 MB in the beginning and 588.1 MB in the end (delta: -406.6 MB). Peak memory consumption was 158.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:56:22,762 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 750.03 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 166.5 MB in the end (delta: -64.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.94 ms. Allocated memory is still 202.9 MB. Free memory was 166.5 MB in the beginning and 161.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1375.56 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 161.6 MB in the beginning and 181.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48417.92 ms. Allocated memory was 237.0 MB in the beginning and 801.6 MB in the end (delta: 564.7 MB). Free memory was 181.5 MB in the beginning and 588.1 MB in the end (delta: -406.6 MB). Peak memory consumption was 158.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1021]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int __SELECTED_FEATURE_base ; [L41] int __SELECTED_FEATURE_highWaterSensor ; [L42] int __SELECTED_FEATURE_lowWaterSensor ; [L43] int __SELECTED_FEATURE_methaneQuery ; [L44] int __SELECTED_FEATURE_methaneAlarm ; [L45] int __SELECTED_FEATURE_stopCommand ; [L46] int __SELECTED_FEATURE_startCommand ; [L47] int __GUIDSL_ROOT_PRODUCTION ; [L140] int pumpRunning = 0; [L141] int systemActive = 1; [L641] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L914] int waterLevel = 1; [L915] int methaneLevelCritical = 0; [L1026] int cleanupTimeShifts = 4; [L1099] int retValue_acc ; [L1100] int tmp ; [L1104] CALL select_helpers() [L872] __GUIDSL_ROOT_PRODUCTION = 1 [L1104] RET select_helpers() [L1105] CALL select_features() [L857] __SELECTED_FEATURE_base = 1 [L858] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L858] RET, EXPR select_one() [L858] __SELECTED_FEATURE_highWaterSensor = select_one() [L859] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L859] RET, EXPR select_one() [L859] __SELECTED_FEATURE_lowWaterSensor = select_one() [L860] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L860] RET, EXPR select_one() [L860] __SELECTED_FEATURE_methaneQuery = select_one() [L861] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L861] RET, EXPR select_one() [L861] __SELECTED_FEATURE_methaneAlarm = select_one() [L862] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L862] RET, EXPR select_one() [L862] __SELECTED_FEATURE_stopCommand = select_one() [L863] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L863] RET, EXPR select_one() [L863] __SELECTED_FEATURE_startCommand = select_one() [L1105] RET select_features() [L1106] CALL, EXPR valid_product() [L877] int retValue_acc ; [L880] retValue_acc = __SELECTED_FEATURE_base [L881] return (retValue_acc); [L1106] RET, EXPR valid_product() [L1106] tmp = valid_product() [L1108] COND TRUE \read(tmp) [L1110] FCALL setup() [L1111] CALL runTest() [L1093] CALL test() [L55] int splverifierCounter ; [L56] int tmp ; [L57] int tmp___0 ; [L58] int tmp___1 ; [L59] int tmp___2 ; [L62] splverifierCounter = 0 [L64] COND TRUE 1 [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND TRUE \read(tmp) [L76] CALL waterRise() [L932] COND TRUE waterLevel < 2 [L933] waterLevel = waterLevel + 1 [L76] RET waterRise() [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___0) [L86] CALL changeMethaneLevel() [L944] COND FALSE !(\read(methaneLevelCritical)) [L947] methaneLevelCritical = 1 [L86] RET changeMethaneLevel() [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) [L95] COND FALSE !(\read(__SELECTED_FEATURE_startCommand)) [L119] CALL timeShift() [L148] COND FALSE !(\read(pumpRunning)) [L155] COND TRUE \read(systemActive) [L157] CALL processEnvironment() [L291] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) [L298] CALL processEnvironment__before__methaneAlarm() [L248] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) [L255] CALL processEnvironment__before__lowWaterSensor() [L205] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L207] CALL processEnvironment__role__highWaterSensor() [L177] int tmp ; [L180] COND TRUE ! pumpRunning [L182] CALL, EXPR isHighWaterLevel() [L411] int retValue_acc ; [L412] int tmp ; [L413] int tmp___0 ; [L417] CALL, EXPR isHighWaterSensorDry() [L994] int retValue_acc ; [L997] COND FALSE !(waterLevel < 2) [L1001] retValue_acc = 0 [L1002] return (retValue_acc); [L417] RET, EXPR isHighWaterSensorDry() [L417] tmp = isHighWaterSensorDry() [L419] COND FALSE !(\read(tmp)) [L422] tmp___0 = 1 [L424] retValue_acc = tmp___0 [L425] return (retValue_acc); [L182] RET, EXPR isHighWaterLevel() [L182] tmp = isHighWaterLevel() [L184] COND TRUE \read(tmp) [L186] CALL activatePump() [L333] COND FALSE !(\read(__SELECTED_FEATURE_methaneQuery)) [L340] CALL activatePump__before__methaneQuery() [L308] pumpRunning = 1 [L340] RET activatePump__before__methaneQuery() [L186] RET activatePump() [L207] RET processEnvironment__role__highWaterSensor() [L255] RET processEnvironment__before__lowWaterSensor() [L298] RET processEnvironment__before__methaneAlarm() [L157] RET processEnvironment() [L163] CALL __utac_acc__Specification1_spec__1() [L888] int tmp ; [L889] int tmp___0 ; [L893] CALL, EXPR isMethaneLevelCritical() [L953] int retValue_acc ; [L956] retValue_acc = methaneLevelCritical [L957] return (retValue_acc); [L893] RET, EXPR isMethaneLevelCritical() [L893] tmp = isMethaneLevelCritical() [L895] COND TRUE \read(tmp) [L897] CALL, EXPR isPumpRunning() [L366] int retValue_acc ; [L369] retValue_acc = pumpRunning [L370] return (retValue_acc); [L897] RET, EXPR isPumpRunning() [L897] tmp___0 = isPumpRunning() [L899] COND TRUE \read(tmp___0) [L901] CALL __automaton_fail() [L1021] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 298 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.3s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 40.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1344 SDtfs, 5375 SDslu, 915 SDs, 0 SdLazy, 9539 SolverSat, 4223 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 450 GetRequests, 295 SyntacticMatches, 6 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 12.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2184occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 1494 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 798 ConstructedInterpolants, 0 QuantifiedInterpolants, 315242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 360/360 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...