/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=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:43:32,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:43:32,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:43:32,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:43:32,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:43:32,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:43:32,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:43:32,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:43:32,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:43:32,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:43:32,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:43:32,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:43:32,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:43:32,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:43:32,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:43:32,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:43:32,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:43:32,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:43:32,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:43:32,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:43:32,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:43:32,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:43:32,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:43:32,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:43:32,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:43:32,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:43:32,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:43:32,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:43:32,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:43:32,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:43:32,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:43:32,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:43:32,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:43:32,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:43:32,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:43:32,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:43:32,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:43:32,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:43:32,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:43:32,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:43:32,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:43:32,773 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 [2020-08-18 17:43:32,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:43:32,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:43:32,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:43:32,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:43:32,801 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:43:32,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:43:32,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:43:32,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:43:32,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:43:32,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:43:32,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:43:32,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:43:32,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:43:32,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:43:32,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:43:32,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:43:32,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:43:32,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:43:32,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:43:32,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:43:32,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:43:32,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:43:32,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:43:32,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:43:32,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:43:32,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:43:32,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:43:32,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:43:32,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:43:32,808 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:43:33,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:43:33,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:43:33,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:43:33,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:43:33,162 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:43:33,163 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-08-18 17:43:33,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef2e89cba/9a7af1276d23401c919ac8ae3efd92a4/FLAG2200e380d [2020-08-18 17:43:33,705 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:43:33,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product47.cil.c [2020-08-18 17:43:33,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef2e89cba/9a7af1276d23401c919ac8ae3efd92a4/FLAG2200e380d [2020-08-18 17:43:34,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef2e89cba/9a7af1276d23401c919ac8ae3efd92a4 [2020-08-18 17:43:34,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:43:34,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:43:34,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:43:34,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:43:34,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:43:34,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:43:34" (1/1) ... [2020-08-18 17:43:34,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768b38ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:43:34, skipping insertion in model container [2020-08-18 17:43:34,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:43:34" (1/1) ... [2020-08-18 17:43:34,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:43:34,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:43:34,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:43:34,632 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:43:34,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:43:34,748 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:43:34,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:43:34 WrapperNode [2020-08-18 17:43:34,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:43:34,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:43:34,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:43:34,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:43:34,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:43:34" (1/1) ... [2020-08-18 17:43:34,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:43:34" (1/1) ... [2020-08-18 17:43:34,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:43:34" (1/1) ... [2020-08-18 17:43:34,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:43:34" (1/1) ... [2020-08-18 17:43:34,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:43:34" (1/1) ... [2020-08-18 17:43:34,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:43:34" (1/1) ... [2020-08-18 17:43:34,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:43:34" (1/1) ... [2020-08-18 17:43:34,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:43:34,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:43:34,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:43:34,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:43:34,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:43:34" (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 [2020-08-18 17:43:34,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:43:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:43:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 17:43:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 17:43:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 17:43:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 17:43:34,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 17:43:34,913 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 17:43:34,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:43:34,913 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 17:43:34,913 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 17:43:34,913 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 17:43:34,913 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 17:43:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 17:43:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 17:43:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 17:43:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 17:43:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 17:43:34,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 17:43:34,915 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 17:43:34,915 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 17:43:34,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 17:43:34,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 17:43:34,915 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 17:43:34,915 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 17:43:34,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 17:43:34,916 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 17:43:34,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 17:43:34,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 17:43:34,916 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 17:43:34,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 17:43:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 17:43:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 17:43:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 17:43:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 17:43:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 17:43:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 17:43:34,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 17:43:34,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 17:43:34,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 17:43:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:43:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:43:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 17:43:34,918 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 17:43:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 17:43:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 17:43:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 17:43:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 17:43:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 17:43:34,919 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 17:43:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 17:43:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 17:43:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 17:43:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 17:43:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 17:43:34,920 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 17:43:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:43:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 17:43:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 17:43:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:43:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:43:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 17:43:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:43:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:43:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:43:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:43:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 17:43:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:43:34,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 17:43:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 17:43:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:43:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 17:43:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 17:43:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:43:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 17:43:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 17:43:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 17:43:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 17:43:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 17:43:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 17:43:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 17:43:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 17:43:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 17:43:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 17:43:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 17:43:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 17:43:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 17:43:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 17:43:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 17:43:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 17:43:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 17:43:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:43:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:43:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:43:36,018 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:43:36,018 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 17:43:36,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:43:36 BoogieIcfgContainer [2020-08-18 17:43:36,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:43:36,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:43:36,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:43:36,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:43:36,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:43:34" (1/3) ... [2020-08-18 17:43:36,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189c388a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:43:36, skipping insertion in model container [2020-08-18 17:43:36,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:43:34" (2/3) ... [2020-08-18 17:43:36,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189c388a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:43:36, skipping insertion in model container [2020-08-18 17:43:36,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:43:36" (3/3) ... [2020-08-18 17:43:36,036 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2020-08-18 17:43:36,046 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:43:36,054 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:43:36,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:43:36,089 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:43:36,089 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:43:36,089 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:43:36,090 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:43:36,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:43:36,090 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:43:36,090 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:43:36,090 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:43:36,113 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-18 17:43:36,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 17:43:36,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:43:36,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:43:36,127 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:43:36,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:43:36,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1671120280, now seen corresponding path program 1 times [2020-08-18 17:43:36,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:43:36,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963600167] [2020-08-18 17:43:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:43:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:36,824 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:43:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:43:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:36,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:43:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:43:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:36,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:43:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:36,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:43:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:36,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:43:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:36,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:43:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:36,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:43:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:43:36,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963600167] [2020-08-18 17:43:36,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:43:36,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 17:43:36,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450823014] [2020-08-18 17:43:37,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 17:43:37,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:43:37,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 17:43:37,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:43:37,024 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 3 states. [2020-08-18 17:43:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:43:38,247 INFO L93 Difference]: Finished difference Result 329 states and 431 transitions. [2020-08-18 17:43:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 17:43:38,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 17:43:38,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:43:38,264 INFO L225 Difference]: With dead ends: 329 [2020-08-18 17:43:38,265 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 17:43:38,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:43:38,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 17:43:38,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 142. [2020-08-18 17:43:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-18 17:43:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 169 transitions. [2020-08-18 17:43:38,370 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 169 transitions. Word has length 52 [2020-08-18 17:43:38,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:43:38,370 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 169 transitions. [2020-08-18 17:43:38,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 17:43:38,371 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 169 transitions. [2020-08-18 17:43:38,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 17:43:38,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:43:38,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:43:38,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:43:38,376 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:43:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:43:38,376 INFO L82 PathProgramCache]: Analyzing trace with hash -374509178, now seen corresponding path program 1 times [2020-08-18 17:43:38,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:43:38,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655789258] [2020-08-18 17:43:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:43:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:38,686 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:43:38,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:43:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:38,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:43:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:38,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:43:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:38,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:43:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:38,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:43:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:38,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:43:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:38,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 17:43:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:38,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 17:43:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:43:38,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655789258] [2020-08-18 17:43:38,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:43:38,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:43:38,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020790640] [2020-08-18 17:43:38,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:43:38,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:43:38,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:43:38,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:43:38,735 INFO L87 Difference]: Start difference. First operand 142 states and 169 transitions. Second operand 4 states. [2020-08-18 17:43:39,139 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:43:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:43:40,043 INFO L93 Difference]: Finished difference Result 256 states and 314 transitions. [2020-08-18 17:43:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:43:40,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 17:43:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:43:40,049 INFO L225 Difference]: With dead ends: 256 [2020-08-18 17:43:40,049 INFO L226 Difference]: Without dead ends: 162 [2020-08-18 17:43:40,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:43:40,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-18 17:43:40,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2020-08-18 17:43:40,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 17:43:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-08-18 17:43:40,106 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 53 [2020-08-18 17:43:40,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:43:40,106 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-08-18 17:43:40,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:43:40,107 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-08-18 17:43:40,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 17:43:40,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:43:40,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:43:40,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:43:40,110 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:43:40,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:43:40,111 INFO L82 PathProgramCache]: Analyzing trace with hash 299348801, now seen corresponding path program 1 times [2020-08-18 17:43:40,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:43:40,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113418100] [2020-08-18 17:43:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:43:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:40,417 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:43:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:43:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:40,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:43:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:40,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:43:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:40,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:43:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:40,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:43:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:40,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:43:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:40,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:43:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:40,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:43:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:43:40,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113418100] [2020-08-18 17:43:40,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:43:40,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:43:40,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049021086] [2020-08-18 17:43:40,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:43:40,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:43:40,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:43:40,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:43:40,501 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 8 states. [2020-08-18 17:43:40,844 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:43:41,181 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:43:41,440 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:43:41,682 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:43:42,373 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:43:44,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:43:44,351 INFO L93 Difference]: Finished difference Result 461 states and 574 transitions. [2020-08-18 17:43:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 17:43:44,352 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 17:43:44,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:43:44,358 INFO L225 Difference]: With dead ends: 461 [2020-08-18 17:43:44,358 INFO L226 Difference]: Without dead ends: 352 [2020-08-18 17:43:44,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 17:43:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-08-18 17:43:44,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 290. [2020-08-18 17:43:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-18 17:43:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 353 transitions. [2020-08-18 17:43:44,441 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 353 transitions. Word has length 57 [2020-08-18 17:43:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:43:44,441 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 353 transitions. [2020-08-18 17:43:44,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:43:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 353 transitions. [2020-08-18 17:43:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 17:43:44,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:43:44,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:43:44,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:43:44,445 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:43:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:43:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1748947784, now seen corresponding path program 1 times [2020-08-18 17:43:44,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:43:44,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807940484] [2020-08-18 17:43:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:43:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:44,758 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:43:44,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:43:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:44,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:43:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:44,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:43:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:44,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:43:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:44,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:43:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:44,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:43:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:44,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:43:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:44,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:43:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:44,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 17:43:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:43:44,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807940484] [2020-08-18 17:43:44,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:43:44,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 17:43:44,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919082009] [2020-08-18 17:43:44,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 17:43:44,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:43:44,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 17:43:44,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 17:43:44,858 INFO L87 Difference]: Start difference. First operand 290 states and 353 transitions. Second operand 8 states. [2020-08-18 17:43:45,236 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:43:46,568 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:43:46,910 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:43:47,174 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:43:47,451 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:43:48,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:43:48,332 INFO L93 Difference]: Finished difference Result 898 states and 1181 transitions. [2020-08-18 17:43:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 17:43:48,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 17:43:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:43:48,344 INFO L225 Difference]: With dead ends: 898 [2020-08-18 17:43:48,344 INFO L226 Difference]: Without dead ends: 632 [2020-08-18 17:43:48,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:43:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-08-18 17:43:48,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 561. [2020-08-18 17:43:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-08-18 17:43:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 695 transitions. [2020-08-18 17:43:48,494 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 695 transitions. Word has length 63 [2020-08-18 17:43:48,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:43:48,495 INFO L479 AbstractCegarLoop]: Abstraction has 561 states and 695 transitions. [2020-08-18 17:43:48,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 17:43:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 695 transitions. [2020-08-18 17:43:48,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 17:43:48,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:43:48,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:43:48,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:43:48,500 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:43:48,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:43:48,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1730478350, now seen corresponding path program 1 times [2020-08-18 17:43:48,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:43:48,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983722041] [2020-08-18 17:43:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:43:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:48,791 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:43:48,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:43:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:43:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:43:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:43:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:48,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:43:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:48,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:43:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:48,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:43:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:43:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 17:43:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:48,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 17:43:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:43:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:43:48,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983722041] [2020-08-18 17:43:48,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:43:48,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:43:48,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987894396] [2020-08-18 17:43:48,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:43:48,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:43:48,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:43:48,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:43:48,923 INFO L87 Difference]: Start difference. First operand 561 states and 695 transitions. Second operand 6 states. [2020-08-18 17:43:49,233 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:43:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:43:50,946 INFO L93 Difference]: Finished difference Result 1358 states and 1768 transitions. [2020-08-18 17:43:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 17:43:50,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-18 17:43:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:43:50,953 INFO L225 Difference]: With dead ends: 1358 [2020-08-18 17:43:50,953 INFO L226 Difference]: Without dead ends: 821 [2020-08-18 17:43:50,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:43:50,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2020-08-18 17:43:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 751. [2020-08-18 17:43:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2020-08-18 17:43:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 914 transitions. [2020-08-18 17:43:51,109 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 914 transitions. Word has length 67 [2020-08-18 17:43:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:43:51,110 INFO L479 AbstractCegarLoop]: Abstraction has 751 states and 914 transitions. [2020-08-18 17:43:51,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:43:51,110 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 914 transitions. [2020-08-18 17:43:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 17:43:51,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:43:51,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:43:51,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:43:51,112 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:43:51,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:43:51,113 INFO L82 PathProgramCache]: Analyzing trace with hash -145060242, now seen corresponding path program 1 times [2020-08-18 17:43:51,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:43:51,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428845074] [2020-08-18 17:43:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:43:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:43:51,172 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:43:51,173 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:43:51,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:43:51,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:43:51 BoogieIcfgContainer [2020-08-18 17:43:51,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:43:51,202 INFO L168 Benchmark]: Toolchain (without parser) took 17135.83 ms. Allocated memory was 145.8 MB in the beginning and 513.3 MB in the end (delta: 367.5 MB). Free memory was 101.0 MB in the beginning and 148.8 MB in the end (delta: -47.8 MB). Peak memory consumption was 319.7 MB. Max. memory is 7.1 GB. [2020-08-18 17:43:51,205 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 17:43:51,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.39 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.8 MB in the beginning and 168.8 MB in the end (delta: -68.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:43:51,211 INFO L168 Benchmark]: Boogie Preprocessor took 92.35 ms. Allocated memory is still 201.9 MB. Free memory was 168.8 MB in the beginning and 164.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 17:43:51,212 INFO L168 Benchmark]: RCFGBuilder took 1184.96 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 164.7 MB in the beginning and 193.3 MB in the end (delta: -28.7 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-08-18 17:43:51,212 INFO L168 Benchmark]: TraceAbstraction took 15171.50 ms. Allocated memory was 234.4 MB in the beginning and 513.3 MB in the end (delta: 278.9 MB). Free memory was 191.9 MB in the beginning and 148.8 MB in the end (delta: 43.1 MB). Peak memory consumption was 322.0 MB. Max. memory is 7.1 GB. [2020-08-18 17:43:51,223 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 682.39 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.8 MB in the beginning and 168.8 MB in the end (delta: -68.1 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.35 ms. Allocated memory is still 201.9 MB. Free memory was 168.8 MB in the beginning and 164.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1184.96 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 164.7 MB in the beginning and 193.3 MB in the end (delta: -28.7 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15171.50 ms. Allocated memory was 234.4 MB in the beginning and 513.3 MB in the end (delta: 278.9 MB). Free memory was 191.9 MB in the beginning and 148.8 MB in the end (delta: 43.1 MB). Peak memory consumption was 322.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int cleanupTimeShifts = 4; [L357] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L629] int pumpRunning = 0; [L630] int systemActive = 1; [L841] int waterLevel = 1; [L842] int methaneLevelCritical = 0; [L130] int retValue_acc ; [L131] int tmp ; [L135] FCALL select_helpers() [L136] FCALL select_features() [L137] CALL, EXPR valid_product() [L179] int retValue_acc ; [L182] retValue_acc = 1 [L183] return (retValue_acc); [L137] RET, EXPR valid_product() [L137] tmp = valid_product() [L139] COND TRUE \read(tmp) [L141] FCALL setup() [L142] CALL runTest() [L121] CALL test() [L556] int splverifierCounter ; [L557] int tmp ; [L558] int tmp___0 ; [L559] int tmp___1 ; [L560] int tmp___2 ; [L563] splverifierCounter = 0 [L565] COND TRUE 1 [L567] COND TRUE splverifierCounter < 4 [L573] tmp = __VERIFIER_nondet_int() [L575] COND TRUE \read(tmp) [L577] CALL waterRise() [L859] COND TRUE waterLevel < 2 [L860] waterLevel = waterLevel + 1 [L577] RET waterRise() [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND FALSE !(\read(tmp___2)) [L599] tmp___1 = __VERIFIER_nondet_int() [L601] COND TRUE \read(tmp___1) [L603] CALL stopSystem() [L828] COND FALSE !(\read(pumpRunning)) [L835] systemActive = 0 [L603] RET stopSystem() [L610] CALL timeShift() [L637] COND FALSE !(\read(pumpRunning)) [L644] COND FALSE !(\read(systemActive)) [L652] CALL __utac_acc__Specification3_spec__1() [L936] int tmp ; [L937] int tmp___0 ; [L938] int tmp___1 ; [L942] CALL, EXPR isMethaneLevelCritical() [L880] int retValue_acc ; [L883] retValue_acc = methaneLevelCritical [L884] return (retValue_acc); [L942] RET, EXPR isMethaneLevelCritical() [L942] tmp = isMethaneLevelCritical() [L944] COND FALSE !(\read(tmp)) [L948] CALL, EXPR getWaterLevel() [L912] int retValue_acc ; [L915] retValue_acc = waterLevel [L916] return (retValue_acc); [L948] RET, EXPR getWaterLevel() [L948] tmp___0 = getWaterLevel() [L950] COND TRUE tmp___0 == 2 [L952] CALL, EXPR isPumpRunning() [L761] int retValue_acc ; [L764] retValue_acc = pumpRunning [L765] return (retValue_acc); [L952] RET, EXPR isPumpRunning() [L952] tmp___1 = isPumpRunning() [L954] COND FALSE !(\read(tmp___1)) [L958] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 241 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 655 SDtfs, 1066 SDslu, 449 SDs, 0 SdLazy, 2485 SolverSat, 663 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=751occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 268 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...