/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:49:29,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:49:29,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:49:29,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:49:29,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:49:29,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:49:29,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:49:29,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:49:29,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:49:29,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:49:29,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:49:29,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:49:29,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:49:29,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:49:29,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:49:29,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:49:29,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:49:29,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:49:29,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:49:29,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:49:29,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:49:29,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:49:29,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:49:29,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:49:29,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:49:29,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:49:29,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:49:29,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:49:29,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:49:29,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:49:29,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:49:29,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:49:29,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:49:29,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:49:29,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:49:29,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:49:29,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:49:29,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:49:29,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:49:29,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:49:29,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:49:29,770 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 05:49:29,793 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:49:29,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:49:29,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:49:29,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:49:29,795 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:49:29,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:49:29,795 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:49:29,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:49:29,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:49:29,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:49:29,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:49:29,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:49:29,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:49:29,797 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:49:29,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:49:29,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:49:29,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:49:29,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:49:29,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:49:29,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:49:29,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:49:29,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:49:29,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:49:29,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:49:29,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:49:29,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:49:29,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:49:29,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:49:29,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:49:29,800 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=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:49:30,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:49:30,113 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:49:30,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:49:30,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:49:30,119 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:49:30,120 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-19 05:49:30,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00a325899/934cb0f961ff4dc2ae23fa01c0cf2972/FLAGaade12c64 [2020-08-19 05:49:30,759 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:49:30,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-19 05:49:30,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00a325899/934cb0f961ff4dc2ae23fa01c0cf2972/FLAGaade12c64 [2020-08-19 05:49:31,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00a325899/934cb0f961ff4dc2ae23fa01c0cf2972 [2020-08-19 05:49:31,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:49:31,056 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:49:31,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:49:31,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:49:31,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:49:31,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:49:31" (1/1) ... [2020-08-19 05:49:31,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:31, skipping insertion in model container [2020-08-19 05:49:31,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:49:31" (1/1) ... [2020-08-19 05:49:31,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:49:31,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:49:31,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:49:31,572 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:49:31,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:49:31,716 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:49:31,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:31 WrapperNode [2020-08-19 05:49:31,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:49:31,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:49:31,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:49:31,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:49:31,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:31" (1/1) ... [2020-08-19 05:49:31,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:31" (1/1) ... [2020-08-19 05:49:31,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:31" (1/1) ... [2020-08-19 05:49:31,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:31" (1/1) ... [2020-08-19 05:49:31,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:31" (1/1) ... [2020-08-19 05:49:31,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:31" (1/1) ... [2020-08-19 05:49:31,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:31" (1/1) ... [2020-08-19 05:49:31,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:49:31,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:49:31,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:49:31,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:49:31,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:31" (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 05:49:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:49:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:49:31,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:49:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:49:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:49:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:49:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:49:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:49:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:49:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:49:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:49:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:49:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:49:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:49:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:49:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:49:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 05:49:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:49:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:49:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:49:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:49:31,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:49:31,921 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:49:31,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:49:31,921 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:49:31,922 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:49:31,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:49:31,922 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:49:31,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:49:31,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:49:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:49:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:49:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:49:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:49:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:49:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:49:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:49:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:49:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:49:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:49:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:49:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:49:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:49:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:49:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:49:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:49:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:49:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:49:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:49:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:49:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:49:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:49:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 05:49:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:49:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:49:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:49:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:49:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:49:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:49:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:49:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:49:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:49:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:49:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:49:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:49:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:49:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:49:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:49:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:49:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:49:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:49:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:49:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:49:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:49:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:49:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:49:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:49:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:49:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:49:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:49:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:49:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:49:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:49:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:49:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:49:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:49:33,014 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:49:33,014 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:49:33,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:49:33 BoogieIcfgContainer [2020-08-19 05:49:33,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:49:33,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:49:33,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:49:33,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:49:33,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:49:31" (1/3) ... [2020-08-19 05:49:33,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579a7372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:49:33, skipping insertion in model container [2020-08-19 05:49:33,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:31" (2/3) ... [2020-08-19 05:49:33,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579a7372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:49:33, skipping insertion in model container [2020-08-19 05:49:33,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:49:33" (3/3) ... [2020-08-19 05:49:33,029 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product06.cil.c [2020-08-19 05:49:33,040 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:49:33,049 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:49:33,063 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:49:33,090 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:49:33,090 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:49:33,090 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:49:33,090 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:49:33,091 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:49:33,091 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:49:33,091 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:49:33,091 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:49:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-08-19 05:49:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:49:33,128 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:33,129 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] [2020-08-19 05:49:33,129 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:33,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1057158692, now seen corresponding path program 1 times [2020-08-19 05:49:33,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:33,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960678949] [2020-08-19 05:49:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:33,822 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:49:33,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:33,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:33,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:33,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:33,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:33,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:49:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:33,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:49:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:49:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:33,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960678949] [2020-08-19 05:49:33,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:33,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:49:33,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636898446] [2020-08-19 05:49:33,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:49:33,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:33,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:49:33,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:49:33,941 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-08-19 05:49:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:34,986 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-19 05:49:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:49:34,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 05:49:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:35,004 INFO L225 Difference]: With dead ends: 258 [2020-08-19 05:49:35,004 INFO L226 Difference]: Without dead ends: 140 [2020-08-19 05:49:35,010 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 [2020-08-19 05:49:35,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-19 05:49:35,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-19 05:49:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-19 05:49:35,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-19 05:49:35,091 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 52 [2020-08-19 05:49:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:35,092 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-19 05:49:35,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:49:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-19 05:49:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 05:49:35,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:35,096 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] [2020-08-19 05:49:35,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:49:35,097 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:35,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:35,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1710283751, now seen corresponding path program 1 times [2020-08-19 05:49:35,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:35,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395799875] [2020-08-19 05:49:35,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:35,421 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:49:35,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:35,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:35,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:35,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:35,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:49:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:35,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:49:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:35,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:49:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:35,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395799875] [2020-08-19 05:49:35,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:35,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:49:35,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382887118] [2020-08-19 05:49:35,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:49:35,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:35,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:49:35,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:49:35,489 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-19 05:49:35,925 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:36,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:36,536 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-19 05:49:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:49:36,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 05:49:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:36,540 INFO L225 Difference]: With dead ends: 187 [2020-08-19 05:49:36,540 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 05:49:36,542 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 [2020-08-19 05:49:36,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 05:49:36,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-19 05:49:36,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-19 05:49:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-19 05:49:36,579 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 53 [2020-08-19 05:49:36,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:36,579 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-19 05:49:36,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:49:36,579 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-19 05:49:36,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 05:49:36,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:36,582 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] [2020-08-19 05:49:36,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:49:36,582 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:36,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:36,583 INFO L82 PathProgramCache]: Analyzing trace with hash -830709307, now seen corresponding path program 1 times [2020-08-19 05:49:36,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:36,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179033176] [2020-08-19 05:49:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,906 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:49:36,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:49:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:49:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 05:49:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:36,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179033176] [2020-08-19 05:49:36,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:36,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:49:36,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813362905] [2020-08-19 05:49:36,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:49:36,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:36,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:49:36,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:49:36,995 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-19 05:49:37,365 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:49:37,661 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:49:37,898 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:49:38,170 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:49:39,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:39,098 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-19 05:49:39,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:49:39,101 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 05:49:39,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:39,104 INFO L225 Difference]: With dead ends: 200 [2020-08-19 05:49:39,104 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 05:49:39,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:49:39,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 05:49:39,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-19 05:49:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-19 05:49:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-19 05:49:39,138 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 58 [2020-08-19 05:49:39,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:39,138 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-19 05:49:39,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:49:39,138 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-19 05:49:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 05:49:39,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:39,141 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] [2020-08-19 05:49:39,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:49:39,141 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:39,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1834721556, now seen corresponding path program 1 times [2020-08-19 05:49:39,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:39,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671412173] [2020-08-19 05:49:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:39,500 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:49:39,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:39,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:39,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:39,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:39,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:39,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:49:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:39,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:39,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 05:49:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:39,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 05:49:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 05:49:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:39,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671412173] [2020-08-19 05:49:39,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:39,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:49:39,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832299131] [2020-08-19 05:49:39,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:49:39,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:39,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:49:39,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:49:39,618 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 8 states. [2020-08-19 05:49:39,949 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:49:41,266 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:49:41,587 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:49:41,812 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:49:42,169 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:49:42,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:42,480 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2020-08-19 05:49:42,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:49:42,481 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-08-19 05:49:42,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:42,485 INFO L225 Difference]: With dead ends: 299 [2020-08-19 05:49:42,486 INFO L226 Difference]: Without dead ends: 223 [2020-08-19 05:49:42,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:49:42,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-08-19 05:49:42,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174. [2020-08-19 05:49:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-19 05:49:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2020-08-19 05:49:42,538 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 66 [2020-08-19 05:49:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:42,539 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2020-08-19 05:49:42,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:49:42,539 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2020-08-19 05:49:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 05:49:42,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:42,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:42,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:49:42,542 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:42,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1027907532, now seen corresponding path program 1 times [2020-08-19 05:49:42,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:42,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407397681] [2020-08-19 05:49:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,831 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:49:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:49:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:49:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:49:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:49:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 05:49:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 05:49:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:42,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407397681] [2020-08-19 05:49:42,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:42,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:49:42,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193178972] [2020-08-19 05:49:42,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:49:42,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:42,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:49:42,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:49:42,941 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states. [2020-08-19 05:49:43,310 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:49:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:43,884 INFO L93 Difference]: Finished difference Result 296 states and 363 transitions. [2020-08-19 05:49:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:49:43,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-08-19 05:49:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:43,887 INFO L225 Difference]: With dead ends: 296 [2020-08-19 05:49:43,888 INFO L226 Difference]: Without dead ends: 146 [2020-08-19 05:49:43,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:49:43,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-19 05:49:43,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2020-08-19 05:49:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-19 05:49:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2020-08-19 05:49:43,926 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 74 [2020-08-19 05:49:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:43,927 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2020-08-19 05:49:43,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:49:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2020-08-19 05:49:43,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 05:49:43,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:43,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:43,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:49:43,929 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:43,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1882239654, now seen corresponding path program 1 times [2020-08-19 05:49:43,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:43,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018734189] [2020-08-19 05:49:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:49:43,992 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:49:43,993 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:49:43,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:49:44,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:49:44 BoogieIcfgContainer [2020-08-19 05:49:44,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:49:44,022 INFO L168 Benchmark]: Toolchain (without parser) took 12965.58 ms. Allocated memory was 139.5 MB in the beginning and 422.1 MB in the end (delta: 282.6 MB). Free memory was 101.3 MB in the beginning and 147.4 MB in the end (delta: -46.1 MB). Peak memory consumption was 236.5 MB. Max. memory is 7.1 GB. [2020-08-19 05:49:44,023 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:49:44,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.13 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.1 MB in the beginning and 168.3 MB in the end (delta: -67.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-19 05:49:44,025 INFO L168 Benchmark]: Boogie Preprocessor took 109.10 ms. Allocated memory is still 201.3 MB. Free memory was 168.3 MB in the beginning and 164.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-19 05:49:44,025 INFO L168 Benchmark]: RCFGBuilder took 1191.54 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 164.2 MB in the beginning and 198.5 MB in the end (delta: -34.4 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:49:44,026 INFO L168 Benchmark]: TraceAbstraction took 10999.14 ms. Allocated memory was 234.9 MB in the beginning and 422.1 MB in the end (delta: 187.2 MB). Free memory was 197.1 MB in the beginning and 147.4 MB in the end (delta: 49.7 MB). Peak memory consumption was 236.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:49:44,030 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.13 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.1 MB in the beginning and 168.3 MB in the end (delta: -67.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.10 ms. Allocated memory is still 201.3 MB. Free memory was 168.3 MB in the beginning and 164.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1191.54 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 164.2 MB in the beginning and 198.5 MB in the end (delta: -34.4 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10999.14 ms. Allocated memory was 234.9 MB in the beginning and 422.1 MB in the end (delta: 187.2 MB). Free memory was 197.1 MB in the beginning and 147.4 MB in the end (delta: 49.7 MB). Peak memory consumption was 236.9 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: [L96] int pumpRunning = 0; [L97] int systemActive = 1; [L309] int waterLevel = 1; [L310] int methaneLevelCritical = 0; [L389] int cleanupTimeShifts = 4; [L654] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L462] int retValue_acc ; [L463] int tmp ; [L467] FCALL select_helpers() [L468] FCALL select_features() [L469] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L469] RET, EXPR valid_product() [L469] tmp = valid_product() [L471] COND TRUE \read(tmp) [L473] FCALL setup() [L474] CALL runTest() [L456] CALL test() [L242] int splverifierCounter ; [L243] int tmp ; [L244] int tmp___0 ; [L245] int tmp___1 ; [L246] int tmp___2 ; [L249] splverifierCounter = 0 [L251] COND TRUE 1 [L253] COND TRUE splverifierCounter < 4 [L259] tmp = __VERIFIER_nondet_int() [L261] COND TRUE \read(tmp) [L263] CALL waterRise() [L327] COND TRUE waterLevel < 2 [L328] waterLevel = waterLevel + 1 [L263] RET waterRise() [L269] tmp___0 = __VERIFIER_nondet_int() [L271] COND FALSE !(\read(tmp___0)) [L279] tmp___2 = __VERIFIER_nondet_int() [L281] COND FALSE !(\read(tmp___2)) [L287] tmp___1 = __VERIFIER_nondet_int() [L289] COND TRUE \read(tmp___1) [L296] CALL timeShift() [L104] COND FALSE !(\read(pumpRunning)) [L111] COND TRUE \read(systemActive) [L113] CALL processEnvironment() [L133] int tmp ; [L136] COND FALSE !(\read(pumpRunning)) [L151] FCALL processEnvironment__wrappee__base() [L113] RET processEnvironment() [L119] CALL __utac_acc__Specification3_spec__1() [L852] int tmp ; [L853] int tmp___0 ; [L854] int tmp___1 ; [L858] CALL, EXPR isMethaneLevelCritical() [L348] int retValue_acc ; [L351] retValue_acc = methaneLevelCritical [L352] return (retValue_acc); [L858] RET, EXPR isMethaneLevelCritical() [L858] tmp = isMethaneLevelCritical() [L860] COND FALSE !(\read(tmp)) [L864] CALL, EXPR getWaterLevel() [L380] int retValue_acc ; [L383] retValue_acc = waterLevel [L384] return (retValue_acc); [L864] RET, EXPR getWaterLevel() [L864] tmp___0 = getWaterLevel() [L866] COND TRUE tmp___0 == 2 [L868] CALL, EXPR isPumpRunning() [L185] int retValue_acc ; [L188] retValue_acc = pumpRunning [L189] return (retValue_acc); [L868] RET, EXPR isPumpRunning() [L868] tmp___1 = isPumpRunning() [L870] COND FALSE !(\read(tmp___1)) [L874] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 446 SDtfs, 658 SDslu, 247 SDs, 0 SdLazy, 1341 SolverSat, 451 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 373 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 298 ConstructedInterpolants, 0 QuantifiedInterpolants, 85738 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...