/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:42:41,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:42:41,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:42:41,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:42:41,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:42:41,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:42:41,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:42:41,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:42:41,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:42:41,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:42:41,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:42:41,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:42:41,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:42:41,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:42:41,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:42:41,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:42:41,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:42:41,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:42:41,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:42:41,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:42:41,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:42:41,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:42:41,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:42:41,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:42:41,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:42:41,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:42:41,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:42:41,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:42:41,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:42:41,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:42:41,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:42:41,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:42:41,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:42:41,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:42:41,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:42:41,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:42:41,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:42:41,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:42:41,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:42:41,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:42:41,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:42:41,799 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 [2020-08-21 18:42:41,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:42:41,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:42:41,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:42:41,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:42:41,854 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:42:41,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:42:41,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:42:41,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:42:41,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:42:41,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:42:41,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:42:41,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:42:41,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:42:41,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:42:41,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:42:41,859 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:42:41,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:42:41,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:42:41,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:42:41,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:42:41,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:42:41,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:42:41,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:42:41,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:42:41,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:42:41,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:42:41,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:42:41,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:42:41,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:42:41,864 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=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:42:42,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:42:42,195 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:42:42,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:42:42,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:42:42,200 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:42:42,201 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-21 18:42:42,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c665e2e78/65a62afc45464027817b4ccf1587316b/FLAGe2ed6bf8e [2020-08-21 18:42:42,801 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:42:42,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-21 18:42:42,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c665e2e78/65a62afc45464027817b4ccf1587316b/FLAGe2ed6bf8e [2020-08-21 18:42:43,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c665e2e78/65a62afc45464027817b4ccf1587316b [2020-08-21 18:42:43,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:42:43,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:42:43,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:42:43,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:42:43,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:42:43,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:42:43" (1/1) ... [2020-08-21 18:42:43,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:42:43, skipping insertion in model container [2020-08-21 18:42:43,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:42:43" (1/1) ... [2020-08-21 18:42:43,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:42:43,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:42:43,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:42:43,620 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:42:43,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:42:43,743 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:42:43,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:42:43 WrapperNode [2020-08-21 18:42:43,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:42:43,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:42:43,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:42:43,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:42:43,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:42:43" (1/1) ... [2020-08-21 18:42:43,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:42:43" (1/1) ... [2020-08-21 18:42:43,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:42:43" (1/1) ... [2020-08-21 18:42:43,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:42:43" (1/1) ... [2020-08-21 18:42:43,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:42:43" (1/1) ... [2020-08-21 18:42:43,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:42:43" (1/1) ... [2020-08-21 18:42:43,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:42:43" (1/1) ... [2020-08-21 18:42:43,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:42:43,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:42:43,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:42:43,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:42:43,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:42:43" (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 [2020-08-21 18:42:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:42:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:42:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:42:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:42:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:42:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:42:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:42:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:42:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:42:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:42:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:42:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:42:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:42:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:42:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:42:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:42:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:42:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:42:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:42:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:42:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:42:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:42:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:42:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:42:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:42:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:42:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:42:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:42:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:42:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:42:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:42:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:42:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 18:42:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 18:42:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:42:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:42:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:42:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:42:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:42:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:42:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:42:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:42:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:42:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:42:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:42:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:42:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:42:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:42:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:42:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:42:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:42:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:42:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:42:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:42:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:42:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:42:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:42:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:42:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:42:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:42:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:42:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:42:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:42:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:42:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:42:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:42:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:42:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:42:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:42:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:42:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:42:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:42:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:42:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:42:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:42:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:42:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:42:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 18:42:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:42:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:42:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:42:43,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 18:42:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:42:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:42:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:42:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:42:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:42:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:42:43,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:42:43,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:42:45,003 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:42:45,003 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:42:45,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:42:45 BoogieIcfgContainer [2020-08-21 18:42:45,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:42:45,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:42:45,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:42:45,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:42:45,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:42:43" (1/3) ... [2020-08-21 18:42:45,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3c8ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:42:45, skipping insertion in model container [2020-08-21 18:42:45,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:42:43" (2/3) ... [2020-08-21 18:42:45,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3c8ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:42:45, skipping insertion in model container [2020-08-21 18:42:45,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:42:45" (3/3) ... [2020-08-21 18:42:45,023 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-08-21 18:42:45,031 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:42:45,038 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:42:45,052 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:42:45,078 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:42:45,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:42:45,079 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:42:45,079 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:42:45,079 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:42:45,079 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:42:45,080 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:42:45,080 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:42:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-08-21 18:42:45,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 18:42:45,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:42:45,116 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] [2020-08-21 18:42:45,116 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:42:45,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:42:45,123 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-08-21 18:42:45,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:42:45,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451880365] [2020-08-21 18:42:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:42:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:45,757 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:42:45,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:42:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:45,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:42:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:45,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:42:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:45,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:42:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:45,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:42:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:45,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:42:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:45,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:42:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:42:45,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451880365] [2020-08-21 18:42:45,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:42:45,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 18:42:45,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853338877] [2020-08-21 18:42:45,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 18:42:45,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:42:45,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 18:42:45,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:42:45,887 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-08-21 18:42:46,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:42:46,946 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-21 18:42:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 18:42:46,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 18:42:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:42:46,964 INFO L225 Difference]: With dead ends: 258 [2020-08-21 18:42:46,965 INFO L226 Difference]: Without dead ends: 140 [2020-08-21 18:42:46,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 18:42:46,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-21 18:42:47,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-21 18:42:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-21 18:42:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-21 18:42:47,060 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-21 18:42:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:42:47,061 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-21 18:42:47,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 18:42:47,061 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-21 18:42:47,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 18:42:47,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:42:47,065 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] [2020-08-21 18:42:47,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:42:47,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:42:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:42:47,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-08-21 18:42:47,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:42:47,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320177104] [2020-08-21 18:42:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:42:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:47,391 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:42:47,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:42:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:47,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:42:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:47,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:42:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:47,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:42:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:47,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:42:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:47,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 18:42:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:47,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:42:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:42:47,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320177104] [2020-08-21 18:42:47,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:42:47,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:42:47,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851620290] [2020-08-21 18:42:47,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:42:47,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:42:47,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:42:47,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:42:47,446 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-21 18:42:47,896 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:42:48,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:42:48,559 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-21 18:42:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 18:42:48,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 18:42:48,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:42:48,563 INFO L225 Difference]: With dead ends: 187 [2020-08-21 18:42:48,564 INFO L226 Difference]: Without dead ends: 124 [2020-08-21 18:42:48,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:42:48,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-21 18:42:48,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-21 18:42:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-21 18:42:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-21 18:42:48,607 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-21 18:42:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:42:48,607 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-21 18:42:48,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:42:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-21 18:42:48,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 18:42:48,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:42:48,619 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] [2020-08-21 18:42:48,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:42:48,620 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:42:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:42:48,621 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-08-21 18:42:48,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:42:48,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837510952] [2020-08-21 18:42:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:42:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:48,977 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:42:48,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:42:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:42:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:49,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:42:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:49,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:42:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:49,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:42:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:49,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:42:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:49,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:42:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:42:49,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837510952] [2020-08-21 18:42:49,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:42:49,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:42:49,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540830252] [2020-08-21 18:42:49,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:42:49,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:42:49,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:42:49,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:42:49,108 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-21 18:42:49,504 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:42:49,818 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:42:50,080 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:42:50,336 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:42:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:42:51,335 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-21 18:42:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:42:51,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 18:42:51,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:42:51,339 INFO L225 Difference]: With dead ends: 200 [2020-08-21 18:42:51,339 INFO L226 Difference]: Without dead ends: 124 [2020-08-21 18:42:51,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:42:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-21 18:42:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-21 18:42:51,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-21 18:42:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-21 18:42:51,375 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-21 18:42:51,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:42:51,376 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-21 18:42:51,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:42:51,376 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-21 18:42:51,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 18:42:51,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:42:51,377 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] [2020-08-21 18:42:51,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:42:51,378 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:42:51,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:42:51,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-08-21 18:42:51,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:42:51,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570790120] [2020-08-21 18:42:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:42:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:51,666 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:42:51,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:42:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:51,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:42:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:42:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:51,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:42:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:42:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:51,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 18:42:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:51,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:42:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 18:42:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:51,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 18:42:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:42:51,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570790120] [2020-08-21 18:42:51,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:42:51,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:42:51,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995084493] [2020-08-21 18:42:51,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:42:51,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:42:51,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:42:51,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:42:51,795 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-21 18:42:52,134 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:42:53,256 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:42:53,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:42:53,718 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-21 18:42:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:42:53,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-21 18:42:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:42:53,723 INFO L225 Difference]: With dead ends: 288 [2020-08-21 18:42:53,723 INFO L226 Difference]: Without dead ends: 212 [2020-08-21 18:42:53,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:42:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-21 18:42:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-21 18:42:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-21 18:42:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-21 18:42:53,763 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-21 18:42:53,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:42:53,763 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-21 18:42:53,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:42:53,763 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-21 18:42:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 18:42:53,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:42:53,765 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] [2020-08-21 18:42:53,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:42:53,765 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:42:53,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:42:53,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-08-21 18:42:53,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:42:53,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566194226] [2020-08-21 18:42:53,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:42:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,064 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:42:54,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:42:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:42:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:42:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:42:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:42:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 18:42:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:42:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:42:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:42:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 18:42:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 18:42:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:42:54,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566194226] [2020-08-21 18:42:54,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:42:54,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:42:54,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967948630] [2020-08-21 18:42:54,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:42:54,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:42:54,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:42:54,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:42:54,192 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-08-21 18:42:54,527 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:42:55,616 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:42:55,876 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:42:56,119 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:42:56,353 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:42:56,639 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:42:57,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:42:57,285 INFO L93 Difference]: Finished difference Result 505 states and 630 transitions. [2020-08-21 18:42:57,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:42:57,286 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-21 18:42:57,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:42:57,292 INFO L225 Difference]: With dead ends: 505 [2020-08-21 18:42:57,292 INFO L226 Difference]: Without dead ends: 360 [2020-08-21 18:42:57,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:42:57,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-21 18:42:57,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 293. [2020-08-21 18:42:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-21 18:42:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-08-21 18:42:57,371 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 74 [2020-08-21 18:42:57,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:42:57,372 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-08-21 18:42:57,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:42:57,372 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-08-21 18:42:57,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 18:42:57,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:42:57,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:42:57,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:42:57,374 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:42:57,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:42:57,375 INFO L82 PathProgramCache]: Analyzing trace with hash -133122882, now seen corresponding path program 1 times [2020-08-21 18:42:57,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:42:57,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233841115] [2020-08-21 18:42:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:42:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,644 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:42:57,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:42:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:42:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:42:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:42:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:42:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:42:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:42:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:42:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:42:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:42:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 18:42:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 18:42:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:42:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:42:57,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233841115] [2020-08-21 18:42:57,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:42:57,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:42:57,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492416411] [2020-08-21 18:42:57,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:42:57,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:42:57,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:42:57,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:42:57,761 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 9 states. [2020-08-21 18:42:58,119 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:42:59,149 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:42:59,360 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:42:59,616 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:42:59,854 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:00,118 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:00,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:00,738 INFO L93 Difference]: Finished difference Result 402 states and 512 transitions. [2020-08-21 18:43:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 18:43:00,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-21 18:43:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:00,744 INFO L225 Difference]: With dead ends: 402 [2020-08-21 18:43:00,744 INFO L226 Difference]: Without dead ends: 399 [2020-08-21 18:43:00,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:43:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-21 18:43:00,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 293. [2020-08-21 18:43:00,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-21 18:43:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-08-21 18:43:00,808 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 78 [2020-08-21 18:43:00,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:00,809 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-08-21 18:43:00,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:43:00,809 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-08-21 18:43:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 18:43:00,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:00,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:43:00,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:43:00,811 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:00,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:00,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-08-21 18:43:00,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:00,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676272705] [2020-08-21 18:43:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,052 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:01,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:43:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:43:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:43:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:43:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 18:43:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 18:43:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:01,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676272705] [2020-08-21 18:43:01,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:01,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:43:01,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692863130] [2020-08-21 18:43:01,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:43:01,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:01,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:43:01,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:43:01,190 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 9 states. [2020-08-21 18:43:02,108 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 18:43:02,340 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:43:02,570 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:02,800 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:03,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:03,611 INFO L93 Difference]: Finished difference Result 672 states and 837 transitions. [2020-08-21 18:43:03,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 18:43:03,612 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-21 18:43:03,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:03,618 INFO L225 Difference]: With dead ends: 672 [2020-08-21 18:43:03,618 INFO L226 Difference]: Without dead ends: 403 [2020-08-21 18:43:03,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:43:03,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-08-21 18:43:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 303. [2020-08-21 18:43:03,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-21 18:43:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2020-08-21 18:43:03,675 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 79 [2020-08-21 18:43:03,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:03,675 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2020-08-21 18:43:03,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:43:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2020-08-21 18:43:03,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 18:43:03,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:03,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:43:03,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:43:03,677 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:03,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:03,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-08-21 18:43:03,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:03,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410565444] [2020-08-21 18:43:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:03,937 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:03,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:03,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:03,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:03,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:03,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:43:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:04,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:43:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:04,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:04,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:43:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:04,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:43:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:04,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 18:43:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:04,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 18:43:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:04,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410565444] [2020-08-21 18:43:04,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:04,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 18:43:04,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558006105] [2020-08-21 18:43:04,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:43:04,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:04,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:43:04,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:43:04,100 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand 11 states. [2020-08-21 18:43:04,658 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:04,904 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:05,131 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:05,738 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:05,991 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:06,227 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:43:07,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:07,072 INFO L93 Difference]: Finished difference Result 696 states and 875 transitions. [2020-08-21 18:43:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 18:43:07,073 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-21 18:43:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:07,076 INFO L225 Difference]: With dead ends: 696 [2020-08-21 18:43:07,076 INFO L226 Difference]: Without dead ends: 417 [2020-08-21 18:43:07,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:43:07,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-21 18:43:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 311. [2020-08-21 18:43:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-21 18:43:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-08-21 18:43:07,153 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 79 [2020-08-21 18:43:07,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:07,153 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-08-21 18:43:07,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:43:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-08-21 18:43:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 18:43:07,155 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:07,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:43:07,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:43:07,156 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:07,156 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-08-21 18:43:07,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:07,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487518841] [2020-08-21 18:43:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,408 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 18:43:07,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:43:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:43:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:43:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:43:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:43:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 18:43:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 18:43:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:43:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:43:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:43:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 18:43:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 18:43:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:43:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:43:07,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487518841] [2020-08-21 18:43:07,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:43:07,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:43:07,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134855797] [2020-08-21 18:43:07,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:43:07,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:43:07,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:43:07,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:43:07,541 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 7 states. [2020-08-21 18:43:08,040 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:43:08,582 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 18:43:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:43:10,464 INFO L93 Difference]: Finished difference Result 1018 states and 1317 transitions. [2020-08-21 18:43:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:43:10,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-08-21 18:43:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:43:10,472 INFO L225 Difference]: With dead ends: 1018 [2020-08-21 18:43:10,472 INFO L226 Difference]: Without dead ends: 731 [2020-08-21 18:43:10,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:43:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-21 18:43:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2020-08-21 18:43:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-08-21 18:43:10,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 719 transitions. [2020-08-21 18:43:10,616 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 719 transitions. Word has length 79 [2020-08-21 18:43:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:43:10,618 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 719 transitions. [2020-08-21 18:43:10,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:43:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 719 transitions. [2020-08-21 18:43:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 18:43:10,622 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:43:10,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:43:10,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:43:10,623 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:43:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:43:10,623 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-08-21 18:43:10,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:43:10,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736755532] [2020-08-21 18:43:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:43:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 18:43:10,687 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 18:43:10,687 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 18:43:10,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:43:10,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 06:43:10 BoogieIcfgContainer [2020-08-21 18:43:10,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 18:43:10,735 INFO L168 Benchmark]: Toolchain (without parser) took 27605.18 ms. Allocated memory was 138.9 MB in the beginning and 586.7 MB in the end (delta: 447.7 MB). Free memory was 101.2 MB in the beginning and 197.8 MB in the end (delta: -96.6 MB). Peak memory consumption was 351.1 MB. Max. memory is 7.1 GB. [2020-08-21 18:43:10,736 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 18:43:10,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 618.27 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 100.8 MB in the beginning and 168.1 MB in the end (delta: -67.3 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-08-21 18:43:10,743 INFO L168 Benchmark]: Boogie Preprocessor took 87.20 ms. Allocated memory is still 200.3 MB. Free memory was 168.1 MB in the beginning and 163.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-21 18:43:10,745 INFO L168 Benchmark]: RCFGBuilder took 1180.08 ms. Allocated memory was 200.3 MB in the beginning and 232.8 MB in the end (delta: 32.5 MB). Free memory was 163.3 MB in the beginning and 194.8 MB in the end (delta: -31.5 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-08-21 18:43:10,748 INFO L168 Benchmark]: TraceAbstraction took 25713.52 ms. Allocated memory was 232.8 MB in the beginning and 586.7 MB in the end (delta: 353.9 MB). Free memory was 194.8 MB in the beginning and 197.8 MB in the end (delta: -3.0 MB). Peak memory consumption was 350.9 MB. Max. memory is 7.1 GB. [2020-08-21 18:43:10,756 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 618.27 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 100.8 MB in the beginning and 168.1 MB in the end (delta: -67.3 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.20 ms. Allocated memory is still 200.3 MB. Free memory was 168.1 MB in the beginning and 163.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1180.08 ms. Allocated memory was 200.3 MB in the beginning and 232.8 MB in the end (delta: 32.5 MB). Free memory was 163.3 MB in the beginning and 194.8 MB in the end (delta: -31.5 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25713.52 ms. Allocated memory was 232.8 MB in the beginning and 586.7 MB in the end (delta: 353.9 MB). Free memory was 194.8 MB in the beginning and 197.8 MB in the end (delta: -3.0 MB). Peak memory consumption was 350.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] splverifierCounter = 0 [L629] COND TRUE 1 [L631] COND TRUE splverifierCounter < 4 [L637] tmp = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp) [L641] CALL waterRise() [L542] COND TRUE waterLevel < 2 [L543] waterLevel = waterLevel + 1 [L641] RET waterRise() [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp___0) [L651] CALL changeMethaneLevel() [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 [L651] RET changeMethaneLevel() [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) [L674] CALL timeShift() [L697] COND FALSE !(\read(pumpRunning)) [L704] COND TRUE \read(systemActive) [L706] CALL processEnvironment() [L726] int tmp ; [L729] COND TRUE ! pumpRunning [L731] CALL, EXPR isHighWaterLevel() [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; [L829] CALL, EXPR isHighWaterSensorDry() [L604] int retValue_acc ; [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); [L829] RET, EXPR isHighWaterSensorDry() [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); [L731] RET, EXPR isHighWaterLevel() [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) [L735] CALL activatePump() [L754] pumpRunning = 1 [L735] RET activatePump() [L706] RET processEnvironment() [L712] CALL __utac_acc__Specification1_spec__1() [L851] int tmp ; [L852] int tmp___0 ; [L856] CALL, EXPR isMethaneLevelCritical() [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) [L860] CALL, EXPR isPumpRunning() [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); [L860] RET, EXPR isPumpRunning() [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) [L864] CALL __automaton_fail() [L514] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 20.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 901 SDtfs, 1722 SDslu, 881 SDs, 0 SdLazy, 4205 SolverSat, 1159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=9, 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, 9 MinimizatonAttempts, 621 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 677 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 176723 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...