/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:54:45,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:54:45,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:54:45,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:54:45,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:54:45,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:54:45,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:54:45,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:54:45,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:54:45,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:54:45,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:54:45,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:54:45,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:54:45,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:54:45,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:54:45,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:54:45,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:54:45,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:54:45,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:54:45,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:54:45,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:54:45,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:54:45,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:54:45,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:54:45,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:54:45,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:54:45,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:54:45,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:54:45,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:54:45,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:54:45,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:54:45,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:54:45,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:54:45,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:54:45,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:54:45,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:54:45,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:54:45,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:54:45,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:54:45,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:54:45,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:54:45,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:54:45,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:54:45,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:54:45,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:54:45,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:54:45,806 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:54:45,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:54:45,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:54:45,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:54:45,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:54:45,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:54:45,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:54:45,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:54:45,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:54:45,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:54:45,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:54:45,808 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:54:45,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:54:45,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:54:45,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:54:45,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:54:45,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:54:45,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:54:45,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:54:45,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:54:45,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:54:45,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:54:45,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:54:45,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:54:45,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:54:45,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:54:46,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:54:46,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:54:46,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:54:46,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:54:46,120 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:54:46,121 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-08-18 20:54:46,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/002221197/5102a81c46294f878f1c3f51fe23d85c/FLAG7d45f30ac [2020-08-18 20:54:46,672 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:54:46,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-08-18 20:54:46,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/002221197/5102a81c46294f878f1c3f51fe23d85c/FLAG7d45f30ac [2020-08-18 20:54:46,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/002221197/5102a81c46294f878f1c3f51fe23d85c [2020-08-18 20:54:46,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:54:46,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:54:46,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:54:46,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:54:46,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:54:46,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:54:46" (1/1) ... [2020-08-18 20:54:46,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5996606d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:46, skipping insertion in model container [2020-08-18 20:54:46,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:54:46" (1/1) ... [2020-08-18 20:54:46,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:54:47,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:54:47,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:54:47,433 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:54:47,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:54:47,613 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:54:47,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:47 WrapperNode [2020-08-18 20:54:47,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:54:47,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:54:47,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:54:47,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:54:47,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:47" (1/1) ... [2020-08-18 20:54:47,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:47" (1/1) ... [2020-08-18 20:54:47,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:47" (1/1) ... [2020-08-18 20:54:47,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:47" (1/1) ... [2020-08-18 20:54:47,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:47" (1/1) ... [2020-08-18 20:54:47,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:47" (1/1) ... [2020-08-18 20:54:47,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:47" (1/1) ... [2020-08-18 20:54:47,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:54:47,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:54:47,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:54:47,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:54:47,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:54:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:54:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:54:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:54:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:54:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:54:47,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:54:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:54:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:54:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:54:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:54:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:54:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:54:47,754 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:54:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:54:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:54:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:54:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:54:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:54:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:54:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:54:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:54:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:54:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:54:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:54:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:54:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:54:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:54:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:54:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:54:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:54:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:54:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:54:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:54:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:54:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:54:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:54:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:54:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:54:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:54:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:54:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:54:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:54:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:54:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:54:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:54:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:54:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:54:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:54:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:54:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:54:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:54:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:54:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:54:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:54:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:54:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:54:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:54:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:54:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:54:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:54:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:54:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:54:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:54:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:54:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:54:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:54:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:54:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:54:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:54:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:54:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:54:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:54:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:54:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:54:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:54:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:54:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:54:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:54:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:54:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:54:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:54:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:54:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:54:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:54:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:54:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:54:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:54:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:54:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:54:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:54:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:54:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:54:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:54:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:54:48,837 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:54:48,837 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:54:48,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:54:48 BoogieIcfgContainer [2020-08-18 20:54:48,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:54:48,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:54:48,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:54:48,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:54:48,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:54:46" (1/3) ... [2020-08-18 20:54:48,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a74beaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:54:48, skipping insertion in model container [2020-08-18 20:54:48,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:54:47" (2/3) ... [2020-08-18 20:54:48,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a74beaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:54:48, skipping insertion in model container [2020-08-18 20:54:48,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:54:48" (3/3) ... [2020-08-18 20:54:48,850 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product42.cil.c [2020-08-18 20:54:48,860 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:54:48,868 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:54:48,882 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:54:48,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:54:48,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:54:48,906 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:54:48,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:54:48,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:54:48,907 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:54:48,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:54:48,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:54:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 20:54:48,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:54:48,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:48,938 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] [2020-08-18 20:54:48,939 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:48,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1331255295, now seen corresponding path program 1 times [2020-08-18 20:54:48,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:48,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978164220] [2020-08-18 20:54:48,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:49,612 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:49,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:49,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:49,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:49,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:49,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:49,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:54:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:49,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:54:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:49,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978164220] [2020-08-18 20:54:49,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:49,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:54:49,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676537470] [2020-08-18 20:54:49,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:54:49,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:49,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:54:49,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:54:49,773 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-18 20:54:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:50,782 INFO L93 Difference]: Finished difference Result 284 states and 370 transitions. [2020-08-18 20:54:50,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:54:50,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 20:54:50,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:50,799 INFO L225 Difference]: With dead ends: 284 [2020-08-18 20:54:50,800 INFO L226 Difference]: Without dead ends: 159 [2020-08-18 20:54:50,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:54:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-18 20:54:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 126. [2020-08-18 20:54:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-18 20:54:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-18 20:54:50,885 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 51 [2020-08-18 20:54:50,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:50,887 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-18 20:54:50,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:54:50,887 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-18 20:54:50,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:54:50,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:50,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:54:50,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:54:50,894 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:50,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:50,894 INFO L82 PathProgramCache]: Analyzing trace with hash -42152189, now seen corresponding path program 1 times [2020-08-18 20:54:50,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:50,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493542076] [2020-08-18 20:54:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,283 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:54:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:54:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:51,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493542076] [2020-08-18 20:54:51,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:51,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:54:51,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203275926] [2020-08-18 20:54:51,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:54:51,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:51,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:54:51,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:54:51,334 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 5 states. [2020-08-18 20:54:51,802 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:54:52,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:52,648 INFO L93 Difference]: Finished difference Result 225 states and 277 transitions. [2020-08-18 20:54:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:54:52,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 20:54:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:52,653 INFO L225 Difference]: With dead ends: 225 [2020-08-18 20:54:52,653 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 20:54:52,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:54:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 20:54:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-18 20:54:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 20:54:52,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-18 20:54:52,693 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 52 [2020-08-18 20:54:52,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:52,694 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-18 20:54:52,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:54:52,694 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-18 20:54:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 20:54:52,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:52,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:54:52,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:54:52,697 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:52,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1757460962, now seen corresponding path program 1 times [2020-08-18 20:54:52,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:52,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381135932] [2020-08-18 20:54:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:53,029 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:53,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:53,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:53,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:53,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:54:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:53,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 20:54:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:53,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381135932] [2020-08-18 20:54:53,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:53,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:54:53,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911906982] [2020-08-18 20:54:53,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:54:53,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:53,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:54:53,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:54:53,122 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 9 states. [2020-08-18 20:54:53,499 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:53,838 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:54,082 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:54,303 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:54:55,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:55,390 INFO L93 Difference]: Finished difference Result 238 states and 296 transitions. [2020-08-18 20:54:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:54:55,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 20:54:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:55,393 INFO L225 Difference]: With dead ends: 238 [2020-08-18 20:54:55,393 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 20:54:55,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:54:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 20:54:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-18 20:54:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 20:54:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-08-18 20:54:55,431 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 57 [2020-08-18 20:54:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:55,431 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-08-18 20:54:55,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:54:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-08-18 20:54:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 20:54:55,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:55,434 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] [2020-08-18 20:54:55,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:54:55,434 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:55,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:55,435 INFO L82 PathProgramCache]: Analyzing trace with hash 2060596455, now seen corresponding path program 1 times [2020-08-18 20:54:55,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:55,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026576298] [2020-08-18 20:54:55,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:55,726 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:55,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:55,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:55,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:55,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:54:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:54:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:55,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:54:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:55,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 20:54:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:55,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026576298] [2020-08-18 20:54:55,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:55,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:54:55,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234331130] [2020-08-18 20:54:55,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:54:55,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:55,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:54:55,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:54:55,840 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 7 states. [2020-08-18 20:54:56,155 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:57,269 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:54:57,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:54:57,902 INFO L93 Difference]: Finished difference Result 328 states and 412 transitions. [2020-08-18 20:54:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:54:57,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-18 20:54:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:54:57,907 INFO L225 Difference]: With dead ends: 328 [2020-08-18 20:54:57,907 INFO L226 Difference]: Without dead ends: 239 [2020-08-18 20:54:57,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:54:57,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-08-18 20:54:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 190. [2020-08-18 20:54:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-18 20:54:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 219 transitions. [2020-08-18 20:54:57,953 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 219 transitions. Word has length 65 [2020-08-18 20:54:57,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:54:57,954 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 219 transitions. [2020-08-18 20:54:57,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:54:57,954 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 219 transitions. [2020-08-18 20:54:57,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 20:54:57,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:54:57,956 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] [2020-08-18 20:54:57,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:54:57,956 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:54:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:54:57,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1161742780, now seen corresponding path program 1 times [2020-08-18 20:54:57,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:54:57,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071414226] [2020-08-18 20:54:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:54:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,264 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:54:58,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:54:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:54:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:54:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:54:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:54:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:54:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:54:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:54:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:54:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:54:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 20:54:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:54:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:54:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:54:58,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071414226] [2020-08-18 20:54:58,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:54:58,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:54:58,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163215806] [2020-08-18 20:54:58,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:54:58,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:54:58,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:54:58,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:54:58,359 INFO L87 Difference]: Start difference. First operand 190 states and 219 transitions. Second operand 9 states. [2020-08-18 20:54:58,738 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:54:59,703 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:00,001 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:00,514 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:00,737 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:01,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:01,580 INFO L93 Difference]: Finished difference Result 566 states and 718 transitions. [2020-08-18 20:55:01,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 20:55:01,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-18 20:55:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:01,586 INFO L225 Difference]: With dead ends: 566 [2020-08-18 20:55:01,586 INFO L226 Difference]: Without dead ends: 404 [2020-08-18 20:55:01,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 20:55:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-08-18 20:55:01,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 328. [2020-08-18 20:55:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-08-18 20:55:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 378 transitions. [2020-08-18 20:55:01,706 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 378 transitions. Word has length 79 [2020-08-18 20:55:01,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:01,709 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 378 transitions. [2020-08-18 20:55:01,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:55:01,710 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 378 transitions. [2020-08-18 20:55:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:55:01,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:01,716 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] [2020-08-18 20:55:01,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:55:01,716 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:01,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1027537504, now seen corresponding path program 1 times [2020-08-18 20:55:01,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:01,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127352362] [2020-08-18 20:55:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,974 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:01,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:01,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:55:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 20:55:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:55:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:02,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127352362] [2020-08-18 20:55:02,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:02,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:55:02,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800945288] [2020-08-18 20:55:02,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:55:02,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:02,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:55:02,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:55:02,090 INFO L87 Difference]: Start difference. First operand 328 states and 378 transitions. Second operand 10 states. [2020-08-18 20:55:02,485 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:03,650 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:04,662 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:05,014 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:05,241 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:05,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:05,544 INFO L93 Difference]: Finished difference Result 742 states and 925 transitions. [2020-08-18 20:55:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:55:05,545 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-18 20:55:05,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:05,550 INFO L225 Difference]: With dead ends: 742 [2020-08-18 20:55:05,550 INFO L226 Difference]: Without dead ends: 442 [2020-08-18 20:55:05,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2020-08-18 20:55:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-08-18 20:55:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 327. [2020-08-18 20:55:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-08-18 20:55:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 375 transitions. [2020-08-18 20:55:05,631 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 375 transitions. Word has length 83 [2020-08-18 20:55:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:05,631 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 375 transitions. [2020-08-18 20:55:05,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:55:05,631 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 375 transitions. [2020-08-18 20:55:05,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 20:55:05,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:05,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:05,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:55:05,633 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:05,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:05,634 INFO L82 PathProgramCache]: Analyzing trace with hash 928544888, now seen corresponding path program 1 times [2020-08-18 20:55:05,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:05,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642551136] [2020-08-18 20:55:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,902 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:05,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:55:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:06,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:06,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:06,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:06,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:06,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:06,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:55:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:55:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:55:06,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642551136] [2020-08-18 20:55:06,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:06,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:55:06,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394549099] [2020-08-18 20:55:06,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:55:06,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:06,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:55:06,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:55:06,112 INFO L87 Difference]: Start difference. First operand 327 states and 375 transitions. Second operand 10 states. [2020-08-18 20:55:07,270 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:07,512 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:55:07,746 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:07,981 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:08,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:08,821 INFO L93 Difference]: Finished difference Result 749 states and 953 transitions. [2020-08-18 20:55:08,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:55:08,822 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-08-18 20:55:08,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:08,825 INFO L225 Difference]: With dead ends: 749 [2020-08-18 20:55:08,825 INFO L226 Difference]: Without dead ends: 450 [2020-08-18 20:55:08,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:55:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-08-18 20:55:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 337. [2020-08-18 20:55:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-08-18 20:55:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 385 transitions. [2020-08-18 20:55:08,900 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 385 transitions. Word has length 99 [2020-08-18 20:55:08,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:08,900 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 385 transitions. [2020-08-18 20:55:08,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:55:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 385 transitions. [2020-08-18 20:55:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 20:55:08,902 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:08,902 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:08,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:55:08,903 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:08,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:08,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1120842954, now seen corresponding path program 1 times [2020-08-18 20:55:08,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:08,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144373639] [2020-08-18 20:55:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,180 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:09,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:55:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:55:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:55:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:55:09,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144373639] [2020-08-18 20:55:09,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:09,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:55:09,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166178152] [2020-08-18 20:55:09,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:55:09,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:09,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:55:09,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:55:09,359 INFO L87 Difference]: Start difference. First operand 337 states and 385 transitions. Second operand 12 states. [2020-08-18 20:55:09,829 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:10,087 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:10,310 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:10,952 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:11,202 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:11,431 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:12,535 INFO L93 Difference]: Finished difference Result 769 states and 975 transitions. [2020-08-18 20:55:12,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:55:12,535 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-08-18 20:55:12,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:12,538 INFO L225 Difference]: With dead ends: 769 [2020-08-18 20:55:12,539 INFO L226 Difference]: Without dead ends: 460 [2020-08-18 20:55:12,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 20:55:12,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-08-18 20:55:12,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 345. [2020-08-18 20:55:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-18 20:55:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-18 20:55:12,608 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 99 [2020-08-18 20:55:12,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:12,609 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-18 20:55:12,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:55:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-18 20:55:12,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 20:55:12,611 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:12,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:12,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:55:12,611 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:12,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:12,612 INFO L82 PathProgramCache]: Analyzing trace with hash -151261931, now seen corresponding path program 1 times [2020-08-18 20:55:12,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:12,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333774384] [2020-08-18 20:55:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,865 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:12,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:55:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 20:55:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:55:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:55:12,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333774384] [2020-08-18 20:55:12,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:12,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:55:12,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567920392] [2020-08-18 20:55:12,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:55:12,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:12,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:55:12,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:55:12,997 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 8 states. [2020-08-18 20:55:13,403 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:13,916 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:15,982 INFO L93 Difference]: Finished difference Result 1097 states and 1430 transitions. [2020-08-18 20:55:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:55:15,982 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-08-18 20:55:15,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:15,988 INFO L225 Difference]: With dead ends: 1097 [2020-08-18 20:55:15,988 INFO L226 Difference]: Without dead ends: 780 [2020-08-18 20:55:15,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-18 20:55:15,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-08-18 20:55:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 635. [2020-08-18 20:55:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-08-18 20:55:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 745 transitions. [2020-08-18 20:55:16,124 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 745 transitions. Word has length 99 [2020-08-18 20:55:16,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:16,125 INFO L479 AbstractCegarLoop]: Abstraction has 635 states and 745 transitions. [2020-08-18 20:55:16,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:55:16,126 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 745 transitions. [2020-08-18 20:55:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 20:55:16,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:16,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:16,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:55:16,129 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:16,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:16,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1889082245, now seen corresponding path program 1 times [2020-08-18 20:55:16,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:16,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457993494] [2020-08-18 20:55:16,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,412 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:16,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:55:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:55:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 20:55:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 20:55:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 20:55:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 20:55:16,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457993494] [2020-08-18 20:55:16,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:55:16,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 20:55:16,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461211604] [2020-08-18 20:55:16,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 20:55:16,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:16,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 20:55:16,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:55:16,866 INFO L87 Difference]: Start difference. First operand 635 states and 745 transitions. Second operand 18 states. [2020-08-18 20:55:17,702 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:18,069 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:55:18,351 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:55:18,599 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:55:19,261 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:20,176 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:55:20,489 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:55:20,734 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:55:20,985 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:55:21,329 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:55:21,603 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:55:22,204 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-18 20:55:22,742 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-18 20:55:24,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:24,485 INFO L93 Difference]: Finished difference Result 1355 states and 1681 transitions. [2020-08-18 20:55:24,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-18 20:55:24,485 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2020-08-18 20:55:24,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:24,491 INFO L225 Difference]: With dead ends: 1355 [2020-08-18 20:55:24,491 INFO L226 Difference]: Without dead ends: 748 [2020-08-18 20:55:24,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=474, Invalid=1878, Unknown=0, NotChecked=0, Total=2352 [2020-08-18 20:55:24,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-08-18 20:55:24,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 612. [2020-08-18 20:55:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2020-08-18 20:55:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 706 transitions. [2020-08-18 20:55:24,614 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 706 transitions. Word has length 103 [2020-08-18 20:55:24,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:24,614 INFO L479 AbstractCegarLoop]: Abstraction has 612 states and 706 transitions. [2020-08-18 20:55:24,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 20:55:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 706 transitions. [2020-08-18 20:55:24,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 20:55:24,617 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:24,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:24,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:55:24,618 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:24,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:24,619 INFO L82 PathProgramCache]: Analyzing trace with hash -75649928, now seen corresponding path program 1 times [2020-08-18 20:55:24,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:24,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083031077] [2020-08-18 20:55:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,882 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:24,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:55:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:55:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:55:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 20:55:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:55:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:24,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 20:55:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:25,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 20:55:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:25,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 20:55:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 20:55:25,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083031077] [2020-08-18 20:55:25,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:55:25,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 20:55:25,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56569427] [2020-08-18 20:55:25,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:55:25,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:25,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:55:25,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:55:25,027 INFO L87 Difference]: Start difference. First operand 612 states and 706 transitions. Second operand 9 states. [2020-08-18 20:55:25,342 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:27,263 INFO L93 Difference]: Finished difference Result 1176 states and 1496 transitions. [2020-08-18 20:55:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:55:27,264 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-08-18 20:55:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:27,272 INFO L225 Difference]: With dead ends: 1176 [2020-08-18 20:55:27,272 INFO L226 Difference]: Without dead ends: 1173 [2020-08-18 20:55:27,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2020-08-18 20:55:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-08-18 20:55:27,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 957. [2020-08-18 20:55:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-08-18 20:55:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1109 transitions. [2020-08-18 20:55:27,504 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1109 transitions. Word has length 139 [2020-08-18 20:55:27,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:27,508 INFO L479 AbstractCegarLoop]: Abstraction has 957 states and 1109 transitions. [2020-08-18 20:55:27,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:55:27,508 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1109 transitions. [2020-08-18 20:55:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-08-18 20:55:27,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:27,514 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:27,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:55:27,514 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:27,514 INFO L82 PathProgramCache]: Analyzing trace with hash 518424548, now seen corresponding path program 1 times [2020-08-18 20:55:27,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:27,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876377442] [2020-08-18 20:55:27,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,805 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:27,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:55:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:55:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:55:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 20:55:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 20:55:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:55:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:55:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:27,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-18 20:55:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 20:55:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-18 20:55:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-18 20:55:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-18 20:55:28,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876377442] [2020-08-18 20:55:28,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:55:28,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 20:55:28,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038602387] [2020-08-18 20:55:28,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:55:28,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:28,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:55:28,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:55:28,044 INFO L87 Difference]: Start difference. First operand 957 states and 1109 transitions. Second operand 12 states. [2020-08-18 20:55:28,435 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:29,009 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:31,293 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:32,444 INFO L93 Difference]: Finished difference Result 2620 states and 3290 transitions. [2020-08-18 20:55:32,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 20:55:32,445 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 182 [2020-08-18 20:55:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:32,456 INFO L225 Difference]: With dead ends: 2620 [2020-08-18 20:55:32,457 INFO L226 Difference]: Without dead ends: 1813 [2020-08-18 20:55:32,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 76 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=375, Invalid=1107, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 20:55:32,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2020-08-18 20:55:32,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1431. [2020-08-18 20:55:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-08-18 20:55:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1657 transitions. [2020-08-18 20:55:32,816 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1657 transitions. Word has length 182 [2020-08-18 20:55:32,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:32,816 INFO L479 AbstractCegarLoop]: Abstraction has 1431 states and 1657 transitions. [2020-08-18 20:55:32,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:55:32,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1657 transitions. [2020-08-18 20:55:32,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-08-18 20:55:32,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:32,821 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:32,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 20:55:32,821 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:32,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:32,822 INFO L82 PathProgramCache]: Analyzing trace with hash -867778846, now seen corresponding path program 1 times [2020-08-18 20:55:32,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:32,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392321048] [2020-08-18 20:55:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:55:32,913 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:55:32,913 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:55:32,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 20:55:32,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:55:32 BoogieIcfgContainer [2020-08-18 20:55:32,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:55:32,972 INFO L168 Benchmark]: Toolchain (without parser) took 46019.25 ms. Allocated memory was 140.0 MB in the beginning and 664.8 MB in the end (delta: 524.8 MB). Free memory was 101.8 MB in the beginning and 130.4 MB in the end (delta: -28.6 MB). Peak memory consumption was 496.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:55:32,973 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:55:32,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.35 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 101.6 MB in the beginning and 172.9 MB in the end (delta: -71.3 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:55:32,974 INFO L168 Benchmark]: Boogie Preprocessor took 78.77 ms. Allocated memory is still 205.0 MB. Free memory was 172.2 MB in the beginning and 168.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:55:32,975 INFO L168 Benchmark]: RCFGBuilder took 1148.51 ms. Allocated memory was 205.0 MB in the beginning and 233.3 MB in the end (delta: 28.3 MB). Free memory was 168.2 MB in the beginning and 191.7 MB in the end (delta: -23.5 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:55:32,976 INFO L168 Benchmark]: TraceAbstraction took 44127.49 ms. Allocated memory was 233.3 MB in the beginning and 664.8 MB in the end (delta: 431.5 MB). Free memory was 191.7 MB in the beginning and 130.4 MB in the end (delta: 61.3 MB). Peak memory consumption was 492.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:55:32,978 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.35 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 101.6 MB in the beginning and 172.9 MB in the end (delta: -71.3 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.77 ms. Allocated memory is still 205.0 MB. Free memory was 172.2 MB in the beginning and 168.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1148.51 ms. Allocated memory was 205.0 MB in the beginning and 233.3 MB in the end (delta: 28.3 MB). Free memory was 168.2 MB in the beginning and 191.7 MB in the end (delta: -23.5 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44127.49 ms. Allocated memory was 233.3 MB in the beginning and 664.8 MB in the end (delta: 431.5 MB). Free memory was 191.7 MB in the beginning and 130.4 MB in the end (delta: 61.3 MB). Peak memory consumption was 492.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 844]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L486] int pumpRunning = 0; [L487] int systemActive = 1; [L666] int methAndRunningLastTime ; [L743] int cleanupTimeShifts = 4; [L850] int waterLevel = 1; [L851] int methaneLevelCritical = 0; [L817] int retValue_acc ; [L818] int tmp ; [L822] FCALL select_helpers() [L823] FCALL select_features() [L824] CALL, EXPR valid_product() [L734] int retValue_acc ; [L737] retValue_acc = 1 [L738] return (retValue_acc); [L824] RET, EXPR valid_product() [L824] tmp = valid_product() [L826] COND TRUE \read(tmp) [L828] FCALL setup() [L829] CALL runTest() [L810] CALL __utac_acc__Specification2_spec__1() [L671] methAndRunningLastTime = 0 [L810] RET __utac_acc__Specification2_spec__1() [L811] CALL test() [L412] int splverifierCounter ; [L413] int tmp ; [L414] int tmp___0 ; [L415] int tmp___1 ; [L416] int tmp___2 ; [L419] splverifierCounter = 0 [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp) [L433] CALL waterRise() [L868] COND TRUE waterLevel < 2 [L869] waterLevel = waterLevel + 1 [L433] RET waterRise() [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp___0)) [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND FALSE !(\read(pumpRunning)) [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND TRUE ! pumpRunning [L528] CALL, EXPR isHighWaterLevel() [L638] int retValue_acc ; [L639] int tmp ; [L640] int tmp___0 ; [L644] CALL, EXPR isHighWaterSensorDry() [L930] int retValue_acc ; [L933] COND FALSE !(waterLevel < 2) [L937] retValue_acc = 0 [L938] return (retValue_acc); [L644] RET, EXPR isHighWaterSensorDry() [L644] tmp = isHighWaterSensorDry() [L646] COND FALSE !(\read(tmp)) [L649] tmp___0 = 1 [L651] retValue_acc = tmp___0 [L652] return (retValue_acc); [L528] RET, EXPR isHighWaterLevel() [L528] tmp = isHighWaterLevel() [L530] COND TRUE \read(tmp) [L532] CALL activatePump() [L557] int tmp ; [L561] CALL, EXPR isMethaneAlarm() [L582] int retValue_acc ; [L586] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L586] RET, EXPR isMethaneLevelCritical() [L586] retValue_acc = isMethaneLevelCritical() [L588] return (retValue_acc); [L561] RET, EXPR isMethaneAlarm() [L561] tmp = isMethaneAlarm() [L563] COND FALSE !(\read(tmp)) [L567] CALL activatePump__wrappee__highWaterSensor() [L551] pumpRunning = 1 [L567] RET activatePump__wrappee__highWaterSensor() [L532] RET activatePump() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND FALSE !(\read(tmp)) [L699] methAndRunningLastTime = 0 [L509] RET __utac_acc__Specification2_spec__2() [L466] RET timeShift() [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND FALSE !(\read(tmp)) [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp___0) [L443] CALL changeMethaneLevel() [L880] COND FALSE !(\read(methaneLevelCritical)) [L883] methaneLevelCritical = 1 [L443] RET changeMethaneLevel() [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND TRUE \read(pumpRunning) [L496] CALL lowerWaterLevel() [L856] COND TRUE waterLevel > 0 [L857] waterLevel = waterLevel - 1 [L496] RET lowerWaterLevel() [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND FALSE !(! pumpRunning) [L541] FCALL processEnvironment__wrappee__base() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND TRUE \read(tmp) [L685] CALL, EXPR isPumpRunning() [L593] int retValue_acc ; [L596] retValue_acc = pumpRunning [L597] return (retValue_acc); [L685] RET, EXPR isPumpRunning() [L685] tmp___0 = isPumpRunning() [L687] COND TRUE \read(tmp___0) [L688] COND FALSE !(\read(methAndRunningLastTime)) [L693] methAndRunningLastTime = 1 [L509] RET __utac_acc__Specification2_spec__2() [L466] RET timeShift() [L421] COND TRUE 1 [L423] COND TRUE splverifierCounter < 4 [L429] tmp = __VERIFIER_nondet_int() [L431] COND FALSE !(\read(tmp)) [L439] tmp___0 = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp___0)) [L449] tmp___2 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___2)) [L457] tmp___1 = __VERIFIER_nondet_int() [L459] COND TRUE \read(tmp___1) [L466] CALL timeShift() [L494] COND TRUE \read(pumpRunning) [L496] CALL lowerWaterLevel() [L856] COND TRUE waterLevel > 0 [L857] waterLevel = waterLevel - 1 [L496] RET lowerWaterLevel() [L501] COND TRUE \read(systemActive) [L503] CALL processEnvironment() [L523] int tmp ; [L526] COND FALSE !(! pumpRunning) [L541] FCALL processEnvironment__wrappee__base() [L503] RET processEnvironment() [L509] CALL __utac_acc__Specification2_spec__2() [L676] int tmp ; [L677] int tmp___0 ; [L681] CALL, EXPR isMethaneLevelCritical() [L889] int retValue_acc ; [L892] retValue_acc = methaneLevelCritical [L893] return (retValue_acc); [L681] RET, EXPR isMethaneLevelCritical() [L681] tmp = isMethaneLevelCritical() [L683] COND TRUE \read(tmp) [L685] CALL, EXPR isPumpRunning() [L593] int retValue_acc ; [L596] retValue_acc = pumpRunning [L597] return (retValue_acc); [L685] RET, EXPR isPumpRunning() [L685] tmp___0 = isPumpRunning() [L687] COND TRUE \read(tmp___0) [L688] COND TRUE \read(methAndRunningLastTime) [L690] CALL __automaton_fail() [L844] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 44.0s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 36.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1499 SDtfs, 3941 SDslu, 1993 SDs, 0 SdLazy, 9311 SolverSat, 2875 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 664 GetRequests, 418 SyntacticMatches, 9 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 16.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1431occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1444 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 1290 NumberOfCodeBlocks, 1290 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1096 ConstructedInterpolants, 0 QuantifiedInterpolants, 407768 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 119/145 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...