/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:31:28,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:31:28,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:31:28,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:31:28,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:31:28,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:31:28,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:31:28,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:31:28,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:31:28,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:31:28,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:31:28,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:31:28,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:31:28,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:31:28,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:31:28,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:31:28,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:31:28,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:31:28,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:31:28,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:31:28,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:31:28,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:31:28,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:31:28,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:31:28,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:31:28,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:31:28,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:31:28,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:31:28,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:31:28,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:31:28,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:31:28,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:31:28,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:31:28,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:31:28,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:31:28,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:31:28,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:31:28,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:31:28,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:31:28,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:31:28,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:31:28,733 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 [2020-08-22 04:31:28,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:31:28,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:31:28,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:31:28,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:31:28,771 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:31:28,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:31:28,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:31:28,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:31:28,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:31:28,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:31:28,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:31:28,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:31:28,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:31:28,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:31:28,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:31:28,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:31:28,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:31:28,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:31:28,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:31:28,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:31:28,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:31:28,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:31:28,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:31:28,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:31:28,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:31:28,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:31:28,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:31:28,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:31:28,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:31:28,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:31:29,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:31:29,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:31:29,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:31:29,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:31:29,124 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:31:29,125 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-22 04:31:29,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/396b1248f/36601b29e1d944bb859617c5e65c34d9/FLAG7b7472320 [2020-08-22 04:31:29,741 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:31:29,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-22 04:31:29,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/396b1248f/36601b29e1d944bb859617c5e65c34d9/FLAG7b7472320 [2020-08-22 04:31:30,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/396b1248f/36601b29e1d944bb859617c5e65c34d9 [2020-08-22 04:31:30,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:31:30,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:31:30,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:31:30,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:31:30,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:31:30,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:31:30" (1/1) ... [2020-08-22 04:31:30,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54116fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:30, skipping insertion in model container [2020-08-22 04:31:30,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:31:30" (1/1) ... [2020-08-22 04:31:30,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:31:30,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:31:30,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:31:30,461 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:31:30,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:31:30,694 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:31:30,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:30 WrapperNode [2020-08-22 04:31:30,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:31:30,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:31:30,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:31:30,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:31:30,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:30" (1/1) ... [2020-08-22 04:31:30,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:30" (1/1) ... [2020-08-22 04:31:30,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:30" (1/1) ... [2020-08-22 04:31:30,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:30" (1/1) ... [2020-08-22 04:31:30,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:30" (1/1) ... [2020-08-22 04:31:30,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:30" (1/1) ... [2020-08-22 04:31:30,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:30" (1/1) ... [2020-08-22 04:31:30,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:31:30,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:31:30,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:31:30,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:31:30,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:30" (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 [2020-08-22 04:31:30,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:31:30,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:31:30,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:31:30,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:31:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:31:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:31:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:31:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:31:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:31:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:31:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:31:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:31:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:31:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:31:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:31:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:31:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:31:30,862 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:31:30,862 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:31:30,862 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:31:30,862 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:31:30,862 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:31:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:31:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:31:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:31:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:31:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:31:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:31:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:31:30,864 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:31:30,864 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:31:30,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:31:30,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:31:30,864 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:31:30,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:31:30,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:31:30,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 04:31:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:31:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:31:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:31:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:31:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:31:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:31:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:31:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:31:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:31:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:31:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:31:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:31:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:31:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:31:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:31:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:31:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:31:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:31:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:31:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:31:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:31:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:31:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:31:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:31:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:31:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:31:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:31:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:31:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:31:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:31:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:31:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:31:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:31:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:31:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:31:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:31:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:31:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:31:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:31:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:31:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:31:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:31:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 04:31:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:31:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:31:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:31:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:31:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:31:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:31:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:31:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:31:31,973 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:31:31,974 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:31:31,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:31:31 BoogieIcfgContainer [2020-08-22 04:31:31,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:31:31,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:31:31,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:31:31,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:31:31,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:31:30" (1/3) ... [2020-08-22 04:31:31,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc53f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:31:31, skipping insertion in model container [2020-08-22 04:31:31,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:31:30" (2/3) ... [2020-08-22 04:31:31,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc53f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:31:31, skipping insertion in model container [2020-08-22 04:31:31,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:31:31" (3/3) ... [2020-08-22 04:31:31,996 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-08-22 04:31:32,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:31:32,018 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:31:32,032 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:31:32,064 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:31:32,065 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:31:32,065 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:31:32,065 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:31:32,065 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:31:32,065 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:31:32,065 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:31:32,066 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:31:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-22 04:31:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 04:31:32,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:32,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:31:32,097 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:32,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:32,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1120421974, now seen corresponding path program 1 times [2020-08-22 04:31:32,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:32,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534184129] [2020-08-22 04:31:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:32,779 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:32,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:32,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:32,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:32,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:32,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:31:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:32,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:31:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:31:32,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534184129] [2020-08-22 04:31:32,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:31:32,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:31:32,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306099457] [2020-08-22 04:31:32,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:31:32,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:32,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:31:32,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:31:32,882 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-22 04:31:33,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:33,915 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-22 04:31:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:31:33,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 04:31:33,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:33,931 INFO L225 Difference]: With dead ends: 249 [2020-08-22 04:31:33,931 INFO L226 Difference]: Without dead ends: 135 [2020-08-22 04:31:33,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:31:33,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-22 04:31:34,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-22 04:31:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-22 04:31:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-22 04:31:34,045 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-22 04:31:34,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:34,046 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-22 04:31:34,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:31:34,047 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-22 04:31:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 04:31:34,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:34,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:31:34,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:31:34,052 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:34,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:34,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1195015831, now seen corresponding path program 1 times [2020-08-22 04:31:34,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:34,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808995001] [2020-08-22 04:31:34,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:34,496 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:34,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:34,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:34,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:34,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:31:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:34,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:31:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:31:34,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808995001] [2020-08-22 04:31:34,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:31:34,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:31:34,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750874545] [2020-08-22 04:31:34,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:31:34,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:34,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:31:34,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:31:34,543 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-22 04:31:34,948 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:35,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:35,603 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-22 04:31:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:31:35,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 04:31:35,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:35,612 INFO L225 Difference]: With dead ends: 182 [2020-08-22 04:31:35,612 INFO L226 Difference]: Without dead ends: 119 [2020-08-22 04:31:35,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:31:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-22 04:31:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-22 04:31:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-22 04:31:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-22 04:31:35,644 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-22 04:31:35,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:35,644 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-22 04:31:35,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:31:35,645 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-22 04:31:35,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 04:31:35,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:35,649 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] [2020-08-22 04:31:35,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:31:35,649 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:35,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:35,650 INFO L82 PathProgramCache]: Analyzing trace with hash -234309885, now seen corresponding path program 1 times [2020-08-22 04:31:35,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:35,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366735861] [2020-08-22 04:31:35,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:35,973 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:35,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:36,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:36,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:36,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:36,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:36,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:31:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:31:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:31:36,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366735861] [2020-08-22 04:31:36,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:31:36,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:31:36,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189307178] [2020-08-22 04:31:36,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:31:36,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:36,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:31:36,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:31:36,085 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-22 04:31:36,486 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:36,770 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:37,025 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:37,295 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:38,190 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-22 04:31:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:31:38,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 04:31:38,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:38,193 INFO L225 Difference]: With dead ends: 191 [2020-08-22 04:31:38,193 INFO L226 Difference]: Without dead ends: 119 [2020-08-22 04:31:38,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:31:38,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-22 04:31:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-22 04:31:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-22 04:31:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-22 04:31:38,223 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-22 04:31:38,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:38,224 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-22 04:31:38,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:31:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-22 04:31:38,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 04:31:38,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:38,226 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] [2020-08-22 04:31:38,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:31:38,226 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:38,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:38,227 INFO L82 PathProgramCache]: Analyzing trace with hash -962632878, now seen corresponding path program 1 times [2020-08-22 04:31:38,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:38,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460596991] [2020-08-22 04:31:38,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:38,534 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:38,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:38,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:38,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:38,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:31:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:38,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:38,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:31:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 04:31:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:31:38,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460596991] [2020-08-22 04:31:38,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:31:38,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:31:38,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987903956] [2020-08-22 04:31:38,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:31:38,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:38,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:31:38,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:31:38,608 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-22 04:31:38,951 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:39,958 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:40,336 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-22 04:31:40,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:31:40,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-22 04:31:40,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:40,340 INFO L225 Difference]: With dead ends: 274 [2020-08-22 04:31:40,340 INFO L226 Difference]: Without dead ends: 202 [2020-08-22 04:31:40,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:31:40,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-22 04:31:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-22 04:31:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-22 04:31:40,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-22 04:31:40,381 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-22 04:31:40,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:40,382 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-22 04:31:40,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:31:40,382 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-22 04:31:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-22 04:31:40,384 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:40,384 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] [2020-08-22 04:31:40,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:31:40,384 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:40,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:40,385 INFO L82 PathProgramCache]: Analyzing trace with hash 869233952, now seen corresponding path program 1 times [2020-08-22 04:31:40,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:40,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333392006] [2020-08-22 04:31:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,685 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:40,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:31:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:31:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:31:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 04:31:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 04:31:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:31:40,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333392006] [2020-08-22 04:31:40,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:31:40,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:31:40,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342610089] [2020-08-22 04:31:40,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:31:40,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:40,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:31:40,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:31:40,815 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 12 states. [2020-08-22 04:31:41,365 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:41,663 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:41,898 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:42,157 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:42,685 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:43,414 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:43,687 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:43,916 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:44,139 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:31:44,388 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:44,630 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:45,488 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:45,754 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:46,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:46,413 INFO L93 Difference]: Finished difference Result 568 states and 750 transitions. [2020-08-22 04:31:46,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 04:31:46,414 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-22 04:31:46,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:46,419 INFO L225 Difference]: With dead ends: 568 [2020-08-22 04:31:46,420 INFO L226 Difference]: Without dead ends: 431 [2020-08-22 04:31:46,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 04:31:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-08-22 04:31:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 373. [2020-08-22 04:31:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-22 04:31:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 443 transitions. [2020-08-22 04:31:46,506 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 443 transitions. Word has length 73 [2020-08-22 04:31:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:46,507 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 443 transitions. [2020-08-22 04:31:46,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:31:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 443 transitions. [2020-08-22 04:31:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-22 04:31:46,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:46,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-08-22 04:31:46,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:31:46,512 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:46,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1180420772, now seen corresponding path program 1 times [2020-08-22 04:31:46,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:46,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738495965] [2020-08-22 04:31:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,805 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:46,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:31:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:31:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:31:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:31:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:31:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:31:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 04:31:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 04:31:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 04:31:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 04:31:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 04:31:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 04:31:46,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738495965] [2020-08-22 04:31:46,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:31:46,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 04:31:47,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56288132] [2020-08-22 04:31:47,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 04:31:47,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:47,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 04:31:47,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 04:31:47,001 INFO L87 Difference]: Start difference. First operand 373 states and 443 transitions. Second operand 13 states. [2020-08-22 04:31:47,552 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:48,128 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:48,654 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:48,925 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 04:31:49,222 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:31:49,486 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:49,736 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:31:50,019 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 04:31:50,317 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:31:50,599 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:31:51,974 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:52,226 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:31:52,471 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:52,717 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:53,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:53,234 INFO L93 Difference]: Finished difference Result 778 states and 1000 transitions. [2020-08-22 04:31:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 04:31:53,235 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 117 [2020-08-22 04:31:53,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:53,241 INFO L225 Difference]: With dead ends: 778 [2020-08-22 04:31:53,241 INFO L226 Difference]: Without dead ends: 429 [2020-08-22 04:31:53,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 04:31:53,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-22 04:31:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 367. [2020-08-22 04:31:53,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-22 04:31:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 437 transitions. [2020-08-22 04:31:53,311 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 437 transitions. Word has length 117 [2020-08-22 04:31:53,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:53,312 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 437 transitions. [2020-08-22 04:31:53,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 04:31:53,312 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 437 transitions. [2020-08-22 04:31:53,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-22 04:31:53,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:53,315 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 04:31:53,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:31:53,315 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:53,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:53,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2066212398, now seen corresponding path program 1 times [2020-08-22 04:31:53,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:53,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477559658] [2020-08-22 04:31:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,611 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:53,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:31:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:31:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:31:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:31:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:31:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:31:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 04:31:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 04:31:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 04:31:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 04:31:53,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477559658] [2020-08-22 04:31:53,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:31:53,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:31:53,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391142648] [2020-08-22 04:31:53,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:31:53,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:53,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:31:53,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:31:53,880 INFO L87 Difference]: Start difference. First operand 367 states and 437 transitions. Second operand 12 states. [2020-08-22 04:31:54,538 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:54,773 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:55,004 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:55,547 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:55,814 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:56,048 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:31:56,740 INFO L93 Difference]: Finished difference Result 663 states and 818 transitions. [2020-08-22 04:31:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:31:56,740 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-22 04:31:56,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:31:56,744 INFO L225 Difference]: With dead ends: 663 [2020-08-22 04:31:56,744 INFO L226 Difference]: Without dead ends: 320 [2020-08-22 04:31:56,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:31:56,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-22 04:31:56,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 296. [2020-08-22 04:31:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-22 04:31:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 350 transitions. [2020-08-22 04:31:56,805 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 350 transitions. Word has length 109 [2020-08-22 04:31:56,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:31:56,805 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 350 transitions. [2020-08-22 04:31:56,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:31:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 350 transitions. [2020-08-22 04:31:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-22 04:31:56,808 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:31:56,808 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 04:31:56,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:31:56,808 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:31:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:31:56,809 INFO L82 PathProgramCache]: Analyzing trace with hash 147640793, now seen corresponding path program 1 times [2020-08-22 04:31:56,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:31:56,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090280539] [2020-08-22 04:31:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:31:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,125 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:31:57,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:31:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:31:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:31:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:31:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:31:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:31:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:31:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:31:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:31:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 04:31:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:31:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 04:31:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 04:31:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:31:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 04:31:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 04:31:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:31:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:31:57,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090280539] [2020-08-22 04:31:57,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:31:57,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:31:57,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514019786] [2020-08-22 04:31:57,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:31:57,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:31:57,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:31:57,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:31:57,286 INFO L87 Difference]: Start difference. First operand 296 states and 350 transitions. Second operand 12 states. [2020-08-22 04:31:57,689 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:31:58,442 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:31:58,921 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:31:59,183 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:59,415 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:31:59,664 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:31:59,924 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:00,172 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:01,071 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:01,346 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:01,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:01,820 INFO L93 Difference]: Finished difference Result 687 states and 875 transitions. [2020-08-22 04:32:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 04:32:01,821 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-22 04:32:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:01,826 INFO L225 Difference]: With dead ends: 687 [2020-08-22 04:32:01,826 INFO L226 Difference]: Without dead ends: 469 [2020-08-22 04:32:01,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2020-08-22 04:32:01,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-22 04:32:01,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 393. [2020-08-22 04:32:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-08-22 04:32:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 472 transitions. [2020-08-22 04:32:01,903 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 472 transitions. Word has length 113 [2020-08-22 04:32:01,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:01,903 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 472 transitions. [2020-08-22 04:32:01,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:32:01,904 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 472 transitions. [2020-08-22 04:32:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 04:32:01,906 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:01,907 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:01,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:32:01,907 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:01,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:01,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1088865250, now seen corresponding path program 2 times [2020-08-22 04:32:01,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:01,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309339234] [2020-08-22 04:32:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:32:01,972 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:32:01,972 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:32:01,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:32:02,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:32:02 BoogieIcfgContainer [2020-08-22 04:32:02,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:32:02,007 INFO L168 Benchmark]: Toolchain (without parser) took 31973.64 ms. Allocated memory was 141.0 MB in the beginning and 596.6 MB in the end (delta: 455.6 MB). Free memory was 101.9 MB in the beginning and 437.4 MB in the end (delta: -335.5 MB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:02,008 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:32:02,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.05 ms. Allocated memory was 141.0 MB in the beginning and 229.6 MB in the end (delta: 88.6 MB). Free memory was 101.7 MB in the beginning and 206.7 MB in the end (delta: -105.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:02,010 INFO L168 Benchmark]: Boogie Preprocessor took 93.61 ms. Allocated memory is still 229.6 MB. Free memory was 206.7 MB in the beginning and 203.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:02,010 INFO L168 Benchmark]: RCFGBuilder took 1195.55 ms. Allocated memory is still 229.6 MB. Free memory was 203.1 MB in the beginning and 116.3 MB in the end (delta: 86.8 MB). Peak memory consumption was 86.8 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:02,011 INFO L168 Benchmark]: TraceAbstraction took 30017.69 ms. Allocated memory was 229.6 MB in the beginning and 596.6 MB in the end (delta: 367.0 MB). Free memory was 116.3 MB in the beginning and 437.4 MB in the end (delta: -321.1 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:02,014 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 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.05 ms. Allocated memory was 141.0 MB in the beginning and 229.6 MB in the end (delta: 88.6 MB). Free memory was 101.7 MB in the beginning and 206.7 MB in the end (delta: -105.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.61 ms. Allocated memory is still 229.6 MB. Free memory was 206.7 MB in the beginning and 203.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1195.55 ms. Allocated memory is still 229.6 MB. Free memory was 203.1 MB in the beginning and 116.3 MB in the end (delta: 86.8 MB). Peak memory consumption was 86.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30017.69 ms. Allocated memory was 229.6 MB in the beginning and 596.6 MB in the end (delta: 367.0 MB). Free memory was 116.3 MB in the beginning and 437.4 MB in the end (delta: -321.1 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 869]: 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; [L406] int cleanupTimeShifts = 4; [L615] int waterLevel = 1; [L616] int methaneLevelCritical = 0; [L712] int pumpRunning = 0; [L713] int systemActive = 1; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L546] int splverifierCounter ; [L547] int tmp ; [L548] int tmp___0 ; [L549] int tmp___1 ; [L550] int tmp___2 ; [L553] splverifierCounter = 0 [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND TRUE \read(tmp) [L567] CALL waterRise() [L633] COND TRUE waterLevel < 2 [L634] waterLevel = waterLevel + 1 [L567] RET waterRise() [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND FALSE !(\read(pumpRunning)) [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND TRUE ! pumpRunning [L754] CALL, EXPR isHighWaterLevel() [L846] int retValue_acc ; [L847] int tmp ; [L848] int tmp___0 ; [L852] CALL, EXPR isHighWaterSensorDry() [L695] int retValue_acc ; [L698] COND FALSE !(waterLevel < 2) [L702] retValue_acc = 0 [L703] return (retValue_acc); [L852] RET, EXPR isHighWaterSensorDry() [L852] tmp = isHighWaterSensorDry() [L854] COND FALSE !(\read(tmp)) [L857] tmp___0 = 1 [L859] retValue_acc = tmp___0 [L860] return (retValue_acc); [L754] RET, EXPR isHighWaterLevel() [L754] tmp = isHighWaterLevel() [L756] COND TRUE \read(tmp) [L758] CALL activatePump() [L777] pumpRunning = 1 [L758] RET activatePump() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND TRUE tmp == 0 [L884] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L884] RET, EXPR isPumpRunning() [L884] tmp___0 = isPumpRunning() [L886] COND TRUE \read(tmp___0) [L888] CALL __automaton_fail() [L869] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.9s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 25.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 804 SDtfs, 1767 SDslu, 1087 SDs, 0 SdLazy, 5131 SolverSat, 1146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=393occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 337 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 203130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 66/76 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...