/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:33:28,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:33:28,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:33:28,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:33:28,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:33:28,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:33:28,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:33:28,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:33:28,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:33:28,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:33:28,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:33:28,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:33:28,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:33:28,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:33:28,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:33:28,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:33:28,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:33:28,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:33:28,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:33:28,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:33:28,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:33:28,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:33:28,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:33:28,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:33:28,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:33:28,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:33:28,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:33:28,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:33:28,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:33:28,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:33:28,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:33:28,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:33:28,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:33:28,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:33:28,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:33:28,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:33:28,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:33:28,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:33:28,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:33:28,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:33:28,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:33:28,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:33:28,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:33:28,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:33:28,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:33:28,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:33:28,748 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:33:28,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:33:28,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:33:28,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:33:28,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:33:28,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:33:28,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:33:28,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:33:28,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:33:28,750 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:33:28,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:33:28,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:33:28,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:33:28,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:33:28,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:33:28,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:33:28,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:33:28,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:33:28,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:33:28,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:33:28,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:33:28,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:33:28,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:33:28,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:33:28,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:33:28,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:33:29,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:33:29,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:33:29,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:33:29,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:33:29,094 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:33:29,095 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-08-18 22:33:29,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0b3943ef/3c6cad3d6932421c87e482b662c06f3c/FLAGdc28c857d [2020-08-18 22:33:29,758 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:33:29,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-08-18 22:33:29,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0b3943ef/3c6cad3d6932421c87e482b662c06f3c/FLAGdc28c857d [2020-08-18 22:33:30,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0b3943ef/3c6cad3d6932421c87e482b662c06f3c [2020-08-18 22:33:30,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:33:30,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:33:30,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:33:30,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:33:30,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:33:30,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:33:30" (1/1) ... [2020-08-18 22:33:30,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6833dace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:30, skipping insertion in model container [2020-08-18 22:33:30,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:33:30" (1/1) ... [2020-08-18 22:33:30,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:33:30,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:33:30,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:33:30,635 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:33:30,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:33:30,792 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:33:30,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:30 WrapperNode [2020-08-18 22:33:30,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:33:30,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:33:30,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:33:30,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:33:30,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:30" (1/1) ... [2020-08-18 22:33:30,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:30" (1/1) ... [2020-08-18 22:33:30,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:30" (1/1) ... [2020-08-18 22:33:30,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:30" (1/1) ... [2020-08-18 22:33:30,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:30" (1/1) ... [2020-08-18 22:33:30,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:30" (1/1) ... [2020-08-18 22:33:30,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:30" (1/1) ... [2020-08-18 22:33:30,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:33:30,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:33:30,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:33:30,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:33:30,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:30" (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 [2020-08-18 22:33:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:33:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:33:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:33:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:33:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:33:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:33:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:33:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:33:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:33:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:33:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:33:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:33:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:33:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:33:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:33:30,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:33:30,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:33:30,963 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:33:30,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:33:30,963 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 22:33:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 22:33:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:33:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:33:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:33:30,965 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:33:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:33:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:33:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:33:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:33:30,966 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:33:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:33:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:33:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:33:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:33:30,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:33:30,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:33:30,968 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:33:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:33:30,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 22:33:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:33:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:33:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:33:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:33:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:33:30,970 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:33:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:33:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:33:30,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:33:30,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:33:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:33:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:33:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:33:30,973 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:33:30,974 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:33:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:33:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:33:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:33:30,975 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:33:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:33:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 22:33:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 22:33:30,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 22:33:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:33:30,977 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:33:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:33:30,978 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:33:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:33:30,979 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:33:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:33:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:33:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:33:30,980 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:33:30,981 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:33:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:33:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:33:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:33:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:33:30,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:33:31,999 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:33:31,999 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:33:32,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:33:32 BoogieIcfgContainer [2020-08-18 22:33:32,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:33:32,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:33:32,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:33:32,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:33:32,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:33:30" (1/3) ... [2020-08-18 22:33:32,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12801162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:33:32, skipping insertion in model container [2020-08-18 22:33:32,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:30" (2/3) ... [2020-08-18 22:33:32,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12801162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:33:32, skipping insertion in model container [2020-08-18 22:33:32,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:33:32" (3/3) ... [2020-08-18 22:33:32,013 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product36.cil.c [2020-08-18 22:33:32,024 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:33:32,032 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:33:32,046 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:33:32,072 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:33:32,072 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:33:32,072 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:33:32,072 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:33:32,073 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:33:32,073 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:33:32,073 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:33:32,073 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:33:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-18 22:33:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 22:33:32,106 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:32,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:32,108 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:32,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:32,115 INFO L82 PathProgramCache]: Analyzing trace with hash -16432852, now seen corresponding path program 1 times [2020-08-18 22:33:32,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:32,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436391393] [2020-08-18 22:33:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:32,870 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:32,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:32,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:32,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:32,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:33:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:33:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:33:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:33,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436391393] [2020-08-18 22:33:33,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:33,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:33:33,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007936210] [2020-08-18 22:33:33,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:33:33,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:33,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:33:33,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:33:33,032 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-18 22:33:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:34,206 INFO L93 Difference]: Finished difference Result 290 states and 378 transitions. [2020-08-18 22:33:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:33:34,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 22:33:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:34,224 INFO L225 Difference]: With dead ends: 290 [2020-08-18 22:33:34,224 INFO L226 Difference]: Without dead ends: 157 [2020-08-18 22:33:34,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:33:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-18 22:33:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2020-08-18 22:33:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 22:33:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-18 22:33:34,324 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 52 [2020-08-18 22:33:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:34,324 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-18 22:33:34,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:33:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-18 22:33:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 22:33:34,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:34,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:34,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:33:34,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:34,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:34,330 INFO L82 PathProgramCache]: Analyzing trace with hash -687450637, now seen corresponding path program 1 times [2020-08-18 22:33:34,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:34,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36703778] [2020-08-18 22:33:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:34,661 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:34,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:34,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:33:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:34,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:33:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:33:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:34,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36703778] [2020-08-18 22:33:34,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:34,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:33:34,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798910755] [2020-08-18 22:33:34,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:33:34,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:34,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:33:34,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:33:34,710 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 4 states. [2020-08-18 22:33:35,124 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:33:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:35,878 INFO L93 Difference]: Finished difference Result 210 states and 255 transitions. [2020-08-18 22:33:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:33:35,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 22:33:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:35,882 INFO L225 Difference]: With dead ends: 210 [2020-08-18 22:33:35,883 INFO L226 Difference]: Without dead ends: 141 [2020-08-18 22:33:35,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:33:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-18 22:33:35,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-08-18 22:33:35,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-18 22:33:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2020-08-18 22:33:35,921 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 53 [2020-08-18 22:33:35,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:35,921 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2020-08-18 22:33:35,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:33:35,922 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2020-08-18 22:33:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 22:33:35,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:35,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:35,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:33:35,925 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:35,925 INFO L82 PathProgramCache]: Analyzing trace with hash 585649573, now seen corresponding path program 1 times [2020-08-18 22:33:35,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:35,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184519712] [2020-08-18 22:33:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,247 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:36,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:33:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:33:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 22:33:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:36,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184519712] [2020-08-18 22:33:36,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:36,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:33:36,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909475496] [2020-08-18 22:33:36,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:33:36,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:36,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:33:36,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:33:36,383 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand 8 states. [2020-08-18 22:33:36,790 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:37,098 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:37,357 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:37,621 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:38,384 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:33:40,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:40,118 INFO L93 Difference]: Finished difference Result 402 states and 494 transitions. [2020-08-18 22:33:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:33:40,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 22:33:40,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:40,126 INFO L225 Difference]: With dead ends: 402 [2020-08-18 22:33:40,126 INFO L226 Difference]: Without dead ends: 311 [2020-08-18 22:33:40,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:33:40,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-18 22:33:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 238. [2020-08-18 22:33:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 22:33:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 283 transitions. [2020-08-18 22:33:40,193 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 283 transitions. Word has length 58 [2020-08-18 22:33:40,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:40,193 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 283 transitions. [2020-08-18 22:33:40,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:33:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 283 transitions. [2020-08-18 22:33:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 22:33:40,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:40,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:40,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:33:40,197 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:40,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:40,197 INFO L82 PathProgramCache]: Analyzing trace with hash -107584034, now seen corresponding path program 1 times [2020-08-18 22:33:40,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:40,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441719667] [2020-08-18 22:33:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:40,540 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:40,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:40,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:40,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:40,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:33:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:40,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:33:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:40,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 22:33:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:40,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 22:33:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:40,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441719667] [2020-08-18 22:33:40,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:40,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:33:40,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171229992] [2020-08-18 22:33:40,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:33:40,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:40,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:33:40,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:33:40,631 INFO L87 Difference]: Start difference. First operand 238 states and 283 transitions. Second operand 8 states. [2020-08-18 22:33:41,079 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:42,376 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:42,699 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:43,001 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:43,247 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:43,904 INFO L93 Difference]: Finished difference Result 729 states and 953 transitions. [2020-08-18 22:33:43,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 22:33:43,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 22:33:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:43,912 INFO L225 Difference]: With dead ends: 729 [2020-08-18 22:33:43,913 INFO L226 Difference]: Without dead ends: 515 [2020-08-18 22:33:43,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:33:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-08-18 22:33:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 449. [2020-08-18 22:33:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-18 22:33:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 545 transitions. [2020-08-18 22:33:44,049 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 545 transitions. Word has length 63 [2020-08-18 22:33:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:44,050 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 545 transitions. [2020-08-18 22:33:44,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:33:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 545 transitions. [2020-08-18 22:33:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 22:33:44,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:44,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:44,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:33:44,056 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:44,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:44,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1291077628, now seen corresponding path program 1 times [2020-08-18 22:33:44,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:44,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560078313] [2020-08-18 22:33:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:44,321 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:44,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:44,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:44,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:44,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:44,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:33:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:44,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:33:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:44,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 22:33:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:44,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 22:33:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:44,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 22:33:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:44,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560078313] [2020-08-18 22:33:44,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:44,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:33:44,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035632893] [2020-08-18 22:33:44,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:33:44,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:44,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:33:44,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:33:44,408 INFO L87 Difference]: Start difference. First operand 449 states and 545 transitions. Second operand 6 states. [2020-08-18 22:33:44,733 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:46,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:46,402 INFO L93 Difference]: Finished difference Result 1117 states and 1430 transitions. [2020-08-18 22:33:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 22:33:46,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-18 22:33:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:46,409 INFO L225 Difference]: With dead ends: 1117 [2020-08-18 22:33:46,409 INFO L226 Difference]: Without dead ends: 692 [2020-08-18 22:33:46,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:33:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2020-08-18 22:33:46,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 639. [2020-08-18 22:33:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-08-18 22:33:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 776 transitions. [2020-08-18 22:33:46,548 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 776 transitions. Word has length 67 [2020-08-18 22:33:46,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:46,549 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 776 transitions. [2020-08-18 22:33:46,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:33:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 776 transitions. [2020-08-18 22:33:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 22:33:46,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:46,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:46,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:33:46,552 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1290048412, now seen corresponding path program 1 times [2020-08-18 22:33:46,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:46,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362750364] [2020-08-18 22:33:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:33:46,624 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:33:46,624 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:33:46,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:33:46,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:33:46 BoogieIcfgContainer [2020-08-18 22:33:46,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:33:46,653 INFO L168 Benchmark]: Toolchain (without parser) took 16547.70 ms. Allocated memory was 140.0 MB in the beginning and 488.6 MB in the end (delta: 348.7 MB). Free memory was 102.6 MB in the beginning and 191.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 259.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:46,654 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 22:33:46,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.10 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 169.5 MB in the end (delta: -67.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:46,656 INFO L168 Benchmark]: Boogie Preprocessor took 83.56 ms. Allocated memory is still 202.9 MB. Free memory was 169.5 MB in the beginning and 165.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:46,656 INFO L168 Benchmark]: RCFGBuilder took 1127.68 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 165.4 MB in the beginning and 194.8 MB in the end (delta: -29.3 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:46,657 INFO L168 Benchmark]: TraceAbstraction took 14644.94 ms. Allocated memory was 237.0 MB in the beginning and 488.6 MB in the end (delta: 251.7 MB). Free memory was 194.8 MB in the beginning and 191.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 255.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:33:46,661 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 686.10 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 169.5 MB in the end (delta: -67.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.56 ms. Allocated memory is still 202.9 MB. Free memory was 169.5 MB in the beginning and 165.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1127.68 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 165.4 MB in the beginning and 194.8 MB in the end (delta: -29.3 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14644.94 ms. Allocated memory was 237.0 MB in the beginning and 488.6 MB in the end (delta: 251.7 MB). Free memory was 194.8 MB in the beginning and 191.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 255.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L675] int waterLevel = 1; [L676] int methaneLevelCritical = 0; [L769] int cleanupTimeShifts = 4; [L845] int retValue_acc ; [L846] int tmp ; [L850] FCALL select_helpers() [L851] FCALL select_features() [L852] CALL, EXPR valid_product() [L894] int retValue_acc ; [L897] retValue_acc = 1 [L898] return (retValue_acc); [L852] RET, EXPR valid_product() [L852] tmp = valid_product() [L854] COND TRUE \read(tmp) [L856] FCALL setup() [L857] CALL runTest() [L836] CALL test() [L606] int splverifierCounter ; [L607] int tmp ; [L608] int tmp___0 ; [L609] int tmp___1 ; [L610] int tmp___2 ; [L613] splverifierCounter = 0 [L615] COND TRUE 1 [L617] COND TRUE splverifierCounter < 4 [L623] tmp = __VERIFIER_nondet_int() [L625] COND TRUE \read(tmp) [L627] CALL waterRise() [L693] COND TRUE waterLevel < 2 [L694] waterLevel = waterLevel + 1 [L627] RET waterRise() [L633] tmp___0 = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp___0)) [L643] tmp___2 = __VERIFIER_nondet_int() [L645] COND FALSE !(\read(tmp___2)) [L651] tmp___1 = __VERIFIER_nondet_int() [L653] COND TRUE \read(tmp___1) [L655] CALL stopSystem() [L582] COND FALSE !(\read(pumpRunning)) [L589] systemActive = 0 [L655] RET stopSystem() [L662] CALL timeShift() [L434] COND FALSE !(\read(pumpRunning)) [L441] COND FALSE !(\read(systemActive)) [L449] CALL __utac_acc__Specification3_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L906] int tmp___1 ; [L910] CALL, EXPR isMethaneLevelCritical() [L714] int retValue_acc ; [L717] retValue_acc = methaneLevelCritical [L718] return (retValue_acc); [L910] RET, EXPR isMethaneLevelCritical() [L910] tmp = isMethaneLevelCritical() [L912] COND FALSE !(\read(tmp)) [L916] CALL, EXPR getWaterLevel() [L746] int retValue_acc ; [L749] retValue_acc = waterLevel [L750] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp___0 = getWaterLevel() [L918] COND TRUE tmp___0 == 2 [L920] CALL, EXPR isPumpRunning() [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); [L920] RET, EXPR isPumpRunning() [L920] tmp___1 = isPumpRunning() [L922] COND FALSE !(\read(tmp___1)) [L926] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 576 SDtfs, 948 SDslu, 419 SDs, 0 SdLazy, 2132 SolverSat, 619 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=639occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 251 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...