/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_spec1_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:29:01,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:29:01,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:29:01,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:29:01,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:29:01,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:29:01,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:29:01,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:29:01,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:29:01,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:29:01,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:29:01,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:29:01,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:29:01,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:29:01,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:29:01,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:29:01,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:29:01,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:29:01,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:29:01,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:29:01,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:29:01,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:29:01,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:29:01,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:29:01,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:29:01,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:29:01,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:29:01,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:29:01,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:29:01,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:29:01,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:29:01,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:29:01,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:29:01,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:29:01,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:29:01,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:29:01,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:29:01,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:29:01,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:29:01,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:29:01,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:29:01,741 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 22:29:01,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:29:01,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:29:01,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:29:01,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:29:01,792 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:29:01,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:29:01,792 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:29:01,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:29:01,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:29:01,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:29:01,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:29:01,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:29:01,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:29:01,795 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:29:01,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:29:01,795 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:29:01,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:29:01,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:29:01,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:29:01,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:29:01,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:29:01,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:29:01,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:29:01,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:29:01,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:29:01,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:29:01,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:29:01,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:29:01,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:29:01,798 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 22:29:02,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:29:02,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:29:02,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:29:02,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:29:02,150 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:29:02,151 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-08-18 22:29:02,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8f3940f1/a6ecb71c307a40ffabb21145595d5d80/FLAG9b46180c1 [2020-08-18 22:29:02,783 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:29:02,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-08-18 22:29:02,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8f3940f1/a6ecb71c307a40ffabb21145595d5d80/FLAG9b46180c1 [2020-08-18 22:29:03,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8f3940f1/a6ecb71c307a40ffabb21145595d5d80 [2020-08-18 22:29:03,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:29:03,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:29:03,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:29:03,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:29:03,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:29:03,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:29:03" (1/1) ... [2020-08-18 22:29:03,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e77f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:03, skipping insertion in model container [2020-08-18 22:29:03,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:29:03" (1/1) ... [2020-08-18 22:29:03,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:29:03,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:29:03,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:29:03,612 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:29:03,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:29:03,726 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:29:03,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:03 WrapperNode [2020-08-18 22:29:03,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:29:03,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:29:03,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:29:03,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:29:03,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:03" (1/1) ... [2020-08-18 22:29:03,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:03" (1/1) ... [2020-08-18 22:29:03,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:03" (1/1) ... [2020-08-18 22:29:03,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:03" (1/1) ... [2020-08-18 22:29:03,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:03" (1/1) ... [2020-08-18 22:29:03,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:03" (1/1) ... [2020-08-18 22:29:03,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:03" (1/1) ... [2020-08-18 22:29:03,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:29:03,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:29:03,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:29:03,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:29:03,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:03" (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 22:29:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:29:03,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:29:03,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:29:03,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:29:03,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:29:03,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:29:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:29:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:29:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:29:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:29:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:29:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:29:03,903 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:29:03,903 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:29:03,903 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:29:03,903 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:29:03,903 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:29:03,903 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:29:03,904 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:29:03,904 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:29:03,904 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:29:03,904 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:29:03,904 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:29:03,904 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:29:03,904 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:29:03,905 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:29:03,905 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:29:03,905 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:29:03,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:29:03,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 22:29:03,905 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:29:03,906 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:29:03,906 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:29:03,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:29:03,906 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:29:03,906 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:29:03,906 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:29:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:29:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:29:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:29:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:29:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:29:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:29:03,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:29:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:29:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:29:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:29:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:29:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:29:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:29:03,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:29:03,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:29:03,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:29:03,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:29:03,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:29:03,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:29:03,909 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:29:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:29:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:29:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:29:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:29:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:29:03,910 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:29:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:29:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:29:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:29:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:29:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 22:29:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:29:03,911 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:29:03,912 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:29:03,912 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:29:03,912 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:29:03,912 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:29:03,912 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:29:03,912 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:29:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:29:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:29:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:29:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:29:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:29:03,913 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:29:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:29:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:29:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:29:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:29:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:29:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:29:05,034 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:29:05,035 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:29:05,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:29:05 BoogieIcfgContainer [2020-08-18 22:29:05,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:29:05,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:29:05,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:29:05,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:29:05,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:29:03" (1/3) ... [2020-08-18 22:29:05,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2087d3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:29:05, skipping insertion in model container [2020-08-18 22:29:05,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:29:03" (2/3) ... [2020-08-18 22:29:05,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2087d3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:29:05, skipping insertion in model container [2020-08-18 22:29:05,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:29:05" (3/3) ... [2020-08-18 22:29:05,049 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-08-18 22:29:05,059 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:29:05,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:29:05,082 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:29:05,105 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:29:05,105 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:29:05,105 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:29:05,105 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:29:05,106 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:29:05,106 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:29:05,106 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:29:05,106 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:29:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-08-18 22:29:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 22:29:05,139 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:05,140 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] [2020-08-18 22:29:05,140 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:05,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:05,147 INFO L82 PathProgramCache]: Analyzing trace with hash 936709255, now seen corresponding path program 1 times [2020-08-18 22:29:05,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:05,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362787430] [2020-08-18 22:29:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:05,829 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:05,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:05,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:05,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:05,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:05,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:05,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:29:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:05,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:29:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:05,980 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 22:29:05,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362787430] [2020-08-18 22:29:05,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:05,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:29:05,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374258323] [2020-08-18 22:29:05,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:29:05,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:06,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:29:06,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:29:06,007 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 3 states. [2020-08-18 22:29:07,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:07,099 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-18 22:29:07,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:29:07,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 22:29:07,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:07,119 INFO L225 Difference]: With dead ends: 249 [2020-08-18 22:29:07,119 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 22:29:07,125 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 [2020-08-18 22:29:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 22:29:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 22:29:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 22:29:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-18 22:29:07,220 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-18 22:29:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:07,221 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-18 22:29:07,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:29:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-18 22:29:07,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 22:29:07,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:07,225 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] [2020-08-18 22:29:07,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:29:07,225 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:07,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:07,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1814743517, now seen corresponding path program 1 times [2020-08-18 22:29:07,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:07,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009127414] [2020-08-18 22:29:07,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:07,561 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:07,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:07,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:07,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:07,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:07,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:29:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:07,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:29:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:07,602 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 22:29:07,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009127414] [2020-08-18 22:29:07,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:07,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:29:07,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337595913] [2020-08-18 22:29:07,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:29:07,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:07,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:29:07,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:29:07,606 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-18 22:29:08,006 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:08,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:08,556 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-18 22:29:08,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:29:08,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 22:29:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:08,559 INFO L225 Difference]: With dead ends: 182 [2020-08-18 22:29:08,559 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 22:29:08,561 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 [2020-08-18 22:29:08,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 22:29:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 22:29:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 22:29:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-18 22:29:08,593 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-18 22:29:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:08,593 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-18 22:29:08,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:29:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-18 22:29:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 22:29:08,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:08,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:08,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:29:08,596 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:08,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:08,597 INFO L82 PathProgramCache]: Analyzing trace with hash 268149636, now seen corresponding path program 1 times [2020-08-18 22:29:08,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:08,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005568207] [2020-08-18 22:29:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:08,905 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:08,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:08,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:08,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:08,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:09,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:29:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:09,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 22:29:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:09,019 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 22:29:09,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005568207] [2020-08-18 22:29:09,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:09,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:29:09,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064528600] [2020-08-18 22:29:09,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:29:09,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:09,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:29:09,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:29:09,023 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-18 22:29:09,359 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:09,682 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:09,927 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:10,180 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:11,073 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-18 22:29:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 22:29:11,077 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 22:29:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:11,078 INFO L225 Difference]: With dead ends: 191 [2020-08-18 22:29:11,079 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 22:29:11,080 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 [2020-08-18 22:29:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 22:29:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 22:29:11,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 22:29:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-18 22:29:11,111 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-18 22:29:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:11,111 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-18 22:29:11,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:29:11,112 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-18 22:29:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 22:29:11,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:11,113 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] [2020-08-18 22:29:11,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:29:11,114 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:11,114 INFO L82 PathProgramCache]: Analyzing trace with hash -169231603, now seen corresponding path program 1 times [2020-08-18 22:29:11,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:11,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806424269] [2020-08-18 22:29:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:11,388 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:11,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:11,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:11,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 22:29:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:11,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:29:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:11,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:29:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:11,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 22:29:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:11,461 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 22:29:11,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806424269] [2020-08-18 22:29:11,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:11,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:29:11,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129371917] [2020-08-18 22:29:11,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:29:11,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:11,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:29:11,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:29:11,464 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-18 22:29:11,747 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:12,812 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:13,223 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-18 22:29:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:29:13,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 22:29:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:13,228 INFO L225 Difference]: With dead ends: 274 [2020-08-18 22:29:13,229 INFO L226 Difference]: Without dead ends: 202 [2020-08-18 22:29:13,230 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 [2020-08-18 22:29:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-18 22:29:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-18 22:29:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-18 22:29:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-18 22:29:13,268 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-18 22:29:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:13,269 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-18 22:29:13,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:29:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-18 22:29:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 22:29:13,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:13,271 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] [2020-08-18 22:29:13,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:29:13,272 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:13,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:13,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1300839735, now seen corresponding path program 1 times [2020-08-18 22:29:13,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:13,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441719667] [2020-08-18 22:29:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,570 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 22:29:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:29:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:29:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 22:29:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 22:29:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:13,674 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 22:29:13,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441719667] [2020-08-18 22:29:13,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:13,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:29:13,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133551496] [2020-08-18 22:29:13,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:29:13,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:13,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:29:13,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:29:13,678 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 8 states. [2020-08-18 22:29:13,989 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:14,992 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:15,261 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:15,486 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:15,691 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:15,972 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:16,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:16,668 INFO L93 Difference]: Finished difference Result 478 states and 600 transitions. [2020-08-18 22:29:16,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:29:16,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-18 22:29:16,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:16,677 INFO L225 Difference]: With dead ends: 478 [2020-08-18 22:29:16,677 INFO L226 Difference]: Without dead ends: 341 [2020-08-18 22:29:16,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:29:16,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-08-18 22:29:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 277. [2020-08-18 22:29:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-08-18 22:29:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 320 transitions. [2020-08-18 22:29:16,750 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 320 transitions. Word has length 73 [2020-08-18 22:29:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:16,750 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 320 transitions. [2020-08-18 22:29:16,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:29:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 320 transitions. [2020-08-18 22:29:16,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 22:29:16,753 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:16,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:16,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:29:16,754 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:16,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:16,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2135215483, now seen corresponding path program 1 times [2020-08-18 22:29:16,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:16,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378615688] [2020-08-18 22:29:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,047 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:17,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 22:29:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:29:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:29:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:29:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 22:29:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 22:29:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:17,211 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 22:29:17,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378615688] [2020-08-18 22:29:17,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:17,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:29:17,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900502849] [2020-08-18 22:29:17,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:29:17,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:17,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:29:17,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:29:17,213 INFO L87 Difference]: Start difference. First operand 277 states and 320 transitions. Second operand 9 states. [2020-08-18 22:29:17,536 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:18,552 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:18,772 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:19,016 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:19,258 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:19,500 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:20,194 INFO L93 Difference]: Finished difference Result 380 states and 484 transitions. [2020-08-18 22:29:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 22:29:20,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-18 22:29:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:20,198 INFO L225 Difference]: With dead ends: 380 [2020-08-18 22:29:20,198 INFO L226 Difference]: Without dead ends: 377 [2020-08-18 22:29:20,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:29:20,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-08-18 22:29:20,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 277. [2020-08-18 22:29:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-08-18 22:29:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 319 transitions. [2020-08-18 22:29:20,257 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 319 transitions. Word has length 77 [2020-08-18 22:29:20,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:20,258 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 319 transitions. [2020-08-18 22:29:20,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:29:20,258 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 319 transitions. [2020-08-18 22:29:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 22:29:20,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:20,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:20,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:29:20,261 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:20,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:20,261 INFO L82 PathProgramCache]: Analyzing trace with hash 2125508241, now seen corresponding path program 1 times [2020-08-18 22:29:20,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:20,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62756177] [2020-08-18 22:29:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,580 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:20,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 22:29:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:29:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:29:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:29:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 22:29:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:29:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:20,697 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 22:29:20,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62756177] [2020-08-18 22:29:20,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:20,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:29:20,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429614703] [2020-08-18 22:29:20,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:29:20,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:20,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:29:20,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:29:20,700 INFO L87 Difference]: Start difference. First operand 277 states and 319 transitions. Second operand 9 states. [2020-08-18 22:29:21,484 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:29:21,712 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:29:21,937 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:22,157 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:22,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:22,895 INFO L93 Difference]: Finished difference Result 634 states and 793 transitions. [2020-08-18 22:29:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:29:22,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 22:29:22,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:22,900 INFO L225 Difference]: With dead ends: 634 [2020-08-18 22:29:22,900 INFO L226 Difference]: Without dead ends: 381 [2020-08-18 22:29:22,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:29:22,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-08-18 22:29:22,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 287. [2020-08-18 22:29:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-08-18 22:29:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 329 transitions. [2020-08-18 22:29:22,958 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 329 transitions. Word has length 78 [2020-08-18 22:29:22,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:22,958 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 329 transitions. [2020-08-18 22:29:22,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:29:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 329 transitions. [2020-08-18 22:29:22,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 22:29:22,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:22,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:22,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:29:22,961 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:22,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:22,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1616035151, now seen corresponding path program 1 times [2020-08-18 22:29:22,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:22,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004226939] [2020-08-18 22:29:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,228 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:23,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 22:29:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:29:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:29:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:29:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 22:29:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:29:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:23,368 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 22:29:23,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004226939] [2020-08-18 22:29:23,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:23,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 22:29:23,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238302476] [2020-08-18 22:29:23,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:29:23,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:23,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:29:23,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:29:23,370 INFO L87 Difference]: Start difference. First operand 287 states and 329 transitions. Second operand 11 states. [2020-08-18 22:29:23,777 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:24,004 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:24,239 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:24,833 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:25,092 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:25,347 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:29:26,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:26,242 INFO L93 Difference]: Finished difference Result 658 states and 831 transitions. [2020-08-18 22:29:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:29:26,242 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-08-18 22:29:26,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:26,245 INFO L225 Difference]: With dead ends: 658 [2020-08-18 22:29:26,245 INFO L226 Difference]: Without dead ends: 395 [2020-08-18 22:29:26,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:29:26,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-08-18 22:29:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 295. [2020-08-18 22:29:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-18 22:29:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 337 transitions. [2020-08-18 22:29:26,305 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 337 transitions. Word has length 78 [2020-08-18 22:29:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:26,306 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 337 transitions. [2020-08-18 22:29:26,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:29:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 337 transitions. [2020-08-18 22:29:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 22:29:26,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:26,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:26,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:29:26,308 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:26,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:26,309 INFO L82 PathProgramCache]: Analyzing trace with hash -394068690, now seen corresponding path program 1 times [2020-08-18 22:29:26,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:26,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426159408] [2020-08-18 22:29:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,576 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:29:26,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:29:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:29:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:29:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:29:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:29:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 22:29:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:29:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:29:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:29:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:29:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 22:29:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:29:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:29:26,686 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 22:29:26,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426159408] [2020-08-18 22:29:26,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:29:26,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:29:26,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582027994] [2020-08-18 22:29:26,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:29:26,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:29:26,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:29:26,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:29:26,688 INFO L87 Difference]: Start difference. First operand 295 states and 337 transitions. Second operand 7 states. [2020-08-18 22:29:26,985 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:27,479 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:29:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:29:29,108 INFO L93 Difference]: Finished difference Result 941 states and 1221 transitions. [2020-08-18 22:29:29,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 22:29:29,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-18 22:29:29,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:29:29,115 INFO L225 Difference]: With dead ends: 941 [2020-08-18 22:29:29,115 INFO L226 Difference]: Without dead ends: 670 [2020-08-18 22:29:29,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:29:29,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-18 22:29:29,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 571. [2020-08-18 22:29:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-18 22:29:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 679 transitions. [2020-08-18 22:29:29,257 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 679 transitions. Word has length 78 [2020-08-18 22:29:29,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:29:29,257 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 679 transitions. [2020-08-18 22:29:29,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:29:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 679 transitions. [2020-08-18 22:29:29,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 22:29:29,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:29:29,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:29:29,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:29:29,264 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:29:29,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:29:29,264 INFO L82 PathProgramCache]: Analyzing trace with hash 823271752, now seen corresponding path program 1 times [2020-08-18 22:29:29,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:29:29,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198853048] [2020-08-18 22:29:29,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:29:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:29:29,326 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:29:29,326 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:29:29,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:29:29,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:29:29 BoogieIcfgContainer [2020-08-18 22:29:29,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:29:29,372 INFO L168 Benchmark]: Toolchain (without parser) took 26264.68 ms. Allocated memory was 139.5 MB in the beginning and 597.7 MB in the end (delta: 458.2 MB). Free memory was 101.2 MB in the beginning and 355.1 MB in the end (delta: -253.8 MB). Peak memory consumption was 204.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:29:29,373 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 22:29:29,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 620.39 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 169.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:29:29,380 INFO L168 Benchmark]: Boogie Preprocessor took 91.25 ms. Allocated memory is still 202.4 MB. Free memory was 169.5 MB in the beginning and 165.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:29:29,381 INFO L168 Benchmark]: RCFGBuilder took 1221.16 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 164.8 MB in the beginning and 196.2 MB in the end (delta: -31.4 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:29:29,385 INFO L168 Benchmark]: TraceAbstraction took 24325.70 ms. Allocated memory was 235.4 MB in the beginning and 597.7 MB in the end (delta: 362.3 MB). Free memory was 196.2 MB in the beginning and 355.1 MB in the end (delta: -158.8 MB). Peak memory consumption was 203.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:29:29,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 620.39 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 169.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.25 ms. Allocated memory is still 202.4 MB. Free memory was 169.5 MB in the beginning and 165.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1221.16 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 164.8 MB in the beginning and 196.2 MB in the end (delta: -31.4 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24325.70 ms. Allocated memory was 235.4 MB in the beginning and 597.7 MB in the end (delta: 362.3 MB). Free memory was 196.2 MB in the beginning and 355.1 MB in the end (delta: -158.8 MB). Peak memory consumption was 203.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: 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; [L424] int pumpRunning = 0; [L425] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L756] int retValue_acc ; [L757] int tmp ; [L761] FCALL select_helpers() [L762] FCALL select_features() [L763] CALL, EXPR valid_product() [L674] int retValue_acc ; [L677] retValue_acc = 1 [L678] return (retValue_acc); [L763] RET, EXPR valid_product() [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) [L767] FCALL setup() [L768] CALL runTest() [L750] CALL test() [L581] int splverifierCounter ; [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L585] int tmp___2 ; [L588] splverifierCounter = 0 [L590] COND TRUE 1 [L592] COND TRUE splverifierCounter < 4 [L598] tmp = __VERIFIER_nondet_int() [L600] COND TRUE \read(tmp) [L602] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L602] RET waterRise() [L608] tmp___0 = __VERIFIER_nondet_int() [L610] COND TRUE \read(tmp___0) [L612] CALL changeMethaneLevel() [L836] COND FALSE !(\read(methaneLevelCritical)) [L839] methaneLevelCritical = 1 [L612] RET changeMethaneLevel() [L618] tmp___2 = __VERIFIER_nondet_int() [L620] COND TRUE \read(tmp___2) [L633] CALL timeShift() [L432] COND FALSE !(\read(pumpRunning)) [L439] COND TRUE \read(systemActive) [L441] CALL processEnvironment() [L461] int tmp ; [L464] COND TRUE ! pumpRunning [L466] CALL, EXPR isHighWaterLevel() [L558] int retValue_acc ; [L559] int tmp ; [L560] int tmp___0 ; [L564] CALL, EXPR isHighWaterSensorDry() [L886] int retValue_acc ; [L889] COND FALSE !(waterLevel < 2) [L893] retValue_acc = 0 [L894] return (retValue_acc); [L564] RET, EXPR isHighWaterSensorDry() [L564] tmp = isHighWaterSensorDry() [L566] COND FALSE !(\read(tmp)) [L569] tmp___0 = 1 [L571] retValue_acc = tmp___0 [L572] return (retValue_acc); [L466] RET, EXPR isHighWaterLevel() [L466] tmp = isHighWaterLevel() [L468] COND TRUE \read(tmp) [L470] CALL activatePump() [L489] pumpRunning = 1 [L470] RET activatePump() [L441] RET processEnvironment() [L447] CALL __utac_acc__Specification1_spec__1() [L780] int tmp ; [L781] int tmp___0 ; [L785] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L785] RET, EXPR isMethaneLevelCritical() [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L789] CALL, EXPR isPumpRunning() [L513] int retValue_acc ; [L516] retValue_acc = pumpRunning [L517] return (retValue_acc); [L789] RET, EXPR isPumpRunning() [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) [L793] CALL __automaton_fail() [L410] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 19.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 857 SDtfs, 1520 SDslu, 839 SDs, 0 SdLazy, 3988 SolverSat, 920 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 297 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=571occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 574 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 669 NumberOfCodeBlocks, 669 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 578 ConstructedInterpolants, 0 QuantifiedInterpolants, 173318 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...