/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:26:02,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:26:02,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:26:02,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:26:02,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:26:02,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:26:02,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:26:02,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:26:02,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:26:02,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:26:02,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:26:02,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:26:02,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:26:02,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:26:02,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:26:02,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:26:02,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:26:02,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:26:02,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:26:02,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:26:02,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:26:02,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:26:02,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:26:02,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:26:02,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:26:02,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:26:02,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:26:02,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:26:02,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:26:02,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:26:02,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:26:02,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:26:02,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:26:02,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:26:02,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:26:02,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:26:02,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:26:02,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:26:02,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:26:02,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:26:02,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:26:02,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 00:26:02,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:26:02,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:26:02,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:26:02,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:26:02,770 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:26:02,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:26:02,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:26:02,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:26:02,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:26:02,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:26:02,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:26:02,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:26:02,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:26:02,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:26:02,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:26:02,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:26:02,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:26:02,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:26:02,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:26:02,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:26:02,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:26:02,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:26:02,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:26:02,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:26:02,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:26:02,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:26:02,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:26:02,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:26:02,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:26:02,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:26:03,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:26:03,096 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:26:03,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:26:03,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:26:03,102 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:26:03,102 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-08-22 00:26:03,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62a48f669/f05b0f84615f4fa9b0f8020e57f0eee2/FLAG690c3d1b0 [2020-08-22 00:26:03,738 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:26:03,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2020-08-22 00:26:03,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62a48f669/f05b0f84615f4fa9b0f8020e57f0eee2/FLAG690c3d1b0 [2020-08-22 00:26:04,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62a48f669/f05b0f84615f4fa9b0f8020e57f0eee2 [2020-08-22 00:26:04,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:26:04,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:26:04,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:26:04,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:26:04,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:26:04,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:26:04" (1/1) ... [2020-08-22 00:26:04,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0619bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:04, skipping insertion in model container [2020-08-22 00:26:04,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:26:04" (1/1) ... [2020-08-22 00:26:04,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:26:04,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:26:04,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:26:04,489 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:26:04,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:26:04,608 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:26:04,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:04 WrapperNode [2020-08-22 00:26:04,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:26:04,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:26:04,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:26:04,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:26:04,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:04" (1/1) ... [2020-08-22 00:26:04,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:04" (1/1) ... [2020-08-22 00:26:04,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:04" (1/1) ... [2020-08-22 00:26:04,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:04" (1/1) ... [2020-08-22 00:26:04,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:04" (1/1) ... [2020-08-22 00:26:04,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:04" (1/1) ... [2020-08-22 00:26:04,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:04" (1/1) ... [2020-08-22 00:26:04,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:26:04,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:26:04,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:26:04,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:26:04,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:26:04,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:26:04,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:26:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:26:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:26:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:26:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:26:04,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:26:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:26:04,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:26:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 00:26:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:26:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:26:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:26:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:26:04,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:26:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:26:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:26:04,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:26:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:26:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:26:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:26:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:26:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:26:04,767 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:26:04,768 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 00:26:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:26:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 00:26:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:26:04,769 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:26:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:26:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:26:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:26:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 00:26:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 00:26:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:26:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:26:04,770 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:26:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:26:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:26:04,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 00:26:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:26:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:26:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:26:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:26:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:26:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:26:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:26:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:26:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:26:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 00:26:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:26:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:26:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:26:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:26:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:26:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:26:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:26:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:26:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:26:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:26:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:26:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:26:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:26:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:26:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:26:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:26:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:26:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:26:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:26:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:26:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:26:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:26:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:26:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:26:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:26:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:26:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:26:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:26:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 00:26:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:26:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:26:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:26:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 00:26:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:26:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:26:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 00:26:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 00:26:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:26:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 00:26:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:26:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:26:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:26:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:26:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:26:05,864 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:26:05,864 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:26:05,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:26:05 BoogieIcfgContainer [2020-08-22 00:26:05,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:26:05,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:26:05,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:26:05,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:26:05,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:26:04" (1/3) ... [2020-08-22 00:26:05,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde5aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:26:05, skipping insertion in model container [2020-08-22 00:26:05,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:26:04" (2/3) ... [2020-08-22 00:26:05,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde5aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:26:05, skipping insertion in model container [2020-08-22 00:26:05,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:26:05" (3/3) ... [2020-08-22 00:26:05,884 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product30.cil.c [2020-08-22 00:26:05,895 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:26:05,902 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:26:05,913 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:26:05,934 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:26:05,934 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:26:05,934 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:26:05,934 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:26:05,935 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:26:05,935 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:26:05,935 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:26:05,935 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:26:05,958 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-08-22 00:26:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:26:05,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:05,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:26:05,971 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:05,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:05,976 INFO L82 PathProgramCache]: Analyzing trace with hash -48518306, now seen corresponding path program 1 times [2020-08-22 00:26:05,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:05,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584798035] [2020-08-22 00:26:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:06,641 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:06,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:06,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:06,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:06,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:06,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:06,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:26:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:06,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:26:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:06,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:26:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:06,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584798035] [2020-08-22 00:26:06,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:06,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:26:06,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805724452] [2020-08-22 00:26:06,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:26:06,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:06,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:26:06,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:26:06,770 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 3 states. [2020-08-22 00:26:07,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:07,945 INFO L93 Difference]: Finished difference Result 300 states and 394 transitions. [2020-08-22 00:26:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:26:07,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 00:26:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:07,963 INFO L225 Difference]: With dead ends: 300 [2020-08-22 00:26:07,964 INFO L226 Difference]: Without dead ends: 162 [2020-08-22 00:26:07,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:26:07,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-22 00:26:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2020-08-22 00:26:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 00:26:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2020-08-22 00:26:08,068 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 52 [2020-08-22 00:26:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:08,069 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2020-08-22 00:26:08,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:26:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2020-08-22 00:26:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 00:26:08,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:08,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:26:08,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:26:08,074 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash 224052050, now seen corresponding path program 1 times [2020-08-22 00:26:08,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:08,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823035223] [2020-08-22 00:26:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,396 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:08,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:26:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:26:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:26:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:08,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823035223] [2020-08-22 00:26:08,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:08,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:26:08,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919917383] [2020-08-22 00:26:08,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:26:08,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:08,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:26:08,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:26:08,448 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand 4 states. [2020-08-22 00:26:08,835 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:26:09,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:09,688 INFO L93 Difference]: Finished difference Result 229 states and 281 transitions. [2020-08-22 00:26:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:26:09,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 00:26:09,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:09,692 INFO L225 Difference]: With dead ends: 229 [2020-08-22 00:26:09,692 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 00:26:09,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:26:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 00:26:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-22 00:26:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 00:26:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-22 00:26:09,727 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 53 [2020-08-22 00:26:09,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:09,727 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-22 00:26:09,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:26:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-22 00:26:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 00:26:09,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:09,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:26:09,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:26:09,730 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:09,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1519728538, now seen corresponding path program 1 times [2020-08-22 00:26:09,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:09,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670667417] [2020-08-22 00:26:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:10,110 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:10,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:10,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:10,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:10,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:26:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:10,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:26:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 00:26:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:10,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670667417] [2020-08-22 00:26:10,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:10,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:26:10,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254324141] [2020-08-22 00:26:10,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:26:10,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:10,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:26:10,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:26:10,189 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 8 states. [2020-08-22 00:26:10,558 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:10,909 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:11,165 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:11,412 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:12,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:12,620 INFO L93 Difference]: Finished difference Result 242 states and 299 transitions. [2020-08-22 00:26:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:26:12,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 00:26:12,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:12,624 INFO L225 Difference]: With dead ends: 242 [2020-08-22 00:26:12,624 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 00:26:12,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:26:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 00:26:12,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-22 00:26:12,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 00:26:12,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-08-22 00:26:12,658 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 58 [2020-08-22 00:26:12,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:12,659 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-08-22 00:26:12,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:26:12,659 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-08-22 00:26:12,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-22 00:26:12,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:12,662 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] [2020-08-22 00:26:12,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:26:12,663 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:12,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:12,663 INFO L82 PathProgramCache]: Analyzing trace with hash -531263457, now seen corresponding path program 1 times [2020-08-22 00:26:12,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:12,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784627082] [2020-08-22 00:26:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:12,989 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:26:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 00:26:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 00:26:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 00:26:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:13,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784627082] [2020-08-22 00:26:13,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:13,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:26:13,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826344959] [2020-08-22 00:26:13,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:26:13,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:13,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:26:13,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:26:13,120 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 8 states. [2020-08-22 00:26:13,484 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:15,084 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:15,374 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:15,633 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:26:16,010 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:16,403 INFO L93 Difference]: Finished difference Result 363 states and 474 transitions. [2020-08-22 00:26:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:26:16,404 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-08-22 00:26:16,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:16,408 INFO L225 Difference]: With dead ends: 363 [2020-08-22 00:26:16,408 INFO L226 Difference]: Without dead ends: 267 [2020-08-22 00:26:16,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:26:16,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-08-22 00:26:16,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 216. [2020-08-22 00:26:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-22 00:26:16,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-22 00:26:16,462 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 71 [2020-08-22 00:26:16,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:16,463 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-22 00:26:16,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:26:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-22 00:26:16,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 00:26:16,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:16,467 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] [2020-08-22 00:26:16,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:26:16,467 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:16,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1398757657, now seen corresponding path program 1 times [2020-08-22 00:26:16,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:16,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349861569] [2020-08-22 00:26:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,727 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:26:16,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:26:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:26:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:26:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:26:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:26:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 00:26:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:26:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:26:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 00:26:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 00:26:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-22 00:26:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:26:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:26:16,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349861569] [2020-08-22 00:26:16,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:26:16,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:26:16,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545909183] [2020-08-22 00:26:16,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:26:16,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:26:16,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:26:16,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:26:16,820 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 6 states. [2020-08-22 00:26:17,123 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:26:17,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:26:17,710 INFO L93 Difference]: Finished difference Result 348 states and 431 transitions. [2020-08-22 00:26:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:26:17,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-08-22 00:26:17,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:26:17,713 INFO L225 Difference]: With dead ends: 348 [2020-08-22 00:26:17,713 INFO L226 Difference]: Without dead ends: 156 [2020-08-22 00:26:17,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:26:17,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-22 00:26:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-08-22 00:26:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-22 00:26:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 158 transitions. [2020-08-22 00:26:17,747 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 158 transitions. Word has length 75 [2020-08-22 00:26:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:26:17,748 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 158 transitions. [2020-08-22 00:26:17,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:26:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 158 transitions. [2020-08-22 00:26:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 00:26:17,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:26:17,750 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] [2020-08-22 00:26:17,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:26:17,750 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:26:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:26:17,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1135016507, now seen corresponding path program 1 times [2020-08-22 00:26:17,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:26:17,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040667883] [2020-08-22 00:26:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:26:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:26:17,814 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:26:17,814 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:26:17,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:26:17,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:26:17 BoogieIcfgContainer [2020-08-22 00:26:17,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:26:17,844 INFO L168 Benchmark]: Toolchain (without parser) took 13819.24 ms. Allocated memory was 140.5 MB in the beginning and 477.1 MB in the end (delta: 336.6 MB). Free memory was 102.8 MB in the beginning and 212.0 MB in the end (delta: -109.3 MB). Peak memory consumption was 227.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:17,845 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 00:26:17,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 582.88 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 168.8 MB in the end (delta: -66.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:17,847 INFO L168 Benchmark]: Boogie Preprocessor took 84.77 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 164.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:17,847 INFO L168 Benchmark]: RCFGBuilder took 1179.57 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 164.5 MB in the beginning and 189.5 MB in the end (delta: -24.9 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:17,848 INFO L168 Benchmark]: TraceAbstraction took 11966.21 ms. Allocated memory was 235.4 MB in the beginning and 477.1 MB in the end (delta: 241.7 MB). Free memory was 189.5 MB in the beginning and 212.0 MB in the end (delta: -22.6 MB). Peak memory consumption was 219.1 MB. Max. memory is 7.1 GB. [2020-08-22 00:26:17,852 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 582.88 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 168.8 MB in the end (delta: -66.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.77 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 164.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1179.57 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 164.5 MB in the beginning and 189.5 MB in the end (delta: -24.9 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11966.21 ms. Allocated memory was 235.4 MB in the beginning and 477.1 MB in the end (delta: 241.7 MB). Free memory was 189.5 MB in the beginning and 212.0 MB in the end (delta: -22.6 MB). Peak memory consumption was 219.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 883]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L136] int cleanupTimeShifts = 4; [L407] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L675] int pumpRunning = 0; [L676] int systemActive = 1; [L215] int retValue_acc ; [L216] int tmp ; [L220] FCALL select_helpers() [L221] FCALL select_features() [L222] CALL, EXPR valid_product() [L914] int retValue_acc ; [L917] retValue_acc = 1 [L918] return (retValue_acc); [L222] RET, EXPR valid_product() [L222] tmp = valid_product() [L224] COND TRUE \read(tmp) [L226] FCALL setup() [L227] CALL runTest() [L206] CALL test() [L606] int splverifierCounter ; [L607] int tmp ; [L608] int tmp___0 ; [L609] int tmp___1 ; [L610] int tmp___2 ; [L613] splverifierCounter = 0 [L615] COND TRUE 1 [L617] COND TRUE splverifierCounter < 4 [L623] tmp = __VERIFIER_nondet_int() [L625] COND TRUE \read(tmp) [L627] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L627] RET waterRise() [L633] tmp___0 = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp___0)) [L643] tmp___2 = __VERIFIER_nondet_int() [L645] COND FALSE !(\read(tmp___2)) [L651] tmp___1 = __VERIFIER_nondet_int() [L653] COND TRUE \read(tmp___1) [L660] CALL timeShift() [L683] COND FALSE !(\read(pumpRunning)) [L690] COND TRUE \read(systemActive) [L692] CALL processEnvironment() [L738] int tmp ; [L741] COND FALSE !(\read(pumpRunning)) [L756] CALL processEnvironment__wrappee__methaneQuery() [L712] int tmp ; [L715] COND FALSE !(\read(pumpRunning)) [L730] FCALL processEnvironment__wrappee__base() [L756] RET processEnvironment__wrappee__methaneQuery() [L692] RET processEnvironment() [L698] CALL __utac_acc__Specification3_spec__1() [L924] int tmp ; [L925] int tmp___0 ; [L926] int tmp___1 ; [L930] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L930] RET, EXPR isMethaneLevelCritical() [L930] tmp = isMethaneLevelCritical() [L932] COND FALSE !(\read(tmp)) [L936] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L936] RET, EXPR getWaterLevel() [L936] tmp___0 = getWaterLevel() [L938] COND TRUE tmp___0 == 2 [L940] CALL, EXPR isPumpRunning() [L807] int retValue_acc ; [L810] retValue_acc = pumpRunning [L811] return (retValue_acc); [L940] RET, EXPR isPumpRunning() [L940] tmp___1 = isPumpRunning() [L942] COND FALSE !(\read(tmp___1)) [L946] CALL __automaton_fail() [L883] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 238 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 519 SDtfs, 796 SDslu, 266 SDs, 0 SdLazy, 1587 SolverSat, 533 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 149 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 384 NumberOfCodeBlocks, 384 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 304 ConstructedInterpolants, 0 QuantifiedInterpolants, 88076 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...