/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:22:42,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:22:42,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:22:42,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:22:42,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:22:42,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:22:42,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:22:42,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:22:42,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:22:42,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:22:42,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:22:42,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:22:42,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:22:42,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:22:42,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:22:42,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:22:42,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:22:42,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:22:42,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:22:42,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:22:42,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:22:42,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:22:42,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:22:42,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:22:42,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:22:42,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:22:42,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:22:42,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:22:42,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:22:42,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:22:42,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:22:42,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:22:42,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:22:42,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:22:42,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:22:42,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:22:42,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:22:42,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:22:42,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:22:42,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:22:42,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:22:42,623 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 [2020-08-21 16:22:42,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:22:42,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:22:42,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:22:42,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:22:42,656 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:22:42,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:22:42,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:22:42,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:22:42,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:22:42,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:22:42,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:22:42,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:22:42,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:22:42,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:22:42,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:22:42,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:22:42,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:22:42,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:22:42,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:22:42,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:22:42,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:22:42,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:22:42,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:22:42,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:22:42,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:22:42,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:22:42,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:22:42,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:22:42,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:22:42,660 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:22:42,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:22:42,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:22:42,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:22:42,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:22:42,984 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:22:42,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-21 16:22:43,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84a5c0b59/64b95f7b13fd49e084afdee2b5781036/FLAGaa605cb5e [2020-08-21 16:22:43,562 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:22:43,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-21 16:22:43,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84a5c0b59/64b95f7b13fd49e084afdee2b5781036/FLAGaa605cb5e [2020-08-21 16:22:43,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84a5c0b59/64b95f7b13fd49e084afdee2b5781036 [2020-08-21 16:22:43,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:22:43,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:22:43,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:22:43,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:22:43,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:22:43,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:22:43" (1/1) ... [2020-08-21 16:22:43,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43, skipping insertion in model container [2020-08-21 16:22:43,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:22:43" (1/1) ... [2020-08-21 16:22:43,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:22:43,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:22:44,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:22:44,409 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:22:44,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:22:44,534 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:22:44,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:44 WrapperNode [2020-08-21 16:22:44,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:22:44,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:22:44,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:22:44,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:22:44,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:44" (1/1) ... [2020-08-21 16:22:44,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:44" (1/1) ... [2020-08-21 16:22:44,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:44" (1/1) ... [2020-08-21 16:22:44,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:44" (1/1) ... [2020-08-21 16:22:44,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:44" (1/1) ... [2020-08-21 16:22:44,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:44" (1/1) ... [2020-08-21 16:22:44,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:44" (1/1) ... [2020-08-21 16:22:44,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:22:44,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:22:44,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:22:44,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:22:44,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:44" (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 [2020-08-21 16:22:44,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:22:44,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:22:44,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:22:44,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:22:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:22:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:22:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:22:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:22:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:22:44,706 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:22:44,706 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:22:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:22:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:22:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:22:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:22:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:22:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-21 16:22:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-21 16:22:44,709 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-21 16:22:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-21 16:22:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-21 16:22:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-21 16:22:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:22:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-21 16:22:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-21 16:22:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:22:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:22:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:22:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:22:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:22:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:22:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 16:22:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 16:22:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 16:22:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:22:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:22:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:22:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:22:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 16:22:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:22:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:22:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:22:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:22:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:22:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:22:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:22:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:22:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 16:22:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:22:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:22:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:22:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:22:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:22:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:22:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:22:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:22:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:22:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:22:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:22:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:22:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:22:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:22:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:22:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:22:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:22:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:22:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:22:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:22:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:22:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:22:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:22:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:22:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:22:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:22:44,722 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:22:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:22:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:22:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:22:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:22:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:22:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:22:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 16:22:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 16:22:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:22:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:22:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:22:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:22:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 16:22:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:22:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:22:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:22:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 16:22:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:22:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-21 16:22:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:22:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-21 16:22:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-21 16:22:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 16:22:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-21 16:22:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-21 16:22:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:22:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-21 16:22:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-21 16:22:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-21 16:22:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:22:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:22:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:22:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:22:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:22:44,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:22:46,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:22:46,054 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:22:46,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:22:46 BoogieIcfgContainer [2020-08-21 16:22:46,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:22:46,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:22:46,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:22:46,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:22:46,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:22:43" (1/3) ... [2020-08-21 16:22:46,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c070d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:22:46, skipping insertion in model container [2020-08-21 16:22:46,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:44" (2/3) ... [2020-08-21 16:22:46,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c070d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:22:46, skipping insertion in model container [2020-08-21 16:22:46,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:22:46" (3/3) ... [2020-08-21 16:22:46,078 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_productSimulator.cil.c [2020-08-21 16:22:46,090 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:22:46,101 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:22:46,116 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:22:46,149 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:22:46,149 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:22:46,149 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:22:46,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:22:46,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:22:46,155 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:22:46,155 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:22:46,155 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:22:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-08-21 16:22:46,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 16:22:46,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:22:46,204 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:22:46,204 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:22:46,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:22:46,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1384301403, now seen corresponding path program 1 times [2020-08-21 16:22:46,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:22:46,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798715211] [2020-08-21 16:22:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:22:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,036 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 16:22:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:22:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:22:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:22:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:22:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:22:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:22:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:22:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:22:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 16:22:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:22:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:22:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:22:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 16:22:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 16:22:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 16:22:47,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798715211] [2020-08-21 16:22:47,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:22:47,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:22:47,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178043992] [2020-08-21 16:22:47,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:22:47,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:22:47,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:22:47,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:22:47,283 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 5 states. [2020-08-21 16:22:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:22:49,595 INFO L93 Difference]: Finished difference Result 448 states and 591 transitions. [2020-08-21 16:22:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:22:49,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-21 16:22:49,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:22:49,616 INFO L225 Difference]: With dead ends: 448 [2020-08-21 16:22:49,617 INFO L226 Difference]: Without dead ends: 254 [2020-08-21 16:22:49,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:22:49,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-21 16:22:49,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-21 16:22:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-21 16:22:49,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 252 transitions. [2020-08-21 16:22:49,750 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 252 transitions. Word has length 84 [2020-08-21 16:22:49,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:22:49,751 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 252 transitions. [2020-08-21 16:22:49,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:22:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 252 transitions. [2020-08-21 16:22:49,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-21 16:22:49,756 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:22:49,757 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:22:49,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:22:49,757 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:22:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:22:49,758 INFO L82 PathProgramCache]: Analyzing trace with hash 435784209, now seen corresponding path program 1 times [2020-08-21 16:22:49,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:22:49,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564097154] [2020-08-21 16:22:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:22:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,137 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 16:22:50,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:22:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:22:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:22:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:22:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:22:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:22:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:22:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:22:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 16:22:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:22:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:22:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 16:22:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 16:22:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 16:22:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 16:22:50,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564097154] [2020-08-21 16:22:50,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:22:50,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:22:50,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449147908] [2020-08-21 16:22:50,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:22:50,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:22:50,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:22:50,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:22:50,241 INFO L87 Difference]: Start difference. First operand 205 states and 252 transitions. Second operand 6 states. [2020-08-21 16:22:51,014 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 16:22:52,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:22:52,877 INFO L93 Difference]: Finished difference Result 372 states and 469 transitions. [2020-08-21 16:22:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:22:52,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-08-21 16:22:52,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:22:52,891 INFO L225 Difference]: With dead ends: 372 [2020-08-21 16:22:52,892 INFO L226 Difference]: Without dead ends: 238 [2020-08-21 16:22:52,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:22:52,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-21 16:22:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 196. [2020-08-21 16:22:52,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-08-21 16:22:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 240 transitions. [2020-08-21 16:22:52,947 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 240 transitions. Word has length 85 [2020-08-21 16:22:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:22:52,947 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 240 transitions. [2020-08-21 16:22:52,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:22:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 240 transitions. [2020-08-21 16:22:52,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 16:22:52,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:22:52,951 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:22:52,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:22:52,952 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:22:52,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:22:52,952 INFO L82 PathProgramCache]: Analyzing trace with hash 681264365, now seen corresponding path program 1 times [2020-08-21 16:22:52,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:22:52,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653550796] [2020-08-21 16:22:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:22:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,362 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 16:22:53,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:22:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:22:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:22:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:22:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:22:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:22:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:22:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:22:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 16:22:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:22:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:22:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 16:22:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 16:22:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:22:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 16:22:53,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653550796] [2020-08-21 16:22:53,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:22:53,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:22:53,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475050714] [2020-08-21 16:22:53,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:22:53,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:22:53,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:22:53,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:22:53,544 INFO L87 Difference]: Start difference. First operand 196 states and 240 transitions. Second operand 12 states. [2020-08-21 16:22:54,147 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 16:22:54,814 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-21 16:22:55,619 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-21 16:22:56,669 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 16:22:57,053 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 16:23:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:23:00,865 INFO L93 Difference]: Finished difference Result 643 states and 818 transitions. [2020-08-21 16:23:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 16:23:00,866 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2020-08-21 16:23:00,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:23:00,873 INFO L225 Difference]: With dead ends: 643 [2020-08-21 16:23:00,873 INFO L226 Difference]: Without dead ends: 488 [2020-08-21 16:23:00,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-21 16:23:00,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-21 16:23:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 397. [2020-08-21 16:23:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-21 16:23:00,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 497 transitions. [2020-08-21 16:23:00,984 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 497 transitions. Word has length 90 [2020-08-21 16:23:00,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:23:00,985 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 497 transitions. [2020-08-21 16:23:00,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:23:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 497 transitions. [2020-08-21 16:23:00,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 16:23:00,988 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:23:00,988 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:23:00,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:23:00,989 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:23:00,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:23:00,990 INFO L82 PathProgramCache]: Analyzing trace with hash -326319286, now seen corresponding path program 1 times [2020-08-21 16:23:00,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:23:00,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242104660] [2020-08-21 16:23:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:23:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,320 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 16:23:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:23:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:23:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:23:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:23:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:23:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:23:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:23:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:23:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 16:23:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:23:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:23:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 16:23:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 16:23:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:23:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 16:23:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 16:23:01,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242104660] [2020-08-21 16:23:01,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:23:01,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 16:23:01,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137560582] [2020-08-21 16:23:01,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:23:01,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:23:01,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:23:01,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:23:01,512 INFO L87 Difference]: Start difference. First operand 397 states and 497 transitions. Second operand 10 states. [2020-08-21 16:23:02,053 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 16:23:04,211 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 16:23:04,657 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 16:23:05,006 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-21 16:23:05,347 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 16:23:07,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:23:07,275 INFO L93 Difference]: Finished difference Result 1234 states and 1653 transitions. [2020-08-21 16:23:07,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:23:07,278 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-08-21 16:23:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:23:07,286 INFO L225 Difference]: With dead ends: 1234 [2020-08-21 16:23:07,286 INFO L226 Difference]: Without dead ends: 878 [2020-08-21 16:23:07,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-08-21 16:23:07,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-08-21 16:23:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 778. [2020-08-21 16:23:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-08-21 16:23:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 987 transitions. [2020-08-21 16:23:07,526 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 987 transitions. Word has length 96 [2020-08-21 16:23:07,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:23:07,527 INFO L479 AbstractCegarLoop]: Abstraction has 778 states and 987 transitions. [2020-08-21 16:23:07,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:23:07,527 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 987 transitions. [2020-08-21 16:23:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 16:23:07,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:23:07,531 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:23:07,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:23:07,532 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:23:07,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:23:07,532 INFO L82 PathProgramCache]: Analyzing trace with hash 635729360, now seen corresponding path program 1 times [2020-08-21 16:23:07,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:23:07,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191080493] [2020-08-21 16:23:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:23:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,870 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-21 16:23:07,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:23:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:23:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:23:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:23:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:23:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 16:23:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:23:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 16:23:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 16:23:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:23:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:23:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 16:23:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 16:23:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 16:23:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:07,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 16:23:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:08,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 16:23:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:23:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 16:23:08,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191080493] [2020-08-21 16:23:08,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:23:08,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:23:08,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504063577] [2020-08-21 16:23:08,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:23:08,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:23:08,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:23:08,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:23:08,021 INFO L87 Difference]: Start difference. First operand 778 states and 987 transitions. Second operand 8 states. [2020-08-21 16:23:08,646 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-21 16:23:12,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:23:12,417 INFO L93 Difference]: Finished difference Result 1840 states and 2490 transitions. [2020-08-21 16:23:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:23:12,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-08-21 16:23:12,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:23:12,426 INFO L225 Difference]: With dead ends: 1840 [2020-08-21 16:23:12,426 INFO L226 Difference]: Without dead ends: 1103 [2020-08-21 16:23:12,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-08-21 16:23:12,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-08-21 16:23:12,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1024. [2020-08-21 16:23:12,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-08-21 16:23:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1298 transitions. [2020-08-21 16:23:12,674 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1298 transitions. Word has length 100 [2020-08-21 16:23:12,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:23:12,676 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1298 transitions. [2020-08-21 16:23:12,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:23:12,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1298 transitions. [2020-08-21 16:23:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-21 16:23:12,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:23:12,680 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:23:12,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:23:12,680 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:23:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:23:12,681 INFO L82 PathProgramCache]: Analyzing trace with hash -950611836, now seen corresponding path program 1 times [2020-08-21 16:23:12,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:23:12,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052372615] [2020-08-21 16:23:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:23:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:23:12,805 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:23:12,805 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:23:12,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:23:12,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:23:12 BoogieIcfgContainer [2020-08-21 16:23:12,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:23:12,856 INFO L168 Benchmark]: Toolchain (without parser) took 28973.04 ms. Allocated memory was 138.9 MB in the beginning and 637.5 MB in the end (delta: 498.6 MB). Free memory was 100.9 MB in the beginning and 269.5 MB in the end (delta: -168.6 MB). Peak memory consumption was 330.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:23:12,858 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:23:12,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.04 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 167.7 MB in the end (delta: -67.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:23:12,864 INFO L168 Benchmark]: Boogie Preprocessor took 92.47 ms. Allocated memory is still 202.4 MB. Free memory was 167.7 MB in the beginning and 163.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:23:12,865 INFO L168 Benchmark]: RCFGBuilder took 1437.31 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 163.5 MB in the beginning and 182.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-21 16:23:12,866 INFO L168 Benchmark]: TraceAbstraction took 26783.47 ms. Allocated memory was 234.4 MB in the beginning and 637.5 MB in the end (delta: 403.2 MB). Free memory was 181.4 MB in the beginning and 269.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 315.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:23:12,878 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.04 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 167.7 MB in the end (delta: -67.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.47 ms. Allocated memory is still 202.4 MB. Free memory was 167.7 MB in the beginning and 163.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1437.31 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 163.5 MB in the beginning and 182.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26783.47 ms. Allocated memory was 234.4 MB in the beginning and 637.5 MB in the end (delta: 403.2 MB). Free memory was 181.4 MB in the beginning and 269.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 315.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1022]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L510] int __SELECTED_FEATURE_base ; [L511] int __SELECTED_FEATURE_highWaterSensor ; [L512] int __SELECTED_FEATURE_lowWaterSensor ; [L513] int __SELECTED_FEATURE_methaneQuery ; [L514] int __SELECTED_FEATURE_methaneAlarm ; [L515] int __SELECTED_FEATURE_stopCommand ; [L516] int __SELECTED_FEATURE_startCommand ; [L517] int __GUIDSL_ROOT_PRODUCTION ; [L605] int pumpRunning = 0; [L606] int systemActive = 1; [L1027] int waterLevel = 1; [L1028] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] CALL select_helpers() [L968] __GUIDSL_ROOT_PRODUCTION = 1 [L492] RET select_helpers() [L493] CALL select_features() [L953] __SELECTED_FEATURE_base = 1 [L954] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L954] RET, EXPR select_one() [L954] __SELECTED_FEATURE_highWaterSensor = select_one() [L955] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L955] RET, EXPR select_one() [L955] __SELECTED_FEATURE_lowWaterSensor = select_one() [L956] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L956] RET, EXPR select_one() [L956] __SELECTED_FEATURE_methaneQuery = select_one() [L957] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L957] RET, EXPR select_one() [L957] __SELECTED_FEATURE_methaneAlarm = select_one() [L958] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L958] RET, EXPR select_one() [L958] __SELECTED_FEATURE_stopCommand = select_one() [L959] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L959] RET, EXPR select_one() [L959] __SELECTED_FEATURE_startCommand = select_one() [L493] RET select_features() [L494] CALL, EXPR valid_product() [L973] int retValue_acc ; [L976] retValue_acc = __SELECTED_FEATURE_base [L977] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L521] int splverifierCounter ; [L522] int tmp ; [L523] int tmp___0 ; [L524] int tmp___1 ; [L525] int tmp___2 ; [L528] splverifierCounter = 0 [L530] COND TRUE 1 [L532] COND TRUE splverifierCounter < 4 [L538] tmp = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp) [L542] CALL waterRise() [L1045] COND TRUE waterLevel < 2 [L1046] waterLevel = waterLevel + 1 [L542] RET waterRise() [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___0)) [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND FALSE !(\read(tmp___2)) [L570] tmp___1 = __VERIFIER_nondet_int() [L572] COND TRUE \read(tmp___1) [L573] COND TRUE \read(__SELECTED_FEATURE_stopCommand) [L575] CALL stopSystem() [L917] COND FALSE !(\read(pumpRunning)) [L924] systemActive = 0 [L575] RET stopSystem() [L585] CALL timeShift() [L613] COND FALSE !(\read(pumpRunning)) [L620] COND FALSE !(\read(systemActive)) [L628] CALL __utac_acc__Specification3_spec__1() [L985] int tmp ; [L986] int tmp___0 ; [L987] int tmp___1 ; [L991] CALL, EXPR isMethaneLevelCritical() [L1066] int retValue_acc ; [L1069] retValue_acc = methaneLevelCritical [L1070] return (retValue_acc); [L991] RET, EXPR isMethaneLevelCritical() [L991] tmp = isMethaneLevelCritical() [L993] COND FALSE !(\read(tmp)) [L997] CALL, EXPR getWaterLevel() [L1098] int retValue_acc ; [L1101] retValue_acc = waterLevel [L1102] return (retValue_acc); [L997] RET, EXPR getWaterLevel() [L997] tmp___0 = getWaterLevel() [L999] COND TRUE tmp___0 == 2 [L1001] CALL, EXPR isPumpRunning() [L831] int retValue_acc ; [L834] retValue_acc = pumpRunning [L835] return (retValue_acc); [L1001] RET, EXPR isPumpRunning() [L1001] tmp___1 = isPumpRunning() [L1003] COND FALSE !(\read(tmp___1)) [L1007] CALL __automaton_fail() [L1022] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 301 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.6s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 22.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 846 SDtfs, 3115 SDslu, 268 SDs, 0 SdLazy, 4699 SolverSat, 2610 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1024occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 361 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 167384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 225/225 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...