/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=DEEPEST --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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:23:41,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:23:41,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:23:41,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:23:41,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:23:41,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:23:41,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:23:41,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:23:41,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:23:41,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:23:41,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:23:41,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:23:41,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:23:41,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:23:41,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:23:41,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:23:41,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:23:41,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:23:41,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:23:41,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:23:41,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:23:41,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:23:41,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:23:41,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:23:41,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:23:41,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:23:41,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:23:41,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:23:41,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:23:41,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:23:41,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:23:41,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:23:41,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:23:41,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:23:41,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:23:41,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:23:41,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:23:41,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:23:41,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:23:41,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:23:41,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:23:41,630 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 20:23:41,651 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:23:41,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:23:41,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:23:41,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:23:41,653 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:23:41,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:23:41,653 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:23:41,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:23:41,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:23:41,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:23:41,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:23:41,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:23:41,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:23:41,655 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:23:41,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:23:41,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:23:41,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:23:41,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:23:41,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:23:41,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:23:41,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:23:41,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:23:41,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:23:41,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:23:41,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:23:41,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:23:41,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:23:41,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:23:41,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:23:41,658 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=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:23:41,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:23:41,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:23:41,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:23:41,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:23:41,991 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:23:41,991 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-08-21 20:23:42,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f19b0f95e/a4a77c1138fa4811ae7df0ad83a45555/FLAGbb07b3c42 [2020-08-21 20:23:42,608 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:23:42,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-08-21 20:23:42,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f19b0f95e/a4a77c1138fa4811ae7df0ad83a45555/FLAGbb07b3c42 [2020-08-21 20:23:42,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f19b0f95e/a4a77c1138fa4811ae7df0ad83a45555 [2020-08-21 20:23:42,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:23:42,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:23:42,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:23:42,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:23:42,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:23:42,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:23:42" (1/1) ... [2020-08-21 20:23:42,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:42, skipping insertion in model container [2020-08-21 20:23:42,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:23:42" (1/1) ... [2020-08-21 20:23:42,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:23:42,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:23:43,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:23:43,450 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:23:43,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:23:43,555 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:23:43,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43 WrapperNode [2020-08-21 20:23:43,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:23:43,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:23:43,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:23:43,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:23:43,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ... [2020-08-21 20:23:43,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ... [2020-08-21 20:23:43,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ... [2020-08-21 20:23:43,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ... [2020-08-21 20:23:43,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ... [2020-08-21 20:23:43,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ... [2020-08-21 20:23:43,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (1/1) ... [2020-08-21 20:23:43,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:23:43,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:23:43,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:23:43,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:23:43,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (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 20:23:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:23:43,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:23:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 20:23:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 20:23:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 20:23:43,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 20:23:43,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 20:23:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 20:23:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 20:23:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 20:23:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 20:23:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 20:23:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 20:23:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 20:23:43,745 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 20:23:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 20:23:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 20:23:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 20:23:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 20:23:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 20:23:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 20:23:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 20:23:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 20:23:43,747 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 20:23:43,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 20:23:43,748 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 20:23:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 20:23:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 20:23:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 20:23:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 20:23:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 20:23:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 20:23:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:23:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 20:23:43,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 20:23:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 20:23:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 20:23:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 20:23:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:23:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:23:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 20:23:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 20:23:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:23:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:23:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 20:23:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:23:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:23:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:23:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:23:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 20:23:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:23:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 20:23:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 20:23:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:23:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 20:23:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 20:23:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:23:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 20:23:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 20:23:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 20:23:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 20:23:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 20:23:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 20:23:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 20:23:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 20:23:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 20:23:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 20:23:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 20:23:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 20:23:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 20:23:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 20:23:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 20:23:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 20:23:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 20:23:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 20:23:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 20:23:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 20:23:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 20:23:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 20:23:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 20:23:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 20:23:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 20:23:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 20:23:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 20:23:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 20:23:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:23:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 20:23:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:23:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:23:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:23:44,798 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:23:44,798 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 20:23:44,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:23:44 BoogieIcfgContainer [2020-08-21 20:23:44,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:23:44,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:23:44,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:23:44,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:23:44,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:23:42" (1/3) ... [2020-08-21 20:23:44,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d693dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:23:44, skipping insertion in model container [2020-08-21 20:23:44,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:43" (2/3) ... [2020-08-21 20:23:44,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d693dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:23:44, skipping insertion in model container [2020-08-21 20:23:44,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:23:44" (3/3) ... [2020-08-21 20:23:44,812 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-08-21 20:23:44,822 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:23:44,830 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:23:44,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:23:44,869 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:23:44,869 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:23:44,869 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:23:44,869 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:23:44,870 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:23:44,870 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:23:44,870 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:23:44,870 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:23:44,895 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-08-21 20:23:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 20:23:44,907 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:44,908 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] [2020-08-21 20:23:44,908 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:44,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:44,915 INFO L82 PathProgramCache]: Analyzing trace with hash -93036640, now seen corresponding path program 1 times [2020-08-21 20:23:44,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:44,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370560595] [2020-08-21 20:23:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:45,629 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:45,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:45,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:45,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:45,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:45,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:23:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:45,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 20:23:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:45,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:23:45,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370560595] [2020-08-21 20:23:45,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:45,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 20:23:45,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432529286] [2020-08-21 20:23:45,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 20:23:45,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:45,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 20:23:45,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:23:45,754 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-08-21 20:23:46,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:46,909 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2020-08-21 20:23:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:23:46,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 20:23:46,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:46,931 INFO L225 Difference]: With dead ends: 291 [2020-08-21 20:23:46,931 INFO L226 Difference]: Without dead ends: 157 [2020-08-21 20:23:46,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:23:46,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-21 20:23:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2020-08-21 20:23:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 20:23:47,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-08-21 20:23:47,047 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52 [2020-08-21 20:23:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:47,047 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-08-21 20:23:47,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 20:23:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-08-21 20:23:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 20:23:47,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:47,053 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] [2020-08-21 20:23:47,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:23:47,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:47,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:47,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1403357497, now seen corresponding path program 1 times [2020-08-21 20:23:47,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:47,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107471154] [2020-08-21 20:23:47,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:47,402 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:47,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:47,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:47,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:47,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:47,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:23:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:47,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:23:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:47,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 20:23:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:23:47,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107471154] [2020-08-21 20:23:47,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:47,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:23:47,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590379913] [2020-08-21 20:23:47,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:23:47,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:47,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:23:47,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:23:47,455 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states. [2020-08-21 20:23:47,880 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:23:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:48,674 INFO L93 Difference]: Finished difference Result 224 states and 275 transitions. [2020-08-21 20:23:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:23:48,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 20:23:48,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:48,679 INFO L225 Difference]: With dead ends: 224 [2020-08-21 20:23:48,680 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 20:23:48,682 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 [2020-08-21 20:23:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 20:23:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-21 20:23:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 20:23:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-21 20:23:48,724 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 53 [2020-08-21 20:23:48,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:48,724 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-21 20:23:48,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:23:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-21 20:23:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 20:23:48,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:48,727 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] [2020-08-21 20:23:48,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:23:48,728 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:48,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:48,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1713517472, now seen corresponding path program 1 times [2020-08-21 20:23:48,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:48,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155673159] [2020-08-21 20:23:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:49,056 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:49,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:49,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:49,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:49,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:49,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:23:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:49,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:23:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:49,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:23:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:23:49,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155673159] [2020-08-21 20:23:49,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:49,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:23:49,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472713140] [2020-08-21 20:23:49,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:23:49,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:49,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:23:49,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:23:49,153 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 8 states. [2020-08-21 20:23:49,575 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:23:49,865 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:50,098 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:50,378 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:51,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:51,483 INFO L93 Difference]: Finished difference Result 233 states and 289 transitions. [2020-08-21 20:23:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 20:23:51,484 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 20:23:51,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:51,487 INFO L225 Difference]: With dead ends: 233 [2020-08-21 20:23:51,487 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 20:23:51,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 20:23:51,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 20:23:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-21 20:23:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 20:23:51,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-08-21 20:23:51,526 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 57 [2020-08-21 20:23:51,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:51,527 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-08-21 20:23:51,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:23:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-08-21 20:23:51,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 20:23:51,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:51,530 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] [2020-08-21 20:23:51,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:23:51,531 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:51,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:51,531 INFO L82 PathProgramCache]: Analyzing trace with hash -949895556, now seen corresponding path program 1 times [2020-08-21 20:23:51,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:51,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035379145] [2020-08-21 20:23:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,811 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 20:23:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:23:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 20:23:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:23:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 20:23:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 20:23:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:23:51,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035379145] [2020-08-21 20:23:51,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:51,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:23:51,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854985665] [2020-08-21 20:23:51,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:23:51,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:51,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:23:51,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:23:51,909 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 8 states. [2020-08-21 20:23:52,317 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:23:53,895 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:54,216 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:54,449 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:54,821 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:23:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:55,171 INFO L93 Difference]: Finished difference Result 348 states and 456 transitions. [2020-08-21 20:23:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 20:23:55,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-08-21 20:23:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:55,178 INFO L225 Difference]: With dead ends: 348 [2020-08-21 20:23:55,178 INFO L226 Difference]: Without dead ends: 256 [2020-08-21 20:23:55,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:23:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-21 20:23:55,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2020-08-21 20:23:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-08-21 20:23:55,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions. [2020-08-21 20:23:55,248 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 70 [2020-08-21 20:23:55,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:55,249 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 250 transitions. [2020-08-21 20:23:55,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:23:55,249 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions. [2020-08-21 20:23:55,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 20:23:55,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:55,253 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] [2020-08-21 20:23:55,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:23:55,254 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:55,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1700935146, now seen corresponding path program 1 times [2020-08-21 20:23:55,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:55,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985379622] [2020-08-21 20:23:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 20:23:55,323 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 20:23:55,324 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 20:23:55,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:23:55,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:23:55 BoogieIcfgContainer [2020-08-21 20:23:55,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:23:55,352 INFO L168 Benchmark]: Toolchain (without parser) took 12442.37 ms. Allocated memory was 137.9 MB in the beginning and 427.8 MB in the end (delta: 289.9 MB). Free memory was 99.7 MB in the beginning and 84.3 MB in the end (delta: 15.4 MB). Peak memory consumption was 305.3 MB. Max. memory is 7.1 GB. [2020-08-21 20:23:55,353 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 20:23:55,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.41 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 167.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-21 20:23:55,355 INFO L168 Benchmark]: Boogie Preprocessor took 104.25 ms. Allocated memory is still 200.8 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 20:23:55,356 INFO L168 Benchmark]: RCFGBuilder took 1142.36 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 163.5 MB in the beginning and 193.2 MB in the end (delta: -29.7 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-08-21 20:23:55,356 INFO L168 Benchmark]: TraceAbstraction took 10545.45 ms. Allocated memory was 231.2 MB in the beginning and 427.8 MB in the end (delta: 196.6 MB). Free memory was 193.2 MB in the beginning and 84.3 MB in the end (delta: 108.9 MB). Peak memory consumption was 305.5 MB. Max. memory is 7.1 GB. [2020-08-21 20:23:55,360 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 645.41 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 167.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.25 ms. Allocated memory is still 200.8 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 1142.36 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 163.5 MB in the beginning and 193.2 MB in the end (delta: -29.7 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10545.45 ms. Allocated memory was 231.2 MB in the beginning and 427.8 MB in the end (delta: 196.6 MB). Free memory was 193.2 MB in the beginning and 84.3 MB in the end (delta: 108.9 MB). Peak memory consumption was 305.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 598]: 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; [L415] int pumpRunning = 0; [L416] int systemActive = 1; [L672] int waterLevel = 1; [L673] int methaneLevelCritical = 0; [L761] int cleanupTimeShifts = 4; [L837] int retValue_acc ; [L838] int tmp ; [L842] FCALL select_helpers() [L843] FCALL select_features() [L844] CALL, EXPR valid_product() [L920] int retValue_acc ; [L923] retValue_acc = 1 [L924] return (retValue_acc); [L844] RET, EXPR valid_product() [L844] tmp = valid_product() [L846] COND TRUE \read(tmp) [L848] FCALL setup() [L849] CALL runTest() [L828] CALL test() [L607] int splverifierCounter ; [L608] int tmp ; [L609] int tmp___0 ; [L610] int tmp___1 ; [L611] int tmp___2 ; [L614] splverifierCounter = 0 [L616] COND TRUE 1 [L618] COND TRUE splverifierCounter < 4 [L624] tmp = __VERIFIER_nondet_int() [L626] COND TRUE \read(tmp) [L628] CALL waterRise() [L690] COND TRUE waterLevel < 2 [L691] waterLevel = waterLevel + 1 [L628] RET waterRise() [L634] tmp___0 = __VERIFIER_nondet_int() [L636] COND FALSE !(\read(tmp___0)) [L644] tmp___2 = __VERIFIER_nondet_int() [L646] COND TRUE \read(tmp___2) [L659] CALL timeShift() [L423] COND FALSE !(\read(pumpRunning)) [L430] COND TRUE \read(systemActive) [L432] CALL processEnvironment() [L478] int tmp ; [L481] COND FALSE !(\read(pumpRunning)) [L496] CALL processEnvironment__wrappee__lowWaterSensor() [L452] int tmp ; [L455] COND FALSE !(\read(pumpRunning)) [L470] FCALL processEnvironment__wrappee__base() [L496] RET processEnvironment__wrappee__lowWaterSensor() [L432] RET processEnvironment() [L438] CALL __utac_acc__Specification3_spec__1() [L861] int tmp ; [L862] int tmp___0 ; [L863] int tmp___1 ; [L867] CALL, EXPR isMethaneLevelCritical() [L711] int retValue_acc ; [L714] retValue_acc = methaneLevelCritical [L715] return (retValue_acc); [L867] RET, EXPR isMethaneLevelCritical() [L867] tmp = isMethaneLevelCritical() [L869] COND FALSE !(\read(tmp)) [L873] CALL, EXPR getWaterLevel() [L743] int retValue_acc ; [L746] retValue_acc = waterLevel [L747] return (retValue_acc); [L873] RET, EXPR getWaterLevel() [L873] tmp___0 = getWaterLevel() [L875] COND TRUE tmp___0 == 2 [L877] CALL, EXPR isPumpRunning() [L530] int retValue_acc ; [L533] retValue_acc = pumpRunning [L534] return (retValue_acc); [L877] RET, EXPR isPumpRunning() [L877] tmp___1 = isPumpRunning() [L879] COND FALSE !(\read(tmp___1)) [L883] CALL __automaton_fail() [L598] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 437 SDtfs, 581 SDslu, 236 SDs, 0 SdLazy, 1451 SolverSat, 331 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred 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, 4 MinimizatonAttempts, 130 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 63992 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...