/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=NARROWEST --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 21:12:06,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:12:06,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:12:06,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:12:06,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:12:06,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:12:06,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:12:06,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:12:06,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:12:06,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:12:06,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:12:06,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:12:06,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:12:06,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:12:06,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:12:06,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:12:06,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:12:06,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:12:06,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:12:06,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:12:06,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:12:06,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:12:06,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:12:06,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:12:06,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:12:06,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:12:06,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:12:06,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:12:06,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:12:06,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:12:06,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:12:06,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:12:06,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:12:06,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:12:06,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:12:06,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:12:06,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:12:06,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:12:06,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:12:06,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:12:06,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:12:06,644 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 21:12:06,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:12:06,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:12:06,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:12:06,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:12:06,678 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:12:06,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:12:06,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:12:06,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:12:06,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:12:06,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:12:06,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:12:06,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:12:06,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:12:06,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:12:06,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:12:06,680 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:12:06,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:12:06,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:12:06,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:12:06,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:12:06,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:12:06,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:12:06,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:12:06,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:12:06,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:12:06,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:12:06,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:12:06,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:12:06,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:12:06,683 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=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:12:07,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:12:07,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:12:07,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:12:07,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:12:07,046 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:12:07,047 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-08-21 21:12:07,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aacd87195/9f5732072919479ebf5a890315ba624e/FLAG88522b6e6 [2020-08-21 21:12:07,674 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:12:07,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2020-08-21 21:12:07,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aacd87195/9f5732072919479ebf5a890315ba624e/FLAG88522b6e6 [2020-08-21 21:12:07,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aacd87195/9f5732072919479ebf5a890315ba624e [2020-08-21 21:12:07,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:12:07,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:12:07,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:12:07,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:12:07,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:12:07,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:12:07" (1/1) ... [2020-08-21 21:12:07,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b75509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:07, skipping insertion in model container [2020-08-21 21:12:07,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:12:07" (1/1) ... [2020-08-21 21:12:07,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:12:07,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:12:08,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:12:08,437 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:12:08,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:12:08,557 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:12:08,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:08 WrapperNode [2020-08-21 21:12:08,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:12:08,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:12:08,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:12:08,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:12:08,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:08" (1/1) ... [2020-08-21 21:12:08,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:08" (1/1) ... [2020-08-21 21:12:08,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:08" (1/1) ... [2020-08-21 21:12:08,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:08" (1/1) ... [2020-08-21 21:12:08,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:08" (1/1) ... [2020-08-21 21:12:08,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:08" (1/1) ... [2020-08-21 21:12:08,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:08" (1/1) ... [2020-08-21 21:12:08,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:12:08,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:12:08,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:12:08,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:12:08,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:08" (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 21:12:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:12:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:12:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:12:08,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:12:08,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:12:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:12:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:12:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:12:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:12:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:12:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:12:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 21:12:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:12:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:12:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:12:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:12:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:12:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:12:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 21:12:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:12:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:12:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:12:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:12:08,773 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:12:08,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:12:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:12:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:12:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 21:12:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:12:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:12:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:12:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:12:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:12:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 21:12:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:12:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:12:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:12:08,776 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:12:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:12:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:12:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:12:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:12:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:12:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:12:08,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:12:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:12:08,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:12:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:12:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:12:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:12:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:12:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:12:08,782 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:12:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:12:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:12:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:12:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:12:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:12:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:12:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:12:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:12:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 21:12:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:12:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:12:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:12:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:12:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:12:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 21:12:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:12:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:12:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 21:12:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 21:12:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:12:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:12:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:12:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:12:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:12:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:12:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:12:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:12:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:12:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:12:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:12:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:12:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:12:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:12:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:12:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:12:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:12:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:12:09,886 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:12:09,886 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:12:09,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:12:09 BoogieIcfgContainer [2020-08-21 21:12:09,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:12:09,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:12:09,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:12:09,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:12:09,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:12:07" (1/3) ... [2020-08-21 21:12:09,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1f399b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:12:09, skipping insertion in model container [2020-08-21 21:12:09,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:08" (2/3) ... [2020-08-21 21:12:09,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1f399b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:12:09, skipping insertion in model container [2020-08-21 21:12:09,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:12:09" (3/3) ... [2020-08-21 21:12:09,905 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2020-08-21 21:12:09,916 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:12:09,926 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:12:09,941 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:12:09,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:12:09,974 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:12:09,974 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:12:09,975 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:12:09,975 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:12:09,975 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:12:09,975 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:12:09,975 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:12:10,007 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-08-21 21:12:10,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:12:10,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:10,026 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 21:12:10,027 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:10,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:10,035 INFO L82 PathProgramCache]: Analyzing trace with hash -93036640, now seen corresponding path program 1 times [2020-08-21 21:12:10,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:10,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685570848] [2020-08-21 21:12:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:10,764 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:10,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:10,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:12:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:10,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:12:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:10,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:12:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:10,885 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 21:12:10,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685570848] [2020-08-21 21:12:10,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:10,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:12:10,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423438575] [2020-08-21 21:12:10,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:12:10,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:10,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:12:10,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:12:10,914 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 3 states. [2020-08-21 21:12:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:12,054 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2020-08-21 21:12:12,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:12:12,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 21:12:12,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:12,072 INFO L225 Difference]: With dead ends: 291 [2020-08-21 21:12:12,073 INFO L226 Difference]: Without dead ends: 157 [2020-08-21 21:12:12,078 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 21:12:12,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-21 21:12:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2020-08-21 21:12:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 21:12:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-08-21 21:12:12,194 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52 [2020-08-21 21:12:12,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:12,195 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-08-21 21:12:12,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:12:12,195 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-08-21 21:12:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 21:12:12,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:12,208 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 21:12:12,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:12:12,208 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:12,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:12,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1403357497, now seen corresponding path program 1 times [2020-08-21 21:12:12,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:12,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572176036] [2020-08-21 21:12:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:12,573 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:12,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:12,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:12,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:12,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:12:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:12,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:12:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:12:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:12,651 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 21:12:12,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572176036] [2020-08-21 21:12:12,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:12,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:12:12,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970670255] [2020-08-21 21:12:12,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:12:12,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:12,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:12:12,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:12:12,657 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states. [2020-08-21 21:12:13,051 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:12:13,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:13,913 INFO L93 Difference]: Finished difference Result 224 states and 275 transitions. [2020-08-21 21:12:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:12:13,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 21:12:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:13,917 INFO L225 Difference]: With dead ends: 224 [2020-08-21 21:12:13,917 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 21:12:13,919 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 21:12:13,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 21:12:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-21 21:12:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 21:12:13,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-21 21:12:13,960 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 53 [2020-08-21 21:12:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:13,961 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-21 21:12:13,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:12:13,961 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-21 21:12:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 21:12:13,963 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:13,963 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 21:12:13,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:12:13,964 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:13,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1713517472, now seen corresponding path program 1 times [2020-08-21 21:12:13,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:13,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050826134] [2020-08-21 21:12:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:14,297 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:14,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:14,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:14,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:14,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:14,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:12:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:14,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:12:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 21:12:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:14,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050826134] [2020-08-21 21:12:14,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:14,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:12:14,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352333375] [2020-08-21 21:12:14,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:12:14,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:14,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:12:14,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:12:14,413 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 8 states. [2020-08-21 21:12:14,786 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:15,080 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:15,333 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:15,569 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:16,634 INFO L93 Difference]: Finished difference Result 233 states and 289 transitions. [2020-08-21 21:12:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:12:16,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 21:12:16,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:16,638 INFO L225 Difference]: With dead ends: 233 [2020-08-21 21:12:16,638 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 21:12:16,639 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 21:12:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 21:12:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-21 21:12:16,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 21:12:16,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-08-21 21:12:16,674 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 57 [2020-08-21 21:12:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:16,675 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-08-21 21:12:16,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:12:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-08-21 21:12:16,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 21:12:16,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:16,677 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 21:12:16,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:12:16,677 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:16,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:16,678 INFO L82 PathProgramCache]: Analyzing trace with hash -949895556, now seen corresponding path program 1 times [2020-08-21 21:12:16,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:16,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126674988] [2020-08-21 21:12:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:16,986 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:16,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:17,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:17,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:17,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 21:12:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:12:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:17,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:12:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:17,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:12:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:17,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 21:12:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:17,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 21:12:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:17,128 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 21:12:17,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126674988] [2020-08-21 21:12:17,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:17,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:12:17,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832794878] [2020-08-21 21:12:17,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:12:17,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:17,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:12:17,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:12:17,133 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 8 states. [2020-08-21 21:12:17,524 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:19,018 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:19,297 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:19,515 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:19,906 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:20,270 INFO L93 Difference]: Finished difference Result 348 states and 456 transitions. [2020-08-21 21:12:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 21:12:20,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-08-21 21:12:20,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:20,276 INFO L225 Difference]: With dead ends: 348 [2020-08-21 21:12:20,276 INFO L226 Difference]: Without dead ends: 256 [2020-08-21 21:12:20,277 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 21:12:20,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-21 21:12:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2020-08-21 21:12:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-08-21 21:12:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions. [2020-08-21 21:12:20,336 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 70 [2020-08-21 21:12:20,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:20,337 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 250 transitions. [2020-08-21 21:12:20,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:12:20,337 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions. [2020-08-21 21:12:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 21:12:20,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:20,339 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 21:12:20,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:12:20,340 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:20,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:20,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1700935146, now seen corresponding path program 1 times [2020-08-21 21:12:20,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:20,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674485890] [2020-08-21 21:12:20,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:12:20,406 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:12:20,406 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:12:20,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:12:20,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:12:20 BoogieIcfgContainer [2020-08-21 21:12:20,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:12:20,436 INFO L168 Benchmark]: Toolchain (without parser) took 12512.54 ms. Allocated memory was 139.5 MB in the beginning and 413.7 MB in the end (delta: 274.2 MB). Free memory was 101.7 MB in the beginning and 230.8 MB in the end (delta: -129.1 MB). Peak memory consumption was 145.1 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:20,437 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 21:12:20,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.04 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 169.0 MB in the end (delta: -67.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:20,439 INFO L168 Benchmark]: Boogie Preprocessor took 123.39 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 164.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:20,440 INFO L168 Benchmark]: RCFGBuilder took 1213.55 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 164.6 MB in the beginning and 193.6 MB in the end (delta: -29.0 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:20,441 INFO L168 Benchmark]: TraceAbstraction took 10537.37 ms. Allocated memory was 235.9 MB in the beginning and 413.7 MB in the end (delta: 177.7 MB). Free memory was 193.6 MB in the beginning and 230.8 MB in the end (delta: -37.2 MB). Peak memory consumption was 140.5 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:20,445 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 633.04 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 169.0 MB in the end (delta: -67.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.39 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 164.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1213.55 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 164.6 MB in the beginning and 193.6 MB in the end (delta: -29.0 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10537.37 ms. Allocated memory was 235.9 MB in the beginning and 413.7 MB in the end (delta: 177.7 MB). Free memory was 193.6 MB in the beginning and 230.8 MB in the end (delta: -37.2 MB). Peak memory consumption was 140.5 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: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 438 SDtfs, 581 SDslu, 238 SDs, 0 SdLazy, 1453 SolverSat, 330 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s 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, 1.7s 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...