/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:15:09,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:15:09,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:15:09,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:15:09,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:15:09,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:15:09,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:15:09,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:15:09,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:15:09,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:15:09,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:15:09,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:15:09,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:15:09,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:15:09,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:15:09,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:15:09,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:15:09,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:15:09,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:15:09,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:15:09,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:15:09,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:15:09,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:15:09,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:15:09,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:15:09,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:15:09,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:15:09,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:15:09,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:15:09,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:15:09,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:15:09,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:15:09,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:15:09,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:15:09,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:15:09,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:15:09,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:15:09,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:15:09,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:15:09,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:15:09,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:15:09,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 01:15:09,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:15:09,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:15:09,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:15:09,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:15:09,609 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:15:09,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:15:09,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:15:09,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:15:09,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:15:09,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:15:09,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:15:09,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:15:09,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:15:09,613 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:15:09,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:15:09,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:15:09,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:15:09,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:15:09,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:15:09,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:15:09,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:15:09,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:15:09,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:15:09,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:15:09,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:15:09,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:15:09,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:15:09,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:15:09,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:15:09,617 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:15:09,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:15:09,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:15:09,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:15:09,981 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:15:09,981 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:15:09,982 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2020-08-22 01:15:10,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c621fca04/403b03e5a3a54c3a840156eaf276ea6d/FLAG59e483b87 [2020-08-22 01:15:10,592 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:15:10,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2020-08-22 01:15:10,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c621fca04/403b03e5a3a54c3a840156eaf276ea6d/FLAG59e483b87 [2020-08-22 01:15:10,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c621fca04/403b03e5a3a54c3a840156eaf276ea6d [2020-08-22 01:15:10,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:15:10,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:15:10,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:15:10,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:15:10,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:15:10,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:15:10" (1/1) ... [2020-08-22 01:15:10,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63832a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:10, skipping insertion in model container [2020-08-22 01:15:10,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:15:10" (1/1) ... [2020-08-22 01:15:10,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:15:10,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:15:11,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:15:11,424 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:15:11,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:15:11,578 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:15:11,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:11 WrapperNode [2020-08-22 01:15:11,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:15:11,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:15:11,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:15:11,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:15:11,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:11" (1/1) ... [2020-08-22 01:15:11,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:11" (1/1) ... [2020-08-22 01:15:11,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:11" (1/1) ... [2020-08-22 01:15:11,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:11" (1/1) ... [2020-08-22 01:15:11,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:11" (1/1) ... [2020-08-22 01:15:11,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:11" (1/1) ... [2020-08-22 01:15:11,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:11" (1/1) ... [2020-08-22 01:15:11,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:15:11,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:15:11,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:15:11,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:15:11,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:15:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:15:11,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:15:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:15:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:15:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:15:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:15:11,775 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:15:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:15:11,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 01:15:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:15:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:15:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:15:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:15:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:15:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:15:11,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:15:11,779 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:15:11,779 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:15:11,779 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 01:15:11,780 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:15:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 01:15:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:15:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:15:11,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:15:11,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:15:11,784 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:15:11,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:15:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:15:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 01:15:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:15:11,785 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:15:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:15:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:15:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:15:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:15:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:15:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:15:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:15:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:15:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:15:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:15:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:15:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:15:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:15:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:15:11,789 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:15:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:15:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:15:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:15:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:15:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:15:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:15:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 01:15:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:15:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:15:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:15:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:15:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:15:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:15:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:15:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:15:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:15:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:15:11,793 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:15:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 01:15:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:15:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:15:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:15:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 01:15:11,794 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:15:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 01:15:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:15:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:15:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:15:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:15:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:15:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:15:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:15:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:15:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:15:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:15:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:15:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:15:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:15:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:15:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:15:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:15:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:15:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:15:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:15:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:15:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:15:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:15:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:15:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:15:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:15:13,049 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:15:13,050 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:15:13,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:15:13 BoogieIcfgContainer [2020-08-22 01:15:13,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:15:13,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:15:13,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:15:13,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:15:13,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:15:10" (1/3) ... [2020-08-22 01:15:13,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f06f68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:15:13, skipping insertion in model container [2020-08-22 01:15:13,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:15:11" (2/3) ... [2020-08-22 01:15:13,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f06f68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:15:13, skipping insertion in model container [2020-08-22 01:15:13,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:15:13" (3/3) ... [2020-08-22 01:15:13,064 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product48.cil.c [2020-08-22 01:15:13,076 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:15:13,085 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:15:13,100 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:15:13,127 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:15:13,127 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:15:13,127 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:15:13,128 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:15:13,128 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:15:13,128 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:15:13,128 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:15:13,128 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:15:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-22 01:15:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 01:15:13,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:15:13,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:15:13,166 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:15:13,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:15:13,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1986683117, now seen corresponding path program 1 times [2020-08-22 01:15:13,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:15:13,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117688469] [2020-08-22 01:15:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:15:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:13,880 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:15:13,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:15:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:13,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:15:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:15:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:13,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:15:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:13,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:15:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:15:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:13,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:15:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:13,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:15:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:15:13,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117688469] [2020-08-22 01:15:13,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:15:13,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:15:13,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633100771] [2020-08-22 01:15:13,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:15:13,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:15:13,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:15:13,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:15:13,998 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2020-08-22 01:15:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:15:15,275 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-08-22 01:15:15,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:15:15,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 01:15:15,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:15:15,292 INFO L225 Difference]: With dead ends: 338 [2020-08-22 01:15:15,292 INFO L226 Difference]: Without dead ends: 183 [2020-08-22 01:15:15,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:15:15,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-22 01:15:15,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2020-08-22 01:15:15,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 01:15:15,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-22 01:15:15,390 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2020-08-22 01:15:15,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:15:15,390 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-22 01:15:15,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:15:15,391 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-22 01:15:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 01:15:15,395 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:15:15,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:15:15,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:15:15,396 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:15:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:15:15,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1294331280, now seen corresponding path program 1 times [2020-08-22 01:15:15,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:15:15,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871550517] [2020-08-22 01:15:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:15:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,717 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:15:15,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:15:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:15:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:15:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:15:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:15:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:15:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:15:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 01:15:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:15:15,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871550517] [2020-08-22 01:15:15,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:15:15,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:15:15,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528017434] [2020-08-22 01:15:15,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:15:15,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:15:15,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:15:15,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:15:15,764 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 4 states. [2020-08-22 01:15:16,181 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:15:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:15:17,166 INFO L93 Difference]: Finished difference Result 261 states and 320 transitions. [2020-08-22 01:15:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:15:17,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 01:15:17,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:15:17,171 INFO L225 Difference]: With dead ends: 261 [2020-08-22 01:15:17,171 INFO L226 Difference]: Without dead ends: 167 [2020-08-22 01:15:17,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:15:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-22 01:15:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 137. [2020-08-22 01:15:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-22 01:15:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 161 transitions. [2020-08-22 01:15:17,219 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 161 transitions. Word has length 53 [2020-08-22 01:15:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:15:17,219 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 161 transitions. [2020-08-22 01:15:17,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:15:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 161 transitions. [2020-08-22 01:15:17,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 01:15:17,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:15:17,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:15:17,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:15:17,223 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:15:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:15:17,223 INFO L82 PathProgramCache]: Analyzing trace with hash 89991443, now seen corresponding path program 1 times [2020-08-22 01:15:17,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:15:17,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183897175] [2020-08-22 01:15:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:15:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,597 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:15:17,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:15:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:15:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:15:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:15:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:15:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:15:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:15:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 01:15:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:15:17,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183897175] [2020-08-22 01:15:17,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:15:17,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:15:17,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053481929] [2020-08-22 01:15:17,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:15:17,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:15:17,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:15:17,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:15:17,764 INFO L87 Difference]: Start difference. First operand 137 states and 161 transitions. Second operand 8 states. [2020-08-22 01:15:18,088 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:15:18,415 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:18,689 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:18,910 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:19,683 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:15:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:15:22,002 INFO L93 Difference]: Finished difference Result 476 states and 591 transitions. [2020-08-22 01:15:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:15:22,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 01:15:22,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:15:22,010 INFO L225 Difference]: With dead ends: 476 [2020-08-22 01:15:22,010 INFO L226 Difference]: Without dead ends: 363 [2020-08-22 01:15:22,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 01:15:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-08-22 01:15:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 294. [2020-08-22 01:15:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-22 01:15:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 357 transitions. [2020-08-22 01:15:22,152 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 357 transitions. Word has length 58 [2020-08-22 01:15:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:15:22,152 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 357 transitions. [2020-08-22 01:15:22,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:15:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 357 transitions. [2020-08-22 01:15:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 01:15:22,163 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:15:22,163 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] [2020-08-22 01:15:22,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:15:22,164 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:15:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:15:22,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1771452602, now seen corresponding path program 1 times [2020-08-22 01:15:22,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:15:22,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285471662] [2020-08-22 01:15:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:15:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:22,528 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:15:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:15:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:15:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:22,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:15:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:22,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:15:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:22,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:15:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:22,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:15:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:22,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:15:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:22,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:15:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:22,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 01:15:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:15:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:15:22,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285471662] [2020-08-22 01:15:22,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:15:22,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:15:22,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720877974] [2020-08-22 01:15:22,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:15:22,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:15:22,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:15:22,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:15:22,620 INFO L87 Difference]: Start difference. First operand 294 states and 357 transitions. Second operand 8 states. [2020-08-22 01:15:23,040 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:15:24,624 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:25,005 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:25,304 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:15:25,562 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:15:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:15:26,595 INFO L93 Difference]: Finished difference Result 913 states and 1199 transitions. [2020-08-22 01:15:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 01:15:26,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 01:15:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:15:26,604 INFO L225 Difference]: With dead ends: 913 [2020-08-22 01:15:26,605 INFO L226 Difference]: Without dead ends: 643 [2020-08-22 01:15:26,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 01:15:26,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-08-22 01:15:26,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 569. [2020-08-22 01:15:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-08-22 01:15:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 703 transitions. [2020-08-22 01:15:26,767 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 703 transitions. Word has length 63 [2020-08-22 01:15:26,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:15:26,768 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 703 transitions. [2020-08-22 01:15:26,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:15:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 703 transitions. [2020-08-22 01:15:26,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 01:15:26,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:15:26,777 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] [2020-08-22 01:15:26,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:15:26,778 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:15:26,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:15:26,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1282483756, now seen corresponding path program 1 times [2020-08-22 01:15:26,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:15:26,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155894123] [2020-08-22 01:15:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:15:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:15:26,848 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:15:26,849 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:15:26,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:15:26,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:15:26 BoogieIcfgContainer [2020-08-22 01:15:26,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:15:26,887 INFO L168 Benchmark]: Toolchain (without parser) took 16001.91 ms. Allocated memory was 138.9 MB in the beginning and 489.2 MB in the end (delta: 350.2 MB). Free memory was 101.5 MB in the beginning and 160.3 MB in the end (delta: -58.8 MB). Peak memory consumption was 291.5 MB. Max. memory is 7.1 GB. [2020-08-22 01:15:26,889 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 01:15:26,891 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.07 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.3 MB in the beginning and 170.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-22 01:15:26,898 INFO L168 Benchmark]: Boogie Preprocessor took 91.06 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 166.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-22 01:15:26,899 INFO L168 Benchmark]: RCFGBuilder took 1384.32 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 166.3 MB in the beginning and 196.8 MB in the end (delta: -30.4 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-08-22 01:15:26,899 INFO L168 Benchmark]: TraceAbstraction took 13828.20 ms. Allocated memory was 234.9 MB in the beginning and 489.2 MB in the end (delta: 254.3 MB). Free memory was 195.3 MB in the beginning and 160.3 MB in the end (delta: 35.0 MB). Peak memory consumption was 289.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:15:26,910 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.07 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.3 MB in the beginning and 170.6 MB in the end (delta: -69.3 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.06 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 166.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1384.32 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 166.3 MB in the beginning and 196.8 MB in the end (delta: -30.4 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13828.20 ms. Allocated memory was 234.9 MB in the beginning and 489.2 MB in the end (delta: 254.3 MB). Free memory was 195.3 MB in the beginning and 160.3 MB in the end (delta: 35.0 MB). Peak memory consumption was 289.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L129] int waterLevel = 1; [L130] int methaneLevelCritical = 0; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L447] int cleanupTimeShifts = 4; [L782] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L521] int retValue_acc ; [L522] int tmp ; [L526] FCALL select_helpers() [L527] FCALL select_features() [L528] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L528] RET, EXPR valid_product() [L528] tmp = valid_product() [L530] COND TRUE \read(tmp) [L532] FCALL setup() [L533] CALL runTest() [L515] CALL test() [L545] int splverifierCounter ; [L546] int tmp ; [L547] int tmp___0 ; [L548] int tmp___1 ; [L549] int tmp___2 ; [L552] splverifierCounter = 0 [L554] COND TRUE 1 [L556] COND TRUE splverifierCounter < 4 [L562] tmp = __VERIFIER_nondet_int() [L564] COND TRUE \read(tmp) [L566] CALL waterRise() [L147] COND TRUE waterLevel < 2 [L148] waterLevel = waterLevel + 1 [L566] RET waterRise() [L572] tmp___0 = __VERIFIER_nondet_int() [L574] COND FALSE !(\read(tmp___0)) [L582] tmp___2 = __VERIFIER_nondet_int() [L584] COND FALSE !(\read(tmp___2)) [L590] tmp___1 = __VERIFIER_nondet_int() [L592] COND TRUE \read(tmp___1) [L594] CALL stopSystem() [L427] COND FALSE !(\read(pumpRunning)) [L434] systemActive = 0 [L594] RET stopSystem() [L601] CALL timeShift() [L236] COND FALSE !(\read(pumpRunning)) [L243] COND FALSE !(\read(systemActive)) [L251] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L168] int retValue_acc ; [L171] retValue_acc = methaneLevelCritical [L172] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L200] int retValue_acc ; [L203] retValue_acc = waterLevel [L204] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L360] int retValue_acc ; [L363] retValue_acc = pumpRunning [L364] return (retValue_acc); [L107] RET, EXPR isPumpRunning() [L107] tmp___1 = isPumpRunning() [L109] COND FALSE !(\read(tmp___1)) [L113] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 558 SDtfs, 890 SDslu, 393 SDs, 0 SdLazy, 2136 SolverSat, 558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred 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: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 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...