/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=LOWLEXORDER --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 [2020-08-21 17:58:56,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:58:56,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:58:56,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:58:56,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:58:56,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:58:56,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:58:56,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:58:56,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:58:56,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:58:56,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:58:56,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:58:56,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:58:56,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:58:56,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:58:56,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:58:56,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:58:56,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:58:56,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:58:56,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:58:56,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:58:56,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:58:56,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:58:56,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:58:56,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:58:56,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:58:56,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:58:56,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:58:56,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:58:56,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:58:56,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:58:56,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:58:56,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:58:56,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:58:56,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:58:56,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:58:56,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:58:56,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:58:56,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:58:56,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:58:56,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:58:56,511 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 17:58:56,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:58:56,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:58:56,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:58:56,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:58:56,536 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:58:56,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:58:56,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:58:56,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:58:56,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:58:56,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:58:56,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:58:56,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:58:56,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:58:56,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:58:56,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:58:56,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:58:56,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:58:56,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:58:56,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:58:56,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:58:56,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:58:56,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:58:56,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:58:56,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:58:56,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:58:56,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:58:56,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:58:56,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:58:56,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:58:56,541 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 17:58:56,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:58:56,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:58:56,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:58:56,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:58:56,846 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:58:56,846 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2020-08-21 17:58:56,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa7ecd9d5/c82aba4454b3463d9c1a9d2045fb19ca/FLAG892f6e4e8 [2020-08-21 17:58:57,473 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:58:57,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2020-08-21 17:58:57,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa7ecd9d5/c82aba4454b3463d9c1a9d2045fb19ca/FLAG892f6e4e8 [2020-08-21 17:58:57,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa7ecd9d5/c82aba4454b3463d9c1a9d2045fb19ca [2020-08-21 17:58:57,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:58:57,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:58:57,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:58:57,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:58:57,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:58:57,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:58:57" (1/1) ... [2020-08-21 17:58:57,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc704b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:57, skipping insertion in model container [2020-08-21 17:58:57,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:58:57" (1/1) ... [2020-08-21 17:58:57,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:58:57,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:58:58,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:58:58,341 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:58:58,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:58:58,532 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:58:58,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:58 WrapperNode [2020-08-21 17:58:58,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:58:58,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:58:58,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:58:58,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:58:58,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:58" (1/1) ... [2020-08-21 17:58:58,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:58" (1/1) ... [2020-08-21 17:58:58,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:58" (1/1) ... [2020-08-21 17:58:58,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:58" (1/1) ... [2020-08-21 17:58:58,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:58" (1/1) ... [2020-08-21 17:58:58,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:58" (1/1) ... [2020-08-21 17:58:58,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:58" (1/1) ... [2020-08-21 17:58:58,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:58:58,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:58:58,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:58:58,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:58:58,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:58" (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 17:58:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:58:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:58:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:58:58,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:58:58,749 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:58:58,749 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:58:58,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:58:58,751 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:58:58,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:58:58,752 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:58:58,752 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:58:58,752 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:58:58,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:58:58,753 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:58:58,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:58:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:58:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:58:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:58:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 17:58:58,755 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:58:58,756 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:58:58,756 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:58:58,756 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:58:58,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:58:58,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:58:58,756 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:58:58,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:58:58,756 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 17:58:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:58:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:58:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:58:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:58:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:58:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:58:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:58:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:58:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:58:58,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:58:58,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:58:58,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:58:58,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:58:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:58:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:58:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:58:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:58:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:58:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:58:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:58:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:58:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:58:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:58:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:58:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:58:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:58:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:58:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:58:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:58:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:58:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:58:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:58:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:58:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:58:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:58:58,764 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 17:58:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:58:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:58:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:58:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:58:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 17:58:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:58:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:58:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:58:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:58:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:58:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:58:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:58:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:58:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:58:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:58:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:58:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:58:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:58:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:58:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:58:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:58:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:58:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:58:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:58:58,773 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:58:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:58:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:58:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:58:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:58:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:58:58,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:58:58,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:58:59,944 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:58:59,944 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:58:59,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:58:59 BoogieIcfgContainer [2020-08-21 17:58:59,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:58:59,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:58:59,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:58:59,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:58:59,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:58:57" (1/3) ... [2020-08-21 17:58:59,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786ee1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:58:59, skipping insertion in model container [2020-08-21 17:58:59,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:58:58" (2/3) ... [2020-08-21 17:58:59,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786ee1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:58:59, skipping insertion in model container [2020-08-21 17:58:59,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:58:59" (3/3) ... [2020-08-21 17:58:59,958 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product48.cil.c [2020-08-21 17:58:59,969 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:58:59,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:58:59,991 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:59:00,016 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:59:00,017 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:59:00,017 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:59:00,017 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:59:00,017 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:59:00,018 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:59:00,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:59:00,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:59:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-21 17:59:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:59:00,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:00,054 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 17:59:00,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:00,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:00,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1986683117, now seen corresponding path program 1 times [2020-08-21 17:59:00,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:00,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496521400] [2020-08-21 17:59:00,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,804 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:00,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:59:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:59:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:59:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:00,885 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 17:59:00,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496521400] [2020-08-21 17:59:00,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:00,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:59:00,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257365752] [2020-08-21 17:59:00,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:59:00,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:00,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:59:00,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:59:00,917 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2020-08-21 17:59:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:02,233 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-08-21 17:59:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:59:02,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 17:59:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:02,251 INFO L225 Difference]: With dead ends: 338 [2020-08-21 17:59:02,251 INFO L226 Difference]: Without dead ends: 183 [2020-08-21 17:59:02,257 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 17:59:02,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-21 17:59:02,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2020-08-21 17:59:02,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-21 17:59:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-21 17:59:02,356 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2020-08-21 17:59:02,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:02,356 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-21 17:59:02,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:59:02,357 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-21 17:59:02,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 17:59:02,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:02,361 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 17:59:02,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:59:02,362 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:02,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:02,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1294331280, now seen corresponding path program 1 times [2020-08-21 17:59:02,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:02,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36730363] [2020-08-21 17:59:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:02,760 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:02,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:02,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:02,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:02,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:02,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:59:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:02,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:59:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:02,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:59:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:02,806 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 17:59:02,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36730363] [2020-08-21 17:59:02,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:02,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:59:02,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345750248] [2020-08-21 17:59:02,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:59:02,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:02,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:59:02,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:59:02,811 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 4 states. [2020-08-21 17:59:03,226 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:04,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:04,218 INFO L93 Difference]: Finished difference Result 261 states and 320 transitions. [2020-08-21 17:59:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:59:04,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 17:59:04,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:04,223 INFO L225 Difference]: With dead ends: 261 [2020-08-21 17:59:04,226 INFO L226 Difference]: Without dead ends: 167 [2020-08-21 17:59:04,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:59:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-21 17:59:04,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 137. [2020-08-21 17:59:04,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-21 17:59:04,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 161 transitions. [2020-08-21 17:59:04,270 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 161 transitions. Word has length 53 [2020-08-21 17:59:04,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:04,270 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 161 transitions. [2020-08-21 17:59:04,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:59:04,271 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 161 transitions. [2020-08-21 17:59:04,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 17:59:04,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:04,274 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] [2020-08-21 17:59:04,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:59:04,274 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:04,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:04,275 INFO L82 PathProgramCache]: Analyzing trace with hash 89991443, now seen corresponding path program 1 times [2020-08-21 17:59:04,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:04,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567190741] [2020-08-21 17:59:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:04,619 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:04,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:04,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:04,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:04,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:04,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:59:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:04,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:59:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:04,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 17:59:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:04,737 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 17:59:04,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567190741] [2020-08-21 17:59:04,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:04,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:59:04,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668697490] [2020-08-21 17:59:04,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:59:04,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:04,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:59:04,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:59:04,741 INFO L87 Difference]: Start difference. First operand 137 states and 161 transitions. Second operand 8 states. [2020-08-21 17:59:05,108 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:05,410 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:05,694 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:05,922 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:06,658 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:59:08,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:08,750 INFO L93 Difference]: Finished difference Result 476 states and 591 transitions. [2020-08-21 17:59:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:59:08,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 17:59:08,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:08,760 INFO L225 Difference]: With dead ends: 476 [2020-08-21 17:59:08,760 INFO L226 Difference]: Without dead ends: 363 [2020-08-21 17:59:08,762 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 [2020-08-21 17:59:08,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-08-21 17:59:08,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 294. [2020-08-21 17:59:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 17:59:08,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 357 transitions. [2020-08-21 17:59:08,850 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 357 transitions. Word has length 58 [2020-08-21 17:59:08,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:08,850 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 357 transitions. [2020-08-21 17:59:08,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:59:08,851 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 357 transitions. [2020-08-21 17:59:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 17:59:08,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:08,854 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] [2020-08-21 17:59:08,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:59:08,854 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1771452602, now seen corresponding path program 1 times [2020-08-21 17:59:08,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:08,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238353733] [2020-08-21 17:59:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,219 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:59:09,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:59:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:59:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:59:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:59:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:59:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:59:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:59:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 17:59:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 17:59:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:59:09,337 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 17:59:09,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238353733] [2020-08-21 17:59:09,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:59:09,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:59:09,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090396387] [2020-08-21 17:59:09,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:59:09,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:59:09,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:59:09,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:59:09,340 INFO L87 Difference]: Start difference. First operand 294 states and 357 transitions. Second operand 8 states. [2020-08-21 17:59:09,684 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:11,030 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:11,375 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:11,638 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:59:11,869 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:59:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:59:12,832 INFO L93 Difference]: Finished difference Result 913 states and 1199 transitions. [2020-08-21 17:59:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 17:59:12,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 17:59:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:59:12,845 INFO L225 Difference]: With dead ends: 913 [2020-08-21 17:59:12,846 INFO L226 Difference]: Without dead ends: 643 [2020-08-21 17:59:12,849 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 [2020-08-21 17:59:12,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-08-21 17:59:12,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 569. [2020-08-21 17:59:12,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-08-21 17:59:12,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 703 transitions. [2020-08-21 17:59:12,996 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 703 transitions. Word has length 63 [2020-08-21 17:59:12,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:59:12,997 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 703 transitions. [2020-08-21 17:59:12,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:59:12,997 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 703 transitions. [2020-08-21 17:59:13,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 17:59:13,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:59:13,001 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] [2020-08-21 17:59:13,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:59:13,001 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:59:13,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:59:13,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1282483756, now seen corresponding path program 1 times [2020-08-21 17:59:13,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:59:13,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420855526] [2020-08-21 17:59:13,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:59:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:59:13,061 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:59:13,061 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:59:13,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:59:13,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:59:13 BoogieIcfgContainer [2020-08-21 17:59:13,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:59:13,089 INFO L168 Benchmark]: Toolchain (without parser) took 15301.24 ms. Allocated memory was 138.4 MB in the beginning and 503.3 MB in the end (delta: 364.9 MB). Free memory was 100.3 MB in the beginning and 208.2 MB in the end (delta: -107.9 MB). Peak memory consumption was 257.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:59:13,090 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 17:59:13,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.93 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 169.5 MB in the end (delta: -69.4 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-21 17:59:13,092 INFO L168 Benchmark]: Boogie Preprocessor took 130.70 ms. Allocated memory is still 201.9 MB. Free memory was 169.5 MB in the beginning and 165.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:59:13,093 INFO L168 Benchmark]: RCFGBuilder took 1285.22 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 164.7 MB in the beginning and 195.4 MB in the end (delta: -30.7 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2020-08-21 17:59:13,093 INFO L168 Benchmark]: TraceAbstraction took 13136.39 ms. Allocated memory was 233.3 MB in the beginning and 503.3 MB in the end (delta: 270.0 MB). Free memory was 194.0 MB in the beginning and 208.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 255.8 MB. Max. memory is 7.1 GB. [2020-08-21 17:59:13,097 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 743.93 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 169.5 MB in the end (delta: -69.4 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.70 ms. Allocated memory is still 201.9 MB. Free memory was 169.5 MB in the beginning and 165.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1285.22 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 164.7 MB in the beginning and 195.4 MB in the end (delta: -30.7 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13136.39 ms. Allocated memory was 233.3 MB in the beginning and 503.3 MB in the end (delta: 270.0 MB). Free memory was 194.0 MB in the beginning and 208.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 255.8 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: 13.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.3s, 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, 6.2s 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: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s 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...