/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:18:35,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:18:35,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:18:35,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:18:35,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:18:35,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:18:35,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:18:35,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:18:35,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:18:35,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:18:35,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:18:35,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:18:35,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:18:35,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:18:35,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:18:35,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:18:35,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:18:35,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:18:35,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:18:35,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:18:35,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:18:35,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:18:35,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:18:35,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:18:35,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:18:35,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:18:35,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:18:35,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:18:35,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:18:35,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:18:35,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:18:35,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:18:35,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:18:35,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:18:35,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:18:35,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:18:35,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:18:35,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:18:35,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:18:35,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:18:35,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:18:35,661 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 05:18:35,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:18:35,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:18:35,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:18:35,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:18:35,699 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:18:35,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:18:35,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:18:35,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:18:35,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:18:35,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:18:35,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:18:35,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:18:35,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:18:35,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:18:35,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:18:35,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:18:35,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:18:35,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:18:35,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:18:35,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:18:35,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:18:35,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:18:35,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:18:35,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:18:35,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:18:35,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:18:35,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:18:35,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:18:35,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:18:35,705 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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:18:36,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:18:36,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:18:36,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:18:36,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:18:36,051 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:18:36,052 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c [2020-08-22 05:18:36,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/940fe3093/13144f06f8b44d11acade9d2b6064a3b/FLAGa21b7c38d [2020-08-22 05:18:36,668 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:18:36,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c [2020-08-22 05:18:36,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/940fe3093/13144f06f8b44d11acade9d2b6064a3b/FLAGa21b7c38d [2020-08-22 05:18:36,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/940fe3093/13144f06f8b44d11acade9d2b6064a3b [2020-08-22 05:18:36,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:18:36,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:18:36,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:18:36,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:18:36,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:18:36,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:18:36" (1/1) ... [2020-08-22 05:18:36,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:36, skipping insertion in model container [2020-08-22 05:18:36,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:18:36" (1/1) ... [2020-08-22 05:18:36,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:18:37,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:18:37,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:18:37,437 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:18:37,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:18:37,613 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:18:37,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:37 WrapperNode [2020-08-22 05:18:37,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:18:37,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:18:37,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:18:37,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:18:37,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:37" (1/1) ... [2020-08-22 05:18:37,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:37" (1/1) ... [2020-08-22 05:18:37,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:37" (1/1) ... [2020-08-22 05:18:37,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:37" (1/1) ... [2020-08-22 05:18:37,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:37" (1/1) ... [2020-08-22 05:18:37,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:37" (1/1) ... [2020-08-22 05:18:37,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:37" (1/1) ... [2020-08-22 05:18:37,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:18:37,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:18:37,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:18:37,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:18:37,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:37" (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 05:18:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:18:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:18:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:18:37,836 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:18:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:18:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:18:37,837 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:18:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:18:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:18:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:18:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:18:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:18:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:18:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:18:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 05:18:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:18:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:18:37,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:18:37,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:18:37,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:18:37,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:18:37,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:18:37,843 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:18:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:18:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:18:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:18:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:18:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:18:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:18:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:18:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 05:18:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:18:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:18:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:18:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:18:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:18:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:18:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:18:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 05:18:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 05:18:37,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:18:37,847 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:18:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:18:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:18:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:18:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:18:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:18:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:18:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:18:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:18:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:18:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:18:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:18:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:18:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:18:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:18:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 05:18:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:18:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:18:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:18:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:18:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:18:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:18:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:18:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:18:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:18:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:18:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:18:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:18:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:18:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:18:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:18:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:18:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:18:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:18:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:18:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:18:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:18:37,855 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:18:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:18:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:18:37,856 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:18:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:18:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:18:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:18:37,857 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 05:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:18:37,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:18:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 05:18:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 05:18:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:18:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:18:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:18:37,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:18:38,927 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:18:38,927 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:18:38,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:18:38 BoogieIcfgContainer [2020-08-22 05:18:38,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:18:38,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:18:38,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:18:38,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:18:38,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:18:36" (1/3) ... [2020-08-22 05:18:38,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bbf72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:18:38, skipping insertion in model container [2020-08-22 05:18:38,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:18:37" (2/3) ... [2020-08-22 05:18:38,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bbf72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:18:38, skipping insertion in model container [2020-08-22 05:18:38,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:18:38" (3/3) ... [2020-08-22 05:18:38,941 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product55.cil.c [2020-08-22 05:18:38,952 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:18:38,960 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:18:38,974 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:18:38,997 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:18:38,998 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:18:38,998 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:18:38,998 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:18:38,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:18:38,998 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:18:38,999 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:18:38,999 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:18:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-08-22 05:18:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:18:39,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:39,033 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 05:18:39,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:39,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:39,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1378211837, now seen corresponding path program 1 times [2020-08-22 05:18:39,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:39,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439635001] [2020-08-22 05:18:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:39,735 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:39,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:39,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:39,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:39,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:18:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:39,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:18:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:39,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:18:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:39,856 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 05:18:39,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439635001] [2020-08-22 05:18:39,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:39,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:18:39,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640240875] [2020-08-22 05:18:39,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:18:39,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:39,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:18:39,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:18:39,885 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 3 states. [2020-08-22 05:18:41,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:41,200 INFO L93 Difference]: Finished difference Result 355 states and 464 transitions. [2020-08-22 05:18:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:18:41,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 05:18:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:41,217 INFO L225 Difference]: With dead ends: 355 [2020-08-22 05:18:41,217 INFO L226 Difference]: Without dead ends: 191 [2020-08-22 05:18:41,223 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 [2020-08-22 05:18:41,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-22 05:18:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 155. [2020-08-22 05:18:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 05:18:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2020-08-22 05:18:41,358 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 52 [2020-08-22 05:18:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:41,359 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2020-08-22 05:18:41,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:18:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2020-08-22 05:18:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 05:18:41,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:41,364 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 05:18:41,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:18:41,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:41,365 INFO L82 PathProgramCache]: Analyzing trace with hash 866991252, now seen corresponding path program 1 times [2020-08-22 05:18:41,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:41,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529314371] [2020-08-22 05:18:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:41,730 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:41,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:41,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:41,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:41,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:41,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:41,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:18:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:41,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:18:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:41,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:18:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:41,816 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 05:18:41,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529314371] [2020-08-22 05:18:41,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:41,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:18:41,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150495781] [2020-08-22 05:18:41,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:18:41,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:41,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:18:41,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:18:41,821 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 4 states. [2020-08-22 05:18:42,250 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:43,366 INFO L93 Difference]: Finished difference Result 282 states and 347 transitions. [2020-08-22 05:18:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:18:43,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 05:18:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:43,374 INFO L225 Difference]: With dead ends: 282 [2020-08-22 05:18:43,374 INFO L226 Difference]: Without dead ends: 175 [2020-08-22 05:18:43,381 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 05:18:43,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-22 05:18:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 146. [2020-08-22 05:18:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 05:18:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-22 05:18:43,440 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 53 [2020-08-22 05:18:43,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:43,440 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-22 05:18:43,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:18:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-22 05:18:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 05:18:43,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:43,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:18:43,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:18:43,444 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:43,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:43,444 INFO L82 PathProgramCache]: Analyzing trace with hash 295047202, now seen corresponding path program 1 times [2020-08-22 05:18:43,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:43,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545474171] [2020-08-22 05:18:43,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:43,762 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:43,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:43,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:43,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:43,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:43,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:43,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:18:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:43,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:18:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:18:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:43,848 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 05:18:43,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545474171] [2020-08-22 05:18:43,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:43,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:18:43,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81441960] [2020-08-22 05:18:43,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:18:43,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:43,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:18:43,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:18:43,851 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 8 states. [2020-08-22 05:18:44,211 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:44,575 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:44,815 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:45,052 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:45,780 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:18:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:48,044 INFO L93 Difference]: Finished difference Result 500 states and 624 transitions. [2020-08-22 05:18:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:18:48,048 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 05:18:48,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:48,053 INFO L225 Difference]: With dead ends: 500 [2020-08-22 05:18:48,053 INFO L226 Difference]: Without dead ends: 378 [2020-08-22 05:18:48,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:18:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-22 05:18:48,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 316. [2020-08-22 05:18:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-22 05:18:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 385 transitions. [2020-08-22 05:18:48,132 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 385 transitions. Word has length 57 [2020-08-22 05:18:48,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:48,133 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 385 transitions. [2020-08-22 05:18:48,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:18:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 385 transitions. [2020-08-22 05:18:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 05:18:48,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:48,137 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 05:18:48,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:18:48,137 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:48,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:48,138 INFO L82 PathProgramCache]: Analyzing trace with hash 557384966, now seen corresponding path program 1 times [2020-08-22 05:18:48,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:48,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569725884] [2020-08-22 05:18:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:48,474 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:18:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:18:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:48,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:18:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:48,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:18:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:48,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:18:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:48,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:18:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:48,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:18:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:18:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:48,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:18:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:48,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 05:18:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:18:48,548 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 05:18:48,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569725884] [2020-08-22 05:18:48,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:18:48,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:18:48,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250619364] [2020-08-22 05:18:48,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:18:48,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:18:48,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:18:48,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:18:48,551 INFO L87 Difference]: Start difference. First operand 316 states and 385 transitions. Second operand 8 states. [2020-08-22 05:18:48,894 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:50,349 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:50,747 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:51,058 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:18:51,336 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:52,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:52,313 INFO L93 Difference]: Finished difference Result 976 states and 1285 transitions. [2020-08-22 05:18:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:18:52,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 05:18:52,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:52,325 INFO L225 Difference]: With dead ends: 976 [2020-08-22 05:18:52,326 INFO L226 Difference]: Without dead ends: 684 [2020-08-22 05:18:52,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:18:52,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-08-22 05:18:52,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 613. [2020-08-22 05:18:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-08-22 05:18:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 761 transitions. [2020-08-22 05:18:52,502 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 761 transitions. Word has length 63 [2020-08-22 05:18:52,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:52,503 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 761 transitions. [2020-08-22 05:18:52,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:18:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 761 transitions. [2020-08-22 05:18:52,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 05:18:52,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:52,507 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 05:18:52,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:18:52,507 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:52,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:52,508 INFO L82 PathProgramCache]: Analyzing trace with hash 2018489452, now seen corresponding path program 1 times [2020-08-22 05:18:52,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:52,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382772937] [2020-08-22 05:18:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:18:52,565 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:18:52,565 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:18:52,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:18:52,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:18:52 BoogieIcfgContainer [2020-08-22 05:18:52,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:18:52,592 INFO L168 Benchmark]: Toolchain (without parser) took 15646.39 ms. Allocated memory was 140.5 MB in the beginning and 518.5 MB in the end (delta: 378.0 MB). Free memory was 102.3 MB in the beginning and 451.5 MB in the end (delta: -349.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:52,593 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 05:18:52,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.52 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.1 MB in the beginning and 169.5 MB in the end (delta: -67.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:52,595 INFO L168 Benchmark]: Boogie Preprocessor took 129.89 ms. Allocated memory is still 202.9 MB. Free memory was 169.5 MB in the beginning and 164.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:52,595 INFO L168 Benchmark]: RCFGBuilder took 1188.01 ms. Allocated memory was 202.9 MB in the beginning and 237.5 MB in the end (delta: 34.6 MB). Free memory was 164.8 MB in the beginning and 192.0 MB in the end (delta: -27.2 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:52,596 INFO L168 Benchmark]: TraceAbstraction took 13656.23 ms. Allocated memory was 237.5 MB in the beginning and 518.5 MB in the end (delta: 281.0 MB). Free memory was 190.5 MB in the beginning and 451.5 MB in the end (delta: -261.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:52,600 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 667.52 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.1 MB in the beginning and 169.5 MB in the end (delta: -67.4 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.89 ms. Allocated memory is still 202.9 MB. Free memory was 169.5 MB in the beginning and 164.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1188.01 ms. Allocated memory was 202.9 MB in the beginning and 237.5 MB in the end (delta: 34.6 MB). Free memory was 164.8 MB in the beginning and 192.0 MB in the end (delta: -27.2 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13656.23 ms. Allocated memory was 237.5 MB in the beginning and 518.5 MB in the end (delta: 281.0 MB). Free memory was 190.5 MB in the beginning and 451.5 MB in the end (delta: -261.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 193]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L367] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L564] int cleanupTimeShifts = 4; [L667] int pumpRunning = 0; [L668] int systemActive = 1; [L640] int retValue_acc ; [L641] int tmp ; [L645] FCALL select_helpers() [L646] FCALL select_features() [L647] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L647] RET, EXPR valid_product() [L647] tmp = valid_product() [L649] COND TRUE \read(tmp) [L651] FCALL setup() [L652] CALL runTest() [L634] CALL test() [L941] int splverifierCounter ; [L942] int tmp ; [L943] int tmp___0 ; [L944] int tmp___1 ; [L945] int tmp___2 ; [L948] splverifierCounter = 0 [L950] COND TRUE 1 [L952] COND TRUE splverifierCounter < 4 [L958] tmp = __VERIFIER_nondet_int() [L960] COND TRUE \read(tmp) [L962] CALL waterRise() [L104] COND TRUE waterLevel < 2 [L105] waterLevel = waterLevel + 1 [L962] RET waterRise() [L968] tmp___0 = __VERIFIER_nondet_int() [L970] COND FALSE !(\read(tmp___0)) [L978] tmp___2 = __VERIFIER_nondet_int() [L980] COND FALSE !(\read(tmp___2)) [L984] tmp___1 = __VERIFIER_nondet_int() [L986] COND TRUE \read(tmp___1) [L988] CALL stopSystem() [L894] COND FALSE !(\read(pumpRunning)) [L901] systemActive = 0 [L988] RET stopSystem() [L995] CALL timeShift() [L675] COND FALSE !(\read(pumpRunning)) [L682] COND FALSE !(\read(systemActive)) [L690] CALL __utac_acc__Specification3_spec__1() [L907] int tmp ; [L908] int tmp___0 ; [L909] int tmp___1 ; [L913] CALL, EXPR isMethaneLevelCritical() [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); [L913] RET, EXPR isMethaneLevelCritical() [L913] tmp = isMethaneLevelCritical() [L915] COND FALSE !(\read(tmp)) [L919] CALL, EXPR getWaterLevel() [L157] int retValue_acc ; [L160] retValue_acc = waterLevel [L161] return (retValue_acc); [L919] RET, EXPR getWaterLevel() [L919] tmp___0 = getWaterLevel() [L921] COND TRUE tmp___0 == 2 [L923] CALL, EXPR isPumpRunning() [L808] int retValue_acc ; [L811] retValue_acc = pumpRunning [L812] return (retValue_acc); [L923] RET, EXPR isPumpRunning() [L923] tmp___1 = isPumpRunning() [L925] COND FALSE !(\read(tmp___1)) [L929] CALL __automaton_fail() [L193] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 254 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 586 SDtfs, 983 SDslu, 394 SDs, 0 SdLazy, 2292 SolverSat, 571 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, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=613occurred 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, 198 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 61524 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...