/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:35:51,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:35:51,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:35:51,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:35:51,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:35:51,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:35:51,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:35:51,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:35:51,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:35:51,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:35:51,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:35:51,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:35:51,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:35:51,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:35:51,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:35:51,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:35:51,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:35:51,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:35:51,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:35:51,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:35:51,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:35:51,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:35:51,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:35:51,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:35:51,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:35:51,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:35:51,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:35:51,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:35:51,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:35:51,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:35:51,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:35:51,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:35:51,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:35:51,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:35:51,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:35:51,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:35:51,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:35:51,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:35:51,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:35:51,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:35:51,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:35:51,617 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 [2020-08-19 02:35:51,659 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:35:51,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:35:51,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:35:51,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:35:51,662 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:35:51,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:35:51,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:35:51,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:35:51,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:35:51,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:35:51,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:35:51,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:35:51,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:35:51,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:35:51,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:35:51,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:35:51,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:35:51,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:35:51,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:35:51,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:35:51,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:35:51,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:35:51,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:35:51,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:35:51,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:35:51,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:35:51,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:35:51,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:35:51,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:35:51,669 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:35:51,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:35:51,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:35:51,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:35:51,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:35:51,986 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:35:51,987 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-08-19 02:35:52,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc9238f6c/57c7808a14024a1491c2190086de88fd/FLAG879c1f321 [2020-08-19 02:35:52,529 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:35:52,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-08-19 02:35:52,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc9238f6c/57c7808a14024a1491c2190086de88fd/FLAG879c1f321 [2020-08-19 02:35:53,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc9238f6c/57c7808a14024a1491c2190086de88fd [2020-08-19 02:35:53,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:35:53,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:35:53,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:35:53,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:35:53,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:35:53,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:35:53" (1/1) ... [2020-08-19 02:35:53,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35272ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:53, skipping insertion in model container [2020-08-19 02:35:53,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:35:53" (1/1) ... [2020-08-19 02:35:53,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:35:53,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:35:53,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:35:53,603 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:35:53,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:35:53,737 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:35:53,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:53 WrapperNode [2020-08-19 02:35:53,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:35:53,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:35:53,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:35:53,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:35:53,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:53" (1/1) ... [2020-08-19 02:35:53,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:53" (1/1) ... [2020-08-19 02:35:53,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:53" (1/1) ... [2020-08-19 02:35:53,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:53" (1/1) ... [2020-08-19 02:35:53,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:53" (1/1) ... [2020-08-19 02:35:53,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:53" (1/1) ... [2020-08-19 02:35:53,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:53" (1/1) ... [2020-08-19 02:35:53,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:35:53,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:35:53,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:35:53,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:35:53,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:53" (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 [2020-08-19 02:35:53,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:35:53,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:35:53,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:35:53,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:35:53,966 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:35:53,967 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:35:53,967 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:35:53,967 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:35:53,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 02:35:53,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:35:53,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:35:53,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:35:53,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:35:53,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:35:53,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:35:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:35:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:35:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:35:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:35:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:35:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:35:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:35:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:35:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:35:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:35:53,973 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:35:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:35:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:35:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:35:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:35:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:35:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:35:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:35:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:35:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:35:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:35:53,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:35:53,976 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:35:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:35:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:35:53,976 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:35:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:35:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:35:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:35:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:35:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:35:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:35:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:35:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:35:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 02:35:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:35:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:35:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:35:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:35:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:35:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:35:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:35:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:35:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:35:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:35:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:35:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:35:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:35:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:35:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:35:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:35:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:35:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:35:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:35:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:35:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:35:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:35:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:35:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:35:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:35:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:35:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:35:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:35:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:35:53,985 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:35:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:35:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:35:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:35:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:35:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:35:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:35:53,986 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:35:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:35:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:35:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:35:55,120 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:35:55,120 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:35:55,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:35:55 BoogieIcfgContainer [2020-08-19 02:35:55,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:35:55,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:35:55,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:35:55,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:35:55,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:35:53" (1/3) ... [2020-08-19 02:35:55,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3f5e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:35:55, skipping insertion in model container [2020-08-19 02:35:55,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:35:53" (2/3) ... [2020-08-19 02:35:55,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3f5e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:35:55, skipping insertion in model container [2020-08-19 02:35:55,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:35:55" (3/3) ... [2020-08-19 02:35:55,135 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product19.cil.c [2020-08-19 02:35:55,146 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:35:55,154 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:35:55,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:35:55,193 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:35:55,193 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:35:55,193 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:35:55,193 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:35:55,193 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:35:55,193 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:35:55,193 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:35:55,193 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:35:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-08-19 02:35:55,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:35:55,228 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:55,229 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] [2020-08-19 02:35:55,229 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash 506531791, now seen corresponding path program 1 times [2020-08-19 02:35:55,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:55,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270540691] [2020-08-19 02:35:55,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:55,950 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:35:55,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:56,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:56,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:56,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:56,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:35:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:56,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:35:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:56,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:35:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:56,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270540691] [2020-08-19 02:35:56,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:56,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:35:56,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545284382] [2020-08-19 02:35:56,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:35:56,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:56,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:35:56,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:35:56,137 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 3 states. [2020-08-19 02:35:57,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:57,274 INFO L93 Difference]: Finished difference Result 273 states and 360 transitions. [2020-08-19 02:35:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:35:57,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 02:35:57,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:57,291 INFO L225 Difference]: With dead ends: 273 [2020-08-19 02:35:57,292 INFO L226 Difference]: Without dead ends: 148 [2020-08-19 02:35:57,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:35:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-19 02:35:57,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-08-19 02:35:57,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-19 02:35:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-19 02:35:57,390 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 52 [2020-08-19 02:35:57,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:57,391 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-19 02:35:57,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:35:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-19 02:35:57,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 02:35:57,397 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:57,398 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] [2020-08-19 02:35:57,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:35:57,400 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:57,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:57,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1226284601, now seen corresponding path program 1 times [2020-08-19 02:35:57,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:57,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600840037] [2020-08-19 02:35:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:57,775 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:35:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:57,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:57,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:57,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:35:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:57,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:35:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:57,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:35:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:57,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600840037] [2020-08-19 02:35:57,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:57,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:35:57,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436568200] [2020-08-19 02:35:57,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:35:57,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:57,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:35:57,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:35:57,828 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 4 states. [2020-08-19 02:35:58,256 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:35:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:35:58,987 INFO L93 Difference]: Finished difference Result 200 states and 243 transitions. [2020-08-19 02:35:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:35:58,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 02:35:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:35:58,991 INFO L225 Difference]: With dead ends: 200 [2020-08-19 02:35:58,991 INFO L226 Difference]: Without dead ends: 132 [2020-08-19 02:35:58,994 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 [2020-08-19 02:35:58,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-19 02:35:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2020-08-19 02:35:59,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-19 02:35:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2020-08-19 02:35:59,035 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 53 [2020-08-19 02:35:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:35:59,035 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2020-08-19 02:35:59,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:35:59,036 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2020-08-19 02:35:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 02:35:59,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:35:59,038 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] [2020-08-19 02:35:59,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:35:59,039 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:35:59,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:35:59,039 INFO L82 PathProgramCache]: Analyzing trace with hash -860632419, now seen corresponding path program 1 times [2020-08-19 02:35:59,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:35:59,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049608598] [2020-08-19 02:35:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:35:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,436 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:35:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:35:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:35:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:35:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:35:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:35:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:35:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:35:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:35:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:35:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:35:59,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049608598] [2020-08-19 02:35:59,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:35:59,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:35:59,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880261196] [2020-08-19 02:35:59,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:35:59,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:35:59,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:35:59,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:35:59,582 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 8 states. [2020-08-19 02:35:59,957 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:36:00,273 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:00,540 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:00,774 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:01,471 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:36:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:02,953 INFO L93 Difference]: Finished difference Result 375 states and 465 transitions. [2020-08-19 02:36:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:36:02,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 02:36:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:02,961 INFO L225 Difference]: With dead ends: 375 [2020-08-19 02:36:02,961 INFO L226 Difference]: Without dead ends: 292 [2020-08-19 02:36:02,962 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 [2020-08-19 02:36:02,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-19 02:36:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 238. [2020-08-19 02:36:03,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-19 02:36:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions. [2020-08-19 02:36:03,042 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 57 [2020-08-19 02:36:03,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:03,042 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 287 transitions. [2020-08-19 02:36:03,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:36:03,043 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions. [2020-08-19 02:36:03,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 02:36:03,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:03,052 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] [2020-08-19 02:36:03,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:36:03,052 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:03,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:03,055 INFO L82 PathProgramCache]: Analyzing trace with hash -792004887, now seen corresponding path program 1 times [2020-08-19 02:36:03,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:03,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300196333] [2020-08-19 02:36:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,386 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:36:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:36:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:36:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:36:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:36:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:36:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:36:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 02:36:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:36:03,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300196333] [2020-08-19 02:36:03,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:36:03,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:36:03,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867537345] [2020-08-19 02:36:03,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:36:03,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:03,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:36:03,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:36:03,469 INFO L87 Difference]: Start difference. First operand 238 states and 287 transitions. Second operand 8 states. [2020-08-19 02:36:03,923 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:36:05,142 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:05,475 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:05,717 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:36:05,950 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:36:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:06,553 INFO L93 Difference]: Finished difference Result 726 states and 953 transitions. [2020-08-19 02:36:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:36:06,554 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 02:36:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:06,560 INFO L225 Difference]: With dead ends: 726 [2020-08-19 02:36:06,560 INFO L226 Difference]: Without dead ends: 512 [2020-08-19 02:36:06,562 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 [2020-08-19 02:36:06,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-08-19 02:36:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 449. [2020-08-19 02:36:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-19 02:36:06,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 555 transitions. [2020-08-19 02:36:06,672 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 555 transitions. Word has length 63 [2020-08-19 02:36:06,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:06,673 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 555 transitions. [2020-08-19 02:36:06,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:36:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 555 transitions. [2020-08-19 02:36:06,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 02:36:06,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:06,676 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] [2020-08-19 02:36:06,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:36:06,676 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:06,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:06,677 INFO L82 PathProgramCache]: Analyzing trace with hash -328985137, now seen corresponding path program 1 times [2020-08-19 02:36:06,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:06,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827842000] [2020-08-19 02:36:06,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:06,928 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:36:06,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:36:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:06,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:36:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:36:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:36:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:06,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:36:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:06,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:36:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:06,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:36:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:06,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:36:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:06,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 02:36:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:36:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:36:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:36:06,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827842000] [2020-08-19 02:36:06,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:36:06,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:36:06,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839889877] [2020-08-19 02:36:06,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:36:06,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:36:06,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:36:06,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:36:06,995 INFO L87 Difference]: Start difference. First operand 449 states and 555 transitions. Second operand 6 states. [2020-08-19 02:36:07,355 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:36:08,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:36:08,037 INFO L93 Difference]: Finished difference Result 761 states and 976 transitions. [2020-08-19 02:36:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:36:08,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-19 02:36:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:36:08,041 INFO L225 Difference]: With dead ends: 761 [2020-08-19 02:36:08,041 INFO L226 Difference]: Without dead ends: 336 [2020-08-19 02:36:08,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:36:08,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-19 02:36:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 315. [2020-08-19 02:36:08,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-08-19 02:36:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 366 transitions. [2020-08-19 02:36:08,106 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 366 transitions. Word has length 67 [2020-08-19 02:36:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:36:08,106 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 366 transitions. [2020-08-19 02:36:08,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:36:08,106 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 366 transitions. [2020-08-19 02:36:08,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 02:36:08,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:36:08,108 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] [2020-08-19 02:36:08,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:36:08,109 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:36:08,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:36:08,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1802868975, now seen corresponding path program 1 times [2020-08-19 02:36:08,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:36:08,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146959222] [2020-08-19 02:36:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:36:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:36:08,164 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:36:08,164 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:36:08,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:36:08,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:36:08 BoogieIcfgContainer [2020-08-19 02:36:08,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:36:08,192 INFO L168 Benchmark]: Toolchain (without parser) took 15147.59 ms. Allocated memory was 141.6 MB in the beginning and 480.8 MB in the end (delta: 339.2 MB). Free memory was 103.8 MB in the beginning and 343.0 MB in the end (delta: -239.2 MB). Peak memory consumption was 100.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:08,193 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:36:08,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.15 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 172.6 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:08,194 INFO L168 Benchmark]: Boogie Preprocessor took 153.16 ms. Allocated memory is still 205.0 MB. Free memory was 172.6 MB in the beginning and 167.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:08,195 INFO L168 Benchmark]: RCFGBuilder took 1233.08 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 167.9 MB in the beginning and 191.5 MB in the end (delta: -23.6 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:08,196 INFO L168 Benchmark]: TraceAbstraction took 13062.44 ms. Allocated memory was 234.4 MB in the beginning and 480.8 MB in the end (delta: 246.4 MB). Free memory was 191.5 MB in the beginning and 343.0 MB in the end (delta: -151.5 MB). Peak memory consumption was 94.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:36:08,200 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 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 694.15 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 172.6 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.16 ms. Allocated memory is still 205.0 MB. Free memory was 172.6 MB in the beginning and 167.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1233.08 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 167.9 MB in the beginning and 191.5 MB in the end (delta: -23.6 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13062.44 ms. Allocated memory was 234.4 MB in the beginning and 480.8 MB in the end (delta: 246.4 MB). Free memory was 191.5 MB in the beginning and 343.0 MB in the end (delta: -151.5 MB). Peak memory consumption was 94.9 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: [L293] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int cleanupTimeShifts = 4; [L594] int waterLevel = 1; [L595] int methaneLevelCritical = 0; [L753] int pumpRunning = 0; [L754] int systemActive = 1; [L568] int retValue_acc ; [L569] int tmp ; [L573] FCALL select_helpers() [L574] FCALL select_features() [L575] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L575] RET, EXPR valid_product() [L575] tmp = valid_product() [L577] COND TRUE \read(tmp) [L579] FCALL setup() [L580] CALL runTest() [L562] CALL test() [L685] int splverifierCounter ; [L686] int tmp ; [L687] int tmp___0 ; [L688] int tmp___1 ; [L689] int tmp___2 ; [L692] splverifierCounter = 0 [L694] COND TRUE 1 [L696] COND TRUE splverifierCounter < 4 [L702] tmp = __VERIFIER_nondet_int() [L704] COND TRUE \read(tmp) [L706] CALL waterRise() [L612] COND TRUE waterLevel < 2 [L613] waterLevel = waterLevel + 1 [L706] RET waterRise() [L712] tmp___0 = __VERIFIER_nondet_int() [L714] COND FALSE !(\read(tmp___0)) [L722] tmp___2 = __VERIFIER_nondet_int() [L724] COND FALSE !(\read(tmp___2)) [L728] tmp___1 = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp___1) [L732] CALL stopSystem() [L908] COND FALSE !(\read(pumpRunning)) [L915] systemActive = 0 [L732] RET stopSystem() [L739] CALL timeShift() [L760] COND FALSE !(\read(pumpRunning)) [L767] COND FALSE !(\read(systemActive)) [L775] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L633] int retValue_acc ; [L636] retValue_acc = methaneLevelCritical [L637] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L665] int retValue_acc ; [L668] retValue_acc = waterLevel [L669] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L841] int retValue_acc ; [L844] retValue_acc = pumpRunning [L845] 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 38 procedures, 223 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 508 SDtfs, 877 SDslu, 356 SDs, 0 SdLazy, 1788 SolverSat, 556 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=449occurred 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, 5 MinimizatonAttempts, 195 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...