/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=DEEPEST --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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:23:47,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:23:47,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:23:47,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:23:47,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:23:47,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:23:47,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:23:47,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:23:47,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:23:47,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:23:47,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:23:47,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:23:47,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:23:47,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:23:47,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:23:47,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:23:47,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:23:47,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:23:47,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:23:47,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:23:47,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:23:47,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:23:47,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:23:47,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:23:47,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:23:47,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:23:47,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:23:47,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:23:47,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:23:47,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:23:47,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:23:47,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:23:47,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:23:47,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:23:47,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:23:47,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:23:47,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:23:47,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:23:47,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:23:47,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:23:47,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:23:47,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 20:23:47,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:23:47,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:23:47,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:23:47,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:23:47,541 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:23:47,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:23:47,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:23:47,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:23:47,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:23:47,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:23:47,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:23:47,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:23:47,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:23:47,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:23:47,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:23:47,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:23:47,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:23:47,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:23:47,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:23:47,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:23:47,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:23:47,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:23:47,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:23:47,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:23:47,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:23:47,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:23:47,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:23:47,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:23:47,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:23:47,547 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=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:23:47,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:23:47,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:23:47,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:23:47,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:23:47,856 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:23:47,857 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c [2020-08-21 20:23:47,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2fc0e88f/9f40358b7fdf4905a1209c8b0fc2491c/FLAG662d17f50 [2020-08-21 20:23:48,479 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:23:48,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c [2020-08-21 20:23:48,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2fc0e88f/9f40358b7fdf4905a1209c8b0fc2491c/FLAG662d17f50 [2020-08-21 20:23:48,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2fc0e88f/9f40358b7fdf4905a1209c8b0fc2491c [2020-08-21 20:23:48,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:23:48,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:23:48,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:23:48,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:23:48,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:23:48,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:23:48" (1/1) ... [2020-08-21 20:23:48,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:48, skipping insertion in model container [2020-08-21 20:23:48,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:23:48" (1/1) ... [2020-08-21 20:23:48,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:23:48,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:23:49,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:23:49,337 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:23:49,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:23:49,447 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:23:49,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49 WrapperNode [2020-08-21 20:23:49,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:23:49,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:23:49,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:23:49,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:23:49,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:23:49,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:23:49,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:23:49,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:23:49,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:23:49,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:23:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:23:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 20:23:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 20:23:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 20:23:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 20:23:49,606 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 20:23:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 20:23:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 20:23:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 20:23:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 20:23:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 20:23:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 20:23:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 20:23:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 20:23:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 20:23:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 20:23:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 20:23:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 20:23:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 20:23:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 20:23:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 20:23:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 20:23:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 20:23:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 20:23:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 20:23:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 20:23:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 20:23:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 20:23:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 20:23:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 20:23:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:23:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 20:23:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 20:23:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 20:23:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 20:23:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 20:23:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 20:23:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 20:23:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 20:23:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:23:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:23:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 20:23:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 20:23:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 20:23:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 20:23:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 20:23:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 20:23:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 20:23:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 20:23:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 20:23:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 20:23:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 20:23:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 20:23:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 20:23:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 20:23:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 20:23:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 20:23:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 20:23:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 20:23:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 20:23:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 20:23:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 20:23:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 20:23:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:23:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 20:23:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 20:23:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 20:23:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 20:23:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 20:23:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 20:23:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 20:23:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 20:23:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:23:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 20:23:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 20:23:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:23:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:23:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 20:23:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:23:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:23:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:23:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:23:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 20:23:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:23:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 20:23:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 20:23:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:23:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 20:23:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 20:23:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 20:23:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:23:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:23:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:23:50,652 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:23:50,652 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 20:23:50,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:23:50 BoogieIcfgContainer [2020-08-21 20:23:50,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:23:50,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:23:50,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:23:50,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:23:50,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:23:48" (1/3) ... [2020-08-21 20:23:50,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59057175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:23:50, skipping insertion in model container [2020-08-21 20:23:50,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (2/3) ... [2020-08-21 20:23:50,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59057175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:23:50, skipping insertion in model container [2020-08-21 20:23:50,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:23:50" (3/3) ... [2020-08-21 20:23:50,667 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product28.cil.c [2020-08-21 20:23:50,678 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:23:50,687 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:23:50,701 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:23:50,728 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:23:50,728 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:23:50,728 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:23:50,728 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:23:50,728 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:23:50,729 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:23:50,729 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:23:50,729 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:23:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-21 20:23:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 20:23:50,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:50,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:50,763 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:50,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1443511359, now seen corresponding path program 1 times [2020-08-21 20:23:50,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:50,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953865921] [2020-08-21 20:23:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,432 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:51,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:23:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 20:23:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:23:51,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953865921] [2020-08-21 20:23:51,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:51,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 20:23:51,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427785560] [2020-08-21 20:23:51,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 20:23:51,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:51,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 20:23:51,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:23:51,570 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-21 20:23:52,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:52,647 INFO L93 Difference]: Finished difference Result 282 states and 370 transitions. [2020-08-21 20:23:52,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:23:52,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 20:23:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:52,666 INFO L225 Difference]: With dead ends: 282 [2020-08-21 20:23:52,667 INFO L226 Difference]: Without dead ends: 153 [2020-08-21 20:23:52,673 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 [2020-08-21 20:23:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-21 20:23:52,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-08-21 20:23:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-21 20:23:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-21 20:23:52,758 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 52 [2020-08-21 20:23:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:52,759 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-21 20:23:52,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 20:23:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-21 20:23:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 20:23:52,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:52,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:52,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:23:52,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:52,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:52,764 INFO L82 PathProgramCache]: Analyzing trace with hash 880615085, now seen corresponding path program 1 times [2020-08-21 20:23:52,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:52,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878266104] [2020-08-21 20:23:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,111 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:23:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:23:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 20:23:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:23:53,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878266104] [2020-08-21 20:23:53,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:53,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:23:53,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736480031] [2020-08-21 20:23:53,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:23:53,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:53,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:23:53,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:23:53,208 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-08-21 20:23:53,618 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:23:54,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:54,290 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2020-08-21 20:23:54,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:23:54,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 20:23:54,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:54,293 INFO L225 Difference]: With dead ends: 205 [2020-08-21 20:23:54,293 INFO L226 Difference]: Without dead ends: 137 [2020-08-21 20:23:54,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 20:23:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-21 20:23:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2020-08-21 20:23:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-21 20:23:54,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2020-08-21 20:23:54,330 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 53 [2020-08-21 20:23:54,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:54,331 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2020-08-21 20:23:54,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:23:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2020-08-21 20:23:54,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 20:23:54,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:54,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:54,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:23:54,334 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:54,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:54,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1617309652, now seen corresponding path program 1 times [2020-08-21 20:23:54,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:54,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230068738] [2020-08-21 20:23:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:54,652 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:54,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:54,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 20:23:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:54,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:54,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 20:23:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:23:54,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230068738] [2020-08-21 20:23:54,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:54,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:23:54,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861001490] [2020-08-21 20:23:54,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:23:54,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:54,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:23:54,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:23:54,746 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 8 states. [2020-08-21 20:23:55,092 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:23:55,392 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:55,645 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:55,873 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:56,614 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:23:58,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:58,220 INFO L93 Difference]: Finished difference Result 390 states and 482 transitions. [2020-08-21 20:23:58,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:23:58,221 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 20:23:58,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:58,230 INFO L225 Difference]: With dead ends: 390 [2020-08-21 20:23:58,230 INFO L226 Difference]: Without dead ends: 303 [2020-08-21 20:23:58,234 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 [2020-08-21 20:23:58,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-21 20:23:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 242. [2020-08-21 20:23:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-21 20:23:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2020-08-21 20:23:58,336 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 58 [2020-08-21 20:23:58,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:58,336 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2020-08-21 20:23:58,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:23:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2020-08-21 20:23:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 20:23:58,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:58,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:23:58,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:23:58,340 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:58,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:58,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1904985657, now seen corresponding path program 1 times [2020-08-21 20:23:58,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:58,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711943484] [2020-08-21 20:23:58,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:58,629 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:58,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:58,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:23:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:23:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:23:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:58,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 20:23:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:58,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:23:58,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711943484] [2020-08-21 20:23:58,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:58,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:23:58,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51929685] [2020-08-21 20:23:58,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:23:58,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:58,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:23:58,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:23:58,733 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand 8 states. [2020-08-21 20:23:59,140 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:24:00,444 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:24:00,769 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:24:01,027 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:24:01,300 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:24:01,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:24:01,950 INFO L93 Difference]: Finished difference Result 741 states and 971 transitions. [2020-08-21 20:24:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 20:24:01,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 20:24:01,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:24:01,956 INFO L225 Difference]: With dead ends: 741 [2020-08-21 20:24:01,956 INFO L226 Difference]: Without dead ends: 523 [2020-08-21 20:24:01,959 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 [2020-08-21 20:24:01,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-21 20:24:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 457. [2020-08-21 20:24:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-21 20:24:02,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 563 transitions. [2020-08-21 20:24:02,059 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 563 transitions. Word has length 63 [2020-08-21 20:24:02,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:24:02,060 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 563 transitions. [2020-08-21 20:24:02,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:24:02,060 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 563 transitions. [2020-08-21 20:24:02,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 20:24:02,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:24:02,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:24:02,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:24:02,064 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:24:02,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:24:02,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1824895917, now seen corresponding path program 1 times [2020-08-21 20:24:02,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:24:02,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090355716] [2020-08-21 20:24:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:24:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:24:02,325 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:24:02,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:24:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:24:02,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:24:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:24:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:24:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:24:02,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:24:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:24:02,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:24:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:24:02,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:24:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:24:02,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 20:24:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:24:02,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 20:24:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:24:02,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 20:24:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:24:02,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 20:24:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:24:02,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 20:24:02,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090355716] [2020-08-21 20:24:02,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:24:02,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 20:24:02,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273764438] [2020-08-21 20:24:02,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:24:02,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:24:02,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:24:02,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:24:02,438 INFO L87 Difference]: Start difference. First operand 457 states and 563 transitions. Second operand 6 states. [2020-08-21 20:24:02,722 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:24:03,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:24:03,501 INFO L93 Difference]: Finished difference Result 806 states and 1047 transitions. [2020-08-21 20:24:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 20:24:03,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 20:24:03,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:24:03,508 INFO L225 Difference]: With dead ends: 806 [2020-08-21 20:24:03,508 INFO L226 Difference]: Without dead ends: 373 [2020-08-21 20:24:03,511 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 [2020-08-21 20:24:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-08-21 20:24:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 323. [2020-08-21 20:24:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-21 20:24:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 374 transitions. [2020-08-21 20:24:03,581 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 374 transitions. Word has length 67 [2020-08-21 20:24:03,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:24:03,582 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 374 transitions. [2020-08-21 20:24:03,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:24:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 374 transitions. [2020-08-21 20:24:03,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 20:24:03,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:24:03,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:24:03,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:24:03,584 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:24:03,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:24:03,585 INFO L82 PathProgramCache]: Analyzing trace with hash 2047531853, now seen corresponding path program 1 times [2020-08-21 20:24:03,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:24:03,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666096300] [2020-08-21 20:24:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:24:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 20:24:03,639 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 20:24:03,639 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 20:24:03,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:24:03,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:24:03 BoogieIcfgContainer [2020-08-21 20:24:03,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:24:03,669 INFO L168 Benchmark]: Toolchain (without parser) took 14887.93 ms. Allocated memory was 141.0 MB in the beginning and 485.0 MB in the end (delta: 343.9 MB). Free memory was 102.8 MB in the beginning and 316.6 MB in the end (delta: -213.8 MB). Peak memory consumption was 130.2 MB. Max. memory is 7.1 GB. [2020-08-21 20:24:03,670 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 20:24:03,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.66 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 170.6 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-21 20:24:03,672 INFO L168 Benchmark]: Boogie Preprocessor took 90.30 ms. Allocated memory is still 203.9 MB. Free memory was 170.6 MB in the beginning and 166.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 20:24:03,673 INFO L168 Benchmark]: RCFGBuilder took 1117.84 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 166.7 MB in the beginning and 191.4 MB in the end (delta: -24.7 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2020-08-21 20:24:03,673 INFO L168 Benchmark]: TraceAbstraction took 13008.10 ms. Allocated memory was 234.4 MB in the beginning and 485.0 MB in the end (delta: 250.6 MB). Free memory was 191.4 MB in the beginning and 316.6 MB in the end (delta: -125.2 MB). Peak memory consumption was 125.4 MB. Max. memory is 7.1 GB. [2020-08-21 20:24:03,677 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 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 665.66 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 170.6 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.30 ms. Allocated memory is still 203.9 MB. Free memory was 170.6 MB in the beginning and 166.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1117.84 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 166.7 MB in the beginning and 191.4 MB in the end (delta: -24.7 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13008.10 ms. Allocated memory was 234.4 MB in the beginning and 485.0 MB in the end (delta: 250.6 MB). Free memory was 191.4 MB in the beginning and 316.6 MB in the end (delta: -125.2 MB). Peak memory consumption was 125.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L89] int pumpRunning = 0; [L90] int systemActive = 1; [L356] int waterLevel = 1; [L357] int methaneLevelCritical = 0; [L445] int cleanupTimeShifts = 4; [L753] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L518] int retValue_acc ; [L519] int tmp ; [L523] FCALL select_helpers() [L524] FCALL select_features() [L525] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L525] RET, EXPR valid_product() [L525] tmp = valid_product() [L527] COND TRUE \read(tmp) [L529] FCALL setup() [L530] CALL runTest() [L512] CALL test() [L287] int splverifierCounter ; [L288] int tmp ; [L289] int tmp___0 ; [L290] int tmp___1 ; [L291] int tmp___2 ; [L294] splverifierCounter = 0 [L296] COND TRUE 1 [L298] COND TRUE splverifierCounter < 4 [L304] tmp = __VERIFIER_nondet_int() [L306] COND TRUE \read(tmp) [L308] CALL waterRise() [L374] COND TRUE waterLevel < 2 [L375] waterLevel = waterLevel + 1 [L308] RET waterRise() [L314] tmp___0 = __VERIFIER_nondet_int() [L316] COND FALSE !(\read(tmp___0)) [L324] tmp___2 = __VERIFIER_nondet_int() [L326] COND FALSE !(\read(tmp___2)) [L332] tmp___1 = __VERIFIER_nondet_int() [L334] COND TRUE \read(tmp___1) [L336] CALL stopSystem() [L263] COND FALSE !(\read(pumpRunning)) [L270] systemActive = 0 [L336] RET stopSystem() [L343] CALL timeShift() [L97] COND FALSE !(\read(pumpRunning)) [L104] COND FALSE !(\read(systemActive)) [L112] CALL __utac_acc__Specification3_spec__1() [L551] int tmp ; [L552] int tmp___0 ; [L553] int tmp___1 ; [L557] CALL, EXPR isMethaneLevelCritical() [L395] int retValue_acc ; [L398] retValue_acc = methaneLevelCritical [L399] return (retValue_acc); [L557] RET, EXPR isMethaneLevelCritical() [L557] tmp = isMethaneLevelCritical() [L559] COND FALSE !(\read(tmp)) [L563] CALL, EXPR getWaterLevel() [L427] int retValue_acc ; [L430] retValue_acc = waterLevel [L431] return (retValue_acc); [L563] RET, EXPR getWaterLevel() [L563] tmp___0 = getWaterLevel() [L565] COND TRUE tmp___0 == 2 [L567] CALL, EXPR isPumpRunning() [L196] int retValue_acc ; [L199] retValue_acc = pumpRunning [L200] return (retValue_acc); [L567] RET, EXPR isPumpRunning() [L567] tmp___1 = isPumpRunning() [L569] COND FALSE !(\read(tmp___1)) [L573] CALL __automaton_fail() [L545] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 234 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 533 SDtfs, 833 SDslu, 413 SDs, 0 SdLazy, 1915 SolverSat, 543 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s 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=457occurred 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, 236 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 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...