/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:17:54,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:17:54,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:17:54,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:17:54,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:17:54,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:17:54,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:17:54,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:17:54,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:17:54,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:17:54,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:17:54,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:17:54,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:17:54,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:17:54,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:17:54,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:17:54,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:17:54,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:17:54,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:17:54,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:17:54,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:17:54,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:17:54,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:17:54,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:17:54,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:17:54,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:17:54,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:17:54,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:17:54,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:17:54,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:17:54,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:17:54,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:17:54,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:17:54,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:17:54,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:17:54,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:17:54,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:17:54,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:17:54,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:17:54,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:17:54,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:17:54,462 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 [2020-08-18 10:17:54,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:17:54,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:17:54,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:17:54,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:17:54,488 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:17:54,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:17:54,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:17:54,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:17:54,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:17:54,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:17:54,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:17:54,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:17:54,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:17:54,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:17:54,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:17:54,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:17:54,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:17:54,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:17:54,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:17:54,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:17:54,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:17:54,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:17:54,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:17:54,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:17:54,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:17:54,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:17:54,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:17:54,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:17:54,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:17:54,493 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 -> false [2020-08-18 10:17:54,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:17:54,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:17:54,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:17:54,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:17:54,812 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:17:54,812 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-18 10:17:54,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aac9c3701/e27c02c5efbb45758e581e5ea6b88459/FLAG1dd7962b8 [2020-08-18 10:17:55,389 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:17:55,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-18 10:17:55,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aac9c3701/e27c02c5efbb45758e581e5ea6b88459/FLAG1dd7962b8 [2020-08-18 10:17:55,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aac9c3701/e27c02c5efbb45758e581e5ea6b88459 [2020-08-18 10:17:55,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:17:55,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:17:55,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:17:55,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:17:55,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:17:55,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:17:55" (1/1) ... [2020-08-18 10:17:55,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcf94a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:55, skipping insertion in model container [2020-08-18 10:17:55,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:17:55" (1/1) ... [2020-08-18 10:17:55,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:17:55,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:17:56,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:17:56,263 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:17:56,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:17:56,372 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:17:56,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:56 WrapperNode [2020-08-18 10:17:56,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:17:56,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:17:56,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:17:56,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:17:56,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:56" (1/1) ... [2020-08-18 10:17:56,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:56" (1/1) ... [2020-08-18 10:17:56,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:56" (1/1) ... [2020-08-18 10:17:56,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:56" (1/1) ... [2020-08-18 10:17:56,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:56" (1/1) ... [2020-08-18 10:17:56,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:56" (1/1) ... [2020-08-18 10:17:56,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:56" (1/1) ... [2020-08-18 10:17:56,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:17:56,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:17:56,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:17:56,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:17:56,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:56" (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 [2020-08-18 10:17:56,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:17:56,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:17:56,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:17:56,536 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:17:56,536 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:17:56,536 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:17:56,537 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:17:56,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:17:56,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:17:56,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:17:56,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:17:56,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:17:56,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:17:56,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:17:56,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:17:56,540 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:17:56,540 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:17:56,540 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:17:56,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:17:56,541 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:17:56,541 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:17:56,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:17:56,541 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:17:56,541 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:17:56,541 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:17:56,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:17:56,542 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:17:56,542 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:17:56,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:17:56,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:17:56,543 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:17:56,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:17:56,543 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:17:56,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 10:17:56,543 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:17:56,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:17:56,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:17:56,544 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:17:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:17:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:17:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:17:56,544 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:17:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:17:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:17:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:17:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:17:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:17:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:17:56,545 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:17:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:17:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:17:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:17:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:17:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:17:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:17:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:17:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:17:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:17:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:17:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:17:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:17:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:17:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:17:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:17:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:17:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:17:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:17:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:17:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:17:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:17:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:17:56,549 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:17:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:17:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:17:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:17:56,550 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:17:56,551 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:17:56,551 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:17:56,551 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:17:56,552 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:17:56,552 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:17:56,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 10:17:56,552 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:17:56,553 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:17:56,553 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:17:56,553 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:17:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:17:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:17:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:17:56,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:17:57,532 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:17:57,532 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:17:57,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:17:57 BoogieIcfgContainer [2020-08-18 10:17:57,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:17:57,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:17:57,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:17:57,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:17:57,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:17:55" (1/3) ... [2020-08-18 10:17:57,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544679ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:17:57, skipping insertion in model container [2020-08-18 10:17:57,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:17:56" (2/3) ... [2020-08-18 10:17:57,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544679ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:17:57, skipping insertion in model container [2020-08-18 10:17:57,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:17:57" (3/3) ... [2020-08-18 10:17:57,545 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-08-18 10:17:57,555 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:17:57,563 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:17:57,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:17:57,600 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:17:57,600 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:17:57,601 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:17:57,601 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:17:57,601 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:17:57,601 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:17:57,601 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:17:57,602 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:17:57,623 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-08-18 10:17:57,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 10:17:57,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:17:57,633 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] [2020-08-18 10:17:57,634 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:17:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:17:57,640 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-08-18 10:17:57,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:17:57,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970046129] [2020-08-18 10:17:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:17:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:58,272 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:17:58,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:17:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:58,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:17:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:58,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:17:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:17:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:17:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:58,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:17:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:58,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:17:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:17:58,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970046129] [2020-08-18 10:17:58,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:17:58,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:17:58,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423998310] [2020-08-18 10:17:58,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:17:58,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:17:58,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:17:58,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:17:58,384 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-08-18 10:17:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:17:59,327 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-18 10:17:59,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:17:59,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 10:17:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:17:59,348 INFO L225 Difference]: With dead ends: 258 [2020-08-18 10:17:59,349 INFO L226 Difference]: Without dead ends: 140 [2020-08-18 10:17:59,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:17:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-18 10:17:59,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-18 10:17:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-18 10:17:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-18 10:17:59,497 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-18 10:17:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:17:59,498 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-18 10:17:59,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:17:59,498 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-18 10:17:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 10:17:59,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:17:59,503 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] [2020-08-18 10:17:59,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:17:59,504 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:17:59,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:17:59,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-08-18 10:17:59,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:17:59,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067406903] [2020-08-18 10:17:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:17:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:59,870 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:17:59,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:17:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:59,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:17:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:59,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:17:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:59,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:17:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:59,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:17:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:17:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:59,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:17:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:17:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:17:59,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067406903] [2020-08-18 10:17:59,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:17:59,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:17:59,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962320876] [2020-08-18 10:17:59,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:17:59,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:17:59,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:17:59,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:17:59,912 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-18 10:18:00,365 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:00,982 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-18 10:18:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:18:00,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 10:18:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:00,985 INFO L225 Difference]: With dead ends: 187 [2020-08-18 10:18:00,985 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 10:18:00,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:18:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 10:18:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 10:18:01,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 10:18:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-18 10:18:01,018 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-18 10:18:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:01,018 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-18 10:18:01,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:18:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-18 10:18:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:18:01,021 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:01,021 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] [2020-08-18 10:18:01,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:18:01,021 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:01,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:01,022 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-08-18 10:18:01,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:01,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939839678] [2020-08-18 10:18:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:01,320 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:01,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:01,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:01,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:01,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:01,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:18:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:01,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:18:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:01,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939839678] [2020-08-18 10:18:01,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:01,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:18:01,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103615788] [2020-08-18 10:18:01,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:18:01,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:01,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:18:01,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:18:01,417 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-18 10:18:01,780 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:02,081 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:02,316 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:02,551 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:03,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:03,436 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-18 10:18:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:18:03,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 10:18:03,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:03,442 INFO L225 Difference]: With dead ends: 200 [2020-08-18 10:18:03,442 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 10:18:03,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:18:03,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 10:18:03,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 10:18:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 10:18:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-18 10:18:03,472 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-18 10:18:03,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:03,473 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-18 10:18:03,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:18:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-18 10:18:03,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 10:18:03,474 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:03,475 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] [2020-08-18 10:18:03,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:18:03,475 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:03,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:03,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-08-18 10:18:03,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:03,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417832941] [2020-08-18 10:18:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,772 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:03,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:18:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 10:18:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 10:18:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:03,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417832941] [2020-08-18 10:18:03,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:03,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:18:03,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313934146] [2020-08-18 10:18:03,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:18:03,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:03,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:18:03,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:18:03,847 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-18 10:18:04,158 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:05,194 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:05,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:05,600 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-18 10:18:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:18:05,602 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 10:18:05,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:05,605 INFO L225 Difference]: With dead ends: 288 [2020-08-18 10:18:05,605 INFO L226 Difference]: Without dead ends: 212 [2020-08-18 10:18:05,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:18:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-18 10:18:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-18 10:18:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 10:18:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-18 10:18:05,646 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-18 10:18:05,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:05,646 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-18 10:18:05,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:18:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-18 10:18:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 10:18:05,648 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:05,648 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:05,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:18:05,649 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:05,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:05,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-08-18 10:18:05,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:05,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557474615] [2020-08-18 10:18:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,930 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:05,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:05,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:06,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:18:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:06,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:06,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 10:18:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:06,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 10:18:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:06,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557474615] [2020-08-18 10:18:06,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:06,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:18:06,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84559724] [2020-08-18 10:18:06,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:18:06,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:06,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:18:06,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:18:06,061 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-08-18 10:18:06,407 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:07,445 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:07,698 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:07,920 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:08,126 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:08,383 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:08,989 INFO L93 Difference]: Finished difference Result 505 states and 630 transitions. [2020-08-18 10:18:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:18:08,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-18 10:18:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:08,995 INFO L225 Difference]: With dead ends: 505 [2020-08-18 10:18:08,995 INFO L226 Difference]: Without dead ends: 360 [2020-08-18 10:18:08,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:18:08,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-18 10:18:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 293. [2020-08-18 10:18:09,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-18 10:18:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-08-18 10:18:09,070 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 74 [2020-08-18 10:18:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:09,070 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-08-18 10:18:09,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:18:09,071 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-08-18 10:18:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 10:18:09,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:09,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:09,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:18:09,073 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:09,073 INFO L82 PathProgramCache]: Analyzing trace with hash -133122882, now seen corresponding path program 1 times [2020-08-18 10:18:09,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:09,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501589041] [2020-08-18 10:18:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,350 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:09,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:18:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 10:18:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:18:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:09,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501589041] [2020-08-18 10:18:09,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:09,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:18:09,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378376427] [2020-08-18 10:18:09,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:18:09,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:09,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:18:09,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:18:09,436 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 9 states. [2020-08-18 10:18:09,767 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:10,754 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:10,958 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:11,204 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:11,435 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:11,664 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:12,252 INFO L93 Difference]: Finished difference Result 402 states and 512 transitions. [2020-08-18 10:18:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 10:18:12,253 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 10:18:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:12,258 INFO L225 Difference]: With dead ends: 402 [2020-08-18 10:18:12,258 INFO L226 Difference]: Without dead ends: 399 [2020-08-18 10:18:12,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:18:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-18 10:18:12,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 293. [2020-08-18 10:18:12,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-18 10:18:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-08-18 10:18:12,326 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 78 [2020-08-18 10:18:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:12,326 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-08-18 10:18:12,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:18:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-08-18 10:18:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 10:18:12,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:12,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:12,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:18:12,328 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:12,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-08-18 10:18:12,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:12,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133578849] [2020-08-18 10:18:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,546 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:18:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 10:18:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 10:18:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:12,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133578849] [2020-08-18 10:18:12,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:12,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:18:12,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502278877] [2020-08-18 10:18:12,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:18:12,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:12,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:18:12,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:18:12,667 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 9 states. [2020-08-18 10:18:13,594 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:18:13,823 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:18:14,046 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:14,260 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:15,020 INFO L93 Difference]: Finished difference Result 672 states and 837 transitions. [2020-08-18 10:18:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:18:15,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-18 10:18:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:15,025 INFO L225 Difference]: With dead ends: 672 [2020-08-18 10:18:15,026 INFO L226 Difference]: Without dead ends: 403 [2020-08-18 10:18:15,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:18:15,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-08-18 10:18:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 303. [2020-08-18 10:18:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-18 10:18:15,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2020-08-18 10:18:15,087 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 79 [2020-08-18 10:18:15,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:15,088 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2020-08-18 10:18:15,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:18:15,088 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2020-08-18 10:18:15,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 10:18:15,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:15,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:15,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:18:15,090 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:15,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-08-18 10:18:15,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:15,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490229027] [2020-08-18 10:18:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,352 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:18:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 10:18:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 10:18:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:15,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490229027] [2020-08-18 10:18:15,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:15,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 10:18:15,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273267407] [2020-08-18 10:18:15,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:18:15,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:15,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:18:15,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:18:15,474 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand 11 states. [2020-08-18 10:18:15,980 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:16,219 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:16,436 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:17,014 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:17,279 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:17,500 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:18:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:18,340 INFO L93 Difference]: Finished difference Result 696 states and 875 transitions. [2020-08-18 10:18:18,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:18:18,341 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-18 10:18:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:18,346 INFO L225 Difference]: With dead ends: 696 [2020-08-18 10:18:18,346 INFO L226 Difference]: Without dead ends: 417 [2020-08-18 10:18:18,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:18:18,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-18 10:18:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 311. [2020-08-18 10:18:18,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-18 10:18:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-08-18 10:18:18,426 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 79 [2020-08-18 10:18:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:18,427 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-08-18 10:18:18,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:18:18,427 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-08-18 10:18:18,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 10:18:18,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:18,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:18,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:18:18,429 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:18,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:18,429 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-08-18 10:18:18,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:18,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602146688] [2020-08-18 10:18:18,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,691 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:18:18,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:18:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:18:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:18:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:18:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:18:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:18:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:18:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:18:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:18:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:18:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 10:18:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 10:18:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:18:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:18:18,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602146688] [2020-08-18 10:18:18,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:18:18,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:18:18,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951590879] [2020-08-18 10:18:18,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:18:18,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:18:18,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:18:18,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:18:18,796 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 7 states. [2020-08-18 10:18:19,228 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:19,689 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:18:21,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:18:21,358 INFO L93 Difference]: Finished difference Result 1018 states and 1317 transitions. [2020-08-18 10:18:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:18:21,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-08-18 10:18:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:18:21,364 INFO L225 Difference]: With dead ends: 1018 [2020-08-18 10:18:21,364 INFO L226 Difference]: Without dead ends: 731 [2020-08-18 10:18:21,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:18:21,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-18 10:18:21,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2020-08-18 10:18:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-08-18 10:18:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 719 transitions. [2020-08-18 10:18:21,473 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 719 transitions. Word has length 79 [2020-08-18 10:18:21,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:18:21,473 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 719 transitions. [2020-08-18 10:18:21,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:18:21,474 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 719 transitions. [2020-08-18 10:18:21,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 10:18:21,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:18:21,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:18:21,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:18:21,476 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:18:21,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:18:21,476 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-08-18 10:18:21,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:18:21,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589442280] [2020-08-18 10:18:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:18:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:18:21,528 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:18:21,528 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:18:21,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:18:21,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:18:21 BoogieIcfgContainer [2020-08-18 10:18:21,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:18:21,557 INFO L168 Benchmark]: Toolchain (without parser) took 25798.25 ms. Allocated memory was 139.5 MB in the beginning and 630.2 MB in the end (delta: 490.7 MB). Free memory was 101.3 MB in the beginning and 444.2 MB in the end (delta: -342.9 MB). Peak memory consumption was 147.8 MB. Max. memory is 7.1 GB. [2020-08-18 10:18:21,558 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 10:18:21,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.19 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 168.7 MB in the end (delta: -67.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:18:21,560 INFO L168 Benchmark]: Boogie Preprocessor took 87.85 ms. Allocated memory is still 201.9 MB. Free memory was 168.7 MB in the beginning and 164.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 10:18:21,560 INFO L168 Benchmark]: RCFGBuilder took 1075.16 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 164.6 MB in the beginning and 195.6 MB in the end (delta: -31.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-08-18 10:18:21,561 INFO L168 Benchmark]: TraceAbstraction took 24017.29 ms. Allocated memory was 234.9 MB in the beginning and 630.2 MB in the end (delta: 395.3 MB). Free memory was 195.6 MB in the beginning and 444.2 MB in the end (delta: -248.6 MB). Peak memory consumption was 146.7 MB. Max. memory is 7.1 GB. [2020-08-18 10:18:21,564 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 613.19 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 168.7 MB in the end (delta: -67.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.85 ms. Allocated memory is still 201.9 MB. Free memory was 168.7 MB in the beginning and 164.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1075.16 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 164.6 MB in the beginning and 195.6 MB in the end (delta: -31.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24017.29 ms. Allocated memory was 234.9 MB in the beginning and 630.2 MB in the end (delta: 395.3 MB). Free memory was 195.6 MB in the beginning and 444.2 MB in the end (delta: -248.6 MB). Peak memory consumption was 146.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] splverifierCounter = 0 [L629] COND TRUE 1 [L631] COND TRUE splverifierCounter < 4 [L637] tmp = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp) [L641] CALL waterRise() [L542] COND TRUE waterLevel < 2 [L543] waterLevel = waterLevel + 1 [L641] RET waterRise() [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp___0) [L651] CALL changeMethaneLevel() [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 [L651] RET changeMethaneLevel() [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) [L674] CALL timeShift() [L697] COND FALSE !(\read(pumpRunning)) [L704] COND TRUE \read(systemActive) [L706] CALL processEnvironment() [L726] int tmp ; [L729] COND TRUE ! pumpRunning [L731] CALL, EXPR isHighWaterLevel() [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; [L829] CALL, EXPR isHighWaterSensorDry() [L604] int retValue_acc ; [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); [L829] RET, EXPR isHighWaterSensorDry() [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); [L731] RET, EXPR isHighWaterLevel() [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) [L735] CALL activatePump() [L754] pumpRunning = 1 [L735] RET activatePump() [L706] RET processEnvironment() [L712] CALL __utac_acc__Specification1_spec__1() [L851] int tmp ; [L852] int tmp___0 ; [L856] CALL, EXPR isMethaneLevelCritical() [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) [L860] CALL, EXPR isPumpRunning() [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); [L860] RET, EXPR isPumpRunning() [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) [L864] CALL __automaton_fail() [L514] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 19.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 899 SDtfs, 1722 SDslu, 877 SDs, 0 SdLazy, 4201 SolverSat, 1159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 621 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 677 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 176723 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...