/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_spec3_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:07:14,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:07:14,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:07:14,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:07:14,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:07:14,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:07:14,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:07:14,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:07:14,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:07:14,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:07:14,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:07:14,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:07:14,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:07:14,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:07:14,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:07:14,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:07:14,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:07:14,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:07:14,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:07:14,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:07:14,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:07:14,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:07:14,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:07:14,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:07:14,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:07:14,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:07:14,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:07:14,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:07:14,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:07:14,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:07:14,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:07:14,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:07:14,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:07:14,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:07:14,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:07:14,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:07:14,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:07:14,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:07:14,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:07:14,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:07:14,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:07:14,496 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 [2020-09-21 10:07:14,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:07:14,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:07:14,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:07:14,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:07:14,524 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:07:14,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:07:14,525 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:07:14,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:07:14,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:07:14,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:07:14,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:07:14,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:07:14,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:07:14,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:07:14,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:07:14,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:07:14,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:07:14,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:07:14,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:07:14,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:07:14,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:07:14,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:07:14,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:07:14,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:07:14,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:07:14,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:07:14,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:07:14,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:07:14,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:07:14,529 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 [2020-09-21 10:07:14,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:07:15,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:07:15,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:07:15,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:07:15,020 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:07:15,021 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-09-21 10:07:15,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fce0bdb6/a83eb8f56acf42b5aca3822c8bbee6ee/FLAG29ba24894 [2020-09-21 10:07:15,755 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:07:15,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-09-21 10:07:15,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fce0bdb6/a83eb8f56acf42b5aca3822c8bbee6ee/FLAG29ba24894 [2020-09-21 10:07:15,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fce0bdb6/a83eb8f56acf42b5aca3822c8bbee6ee [2020-09-21 10:07:15,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:07:15,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:07:15,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:07:15,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:07:16,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:07:16,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:07:15" (1/1) ... [2020-09-21 10:07:16,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:16, skipping insertion in model container [2020-09-21 10:07:16,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:07:15" (1/1) ... [2020-09-21 10:07:16,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:07:16,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:07:16,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:07:16,597 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:07:16,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:07:16,754 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:07:16,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:16 WrapperNode [2020-09-21 10:07:16,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:07:16,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:07:16,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:07:16,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:07:16,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:16" (1/1) ... [2020-09-21 10:07:16,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:16" (1/1) ... [2020-09-21 10:07:16,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:16" (1/1) ... [2020-09-21 10:07:16,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:16" (1/1) ... [2020-09-21 10:07:16,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:16" (1/1) ... [2020-09-21 10:07:16,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:16" (1/1) ... [2020-09-21 10:07:16,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:16" (1/1) ... [2020-09-21 10:07:16,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:07:16,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:07:16,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:07:16,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:07:16,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:16" (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 [2020-09-21 10:07:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:07:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:07:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:07:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:07:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:07:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:07:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:07:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:07:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:07:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:07:16,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:07:16,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:07:16,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:07:16,957 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:07:16,957 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:07:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:07:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:07:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:07:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:07:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:07:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:07:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:07:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:07:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:07:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:07:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:07:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:07:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 10:07:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 10:07:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:07:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:07:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:07:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:07:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:07:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:07:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:07:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:07:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 10:07:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:07:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:07:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:07:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:07:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:07:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:07:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:07:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:07:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:07:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:07:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:07:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:07:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:07:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:07:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:07:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:07:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:07:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:07:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:07:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:07:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:07:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:07:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:07:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:07:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:07:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:07:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:07:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:07:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:07:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:07:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:07:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:07:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:07:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:07:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:07:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:07:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:07:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:07:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:07:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:07:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:07:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:07:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 10:07:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:07:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:07:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 10:07:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:07:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:07:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:07:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 10:07:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:07:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:07:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:07:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:07:18,256 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:07:18,257 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:07:18,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:07:18 BoogieIcfgContainer [2020-09-21 10:07:18,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:07:18,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:07:18,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:07:18,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:07:18,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:07:15" (1/3) ... [2020-09-21 10:07:18,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e349810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:07:18, skipping insertion in model container [2020-09-21 10:07:18,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:16" (2/3) ... [2020-09-21 10:07:18,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e349810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:07:18, skipping insertion in model container [2020-09-21 10:07:18,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:07:18" (3/3) ... [2020-09-21 10:07:18,272 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2020-09-21 10:07:18,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:07:18,294 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:07:18,316 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:07:18,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:07:18,348 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:07:18,348 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:07:18,348 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:07:18,348 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:07:18,348 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:07:18,349 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:07:18,349 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:07:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-09-21 10:07:18,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:07:18,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:18,389 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] [2020-09-21 10:07:18,389 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:18,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:18,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1020125937, now seen corresponding path program 1 times [2020-09-21 10:07:18,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:18,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638035064] [2020-09-21 10:07:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:19,154 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:19,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:19,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:19,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:19,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:07:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:19,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:07:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:19,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:07:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:07:19,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638035064] [2020-09-21 10:07:19,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:19,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:07:19,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446427409] [2020-09-21 10:07:19,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:07:19,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:19,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:07:19,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:07:19,351 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-09-21 10:07:20,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:20,500 INFO L93 Difference]: Finished difference Result 282 states and 370 transitions. [2020-09-21 10:07:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:07:20,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 10:07:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:20,521 INFO L225 Difference]: With dead ends: 282 [2020-09-21 10:07:20,521 INFO L226 Difference]: Without dead ends: 153 [2020-09-21 10:07:20,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:07:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-21 10:07:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-09-21 10:07:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-21 10:07:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-09-21 10:07:20,631 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 52 [2020-09-21 10:07:20,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:20,631 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-09-21 10:07:20,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:07:20,632 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-09-21 10:07:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 10:07:20,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:20,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:07:20,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:07:20,636 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:20,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:20,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1976002315, now seen corresponding path program 1 times [2020-09-21 10:07:20,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:20,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981010395] [2020-09-21 10:07:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:21,007 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:21,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:21,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:21,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:21,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:21,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:07:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:07:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:07:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:07:21,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981010395] [2020-09-21 10:07:21,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:21,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:07:21,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786292507] [2020-09-21 10:07:21,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:07:21,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:21,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:07:21,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:07:21,067 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-09-21 10:07:21,491 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:07:22,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:22,185 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2020-09-21 10:07:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:07:22,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 10:07:22,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:22,189 INFO L225 Difference]: With dead ends: 205 [2020-09-21 10:07:22,189 INFO L226 Difference]: Without dead ends: 137 [2020-09-21 10:07:22,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:07:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-21 10:07:22,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2020-09-21 10:07:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-21 10:07:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2020-09-21 10:07:22,232 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 53 [2020-09-21 10:07:22,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:22,232 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2020-09-21 10:07:22,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:07:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2020-09-21 10:07:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 10:07:22,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:22,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:07:22,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:07:22,242 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:22,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:22,243 INFO L82 PathProgramCache]: Analyzing trace with hash -979616740, now seen corresponding path program 1 times [2020-09-21 10:07:22,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:22,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865485833] [2020-09-21 10:07:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,744 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:07:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:07:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:07:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:07:22,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865485833] [2020-09-21 10:07:22,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:22,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:07:22,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933183806] [2020-09-21 10:07:22,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:07:22,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:22,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:07:22,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:07:22,913 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 8 states. [2020-09-21 10:07:23,343 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:23,739 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:24,059 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:24,366 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:25,191 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:07:27,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:27,020 INFO L93 Difference]: Finished difference Result 390 states and 482 transitions. [2020-09-21 10:07:27,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:07:27,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-09-21 10:07:27,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:27,025 INFO L225 Difference]: With dead ends: 390 [2020-09-21 10:07:27,025 INFO L226 Difference]: Without dead ends: 303 [2020-09-21 10:07:27,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:07:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-09-21 10:07:27,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 242. [2020-09-21 10:07:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-21 10:07:27,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2020-09-21 10:07:27,105 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 58 [2020-09-21 10:07:27,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:27,105 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2020-09-21 10:07:27,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:07:27,106 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2020-09-21 10:07:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-21 10:07:27,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:27,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:07:27,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:07:27,108 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:27,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1983050375, now seen corresponding path program 1 times [2020-09-21 10:07:27,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:27,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622385967] [2020-09-21 10:07:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:27,501 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:27,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:27,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:27,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:27,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:07:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:27,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:07:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:27,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:07:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:27,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 10:07:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:07:27,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622385967] [2020-09-21 10:07:27,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:27,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:07:27,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204684644] [2020-09-21 10:07:27,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:07:27,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:27,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:07:27,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:07:27,609 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand 8 states. [2020-09-21 10:07:28,080 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:29,590 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:29,951 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:30,258 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:30,570 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:31,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:31,320 INFO L93 Difference]: Finished difference Result 741 states and 971 transitions. [2020-09-21 10:07:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 10:07:31,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-21 10:07:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:31,327 INFO L225 Difference]: With dead ends: 741 [2020-09-21 10:07:31,327 INFO L226 Difference]: Without dead ends: 523 [2020-09-21 10:07:31,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:07:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-09-21 10:07:31,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 457. [2020-09-21 10:07:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-09-21 10:07:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 563 transitions. [2020-09-21 10:07:31,459 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 563 transitions. Word has length 63 [2020-09-21 10:07:31,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:31,460 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 563 transitions. [2020-09-21 10:07:31,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:07:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 563 transitions. [2020-09-21 10:07:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 10:07:31,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:31,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:07:31,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:07:31,464 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:31,464 INFO L82 PathProgramCache]: Analyzing trace with hash -572770771, now seen corresponding path program 1 times [2020-09-21 10:07:31,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:31,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605952340] [2020-09-21 10:07:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:31,799 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:31,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:31,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:31,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:31,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:07:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:07:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:31,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:07:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:31,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 10:07:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:31,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 10:07:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:07:31,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605952340] [2020-09-21 10:07:31,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:31,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:07:31,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201006891] [2020-09-21 10:07:31,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:07:31,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:31,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:07:31,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:07:31,909 INFO L87 Difference]: Start difference. First operand 457 states and 563 transitions. Second operand 6 states. [2020-09-21 10:07:32,250 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:33,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:33,200 INFO L93 Difference]: Finished difference Result 806 states and 1047 transitions. [2020-09-21 10:07:33,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:07:33,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-21 10:07:33,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:33,205 INFO L225 Difference]: With dead ends: 806 [2020-09-21 10:07:33,205 INFO L226 Difference]: Without dead ends: 373 [2020-09-21 10:07:33,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:07:33,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-09-21 10:07:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 323. [2020-09-21 10:07:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-21 10:07:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 374 transitions. [2020-09-21 10:07:33,272 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 374 transitions. Word has length 67 [2020-09-21 10:07:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:33,273 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 374 transitions. [2020-09-21 10:07:33,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:07:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 374 transitions. [2020-09-21 10:07:33,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-21 10:07:33,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:33,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:07:33,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:07:33,275 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:33,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:33,275 INFO L82 PathProgramCache]: Analyzing trace with hash 935934029, now seen corresponding path program 1 times [2020-09-21 10:07:33,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:33,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569315525] [2020-09-21 10:07:33,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:07:33,348 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:07:33,349 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:07:33,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:07:33,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:07:33 BoogieIcfgContainer [2020-09-21 10:07:33,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:07:33,393 INFO L168 Benchmark]: Toolchain (without parser) took 17400.79 ms. Allocated memory was 140.5 MB in the beginning and 475.5 MB in the end (delta: 335.0 MB). Free memory was 103.1 MB in the beginning and 304.2 MB in the end (delta: -201.0 MB). Peak memory consumption was 134.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:33,393 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:07:33,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.70 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 171.8 MB in the end (delta: -69.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:33,395 INFO L168 Benchmark]: Boogie Preprocessor took 98.18 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 167.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:33,396 INFO L168 Benchmark]: RCFGBuilder took 1408.17 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 167.7 MB in the beginning and 195.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:33,397 INFO L168 Benchmark]: TraceAbstraction took 15126.56 ms. Allocated memory was 235.9 MB in the beginning and 475.5 MB in the end (delta: 239.6 MB). Free memory was 195.5 MB in the beginning and 304.2 MB in the end (delta: -108.7 MB). Peak memory consumption was 130.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:33,401 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.70 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 171.8 MB in the end (delta: -69.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.18 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 167.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1408.17 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 167.7 MB in the beginning and 195.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15126.56 ms. Allocated memory was 235.9 MB in the beginning and 475.5 MB in the end (delta: 239.6 MB). Free memory was 195.5 MB in the beginning and 304.2 MB in the end (delta: -108.7 MB). Peak memory consumption was 130.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 927]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L522] int retValue_acc ; [L523] int tmp ; [L527] FCALL select_helpers() [L528] FCALL select_features() [L529] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L529] RET, EXPR valid_product() [L529] tmp = valid_product() [L531] COND TRUE \read(tmp) [L533] FCALL setup() [L534] CALL runTest() [L516] CALL test() [L766] int splverifierCounter ; [L767] int tmp ; [L768] int tmp___0 ; [L769] int tmp___1 ; [L770] int tmp___2 ; [L773] splverifierCounter = 0 [L775] COND TRUE 1 [L777] COND TRUE splverifierCounter < 4 [L783] tmp = __VERIFIER_nondet_int() [L785] COND TRUE \read(tmp) [L787] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L787] RET waterRise() [L793] tmp___0 = __VERIFIER_nondet_int() [L795] COND FALSE !(\read(tmp___0)) [L803] tmp___2 = __VERIFIER_nondet_int() [L805] COND FALSE !(\read(tmp___2)) [L811] tmp___1 = __VERIFIER_nondet_int() [L813] COND TRUE \read(tmp___1) [L815] CALL stopSystem() [L745] COND FALSE !(\read(pumpRunning)) [L752] systemActive = 0 [L815] RET stopSystem() [L822] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND FALSE !(\read(systemActive)) [L612] CALL __utac_acc__Specification3_spec__1() [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; [L556] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L556] RET, EXPR isMethaneLevelCritical() [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) [L562] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L562] RET, EXPR getWaterLevel() [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 [L566] CALL, EXPR isPumpRunning() [L678] int retValue_acc ; [L681] retValue_acc = pumpRunning [L682] return (retValue_acc); [L566] RET, EXPR isPumpRunning() [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) [L572] CALL __automaton_fail() [L927] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 533 SDtfs, 843 SDslu, 385 SDs, 0 SdLazy, 1890 SolverSat, 558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 236 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...