/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -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 20:52:16,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:52:16,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:52:16,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:52:16,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:52:16,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:52:16,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:52:16,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:52:16,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:52:16,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:52:16,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:52:16,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:52:16,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:52:16,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:52:16,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:52:16,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:52:16,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:52:16,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:52:16,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:52:16,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:52:16,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:52:16,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:52:16,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:52:16,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:52:16,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:52:16,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:52:16,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:52:16,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:52:16,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:52:16,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:52:16,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:52:16,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:52:16,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:52:16,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:52:16,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:52:16,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:52:16,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:52:16,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:52:16,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:52:16,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:52:16,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:52:16,453 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 20:52:16,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:52:16,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:52:16,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:52:16,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:52:16,498 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:52:16,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:52:16,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:52:16,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:52:16,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:52:16,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:52:16,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:52:16,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:52:16,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:52:16,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:52:16,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:52:16,502 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:52:16,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:52:16,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:52:16,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:52:16,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:52:16,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:52:16,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:52:16,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:52:16,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:52:16,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:52:16,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:52:16,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:52:16,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:52:16,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:52:16,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:52:16,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:52:16,801 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:52:16,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:52:16,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:52:16,806 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:52:16,807 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-18 20:52:16,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eecc0b940/9d2ca105b6294ce3a8dfebc9d9e5298d/FLAGbac9d5b5e [2020-08-18 20:52:17,396 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:52:17,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-18 20:52:17,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eecc0b940/9d2ca105b6294ce3a8dfebc9d9e5298d/FLAGbac9d5b5e [2020-08-18 20:52:17,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eecc0b940/9d2ca105b6294ce3a8dfebc9d9e5298d [2020-08-18 20:52:17,693 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:52:17,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:52:17,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:52:17,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:52:17,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:52:17,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:52:17" (1/1) ... [2020-08-18 20:52:17,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265a33a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:52:17, skipping insertion in model container [2020-08-18 20:52:17,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:52:17" (1/1) ... [2020-08-18 20:52:17,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:52:17,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:52:18,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:52:18,088 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:52:18,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:52:18,293 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:52:18,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:52:18 WrapperNode [2020-08-18 20:52:18,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:52:18,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:52:18,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:52:18,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:52:18,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:52:18" (1/1) ... [2020-08-18 20:52:18,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:52:18" (1/1) ... [2020-08-18 20:52:18,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:52:18" (1/1) ... [2020-08-18 20:52:18,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:52:18" (1/1) ... [2020-08-18 20:52:18,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:52:18" (1/1) ... [2020-08-18 20:52:18,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:52:18" (1/1) ... [2020-08-18 20:52:18,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:52:18" (1/1) ... [2020-08-18 20:52:18,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:52:18,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:52:18,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:52:18,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:52:18,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:52:18" (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 20:52:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:52:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:52:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:52:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:52:18,462 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:52:18,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:52:18,462 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:52:18,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:52:18,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:52:18,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:52:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:52:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:52:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:52:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:52:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:52:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:52:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:52:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:52:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:52:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:52:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:52:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:52:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:52:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:52:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:52:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:52:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:52:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:52:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:52:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:52:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:52:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:52:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:52:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 20:52:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:52:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:52:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:52:18,472 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:52:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:52:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:52:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:52:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:52:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:52:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:52:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:52:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:52:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:52:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:52:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:52:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:52:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:52:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:52:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:52:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:52:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:52:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:52:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:52:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:52:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:52:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:52:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:52:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:52:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:52:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:52:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:52:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:52:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:52:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:52:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:52:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:52:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:52:18,478 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:52:18,478 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:52:18,478 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:52:18,479 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:52:18,479 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:52:18,479 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:52:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:52:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:52:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:52:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:52:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 20:52:18,480 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:52:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:52:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:52:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:52:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:52:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:52:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:52:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:52:19,455 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:52:19,455 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:52:19,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:52:19 BoogieIcfgContainer [2020-08-18 20:52:19,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:52:19,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:52:19,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:52:19,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:52:19,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:52:17" (1/3) ... [2020-08-18 20:52:19,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9b8b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:52:19, skipping insertion in model container [2020-08-18 20:52:19,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:52:18" (2/3) ... [2020-08-18 20:52:19,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9b8b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:52:19, skipping insertion in model container [2020-08-18 20:52:19,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:52:19" (3/3) ... [2020-08-18 20:52:19,474 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-08-18 20:52:19,484 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:52:19,494 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:52:19,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:52:19,524 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:52:19,524 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:52:19,524 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:52:19,524 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:52:19,525 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:52:19,525 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:52:19,525 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:52:19,525 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:52:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-08-18 20:52:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 20:52:19,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:52:19,557 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 20:52:19,558 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:52:19,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:52:19,564 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-08-18 20:52:19,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:52:19,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910900555] [2020-08-18 20:52:19,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:52:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:20,229 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:52:20,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:52:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:52:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:20,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:52:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:52:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:20,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:52:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:20,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:52:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:20,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:52:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:20,355 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 20:52:20,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910900555] [2020-08-18 20:52:20,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:52:20,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:52:20,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503522437] [2020-08-18 20:52:20,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:52:20,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:52:20,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:52:20,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:52:20,393 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-08-18 20:52:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:52:21,384 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-18 20:52:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:52:21,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 20:52:21,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:52:21,400 INFO L225 Difference]: With dead ends: 258 [2020-08-18 20:52:21,400 INFO L226 Difference]: Without dead ends: 140 [2020-08-18 20:52:21,405 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 20:52:21,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-18 20:52:21,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-18 20:52:21,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-18 20:52:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-18 20:52:21,486 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-18 20:52:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:52:21,487 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-18 20:52:21,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:52:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-18 20:52:21,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 20:52:21,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:52:21,490 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 20:52:21,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:52:21,491 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:52:21,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:52:21,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-08-18 20:52:21,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:52:21,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005174057] [2020-08-18 20:52:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:52:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:21,802 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:52:21,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:52:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:21,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:52:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:21,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:52:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:21,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:52:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:21,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:52:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:21,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:52:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:21,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:52:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:21,843 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 20:52:21,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005174057] [2020-08-18 20:52:21,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:52:21,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:52:21,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414045838] [2020-08-18 20:52:21,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:52:21,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:52:21,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:52:21,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:52:21,847 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-18 20:52:22,270 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:52:22,888 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-18 20:52:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:52:22,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 20:52:22,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:52:22,892 INFO L225 Difference]: With dead ends: 187 [2020-08-18 20:52:22,893 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 20:52:22,894 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 20:52:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 20:52:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 20:52:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 20:52:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-18 20:52:22,927 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-18 20:52:22,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:52:22,928 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-18 20:52:22,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:52:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-18 20:52:22,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:52:22,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:52:22,930 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 20:52:22,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:52:22,931 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:52:22,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:52:22,931 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-08-18 20:52:22,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:52:22,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506804746] [2020-08-18 20:52:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:52:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:23,221 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:52:23,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:52:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:23,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:52:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:23,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:52:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:23,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:52:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:23,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:52:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:23,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:52:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:23,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:52:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:23,283 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 20:52:23,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506804746] [2020-08-18 20:52:23,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:52:23,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:52:23,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652951210] [2020-08-18 20:52:23,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:52:23,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:52:23,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:52:23,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:52:23,285 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-18 20:52:23,646 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:52:23,953 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:52:24,180 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:52:24,430 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:52:25,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:52:25,333 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-18 20:52:25,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:52:25,333 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 20:52:25,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:52:25,337 INFO L225 Difference]: With dead ends: 200 [2020-08-18 20:52:25,337 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 20:52:25,338 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 20:52:25,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 20:52:25,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 20:52:25,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 20:52:25,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-18 20:52:25,371 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-18 20:52:25,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:52:25,372 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-18 20:52:25,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:52:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-18 20:52:25,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 20:52:25,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:52:25,374 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 20:52:25,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:52:25,374 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:52:25,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:52:25,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-08-18 20:52:25,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:52:25,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173440887] [2020-08-18 20:52:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:52:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:25,684 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:52:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:52:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:25,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:52:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:25,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:52:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:52:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:25,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:52:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:25,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:52:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:25,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:52:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:25,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 20:52:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 20:52:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:25,775 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 20:52:25,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173440887] [2020-08-18 20:52:25,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:52:25,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:52:25,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660830103] [2020-08-18 20:52:25,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:52:25,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:52:25,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:52:25,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:52:25,778 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-18 20:52:26,068 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:52:27,119 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:27,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:52:27,555 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-18 20:52:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:52:27,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 20:52:27,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:52:27,560 INFO L225 Difference]: With dead ends: 288 [2020-08-18 20:52:27,561 INFO L226 Difference]: Without dead ends: 212 [2020-08-18 20:52:27,562 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 20:52:27,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-18 20:52:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-18 20:52:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 20:52:27,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-18 20:52:27,609 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-18 20:52:27,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:52:27,610 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-18 20:52:27,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:52:27,610 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-18 20:52:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 20:52:27,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:52:27,612 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 20:52:27,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:52:27,613 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:52:27,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:52:27,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-08-18 20:52:27,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:52:27,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506171119] [2020-08-18 20:52:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:52:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:27,896 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:52:27,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:52:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:52:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:27,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:52:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:52:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:27,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:52:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:27,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:52:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:27,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:52:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:27,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:52:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:27,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:52:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:27,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:52:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:27,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 20:52:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:28,009 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 20:52:28,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506171119] [2020-08-18 20:52:28,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:52:28,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:52:28,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980570808] [2020-08-18 20:52:28,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:52:28,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:52:28,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:52:28,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:52:28,013 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-08-18 20:52:28,335 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:52:29,346 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:52:29,595 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:52:29,822 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:52:30,037 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:52:30,323 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:52:30,916 INFO L93 Difference]: Finished difference Result 505 states and 630 transitions. [2020-08-18 20:52:30,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:52:30,922 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-18 20:52:30,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:52:30,927 INFO L225 Difference]: With dead ends: 505 [2020-08-18 20:52:30,927 INFO L226 Difference]: Without dead ends: 360 [2020-08-18 20:52:30,929 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 20:52:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-18 20:52:30,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 293. [2020-08-18 20:52:30,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-18 20:52:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-08-18 20:52:31,001 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 74 [2020-08-18 20:52:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:52:31,001 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-08-18 20:52:31,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:52:31,002 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-08-18 20:52:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 20:52:31,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:52:31,004 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 20:52:31,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:52:31,004 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:52:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:52:31,005 INFO L82 PathProgramCache]: Analyzing trace with hash -133122882, now seen corresponding path program 1 times [2020-08-18 20:52:31,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:52:31,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170212045] [2020-08-18 20:52:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:52:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,285 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:52:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:52:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:52:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:52:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:52:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:52:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:52:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:52:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:52:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:52:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:52:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 20:52:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:52:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:31,371 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 20:52:31,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170212045] [2020-08-18 20:52:31,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:52:31,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:52:31,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143338473] [2020-08-18 20:52:31,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:52:31,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:52:31,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:52:31,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:52:31,373 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 9 states. [2020-08-18 20:52:31,761 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:52:32,739 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:52:32,945 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:52:33,205 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:52:33,441 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:52:33,669 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:34,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:52:34,243 INFO L93 Difference]: Finished difference Result 402 states and 512 transitions. [2020-08-18 20:52:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:52:34,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 20:52:34,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:52:34,249 INFO L225 Difference]: With dead ends: 402 [2020-08-18 20:52:34,249 INFO L226 Difference]: Without dead ends: 399 [2020-08-18 20:52:34,250 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 20:52:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-18 20:52:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 293. [2020-08-18 20:52:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-18 20:52:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-08-18 20:52:34,314 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 78 [2020-08-18 20:52:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:52:34,314 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-08-18 20:52:34,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:52:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-08-18 20:52:34,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 20:52:34,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:52:34,316 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 20:52:34,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:52:34,316 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:52:34,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:52:34,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-08-18 20:52:34,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:52:34,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240785641] [2020-08-18 20:52:34,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:52:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,558 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:52:34,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:52:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:52:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:52:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:52:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:52:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:52:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:52:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:52:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:52:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:52:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 20:52:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 20:52:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:34,724 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 20:52:34,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240785641] [2020-08-18 20:52:34,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:52:34,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:52:34,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616884902] [2020-08-18 20:52:34,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:52:34,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:52:34,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:52:34,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:52:34,727 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 9 states. [2020-08-18 20:52:35,569 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:52:35,816 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:52:36,043 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:36,262 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:37,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:52:37,054 INFO L93 Difference]: Finished difference Result 672 states and 837 transitions. [2020-08-18 20:52:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:52:37,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-18 20:52:37,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:52:37,058 INFO L225 Difference]: With dead ends: 672 [2020-08-18 20:52:37,059 INFO L226 Difference]: Without dead ends: 403 [2020-08-18 20:52:37,060 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 20:52:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-08-18 20:52:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 303. [2020-08-18 20:52:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-18 20:52:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2020-08-18 20:52:37,114 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 79 [2020-08-18 20:52:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:52:37,115 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2020-08-18 20:52:37,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:52:37,115 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2020-08-18 20:52:37,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 20:52:37,116 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:52:37,117 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 20:52:37,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:52:37,117 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:52:37,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:52:37,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-08-18 20:52:37,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:52:37,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712758551] [2020-08-18 20:52:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:52:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,373 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:52:37,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:52:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:52:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:52:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:52:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:52:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:52:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:52:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:52:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:52:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:52:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 20:52:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 20:52:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:37,493 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 20:52:37,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712758551] [2020-08-18 20:52:37,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:52:37,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 20:52:37,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880626872] [2020-08-18 20:52:37,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:52:37,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:52:37,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:52:37,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:52:37,495 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand 11 states. [2020-08-18 20:52:38,052 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:38,303 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:38,521 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:39,099 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:39,337 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:39,564 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:52:40,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:52:40,414 INFO L93 Difference]: Finished difference Result 696 states and 875 transitions. [2020-08-18 20:52:40,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:52:40,415 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-18 20:52:40,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:52:40,418 INFO L225 Difference]: With dead ends: 696 [2020-08-18 20:52:40,418 INFO L226 Difference]: Without dead ends: 417 [2020-08-18 20:52:40,420 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 20:52:40,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-18 20:52:40,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 311. [2020-08-18 20:52:40,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-18 20:52:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-08-18 20:52:40,477 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 79 [2020-08-18 20:52:40,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:52:40,477 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-08-18 20:52:40,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 20:52:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-08-18 20:52:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 20:52:40,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:52:40,479 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 20:52:40,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:52:40,480 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:52:40,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:52:40,480 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-08-18 20:52:40,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:52:40,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918726590] [2020-08-18 20:52:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:52:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,748 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:52:40,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:52:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:52:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:52:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:52:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:52:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:52:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:52:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:52:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:52:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:52:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 20:52:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 20:52:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:52:40,886 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 20:52:40,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918726590] [2020-08-18 20:52:40,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:52:40,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:52:40,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266056570] [2020-08-18 20:52:40,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:52:40,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:52:40,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:52:40,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:52:40,889 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 7 states. [2020-08-18 20:52:41,500 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:52:41,975 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:52:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:52:43,724 INFO L93 Difference]: Finished difference Result 1018 states and 1317 transitions. [2020-08-18 20:52:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:52:43,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-08-18 20:52:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:52:43,732 INFO L225 Difference]: With dead ends: 1018 [2020-08-18 20:52:43,732 INFO L226 Difference]: Without dead ends: 731 [2020-08-18 20:52:43,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:52:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-18 20:52:43,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2020-08-18 20:52:43,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-08-18 20:52:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 719 transitions. [2020-08-18 20:52:43,878 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 719 transitions. Word has length 79 [2020-08-18 20:52:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:52:43,880 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 719 transitions. [2020-08-18 20:52:43,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:52:43,880 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 719 transitions. [2020-08-18 20:52:43,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:52:43,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:52:43,885 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 20:52:43,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:52:43,886 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:52:43,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:52:43,886 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-08-18 20:52:43,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:52:43,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064890878] [2020-08-18 20:52:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:52:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:52:43,968 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:52:43,968 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:52:43,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:52:43,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:52:43 BoogieIcfgContainer [2020-08-18 20:52:43,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:52:43,997 INFO L168 Benchmark]: Toolchain (without parser) took 26302.81 ms. Allocated memory was 139.5 MB in the beginning and 622.9 MB in the end (delta: 483.4 MB). Free memory was 102.2 MB in the beginning and 574.9 MB in the end (delta: -472.8 MB). Peak memory consumption was 466.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:52:43,998 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:52:43,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.47 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 172.6 MB in the end (delta: -70.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:52:44,000 INFO L168 Benchmark]: Boogie Preprocessor took 105.38 ms. Allocated memory is still 202.9 MB. Free memory was 172.6 MB in the beginning and 168.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:52:44,001 INFO L168 Benchmark]: RCFGBuilder took 1064.92 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.5 MB in the beginning and 200.8 MB in the end (delta: -32.4 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:52:44,001 INFO L168 Benchmark]: TraceAbstraction took 24528.57 ms. Allocated memory was 235.9 MB in the beginning and 622.9 MB in the end (delta: 386.9 MB). Free memory was 199.4 MB in the beginning and 574.9 MB in the end (delta: -375.6 MB). Peak memory consumption was 466.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:52:44,005 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 598.47 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 172.6 MB in the end (delta: -70.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.38 ms. Allocated memory is still 202.9 MB. Free memory was 172.6 MB in the beginning and 168.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1064.92 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.5 MB in the beginning and 200.8 MB in the end (delta: -32.4 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24528.57 ms. Allocated memory was 235.9 MB in the beginning and 622.9 MB in the end (delta: 386.9 MB). Free memory was 199.4 MB in the beginning and 574.9 MB in the end (delta: -375.6 MB). Peak memory consumption was 466.8 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: 24.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 19.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 899 SDtfs, 1722 SDslu, 878 SDs, 0 SdLazy, 4213 SolverSat, 1157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.2s 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: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 621 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s 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...