/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:39:21,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:39:21,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:39:21,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:39:21,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:39:21,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:39:21,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:39:21,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:39:21,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:39:21,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:39:21,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:39:21,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:39:21,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:39:21,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:39:21,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:39:21,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:39:21,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:39:21,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:39:21,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:39:21,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:39:21,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:39:21,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:39:21,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:39:21,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:39:21,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:39:21,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:39:21,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:39:21,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:39:21,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:39:21,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:39:21,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:39:21,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:39:21,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:39:21,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:39:21,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:39:21,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:39:21,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:39:21,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:39:21,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:39:21,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:39:21,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:39:21,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 06:39:21,410 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:39:21,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:39:21,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:39:21,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:39:21,413 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:39:21,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:39:21,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:39:21,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:39:21,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:39:21,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:39:21,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:39:21,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:39:21,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:39:21,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:39:21,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:39:21,417 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:39:21,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:39:21,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:39:21,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:39:21,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:39:21,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:39:21,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:39:21,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:39:21,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:39:21,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:39:21,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:39:21,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:39:21,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:39:21,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:39:21,424 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=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:39:21,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:39:21,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:39:21,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:39:21,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:39:21,788 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:39:21,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-19 06:39:21,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea84da006/17e1e8b699c74391bb1b31ea6e278cfe/FLAG26d45b453 [2020-08-19 06:39:22,392 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:39:22,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-19 06:39:22,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea84da006/17e1e8b699c74391bb1b31ea6e278cfe/FLAG26d45b453 [2020-08-19 06:39:22,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea84da006/17e1e8b699c74391bb1b31ea6e278cfe [2020-08-19 06:39:22,674 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:39:22,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:39:22,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:39:22,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:39:22,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:39:22,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:39:22" (1/1) ... [2020-08-19 06:39:22,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4288bc19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:22, skipping insertion in model container [2020-08-19 06:39:22,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:39:22" (1/1) ... [2020-08-19 06:39:22,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:39:22,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:39:23,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:39:23,266 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:39:23,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:39:23,399 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:39:23,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:23 WrapperNode [2020-08-19 06:39:23,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:39:23,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:39:23,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:39:23,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:39:23,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:23" (1/1) ... [2020-08-19 06:39:23,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:23" (1/1) ... [2020-08-19 06:39:23,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:23" (1/1) ... [2020-08-19 06:39:23,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:23" (1/1) ... [2020-08-19 06:39:23,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:23" (1/1) ... [2020-08-19 06:39:23,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:23" (1/1) ... [2020-08-19 06:39:23,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:23" (1/1) ... [2020-08-19 06:39:23,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:39:23,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:39:23,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:39:23,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:39:23,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:39:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:39:23,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:39:23,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:39:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:39:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:39:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:39:23,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:39:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:39:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:39:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:39:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:39:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:39:23,600 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:39:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:39:23,601 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:39:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:39:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-19 06:39:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-19 06:39:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-19 06:39:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-19 06:39:23,602 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-19 06:39:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-19 06:39:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:39:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-19 06:39:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-19 06:39:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:39:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:39:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:39:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:39:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:39:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:39:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 06:39:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 06:39:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 06:39:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:39:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:39:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:39:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:39:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:39:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:39:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:39:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:39:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:39:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:39:23,609 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:39:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:39:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:39:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 06:39:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:39:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:39:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:39:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:39:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:39:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:39:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:39:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:39:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:39:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:39:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:39:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:39:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:39:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:39:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:39:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:39:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:39:23,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:39:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:39:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:39:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:39:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:39:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:39:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:39:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:39:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:39:23,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:39:23,618 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 06:39:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 06:39:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:39:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:39:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:39:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:39:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 06:39:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:39:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:39:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:39:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:39:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:39:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-19 06:39:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:39:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-19 06:39:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-19 06:39:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 06:39:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-19 06:39:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-19 06:39:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:39:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-19 06:39:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-19 06:39:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-19 06:39:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:39:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:39:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:39:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:39:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:39:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:39:24,757 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:39:24,757 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:39:24,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:39:24 BoogieIcfgContainer [2020-08-19 06:39:24,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:39:24,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:39:24,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:39:24,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:39:24,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:39:22" (1/3) ... [2020-08-19 06:39:24,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3702f9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:39:24, skipping insertion in model container [2020-08-19 06:39:24,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:23" (2/3) ... [2020-08-19 06:39:24,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3702f9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:39:24, skipping insertion in model container [2020-08-19 06:39:24,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:39:24" (3/3) ... [2020-08-19 06:39:24,772 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_productSimulator.cil.c [2020-08-19 06:39:24,783 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:39:24,793 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:39:24,808 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:39:24,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:39:24,836 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:39:24,836 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:39:24,836 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:39:24,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:39:24,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:39:24,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:39:24,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:39:24,863 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-08-19 06:39:24,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 06:39:24,877 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:24,879 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:24,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:24,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:24,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1384301403, now seen corresponding path program 1 times [2020-08-19 06:39:24,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:24,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849676323] [2020-08-19 06:39:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,783 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:39:25,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:39:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:39:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:39:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:39:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:39:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 06:39:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:39:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:39:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 06:39:25,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849676323] [2020-08-19 06:39:25,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:25,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:39:25,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959517093] [2020-08-19 06:39:26,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:39:26,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:26,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:39:26,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:39:26,020 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 5 states. [2020-08-19 06:39:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:28,405 INFO L93 Difference]: Finished difference Result 448 states and 591 transitions. [2020-08-19 06:39:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:39:28,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-19 06:39:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:28,425 INFO L225 Difference]: With dead ends: 448 [2020-08-19 06:39:28,426 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 06:39:28,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:39:28,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 06:39:28,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-19 06:39:28,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-19 06:39:28,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 252 transitions. [2020-08-19 06:39:28,558 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 252 transitions. Word has length 84 [2020-08-19 06:39:28,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:28,559 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 252 transitions. [2020-08-19 06:39:28,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:39:28,559 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 252 transitions. [2020-08-19 06:39:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-19 06:39:28,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:28,565 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:28,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:39:28,566 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:28,567 INFO L82 PathProgramCache]: Analyzing trace with hash 435784209, now seen corresponding path program 1 times [2020-08-19 06:39:28,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:28,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540543776] [2020-08-19 06:39:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:28,991 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:39:28,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:39:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:39:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:39:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:39:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:39:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 06:39:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 06:39:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 06:39:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 06:39:29,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540543776] [2020-08-19 06:39:29,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:29,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:39:29,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809813425] [2020-08-19 06:39:29,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:39:29,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:29,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:39:29,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:39:29,098 INFO L87 Difference]: Start difference. First operand 205 states and 252 transitions. Second operand 6 states. [2020-08-19 06:39:29,811 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-19 06:39:31,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:31,560 INFO L93 Difference]: Finished difference Result 372 states and 469 transitions. [2020-08-19 06:39:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:39:31,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-08-19 06:39:31,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:31,565 INFO L225 Difference]: With dead ends: 372 [2020-08-19 06:39:31,565 INFO L226 Difference]: Without dead ends: 238 [2020-08-19 06:39:31,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:39:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-19 06:39:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 196. [2020-08-19 06:39:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-08-19 06:39:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 240 transitions. [2020-08-19 06:39:31,635 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 240 transitions. Word has length 85 [2020-08-19 06:39:31,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:31,636 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 240 transitions. [2020-08-19 06:39:31,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:39:31,636 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 240 transitions. [2020-08-19 06:39:31,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 06:39:31,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:31,640 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:31,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:39:31,640 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:31,640 INFO L82 PathProgramCache]: Analyzing trace with hash 681264365, now seen corresponding path program 1 times [2020-08-19 06:39:31,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:31,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194149131] [2020-08-19 06:39:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,060 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:39:32,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:39:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:39:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:39:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:39:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:39:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 06:39:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:39:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 06:39:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 06:39:32,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194149131] [2020-08-19 06:39:32,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:32,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:39:32,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665306289] [2020-08-19 06:39:32,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:39:32,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:32,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:39:32,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:39:32,250 INFO L87 Difference]: Start difference. First operand 196 states and 240 transitions. Second operand 12 states. [2020-08-19 06:39:32,985 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:39:33,626 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-19 06:39:34,458 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-19 06:39:35,511 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:39:35,900 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-19 06:39:39,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:39,759 INFO L93 Difference]: Finished difference Result 643 states and 818 transitions. [2020-08-19 06:39:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 06:39:39,760 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2020-08-19 06:39:39,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:39,774 INFO L225 Difference]: With dead ends: 643 [2020-08-19 06:39:39,774 INFO L226 Difference]: Without dead ends: 488 [2020-08-19 06:39:39,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-19 06:39:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-19 06:39:39,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 397. [2020-08-19 06:39:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-19 06:39:39,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 497 transitions. [2020-08-19 06:39:39,945 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 497 transitions. Word has length 90 [2020-08-19 06:39:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:39,949 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 497 transitions. [2020-08-19 06:39:39,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:39:39,949 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 497 transitions. [2020-08-19 06:39:39,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-19 06:39:39,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:39,954 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:39,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:39:39,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:39,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:39,955 INFO L82 PathProgramCache]: Analyzing trace with hash -326319286, now seen corresponding path program 1 times [2020-08-19 06:39:39,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:39,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917142325] [2020-08-19 06:39:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,329 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:39:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:39:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:39:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:39:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:39:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:39:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 06:39:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 06:39:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 06:39:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 06:39:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 06:39:40,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917142325] [2020-08-19 06:39:40,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:40,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:39:40,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066890460] [2020-08-19 06:39:40,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:39:40,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:40,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:39:40,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:39:40,523 INFO L87 Difference]: Start difference. First operand 397 states and 497 transitions. Second operand 10 states. [2020-08-19 06:39:40,988 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:39:43,083 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 06:39:43,505 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 06:39:43,840 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-19 06:39:44,149 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:39:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:46,067 INFO L93 Difference]: Finished difference Result 1234 states and 1653 transitions. [2020-08-19 06:39:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:39:46,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-08-19 06:39:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:46,078 INFO L225 Difference]: With dead ends: 1234 [2020-08-19 06:39:46,079 INFO L226 Difference]: Without dead ends: 878 [2020-08-19 06:39:46,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:39:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-08-19 06:39:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 778. [2020-08-19 06:39:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-08-19 06:39:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 987 transitions. [2020-08-19 06:39:46,307 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 987 transitions. Word has length 96 [2020-08-19 06:39:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:46,308 INFO L479 AbstractCegarLoop]: Abstraction has 778 states and 987 transitions. [2020-08-19 06:39:46,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:39:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 987 transitions. [2020-08-19 06:39:46,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-19 06:39:46,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:46,312 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:46,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:39:46,312 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:46,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:46,313 INFO L82 PathProgramCache]: Analyzing trace with hash 635729360, now seen corresponding path program 1 times [2020-08-19 06:39:46,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:46,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24531536] [2020-08-19 06:39:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,633 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-19 06:39:46,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 06:39:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:39:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 06:39:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 06:39:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:39:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 06:39:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:39:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 06:39:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 06:39:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 06:39:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 06:39:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 06:39:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-19 06:39:46,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24531536] [2020-08-19 06:39:46,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:46,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:39:46,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749194369] [2020-08-19 06:39:46,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:39:46,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:46,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:39:46,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:39:46,771 INFO L87 Difference]: Start difference. First operand 778 states and 987 transitions. Second operand 8 states. [2020-08-19 06:39:47,345 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-19 06:39:51,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:51,124 INFO L93 Difference]: Finished difference Result 1840 states and 2490 transitions. [2020-08-19 06:39:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 06:39:51,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-08-19 06:39:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:51,137 INFO L225 Difference]: With dead ends: 1840 [2020-08-19 06:39:51,138 INFO L226 Difference]: Without dead ends: 1103 [2020-08-19 06:39:51,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-08-19 06:39:51,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-08-19 06:39:51,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1024. [2020-08-19 06:39:51,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-08-19 06:39:51,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1298 transitions. [2020-08-19 06:39:51,376 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1298 transitions. Word has length 100 [2020-08-19 06:39:51,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:51,376 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1298 transitions. [2020-08-19 06:39:51,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:39:51,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1298 transitions. [2020-08-19 06:39:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-19 06:39:51,386 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:51,386 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:51,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:39:51,387 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:51,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:51,387 INFO L82 PathProgramCache]: Analyzing trace with hash -950611836, now seen corresponding path program 1 times [2020-08-19 06:39:51,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:51,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100373184] [2020-08-19 06:39:51,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:39:51,477 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:39:51,478 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:39:51,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:39:51,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:39:51 BoogieIcfgContainer [2020-08-19 06:39:51,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:39:51,529 INFO L168 Benchmark]: Toolchain (without parser) took 28851.07 ms. Allocated memory was 143.7 MB in the beginning and 597.2 MB in the end (delta: 453.5 MB). Free memory was 104.6 MB in the beginning and 499.6 MB in the end (delta: -395.0 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:39:51,531 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 124.0 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:39:51,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.96 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 104.4 MB in the beginning and 169.4 MB in the end (delta: -65.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:39:51,540 INFO L168 Benchmark]: Boogie Preprocessor took 96.52 ms. Allocated memory is still 205.0 MB. Free memory was 169.4 MB in the beginning and 165.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:39:51,541 INFO L168 Benchmark]: RCFGBuilder took 1266.39 ms. Allocated memory was 205.0 MB in the beginning and 231.7 MB in the end (delta: 26.7 MB). Free memory was 165.1 MB in the beginning and 169.4 MB in the end (delta: -4.3 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:39:51,542 INFO L168 Benchmark]: TraceAbstraction took 26760.04 ms. Allocated memory was 231.7 MB in the beginning and 597.2 MB in the end (delta: 365.4 MB). Free memory was 169.4 MB in the beginning and 499.6 MB in the end (delta: -330.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:39:51,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 124.0 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 722.96 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 104.4 MB in the beginning and 169.4 MB in the end (delta: -65.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.52 ms. Allocated memory is still 205.0 MB. Free memory was 169.4 MB in the beginning and 165.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1266.39 ms. Allocated memory was 205.0 MB in the beginning and 231.7 MB in the end (delta: 26.7 MB). Free memory was 165.1 MB in the beginning and 169.4 MB in the end (delta: -4.3 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26760.04 ms. Allocated memory was 231.7 MB in the beginning and 597.2 MB in the end (delta: 365.4 MB). Free memory was 169.4 MB in the beginning and 499.6 MB in the end (delta: -330.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1022]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L510] int __SELECTED_FEATURE_base ; [L511] int __SELECTED_FEATURE_highWaterSensor ; [L512] int __SELECTED_FEATURE_lowWaterSensor ; [L513] int __SELECTED_FEATURE_methaneQuery ; [L514] int __SELECTED_FEATURE_methaneAlarm ; [L515] int __SELECTED_FEATURE_stopCommand ; [L516] int __SELECTED_FEATURE_startCommand ; [L517] int __GUIDSL_ROOT_PRODUCTION ; [L605] int pumpRunning = 0; [L606] int systemActive = 1; [L1027] int waterLevel = 1; [L1028] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] CALL select_helpers() [L968] __GUIDSL_ROOT_PRODUCTION = 1 [L492] RET select_helpers() [L493] CALL select_features() [L953] __SELECTED_FEATURE_base = 1 [L954] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L954] RET, EXPR select_one() [L954] __SELECTED_FEATURE_highWaterSensor = select_one() [L955] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L955] RET, EXPR select_one() [L955] __SELECTED_FEATURE_lowWaterSensor = select_one() [L956] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L956] RET, EXPR select_one() [L956] __SELECTED_FEATURE_methaneQuery = select_one() [L957] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L957] RET, EXPR select_one() [L957] __SELECTED_FEATURE_methaneAlarm = select_one() [L958] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L958] RET, EXPR select_one() [L958] __SELECTED_FEATURE_stopCommand = select_one() [L959] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L959] RET, EXPR select_one() [L959] __SELECTED_FEATURE_startCommand = select_one() [L493] RET select_features() [L494] CALL, EXPR valid_product() [L973] int retValue_acc ; [L976] retValue_acc = __SELECTED_FEATURE_base [L977] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L521] int splverifierCounter ; [L522] int tmp ; [L523] int tmp___0 ; [L524] int tmp___1 ; [L525] int tmp___2 ; [L528] splverifierCounter = 0 [L530] COND TRUE 1 [L532] COND TRUE splverifierCounter < 4 [L538] tmp = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp) [L542] CALL waterRise() [L1045] COND TRUE waterLevel < 2 [L1046] waterLevel = waterLevel + 1 [L542] RET waterRise() [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___0)) [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND FALSE !(\read(tmp___2)) [L570] tmp___1 = __VERIFIER_nondet_int() [L572] COND TRUE \read(tmp___1) [L573] COND TRUE \read(__SELECTED_FEATURE_stopCommand) [L575] CALL stopSystem() [L917] COND FALSE !(\read(pumpRunning)) [L924] systemActive = 0 [L575] RET stopSystem() [L585] CALL timeShift() [L613] COND FALSE !(\read(pumpRunning)) [L620] COND FALSE !(\read(systemActive)) [L628] CALL __utac_acc__Specification3_spec__1() [L985] int tmp ; [L986] int tmp___0 ; [L987] int tmp___1 ; [L991] CALL, EXPR isMethaneLevelCritical() [L1066] int retValue_acc ; [L1069] retValue_acc = methaneLevelCritical [L1070] return (retValue_acc); [L991] RET, EXPR isMethaneLevelCritical() [L991] tmp = isMethaneLevelCritical() [L993] COND FALSE !(\read(tmp)) [L997] CALL, EXPR getWaterLevel() [L1098] int retValue_acc ; [L1101] retValue_acc = waterLevel [L1102] return (retValue_acc); [L997] RET, EXPR getWaterLevel() [L997] tmp___0 = getWaterLevel() [L999] COND TRUE tmp___0 == 2 [L1001] CALL, EXPR isPumpRunning() [L831] int retValue_acc ; [L834] retValue_acc = pumpRunning [L835] return (retValue_acc); [L1001] RET, EXPR isPumpRunning() [L1001] tmp___1 = isPumpRunning() [L1003] COND FALSE !(\read(tmp___1)) [L1007] CALL __automaton_fail() [L1022] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 301 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.6s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 22.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 845 SDtfs, 3115 SDslu, 268 SDs, 0 SdLazy, 4684 SolverSat, 2606 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1024occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 361 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 167384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 225/225 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...