/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=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:15:24,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:15:24,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:15:24,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:15:24,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:15:24,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:15:24,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:15:24,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:15:24,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:15:24,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:15:24,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:15:24,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:15:24,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:15:24,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:15:24,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:15:24,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:15:24,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:15:24,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:15:24,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:15:24,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:15:24,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:15:24,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:15:24,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:15:24,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:15:24,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:15:24,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:15:24,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:15:24,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:15:24,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:15:24,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:15:24,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:15:24,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:15:24,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:15:24,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:15:24,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:15:24,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:15:24,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:15:24,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:15:24,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:15:24,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:15:24,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:15:24,431 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 04:15:24,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:15:24,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:15:24,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:15:24,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:15:24,476 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:15:24,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:15:24,477 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:15:24,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:15:24,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:15:24,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:15:24,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:15:24,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:15:24,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:15:24,479 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:15:24,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:15:24,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:15:24,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:15:24,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:15:24,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:15:24,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:15:24,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:15:24,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:15:24,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:15:24,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:15:24,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:15:24,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:15:24,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:15:24,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:15:24,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:15:24,482 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=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:15:24,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:15:24,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:15:24,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:15:24,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:15:24,774 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:15:24,774 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-08-19 04:15:24,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2cde2ef/7a9a9244a6f24c5e91d894490c53cafd/FLAGf9491fafc [2020-08-19 04:15:25,388 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:15:25,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-08-19 04:15:25,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2cde2ef/7a9a9244a6f24c5e91d894490c53cafd/FLAGf9491fafc [2020-08-19 04:15:25,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2cde2ef/7a9a9244a6f24c5e91d894490c53cafd [2020-08-19 04:15:25,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:15:25,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:15:25,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:15:25,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:15:25,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:15:25,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:15:25" (1/1) ... [2020-08-19 04:15:25,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:25, skipping insertion in model container [2020-08-19 04:15:25,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:15:25" (1/1) ... [2020-08-19 04:15:25,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:15:25,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:15:26,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:15:26,286 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:15:26,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:15:26,432 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:15:26,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:26 WrapperNode [2020-08-19 04:15:26,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:15:26,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:15:26,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:15:26,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:15:26,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:26" (1/1) ... [2020-08-19 04:15:26,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:26" (1/1) ... [2020-08-19 04:15:26,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:26" (1/1) ... [2020-08-19 04:15:26,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:26" (1/1) ... [2020-08-19 04:15:26,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:26" (1/1) ... [2020-08-19 04:15:26,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:26" (1/1) ... [2020-08-19 04:15:26,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:26" (1/1) ... [2020-08-19 04:15:26,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:15:26,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:15:26,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:15:26,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:15:26,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:26" (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 04:15:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:15:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:15:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:15:26,583 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:15:26,583 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:15:26,583 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:15:26,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:15:26,584 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:15:26,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:15:26,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:15:26,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:15:26,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:15:26,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:15:26,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:15:26,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:15:26,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:15:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:15:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:15:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:15:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:15:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 04:15:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:15:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:15:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:15:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:15:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:15:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:15:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:15:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:15:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:15:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:15:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:15:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:15:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:15:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:15:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:15:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:15:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 04:15:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:15:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:15:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:15:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:15:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:15:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:15:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:15:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:15:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:15:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:15:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:15:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:15:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:15:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:15:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:15:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:15:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:15:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:15:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:15:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:15:26,595 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:15:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:15:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:15:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:15:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:15:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:15:26,596 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:15:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:15:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:15:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:15:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:15:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:15:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:15:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:15:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 04:15:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:15:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:15:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:15:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:15:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:15:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:15:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:15:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:15:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 04:15:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:15:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:15:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:15:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:15:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:15:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:15:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:15:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:15:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:15:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:15:27,591 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:15:27,591 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:15:27,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:15:27 BoogieIcfgContainer [2020-08-19 04:15:27,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:15:27,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:15:27,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:15:27,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:15:27,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:15:25" (1/3) ... [2020-08-19 04:15:27,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b59603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:15:27, skipping insertion in model container [2020-08-19 04:15:27,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:26" (2/3) ... [2020-08-19 04:15:27,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b59603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:15:27, skipping insertion in model container [2020-08-19 04:15:27,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:15:27" (3/3) ... [2020-08-19 04:15:27,605 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2020-08-19 04:15:27,616 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:15:27,624 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:15:27,638 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:15:27,663 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:15:27,663 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:15:27,664 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:15:27,664 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:15:27,664 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:15:27,664 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:15:27,664 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:15:27,665 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:15:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2020-08-19 04:15:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 04:15:27,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:27,701 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] [2020-08-19 04:15:27,701 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:27,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1708045389, now seen corresponding path program 1 times [2020-08-19 04:15:27,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:27,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249006732] [2020-08-19 04:15:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,370 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:28,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:15:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:15:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:15:28,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249006732] [2020-08-19 04:15:28,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:28,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:15:28,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013268978] [2020-08-19 04:15:28,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:15:28,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:28,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:15:28,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:15:28,536 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 3 states. [2020-08-19 04:15:29,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:29,641 INFO L93 Difference]: Finished difference Result 290 states and 375 transitions. [2020-08-19 04:15:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:15:29,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 04:15:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:29,657 INFO L225 Difference]: With dead ends: 290 [2020-08-19 04:15:29,658 INFO L226 Difference]: Without dead ends: 157 [2020-08-19 04:15:29,662 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 [2020-08-19 04:15:29,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-19 04:15:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2020-08-19 04:15:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-19 04:15:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-19 04:15:29,809 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 46 [2020-08-19 04:15:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:29,811 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-19 04:15:29,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:15:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-19 04:15:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 04:15:29,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:29,816 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] [2020-08-19 04:15:29,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:15:29,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1677032245, now seen corresponding path program 1 times [2020-08-19 04:15:29,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:29,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827621843] [2020-08-19 04:15:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,240 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:30,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:15:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:15:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:15:30,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827621843] [2020-08-19 04:15:30,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:30,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:15:30,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737709284] [2020-08-19 04:15:30,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:15:30,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:30,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:15:30,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:15:30,283 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 4 states. [2020-08-19 04:15:30,689 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:31,447 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2020-08-19 04:15:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:15:31,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 04:15:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:31,450 INFO L225 Difference]: With dead ends: 219 [2020-08-19 04:15:31,450 INFO L226 Difference]: Without dead ends: 141 [2020-08-19 04:15:31,452 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 [2020-08-19 04:15:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-19 04:15:31,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-08-19 04:15:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-19 04:15:31,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 131 transitions. [2020-08-19 04:15:31,486 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 131 transitions. Word has length 47 [2020-08-19 04:15:31,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:31,486 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 131 transitions. [2020-08-19 04:15:31,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:15:31,486 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 131 transitions. [2020-08-19 04:15:31,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:15:31,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:31,488 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] [2020-08-19 04:15:31,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:15:31,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:31,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:31,489 INFO L82 PathProgramCache]: Analyzing trace with hash -115096576, now seen corresponding path program 1 times [2020-08-19 04:15:31,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:31,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145058769] [2020-08-19 04:15:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,803 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:15:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 04:15:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:15:31,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145058769] [2020-08-19 04:15:31,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:31,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:15:31,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099229547] [2020-08-19 04:15:31,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:15:31,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:31,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:15:31,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:15:31,903 INFO L87 Difference]: Start difference. First operand 115 states and 131 transitions. Second operand 8 states. [2020-08-19 04:15:32,252 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:32,532 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:32,792 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:33,011 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:34,050 INFO L93 Difference]: Finished difference Result 232 states and 280 transitions. [2020-08-19 04:15:34,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:15:34,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 04:15:34,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:34,054 INFO L225 Difference]: With dead ends: 232 [2020-08-19 04:15:34,054 INFO L226 Difference]: Without dead ends: 141 [2020-08-19 04:15:34,062 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 [2020-08-19 04:15:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-19 04:15:34,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-08-19 04:15:34,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-19 04:15:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-08-19 04:15:34,101 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 52 [2020-08-19 04:15:34,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:34,101 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-08-19 04:15:34,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:15:34,102 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-08-19 04:15:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 04:15:34,103 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:34,104 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] [2020-08-19 04:15:34,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:15:34,104 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:34,104 INFO L82 PathProgramCache]: Analyzing trace with hash -721685397, now seen corresponding path program 1 times [2020-08-19 04:15:34,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:34,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937749012] [2020-08-19 04:15:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,373 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:15:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 04:15:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 04:15:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:15:34,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937749012] [2020-08-19 04:15:34,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:34,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:15:34,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753112632] [2020-08-19 04:15:34,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:15:34,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:34,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:15:34,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:15:34,449 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand 6 states. [2020-08-19 04:15:34,885 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:36,022 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:36,450 INFO L93 Difference]: Finished difference Result 320 states and 390 transitions. [2020-08-19 04:15:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:15:36,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-19 04:15:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:36,454 INFO L225 Difference]: With dead ends: 320 [2020-08-19 04:15:36,454 INFO L226 Difference]: Without dead ends: 229 [2020-08-19 04:15:36,455 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 [2020-08-19 04:15:36,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-08-19 04:15:36,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 186. [2020-08-19 04:15:36,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-19 04:15:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 211 transitions. [2020-08-19 04:15:36,501 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 211 transitions. Word has length 60 [2020-08-19 04:15:36,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:36,501 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 211 transitions. [2020-08-19 04:15:36,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:15:36,502 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 211 transitions. [2020-08-19 04:15:36,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 04:15:36,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:36,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:36,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:15:36,504 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:36,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:36,504 INFO L82 PathProgramCache]: Analyzing trace with hash -468283367, now seen corresponding path program 1 times [2020-08-19 04:15:36,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:36,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066493710] [2020-08-19 04:15:36,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,791 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:15:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:15:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 04:15:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 04:15:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:36,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:15:36,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066493710] [2020-08-19 04:15:36,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:36,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:15:36,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45213266] [2020-08-19 04:15:36,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:15:36,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:36,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:15:36,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:15:36,905 INFO L87 Difference]: Start difference. First operand 186 states and 211 transitions. Second operand 10 states. [2020-08-19 04:15:37,416 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:37,646 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:37,863 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:38,432 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:38,668 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:38,912 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:39,693 INFO L93 Difference]: Finished difference Result 392 states and 476 transitions. [2020-08-19 04:15:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:15:39,698 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-08-19 04:15:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:39,701 INFO L225 Difference]: With dead ends: 392 [2020-08-19 04:15:39,701 INFO L226 Difference]: Without dead ends: 230 [2020-08-19 04:15:39,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:15:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-08-19 04:15:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 190. [2020-08-19 04:15:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-19 04:15:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 215 transitions. [2020-08-19 04:15:39,773 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 215 transitions. Word has length 74 [2020-08-19 04:15:39,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:39,773 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 215 transitions. [2020-08-19 04:15:39,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:15:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 215 transitions. [2020-08-19 04:15:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 04:15:39,775 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:39,775 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] [2020-08-19 04:15:39,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:15:39,775 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:39,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1903455895, now seen corresponding path program 1 times [2020-08-19 04:15:39,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:39,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540543776] [2020-08-19 04:15:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,088 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:40,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:15:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:15:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 04:15:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 04:15:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:15:40,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540543776] [2020-08-19 04:15:40,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:40,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:15:40,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009055784] [2020-08-19 04:15:40,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:15:40,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:40,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:15:40,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:15:40,214 INFO L87 Difference]: Start difference. First operand 190 states and 215 transitions. Second operand 12 states. [2020-08-19 04:15:40,688 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:41,006 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:41,244 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:41,502 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:42,015 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:42,881 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:43,206 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:43,491 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:43,745 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:44,072 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:44,363 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:45,564 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:45,875 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:46,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:46,487 INFO L93 Difference]: Finished difference Result 680 states and 868 transitions. [2020-08-19 04:15:46,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 04:15:46,488 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-08-19 04:15:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:46,493 INFO L225 Difference]: With dead ends: 680 [2020-08-19 04:15:46,493 INFO L226 Difference]: Without dead ends: 514 [2020-08-19 04:15:46,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 04:15:46,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-08-19 04:15:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 452. [2020-08-19 04:15:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-08-19 04:15:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 523 transitions. [2020-08-19 04:15:46,582 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 523 transitions. Word has length 74 [2020-08-19 04:15:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:46,582 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 523 transitions. [2020-08-19 04:15:46,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:15:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 523 transitions. [2020-08-19 04:15:46,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-19 04:15:46,586 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:46,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:46,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:15:46,587 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:46,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:46,587 INFO L82 PathProgramCache]: Analyzing trace with hash -2107961577, now seen corresponding path program 1 times [2020-08-19 04:15:46,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:46,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771760545] [2020-08-19 04:15:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,879 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:15:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:15:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:15:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:15:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 04:15:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 04:15:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 04:15:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 04:15:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 04:15:47,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771760545] [2020-08-19 04:15:47,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:15:47,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 04:15:47,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055293386] [2020-08-19 04:15:47,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 04:15:47,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:47,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 04:15:47,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:15:47,147 INFO L87 Difference]: Start difference. First operand 452 states and 523 transitions. Second operand 13 states. [2020-08-19 04:15:47,975 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:48,566 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:49,134 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:49,386 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:15:49,664 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:49,909 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:50,151 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:50,415 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:15:50,714 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:50,970 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:52,274 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:52,510 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:52,735 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:52,961 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:53,351 INFO L93 Difference]: Finished difference Result 815 states and 1025 transitions. [2020-08-19 04:15:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 04:15:53,351 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-19 04:15:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:53,355 INFO L225 Difference]: With dead ends: 815 [2020-08-19 04:15:53,356 INFO L226 Difference]: Without dead ends: 387 [2020-08-19 04:15:53,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 04:15:53,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-08-19 04:15:53,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 333. [2020-08-19 04:15:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-08-19 04:15:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 388 transitions. [2020-08-19 04:15:53,422 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 388 transitions. Word has length 130 [2020-08-19 04:15:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:53,422 INFO L479 AbstractCegarLoop]: Abstraction has 333 states and 388 transitions. [2020-08-19 04:15:53,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 04:15:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 388 transitions. [2020-08-19 04:15:53,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-19 04:15:53,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:53,425 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:53,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:15:53,426 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:53,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:53,426 INFO L82 PathProgramCache]: Analyzing trace with hash 942189914, now seen corresponding path program 1 times [2020-08-19 04:15:53,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:53,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463332133] [2020-08-19 04:15:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,716 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:53,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:15:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:15:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:15:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:15:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 04:15:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-19 04:15:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 04:15:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 04:15:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:15:53,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463332133] [2020-08-19 04:15:53,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:15:53,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 04:15:53,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554264757] [2020-08-19 04:15:53,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:15:53,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:53,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:15:53,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:15:53,904 INFO L87 Difference]: Start difference. First operand 333 states and 388 transitions. Second operand 12 states. [2020-08-19 04:15:54,408 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:54,984 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:55,689 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:55,946 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:56,205 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:56,436 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:56,698 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:56,952 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:57,828 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:58,575 INFO L93 Difference]: Finished difference Result 783 states and 991 transitions. [2020-08-19 04:15:58,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 04:15:58,577 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-19 04:15:58,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:58,582 INFO L225 Difference]: With dead ends: 783 [2020-08-19 04:15:58,583 INFO L226 Difference]: Without dead ends: 532 [2020-08-19 04:15:58,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-08-19 04:15:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-19 04:15:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 439. [2020-08-19 04:15:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-08-19 04:15:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 520 transitions. [2020-08-19 04:15:58,674 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 520 transitions. Word has length 130 [2020-08-19 04:15:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:58,675 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 520 transitions. [2020-08-19 04:15:58,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:15:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 520 transitions. [2020-08-19 04:15:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-19 04:15:58,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:58,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:58,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:15:58,679 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash 223073758, now seen corresponding path program 2 times [2020-08-19 04:15:58,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:58,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39312382] [2020-08-19 04:15:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:15:58,763 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:15:58,764 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:15:58,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:15:58,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:15:58 BoogieIcfgContainer [2020-08-19 04:15:58,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:15:58,813 INFO L168 Benchmark]: Toolchain (without parser) took 33054.25 ms. Allocated memory was 140.5 MB in the beginning and 612.4 MB in the end (delta: 471.9 MB). Free memory was 102.4 MB in the beginning and 461.8 MB in the end (delta: -359.4 MB). Peak memory consumption was 112.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:15:58,814 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:15:58,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.20 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 169.2 MB in the end (delta: -67.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:15:58,815 INFO L168 Benchmark]: Boogie Preprocessor took 87.57 ms. Allocated memory is still 203.4 MB. Free memory was 169.2 MB in the beginning and 164.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:15:58,816 INFO L168 Benchmark]: RCFGBuilder took 1074.94 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 164.6 MB in the beginning and 192.4 MB in the end (delta: -27.7 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-08-19 04:15:58,817 INFO L168 Benchmark]: TraceAbstraction took 31212.86 ms. Allocated memory was 235.4 MB in the beginning and 612.4 MB in the end (delta: 377.0 MB). Free memory was 192.4 MB in the beginning and 461.8 MB in the end (delta: -269.4 MB). Peak memory consumption was 107.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:15:58,820 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.20 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 169.2 MB in the end (delta: -67.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.57 ms. Allocated memory is still 203.4 MB. Free memory was 169.2 MB in the beginning and 164.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1074.94 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 164.6 MB in the beginning and 192.4 MB in the end (delta: -27.7 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31212.86 ms. Allocated memory was 235.4 MB in the beginning and 612.4 MB in the end (delta: 377.0 MB). Free memory was 192.4 MB in the beginning and 461.8 MB in the end (delta: -269.4 MB). Peak memory consumption was 107.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 924]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L573] int cleanupTimeShifts = 4; [L742] int pumpRunning = 0; [L743] int systemActive = 1; [L649] int retValue_acc ; [L650] int tmp ; [L654] FCALL select_helpers() [L655] FCALL select_features() [L656] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L656] RET, EXPR valid_product() [L656] tmp = valid_product() [L658] COND TRUE \read(tmp) [L660] FCALL setup() [L661] CALL runTest() [L643] CALL test() [L674] int splverifierCounter ; [L675] int tmp ; [L676] int tmp___0 ; [L677] int tmp___1 ; [L678] int tmp___2 ; [L681] splverifierCounter = 0 [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND TRUE \read(tmp) [L695] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L695] RET waterRise() [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___1) [L728] CALL timeShift() [L749] COND FALSE !(\read(pumpRunning)) [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND TRUE ! pumpRunning [L783] CALL, EXPR isHighWaterLevel() [L893] int retValue_acc ; [L894] int tmp ; [L895] int tmp___0 ; [L899] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L899] RET, EXPR isHighWaterSensorDry() [L899] tmp = isHighWaterSensorDry() [L901] COND FALSE !(\read(tmp)) [L904] tmp___0 = 1 [L906] retValue_acc = tmp___0 [L907] return (retValue_acc); [L783] RET, EXPR isHighWaterLevel() [L783] tmp = isHighWaterLevel() [L785] COND TRUE \read(tmp) [L787] CALL activatePump() [L812] int tmp ; [L816] CALL, EXPR isMethaneAlarm() [L837] int retValue_acc ; [L841] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L841] RET, EXPR isMethaneLevelCritical() [L841] retValue_acc = isMethaneLevelCritical() [L843] return (retValue_acc); [L816] RET, EXPR isMethaneAlarm() [L816] tmp = isMethaneAlarm() [L818] COND FALSE !(\read(tmp)) [L822] CALL activatePump__wrappee__highWaterSensor() [L806] pumpRunning = 1 [L822] RET activatePump__wrappee__highWaterSensor() [L787] RET activatePump() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) [L764] RET __utac_acc__Specification4_spec__1() [L728] RET timeShift() [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___1) [L728] CALL timeShift() [L749] COND TRUE \read(pumpRunning) [L751] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L751] RET lowerWaterLevel() [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND FALSE !(! pumpRunning) [L796] FCALL processEnvironment__wrappee__base() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) [L764] RET __utac_acc__Specification4_spec__1() [L728] RET timeShift() [L683] COND TRUE 1 [L685] COND TRUE splverifierCounter < 4 [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___1) [L728] CALL timeShift() [L749] COND TRUE \read(pumpRunning) [L751] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L751] RET lowerWaterLevel() [L756] COND TRUE \read(systemActive) [L758] CALL processEnvironment() [L778] int tmp ; [L781] COND FALSE !(! pumpRunning) [L796] FCALL processEnvironment__wrappee__base() [L758] RET processEnvironment() [L764] CALL __utac_acc__Specification4_spec__1() [L548] int tmp ; [L549] int tmp___0 ; [L553] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L553] RET, EXPR getWaterLevel() [L553] tmp = getWaterLevel() [L555] COND TRUE tmp == 0 [L557] CALL, EXPR isPumpRunning() [L848] int retValue_acc ; [L851] retValue_acc = pumpRunning [L852] return (retValue_acc); [L557] RET, EXPR isPumpRunning() [L557] tmp___0 = isPumpRunning() [L559] COND TRUE \read(tmp___0) [L561] CALL __automaton_fail() [L924] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.1s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 26.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 939 SDtfs, 1885 SDslu, 1145 SDs, 0 SdLazy, 5691 SolverSat, 1263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=452occurred in iteration=6, 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, 8 MinimizatonAttempts, 377 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 779 NumberOfCodeBlocks, 779 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 605 ConstructedInterpolants, 0 QuantifiedInterpolants, 204121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 44/50 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...