/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_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:15:18,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:15:18,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:15:18,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:15:18,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:15:18,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:15:18,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:15:18,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:15:18,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:15:18,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:15:18,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:15:18,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:15:18,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:15:18,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:15:18,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:15:18,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:15:18,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:15:18,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:15:18,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:15:18,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:15:18,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:15:18,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:15:18,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:15:18,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:15:18,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:15:18,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:15:18,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:15:18,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:15:18,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:15:18,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:15:18,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:15:18,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:15:18,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:15:18,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:15:18,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:15:18,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:15:18,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:15:18,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:15:18,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:15:18,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:15:18,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:15:18,495 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 04:15:18,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:15:18,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:15:18,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:15:18,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:15:18,542 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:15:18,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:15:18,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:15:18,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:15:18,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:15:18,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:15:18,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:15:18,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:15:18,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:15:18,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:15:18,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:15:18,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:15:18,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:15:18,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:15:18,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:15:18,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:15:18,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:15:18,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:15:18,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:15:18,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:15:18,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:15:18,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:15:18,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:15:18,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:15:18,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:15:18,548 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 04:15:18,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:15:18,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:15:18,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:15:18,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:15:18,849 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:15:18,850 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-08-19 04:15:18,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90bb76f6e/9d16b9eb425f44afacf91db6383a4265/FLAG8c0f9a09f [2020-08-19 04:15:19,486 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:15:19,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product41.cil.c [2020-08-19 04:15:19,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90bb76f6e/9d16b9eb425f44afacf91db6383a4265/FLAG8c0f9a09f [2020-08-19 04:15:19,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90bb76f6e/9d16b9eb425f44afacf91db6383a4265 [2020-08-19 04:15:19,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:15:19,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:15:19,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:15:19,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:15:19,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:15:19,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:15:19" (1/1) ... [2020-08-19 04:15:19,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:19, skipping insertion in model container [2020-08-19 04:15:19,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:15:19" (1/1) ... [2020-08-19 04:15:19,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:15:19,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:15:20,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:15:20,342 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:15:20,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:15:20,546 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:15:20,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:20 WrapperNode [2020-08-19 04:15:20,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:15:20,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:15:20,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:15:20,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:15:20,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:20" (1/1) ... [2020-08-19 04:15:20,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:20" (1/1) ... [2020-08-19 04:15:20,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:20" (1/1) ... [2020-08-19 04:15:20,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:20" (1/1) ... [2020-08-19 04:15:20,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:20" (1/1) ... [2020-08-19 04:15:20,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:20" (1/1) ... [2020-08-19 04:15:20,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:20" (1/1) ... [2020-08-19 04:15:20,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:15:20,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:15:20,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:15:20,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:15:20,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:20" (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 04:15:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:15:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:15:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:15:20,730 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:15:20,730 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:15:20,730 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:15:20,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:15:20,730 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:15:20,730 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:15:20,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:15:20,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 04:15:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:15:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:15:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:15:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:15:20,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:15:20,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:15:20,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:15:20,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:15:20,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:15:20,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:15:20,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:15:20,734 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:15:20,734 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:15:20,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:15:20,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:15:20,736 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:15:20,736 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:15:20,736 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:15:20,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:15:20,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:15:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:15:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:15:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:15:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:15:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:15:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:15:20,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:15:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:15:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:15:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:15:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:15:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:15:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:15:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:15:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:15:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:15:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:15:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:15:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:15:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:15:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 04:15:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:15:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:15:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:15:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:15:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:15:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:15:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:15:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:15:20,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:15:20,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:15:20,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:15:20,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:15:20,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:15:20,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:15:20,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:15:20,743 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:15:20,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:15:20,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:15:20,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:15:20,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:15:20,744 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:15:20,745 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:15:20,745 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:15:20,745 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:15:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:15:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:15:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:15:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:15:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:15:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 04:15:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:15:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:15:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:15:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:15:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:15:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:15:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:15:20,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:15:21,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:15:21,764 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:15:21,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:15:21 BoogieIcfgContainer [2020-08-19 04:15:21,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:15:21,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:15:21,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:15:21,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:15:21,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:15:19" (1/3) ... [2020-08-19 04:15:21,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dd6d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:15:21, skipping insertion in model container [2020-08-19 04:15:21,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:15:20" (2/3) ... [2020-08-19 04:15:21,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dd6d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:15:21, skipping insertion in model container [2020-08-19 04:15:21,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:15:21" (3/3) ... [2020-08-19 04:15:21,778 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product41.cil.c [2020-08-19 04:15:21,788 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:15:21,796 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:15:21,811 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:15:21,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:15:21,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:15:21,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:15:21,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:15:21,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:15:21,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:15:21,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:15:21,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:15:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-08-19 04:15:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 04:15:21,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:21,881 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 04:15:21,882 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:21,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:21,888 INFO L82 PathProgramCache]: Analyzing trace with hash -219528545, now seen corresponding path program 1 times [2020-08-19 04:15:21,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:21,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287549110] [2020-08-19 04:15:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:22,645 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:22,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:22,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:22,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:22,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:22,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:15:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:22,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:15:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:22,726 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 04:15:22,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287549110] [2020-08-19 04:15:22,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:22,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:15:22,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993981712] [2020-08-19 04:15:22,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:15:22,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:22,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:15:22,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:15:22,757 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 3 states. [2020-08-19 04:15:23,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:23,848 INFO L93 Difference]: Finished difference Result 281 states and 365 transitions. [2020-08-19 04:15:23,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:15:23,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 04:15:23,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:23,865 INFO L225 Difference]: With dead ends: 281 [2020-08-19 04:15:23,866 INFO L226 Difference]: Without dead ends: 152 [2020-08-19 04:15:23,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:15:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-19 04:15:23,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2020-08-19 04:15:23,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 04:15:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-08-19 04:15:23,966 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 46 [2020-08-19 04:15:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:23,967 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-08-19 04:15:23,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:15:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-08-19 04:15:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 04:15:23,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:23,970 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 04:15:23,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:15:23,971 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:23,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:23,971 INFO L82 PathProgramCache]: Analyzing trace with hash 207659306, now seen corresponding path program 1 times [2020-08-19 04:15:23,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:23,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759119780] [2020-08-19 04:15:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:24,351 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:24,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:24,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:24,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:24,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:24,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:15:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:24,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:15:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:24,422 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 04:15:24,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759119780] [2020-08-19 04:15:24,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:24,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:15:24,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517227942] [2020-08-19 04:15:24,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:15:24,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:24,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:15:24,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:15:24,427 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 4 states. [2020-08-19 04:15:24,845 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:25,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:25,529 INFO L93 Difference]: Finished difference Result 214 states and 256 transitions. [2020-08-19 04:15:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:15:25,534 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 04:15:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:25,539 INFO L225 Difference]: With dead ends: 214 [2020-08-19 04:15:25,541 INFO L226 Difference]: Without dead ends: 136 [2020-08-19 04:15:25,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:15:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-19 04:15:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-08-19 04:15:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-19 04:15:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2020-08-19 04:15:25,595 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 47 [2020-08-19 04:15:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:25,596 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2020-08-19 04:15:25,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:15:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2020-08-19 04:15:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 04:15:25,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:25,608 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] [2020-08-19 04:15:25,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:15:25,608 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:25,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1269439858, now seen corresponding path program 1 times [2020-08-19 04:15:25,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:25,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833903335] [2020-08-19 04:15:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:25,966 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:25,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:26,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:26,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:15:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:26,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:15:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:26,070 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 04:15:26,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833903335] [2020-08-19 04:15:26,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:26,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:15:26,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486446884] [2020-08-19 04:15:26,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:15:26,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:26,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:15:26,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:15:26,073 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand 8 states. [2020-08-19 04:15:26,398 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:26,722 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:26,988 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:27,221 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:28,249 INFO L93 Difference]: Finished difference Result 223 states and 270 transitions. [2020-08-19 04:15:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:15:28,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 04:15:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:28,253 INFO L225 Difference]: With dead ends: 223 [2020-08-19 04:15:28,253 INFO L226 Difference]: Without dead ends: 136 [2020-08-19 04:15:28,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:15:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-19 04:15:28,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2020-08-19 04:15:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-19 04:15:28,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2020-08-19 04:15:28,289 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 51 [2020-08-19 04:15:28,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:28,289 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2020-08-19 04:15:28,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:15:28,289 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2020-08-19 04:15:28,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 04:15:28,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:28,291 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] [2020-08-19 04:15:28,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:15:28,291 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:28,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:28,292 INFO L82 PathProgramCache]: Analyzing trace with hash 6417079, now seen corresponding path program 1 times [2020-08-19 04:15:28,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:28,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107966263] [2020-08-19 04:15:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,600 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:15:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 04:15:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 04:15:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:28,684 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 04:15:28,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107966263] [2020-08-19 04:15:28,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:28,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:15:28,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700848846] [2020-08-19 04:15:28,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:15:28,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:28,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:15:28,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:15:28,687 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand 6 states. [2020-08-19 04:15:29,036 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:30,233 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:30,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:30,641 INFO L93 Difference]: Finished difference Result 306 states and 374 transitions. [2020-08-19 04:15:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:15:30,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-19 04:15:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:30,644 INFO L225 Difference]: With dead ends: 306 [2020-08-19 04:15:30,644 INFO L226 Difference]: Without dead ends: 219 [2020-08-19 04:15:30,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:15:30,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-08-19 04:15:30,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2020-08-19 04:15:30,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-08-19 04:15:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2020-08-19 04:15:30,690 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 59 [2020-08-19 04:15:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:30,691 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2020-08-19 04:15:30,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:15:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2020-08-19 04:15:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-19 04:15:30,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:30,693 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] [2020-08-19 04:15:30,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:15:30,696 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:30,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1711068188, now seen corresponding path program 1 times [2020-08-19 04:15:30,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:30,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567308580] [2020-08-19 04:15:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,964 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:30,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:15:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:15:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 04:15:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 04:15:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:31,089 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 04:15:31,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567308580] [2020-08-19 04:15:31,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:31,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:15:31,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566080624] [2020-08-19 04:15:31,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:15:31,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:15:31,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:15:31,092 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand 10 states. [2020-08-19 04:15:31,607 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:31,845 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:32,078 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:32,639 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:32,889 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:33,126 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:33,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:33,977 INFO L93 Difference]: Finished difference Result 374 states and 456 transitions. [2020-08-19 04:15:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:15:33,978 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-08-19 04:15:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:33,981 INFO L225 Difference]: With dead ends: 374 [2020-08-19 04:15:33,981 INFO L226 Difference]: Without dead ends: 220 [2020-08-19 04:15:33,982 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 04:15:33,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-19 04:15:34,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 182. [2020-08-19 04:15:34,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-19 04:15:34,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2020-08-19 04:15:34,021 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 73 [2020-08-19 04:15:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:34,022 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2020-08-19 04:15:34,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:15:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2020-08-19 04:15:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-19 04:15:34,023 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:34,023 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] [2020-08-19 04:15:34,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:15:34,024 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:34,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:34,024 INFO L82 PathProgramCache]: Analyzing trace with hash -212159846, now seen corresponding path program 1 times [2020-08-19 04:15:34,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:34,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838855117] [2020-08-19 04:15:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,341 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:34,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:34,394 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 35 [2020-08-19 04:15:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:15:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 04:15:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 04:15:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:34,441 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 04:15:34,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838855117] [2020-08-19 04:15:34,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:15:34,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:15:34,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564587797] [2020-08-19 04:15:34,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:15:34,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:34,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:15:34,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:15:34,444 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand 12 states. [2020-08-19 04:15:34,812 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:35,109 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:35,364 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:35,590 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:36,076 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:36,866 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:37,179 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:37,456 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:37,704 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:38,034 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:38,323 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:39,413 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:39,688 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:40,251 INFO L93 Difference]: Finished difference Result 644 states and 828 transitions. [2020-08-19 04:15:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 04:15:40,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-19 04:15:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:40,257 INFO L225 Difference]: With dead ends: 644 [2020-08-19 04:15:40,257 INFO L226 Difference]: Without dead ends: 486 [2020-08-19 04:15:40,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 04:15:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-19 04:15:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 428. [2020-08-19 04:15:40,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-08-19 04:15:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 499 transitions. [2020-08-19 04:15:40,344 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 499 transitions. Word has length 73 [2020-08-19 04:15:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:40,344 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 499 transitions. [2020-08-19 04:15:40,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:15:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 499 transitions. [2020-08-19 04:15:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 04:15:40,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:40,348 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, 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] [2020-08-19 04:15:40,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:15:40,349 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:40,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:40,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1943233311, now seen corresponding path program 1 times [2020-08-19 04:15:40,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:40,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933988092] [2020-08-19 04:15:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,641 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:40,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:15:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:15:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:15:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:15:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 04:15:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 04:15:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 04:15:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 04:15:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 04:15:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 04:15:40,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933988092] [2020-08-19 04:15:40,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:15:40,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 04:15:40,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285968270] [2020-08-19 04:15:40,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 04:15:40,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:40,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 04:15:40,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:15:40,871 INFO L87 Difference]: Start difference. First operand 428 states and 499 transitions. Second operand 13 states. [2020-08-19 04:15:41,273 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:41,889 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:42,388 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:42,647 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 04:15:42,911 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:43,153 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:15:43,386 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:43,658 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 04:15:43,933 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:44,169 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:45,444 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:45,681 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:15:45,913 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:46,143 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:15:46,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:46,507 INFO L93 Difference]: Finished difference Result 767 states and 973 transitions. [2020-08-19 04:15:46,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 04:15:46,508 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-19 04:15:46,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:46,512 INFO L225 Difference]: With dead ends: 767 [2020-08-19 04:15:46,512 INFO L226 Difference]: Without dead ends: 363 [2020-08-19 04:15:46,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 04:15:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-08-19 04:15:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 313. [2020-08-19 04:15:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-08-19 04:15:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 368 transitions. [2020-08-19 04:15:46,569 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 368 transitions. Word has length 132 [2020-08-19 04:15:46,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:46,570 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 368 transitions. [2020-08-19 04:15:46,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 04:15:46,570 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 368 transitions. [2020-08-19 04:15:46,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-19 04:15:46,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:46,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:15:46,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:15:46,573 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:46,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:46,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1980525114, now seen corresponding path program 1 times [2020-08-19 04:15:46,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:46,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118198338] [2020-08-19 04:15:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,934 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:15:46,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:15:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:15:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:15:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:15:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:15:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:46,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 04:15:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:15:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:47,055 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 1 [2020-08-19 04:15:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:15:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:47,086 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 12 [2020-08-19 04:15:47,089 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 40 [2020-08-19 04:15:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:15:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 04:15:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 04:15:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:15:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 04:15:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 04:15:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:15:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:15:47,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118198338] [2020-08-19 04:15:47,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:15:47,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 04:15:47,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304242421] [2020-08-19 04:15:47,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:15:47,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:15:47,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:15:47,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:15:47,234 INFO L87 Difference]: Start difference. First operand 313 states and 368 transitions. Second operand 12 states. [2020-08-19 04:15:47,825 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:48,515 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:49,177 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:49,432 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:49,682 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:49,922 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:15:50,195 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:50,441 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:15:51,309 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:15:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:15:51,996 INFO L93 Difference]: Finished difference Result 727 states and 931 transitions. [2020-08-19 04:15:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 04:15:52,001 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-19 04:15:52,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:15:52,005 INFO L225 Difference]: With dead ends: 727 [2020-08-19 04:15:52,006 INFO L226 Difference]: Without dead ends: 492 [2020-08-19 04:15:52,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-08-19 04:15:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-19 04:15:52,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 411. [2020-08-19 04:15:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-08-19 04:15:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 492 transitions. [2020-08-19 04:15:52,083 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 492 transitions. Word has length 128 [2020-08-19 04:15:52,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:15:52,084 INFO L479 AbstractCegarLoop]: Abstraction has 411 states and 492 transitions. [2020-08-19 04:15:52,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:15:52,084 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 492 transitions. [2020-08-19 04:15:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-19 04:15:52,087 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:15:52,087 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, 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 04:15:52,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:15:52,087 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:15:52,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:15:52,088 INFO L82 PathProgramCache]: Analyzing trace with hash 2141115904, now seen corresponding path program 2 times [2020-08-19 04:15:52,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:15:52,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135809910] [2020-08-19 04:15:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:15:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:15:52,154 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:15:52,154 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:15:52,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:15:52,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:15:52 BoogieIcfgContainer [2020-08-19 04:15:52,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:15:52,193 INFO L168 Benchmark]: Toolchain (without parser) took 32414.36 ms. Allocated memory was 148.9 MB in the beginning and 599.8 MB in the end (delta: 450.9 MB). Free memory was 102.8 MB in the beginning and 407.4 MB in the end (delta: -304.6 MB). Peak memory consumption was 146.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:15:52,194 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:15:52,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.78 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 173.9 MB in the end (delta: -71.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-19 04:15:52,196 INFO L168 Benchmark]: Boogie Preprocessor took 102.73 ms. Allocated memory is still 206.0 MB. Free memory was 173.9 MB in the beginning and 170.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:15:52,197 INFO L168 Benchmark]: RCFGBuilder took 1116.88 ms. Allocated memory was 206.0 MB in the beginning and 233.8 MB in the end (delta: 27.8 MB). Free memory was 170.1 MB in the beginning and 192.8 MB in the end (delta: -22.7 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:15:52,197 INFO L168 Benchmark]: TraceAbstraction took 30420.58 ms. Allocated memory was 233.8 MB in the beginning and 599.8 MB in the end (delta: 366.0 MB). Free memory was 191.5 MB in the beginning and 407.4 MB in the end (delta: -215.9 MB). Peak memory consumption was 150.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:15:52,201 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 768.78 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 173.9 MB in the end (delta: -71.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.73 ms. Allocated memory is still 206.0 MB. Free memory was 173.9 MB in the beginning and 170.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1116.88 ms. Allocated memory was 206.0 MB in the beginning and 233.8 MB in the end (delta: 27.8 MB). Free memory was 170.1 MB in the beginning and 192.8 MB in the end (delta: -22.7 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30420.58 ms. Allocated memory was 233.8 MB in the beginning and 599.8 MB in the end (delta: 366.0 MB). Free memory was 191.5 MB in the beginning and 407.4 MB in the end (delta: -215.9 MB). Peak memory consumption was 150.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 211]: 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; [L385] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L822] int cleanupTimeShifts = 4; [L895] int retValue_acc ; [L896] int tmp ; [L900] FCALL select_helpers() [L901] FCALL select_features() [L902] CALL, EXPR valid_product() [L198] int retValue_acc ; [L201] retValue_acc = 1 [L202] return (retValue_acc); [L902] RET, EXPR valid_product() [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L906] FCALL setup() [L907] CALL runTest() [L889] CALL test() [L585] int splverifierCounter ; [L586] int tmp ; [L587] int tmp___0 ; [L588] int tmp___1 ; [L589] int tmp___2 ; [L592] splverifierCounter = 0 [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND TRUE \read(tmp) [L606] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L606] RET waterRise() [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L803] int retValue_acc ; [L804] int tmp ; [L805] int tmp___0 ; [L809] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L809] RET, EXPR isHighWaterSensorDry() [L809] tmp = isHighWaterSensorDry() [L811] COND FALSE !(\read(tmp)) [L814] tmp___0 = 1 [L816] retValue_acc = tmp___0 [L817] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L722] int tmp ; [L726] CALL, EXPR isMethaneAlarm() [L747] int retValue_acc ; [L751] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L751] RET, EXPR isMethaneLevelCritical() [L751] retValue_acc = isMethaneLevelCritical() [L753] return (retValue_acc); [L726] RET, EXPR isMethaneAlarm() [L726] tmp = isMethaneAlarm() [L728] COND FALSE !(\read(tmp)) [L732] CALL activatePump__wrappee__highWaterSensor() [L716] pumpRunning = 1 [L732] RET activatePump__wrappee__highWaterSensor() [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND FALSE !(tmp == 0) [L674] RET __utac_acc__Specification4_spec__1() [L637] RET timeShift() [L594] COND TRUE 1 [L596] COND TRUE splverifierCounter < 4 [L602] tmp = __VERIFIER_nondet_int() [L604] COND FALSE !(\read(tmp)) [L612] tmp___0 = __VERIFIER_nondet_int() [L614] COND FALSE !(\read(tmp___0)) [L622] tmp___2 = __VERIFIER_nondet_int() [L624] COND TRUE \read(tmp___2) [L637] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification4_spec__1() [L144] int tmp ; [L145] int tmp___0 ; [L149] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L149] RET, EXPR getWaterLevel() [L149] tmp = getWaterLevel() [L151] COND TRUE tmp == 0 [L153] CALL, EXPR isPumpRunning() [L758] int retValue_acc ; [L761] retValue_acc = pumpRunning [L762] return (retValue_acc); [L153] RET, EXPR isPumpRunning() [L153] tmp___0 = isPumpRunning() [L155] COND TRUE \read(tmp___0) [L157] CALL __automaton_fail() [L211] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.3s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 25.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 898 SDtfs, 1922 SDslu, 1101 SDs, 0 SdLazy, 5413 SolverSat, 1227 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred 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: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 350 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 772 NumberOfCodeBlocks, 772 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 601 ConstructedInterpolants, 0 QuantifiedInterpolants, 204026 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 44/52 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...