/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:08:57,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:08:57,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:08:57,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:08:57,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:08:57,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:08:57,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:08:57,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:08:57,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:08:57,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:08:57,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:08:57,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:08:57,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:08:57,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:08:57,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:08:57,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:08:57,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:08:57,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:08:57,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:08:57,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:08:57,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:08:57,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:08:57,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:08:57,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:08:57,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:08:57,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:08:57,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:08:57,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:08:57,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:08:57,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:08:57,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:08:57,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:08:57,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:08:57,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:08:57,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:08:57,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:08:57,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:08:57,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:08:57,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:08:57,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:08:57,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:08:57,545 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 [2020-08-21 21:08:57,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:08:57,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:08:57,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:08:57,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:08:57,586 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:08:57,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:08:57,587 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:08:57,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:08:57,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:08:57,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:08:57,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:08:57,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:08:57,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:08:57,589 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:08:57,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:08:57,590 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:08:57,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:08:57,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:08:57,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:08:57,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:08:57,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:08:57,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:08:57,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:08:57,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:08:57,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:08:57,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:08:57,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:08:57,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:08:57,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:08:57,592 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=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:08:57,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:08:57,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:08:57,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:08:57,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:08:57,892 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:08:57,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-21 21:08:57,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01d4a08c5/b20453501c714720b334de4962932213/FLAG79f0e310c [2020-08-21 21:08:58,501 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:08:58,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-21 21:08:58,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01d4a08c5/b20453501c714720b334de4962932213/FLAG79f0e310c [2020-08-21 21:08:58,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01d4a08c5/b20453501c714720b334de4962932213 [2020-08-21 21:08:58,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:08:58,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:08:58,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:08:58,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:08:58,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:08:58,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:08:58" (1/1) ... [2020-08-21 21:08:58,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ed4b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:58, skipping insertion in model container [2020-08-21 21:08:58,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:08:58" (1/1) ... [2020-08-21 21:08:58,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:08:58,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:08:59,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:08:59,256 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:08:59,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:08:59,555 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:08:59,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:59 WrapperNode [2020-08-21 21:08:59,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:08:59,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:08:59,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:08:59,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:08:59,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:59" (1/1) ... [2020-08-21 21:08:59,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:59" (1/1) ... [2020-08-21 21:08:59,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:59" (1/1) ... [2020-08-21 21:08:59,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:59" (1/1) ... [2020-08-21 21:08:59,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:59" (1/1) ... [2020-08-21 21:08:59,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:59" (1/1) ... [2020-08-21 21:08:59,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:59" (1/1) ... [2020-08-21 21:08:59,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:08:59,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:08:59,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:08:59,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:08:59,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:59" (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 [2020-08-21 21:08:59,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:08:59,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:08:59,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:08:59,719 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:08:59,719 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:08:59,719 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:08:59,719 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 21:08:59,720 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:08:59,720 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 21:08:59,721 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:08:59,721 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:08:59,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:08:59,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:08:59,721 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:08:59,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:08:59,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 21:08:59,722 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 21:08:59,723 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:08:59,723 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:08:59,723 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:08:59,723 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:08:59,723 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:08:59,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:08:59,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:08:59,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:08:59,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:08:59,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:08:59,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:08:59,725 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:08:59,725 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:08:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:08:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:08:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:08:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:08:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:08:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:08:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:08:59,727 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:08:59,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:08:59,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:08:59,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 21:08:59,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:08:59,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:08:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:08:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:08:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:08:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:08:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:08:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:08:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:08:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 21:08:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:08:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:08:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:08:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:08:59,730 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:08:59,730 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 21:08:59,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 21:08:59,730 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:08:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:08:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:08:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:08:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 21:08:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 21:08:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:08:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 21:08:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:08:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:08:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:08:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:08:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:08:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:08:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:08:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:08:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:08:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:08:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:08:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:08:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:08:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:08:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:08:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:08:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:08:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:08:59,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:08:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:08:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:08:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:08:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:08:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:08:59,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:08:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:08:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:08:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:08:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:08:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:08:59,739 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:08:59,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:08:59,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:08:59,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:09:00,947 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:09:00,948 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:09:00,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:09:00 BoogieIcfgContainer [2020-08-21 21:09:00,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:09:00,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:09:00,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:09:00,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:09:00,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:08:58" (1/3) ... [2020-08-21 21:09:00,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8b4698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:09:00, skipping insertion in model container [2020-08-21 21:09:00,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:08:59" (2/3) ... [2020-08-21 21:09:00,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8b4698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:09:00, skipping insertion in model container [2020-08-21 21:09:00,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:09:00" (3/3) ... [2020-08-21 21:09:00,968 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2020-08-21 21:09:00,978 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:09:00,988 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:09:01,002 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:09:01,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:09:01,030 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:09:01,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:09:01,030 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:09:01,031 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:09:01,031 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:09:01,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:09:01,031 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:09:01,050 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-21 21:09:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 21:09:01,060 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:01,062 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] [2020-08-21 21:09:01,062 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:01,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:01,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1419538001, now seen corresponding path program 1 times [2020-08-21 21:09:01,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:01,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383387395] [2020-08-21 21:09:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:01,778 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:01,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:01,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:01,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:01,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:01,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:09:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:09:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:09:01,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383387395] [2020-08-21 21:09:01,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:01,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:09:01,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196726328] [2020-08-21 21:09:01,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:09:01,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:01,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:09:01,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:09:01,908 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2020-08-21 21:09:03,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:03,317 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2020-08-21 21:09:03,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:09:03,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 21:09:03,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:03,335 INFO L225 Difference]: With dead ends: 354 [2020-08-21 21:09:03,335 INFO L226 Difference]: Without dead ends: 191 [2020-08-21 21:09:03,340 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 [2020-08-21 21:09:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-21 21:09:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 154. [2020-08-21 21:09:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-21 21:09:03,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2020-08-21 21:09:03,449 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 46 [2020-08-21 21:09:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:03,450 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2020-08-21 21:09:03,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:09:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2020-08-21 21:09:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 21:09:03,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:03,461 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] [2020-08-21 21:09:03,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:09:03,462 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:03,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:03,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1353902391, now seen corresponding path program 1 times [2020-08-21 21:09:03,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:03,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738321842] [2020-08-21 21:09:03,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:03,813 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:03,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:03,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:03,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:03,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:09:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:03,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:09:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:09:03,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738321842] [2020-08-21 21:09:03,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:03,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:09:03,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615419847] [2020-08-21 21:09:03,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:09:03,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:03,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:09:03,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:09:03,864 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 4 states. [2020-08-21 21:09:04,362 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:05,346 INFO L93 Difference]: Finished difference Result 283 states and 348 transitions. [2020-08-21 21:09:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:09:05,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 21:09:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:05,350 INFO L225 Difference]: With dead ends: 283 [2020-08-21 21:09:05,350 INFO L226 Difference]: Without dead ends: 175 [2020-08-21 21:09:05,353 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 [2020-08-21 21:09:05,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-21 21:09:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-21 21:09:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-21 21:09:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2020-08-21 21:09:05,397 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 47 [2020-08-21 21:09:05,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:05,397 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2020-08-21 21:09:05,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:09:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2020-08-21 21:09:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:09:05,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:05,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:09:05,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:09:05,400 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:05,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:05,400 INFO L82 PathProgramCache]: Analyzing trace with hash -480372053, now seen corresponding path program 1 times [2020-08-21 21:09:05,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:05,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469964506] [2020-08-21 21:09:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:05,708 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:05,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:05,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:05,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:05,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:05,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:09:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:05,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:09:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:09:05,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469964506] [2020-08-21 21:09:05,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:05,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:09:05,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289903413] [2020-08-21 21:09:05,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:09:05,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:05,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:09:05,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:09:05,788 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand 8 states. [2020-08-21 21:09:06,195 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:06,491 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:06,762 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:07,014 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:08,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:08,401 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2020-08-21 21:09:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:09:08,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 21:09:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:08,405 INFO L225 Difference]: With dead ends: 296 [2020-08-21 21:09:08,405 INFO L226 Difference]: Without dead ends: 175 [2020-08-21 21:09:08,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:09:08,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-21 21:09:08,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-21 21:09:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-21 21:09:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2020-08-21 21:09:08,449 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 52 [2020-08-21 21:09:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:08,450 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2020-08-21 21:09:08,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:09:08,450 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2020-08-21 21:09:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 21:09:08,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:08,452 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] [2020-08-21 21:09:08,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:09:08,452 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:08,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:08,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1922469070, now seen corresponding path program 1 times [2020-08-21 21:09:08,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:08,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484412919] [2020-08-21 21:09:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,723 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:08,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:09:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 21:09:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 21:09:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:09:08,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484412919] [2020-08-21 21:09:08,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:08,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:09:08,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046838617] [2020-08-21 21:09:08,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:09:08,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:08,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:09:08,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:09:08,878 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 6 states. [2020-08-21 21:09:09,186 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:10,378 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:11,262 INFO L93 Difference]: Finished difference Result 404 states and 500 transitions. [2020-08-21 21:09:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:09:11,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-21 21:09:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:11,267 INFO L225 Difference]: With dead ends: 404 [2020-08-21 21:09:11,267 INFO L226 Difference]: Without dead ends: 283 [2020-08-21 21:09:11,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:09:11,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-21 21:09:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 240. [2020-08-21 21:09:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-21 21:09:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2020-08-21 21:09:11,321 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 70 [2020-08-21 21:09:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:11,322 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2020-08-21 21:09:11,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:09:11,322 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2020-08-21 21:09:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 21:09:11,323 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:11,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:09:11,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:09:11,324 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:11,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:11,324 INFO L82 PathProgramCache]: Analyzing trace with hash 371744810, now seen corresponding path program 1 times [2020-08-21 21:09:11,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:11,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827647518] [2020-08-21 21:09:11,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,582 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:11,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:09:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 21:09:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 21:09:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:09:11,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827647518] [2020-08-21 21:09:11,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:11,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:09:11,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426055345] [2020-08-21 21:09:11,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:09:11,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:11,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:09:11,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:09:11,714 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 8 states. [2020-08-21 21:09:12,165 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:13,147 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:13,524 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:14,088 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:14,317 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:14,580 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:15,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:15,756 INFO L93 Difference]: Finished difference Result 718 states and 872 transitions. [2020-08-21 21:09:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:09:15,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-21 21:09:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:15,765 INFO L225 Difference]: With dead ends: 718 [2020-08-21 21:09:15,765 INFO L226 Difference]: Without dead ends: 502 [2020-08-21 21:09:15,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:09:15,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-21 21:09:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 435. [2020-08-21 21:09:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-21 21:09:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 494 transitions. [2020-08-21 21:09:15,869 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 494 transitions. Word has length 84 [2020-08-21 21:09:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:15,870 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 494 transitions. [2020-08-21 21:09:15,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:09:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 494 transitions. [2020-08-21 21:09:15,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 21:09:15,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:15,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:09:15,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:09:15,873 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:15,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:15,873 INFO L82 PathProgramCache]: Analyzing trace with hash 861472934, now seen corresponding path program 1 times [2020-08-21 21:09:15,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:15,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934272212] [2020-08-21 21:09:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,148 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:16,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:09:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:09:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 21:09:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 21:09:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:09:16,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934272212] [2020-08-21 21:09:16,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:16,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:09:16,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605942704] [2020-08-21 21:09:16,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:09:16,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:16,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:09:16,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:09:16,292 INFO L87 Difference]: Start difference. First operand 435 states and 494 transitions. Second operand 9 states. [2020-08-21 21:09:16,704 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:17,847 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:18,119 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:19,203 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:19,465 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:19,689 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:20,068 INFO L93 Difference]: Finished difference Result 544 states and 674 transitions. [2020-08-21 21:09:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 21:09:20,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-21 21:09:20,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:20,074 INFO L225 Difference]: With dead ends: 544 [2020-08-21 21:09:20,074 INFO L226 Difference]: Without dead ends: 541 [2020-08-21 21:09:20,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 21:09:20,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-21 21:09:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 435. [2020-08-21 21:09:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-21 21:09:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 493 transitions. [2020-08-21 21:09:20,175 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 493 transitions. Word has length 88 [2020-08-21 21:09:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:20,176 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 493 transitions. [2020-08-21 21:09:20,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:09:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 493 transitions. [2020-08-21 21:09:20,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-21 21:09:20,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:20,178 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:09:20,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:09:20,179 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:20,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:20,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1149093276, now seen corresponding path program 1 times [2020-08-21 21:09:20,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:20,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126974476] [2020-08-21 21:09:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,411 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:09:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:09:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 21:09:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 21:09:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 21:09:20,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126974476] [2020-08-21 21:09:20,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:20,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:09:20,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719343059] [2020-08-21 21:09:20,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:09:20,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:20,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:09:20,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:09:20,563 INFO L87 Difference]: Start difference. First operand 435 states and 493 transitions. Second operand 9 states. [2020-08-21 21:09:21,484 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:21,714 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:09:21,955 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:22,176 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:23,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:23,391 INFO L93 Difference]: Finished difference Result 960 states and 1180 transitions. [2020-08-21 21:09:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:09:23,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-08-21 21:09:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:23,402 INFO L225 Difference]: With dead ends: 960 [2020-08-21 21:09:23,402 INFO L226 Difference]: Without dead ends: 549 [2020-08-21 21:09:23,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:09:23,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-08-21 21:09:23,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 445. [2020-08-21 21:09:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-08-21 21:09:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 503 transitions. [2020-08-21 21:09:23,503 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 503 transitions. Word has length 104 [2020-08-21 21:09:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:23,504 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 503 transitions. [2020-08-21 21:09:23,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:09:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 503 transitions. [2020-08-21 21:09:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-21 21:09:23,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:23,506 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:09:23,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:09:23,507 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:23,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:23,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1502181658, now seen corresponding path program 1 times [2020-08-21 21:09:23,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:23,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421742561] [2020-08-21 21:09:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,797 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:23,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:09:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:09:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 21:09:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 21:09:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 21:09:23,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421742561] [2020-08-21 21:09:23,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:23,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 21:09:23,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075874380] [2020-08-21 21:09:23,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:09:23,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:23,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:09:23,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:09:23,980 INFO L87 Difference]: Start difference. First operand 445 states and 503 transitions. Second operand 11 states. [2020-08-21 21:09:24,748 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:25,012 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:25,228 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:25,878 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:26,135 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:26,361 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:09:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:27,732 INFO L93 Difference]: Finished difference Result 980 states and 1202 transitions. [2020-08-21 21:09:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:09:27,733 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-08-21 21:09:27,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:27,737 INFO L225 Difference]: With dead ends: 980 [2020-08-21 21:09:27,737 INFO L226 Difference]: Without dead ends: 559 [2020-08-21 21:09:27,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:09:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-08-21 21:09:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 453. [2020-08-21 21:09:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-21 21:09:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 511 transitions. [2020-08-21 21:09:27,848 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 511 transitions. Word has length 104 [2020-08-21 21:09:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:27,849 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 511 transitions. [2020-08-21 21:09:27,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:09:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 511 transitions. [2020-08-21 21:09:27,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-21 21:09:27,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:27,854 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:09:27,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:09:27,855 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:27,855 INFO L82 PathProgramCache]: Analyzing trace with hash -368991065, now seen corresponding path program 1 times [2020-08-21 21:09:27,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:27,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791475246] [2020-08-21 21:09:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,154 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:28,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 21:09:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:09:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 21:09:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 21:09:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 21:09:28,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791475246] [2020-08-21 21:09:28,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:09:28,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:09:28,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793870976] [2020-08-21 21:09:28,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:09:28,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:28,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:09:28,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:09:28,385 INFO L87 Difference]: Start difference. First operand 453 states and 511 transitions. Second operand 7 states. [2020-08-21 21:09:28,883 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:29,348 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:31,771 INFO L93 Difference]: Finished difference Result 1342 states and 1702 transitions. [2020-08-21 21:09:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:09:31,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-08-21 21:09:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:31,778 INFO L225 Difference]: With dead ends: 1342 [2020-08-21 21:09:31,778 INFO L226 Difference]: Without dead ends: 913 [2020-08-21 21:09:31,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:09:31,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-21 21:09:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 793. [2020-08-21 21:09:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-21 21:09:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 929 transitions. [2020-08-21 21:09:31,933 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 929 transitions. Word has length 104 [2020-08-21 21:09:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:31,935 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 929 transitions. [2020-08-21 21:09:31,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:09:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 929 transitions. [2020-08-21 21:09:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 21:09:31,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:31,939 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:09:31,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:09:31,939 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:31,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:31,940 INFO L82 PathProgramCache]: Analyzing trace with hash 38573473, now seen corresponding path program 1 times [2020-08-21 21:09:31,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:31,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751525730] [2020-08-21 21:09:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,259 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:32,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:09:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:09:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:09:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 21:09:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 21:09:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 21:09:32,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751525730] [2020-08-21 21:09:32,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:09:32,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 21:09:32,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900044690] [2020-08-21 21:09:32,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 21:09:32,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:32,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 21:09:32,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 21:09:32,774 INFO L87 Difference]: Start difference. First operand 793 states and 929 transitions. Second operand 17 states. [2020-08-21 21:09:33,438 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:33,759 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:34,004 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:34,238 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:34,858 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:36,095 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:36,410 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:36,733 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:36,984 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:37,311 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:37,625 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:38,164 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 21:09:38,738 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-21 21:09:41,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:41,341 INFO L93 Difference]: Finished difference Result 1649 states and 2014 transitions. [2020-08-21 21:09:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 21:09:41,342 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 108 [2020-08-21 21:09:41,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:41,349 INFO L225 Difference]: With dead ends: 1649 [2020-08-21 21:09:41,349 INFO L226 Difference]: Without dead ends: 880 [2020-08-21 21:09:41,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-21 21:09:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-21 21:09:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 763. [2020-08-21 21:09:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-21 21:09:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 880 transitions. [2020-08-21 21:09:41,495 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 880 transitions. Word has length 108 [2020-08-21 21:09:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:41,495 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 880 transitions. [2020-08-21 21:09:41,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 21:09:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 880 transitions. [2020-08-21 21:09:41,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-21 21:09:41,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:09:41,499 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:09:41,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:09:41,499 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:09:41,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:09:41,501 INFO L82 PathProgramCache]: Analyzing trace with hash 118260142, now seen corresponding path program 1 times [2020-08-21 21:09:41,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:09:41,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380671992] [2020-08-21 21:09:41,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:09:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,793 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:09:41,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:09:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:09:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:09:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:09:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:09:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:09:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:09:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:09:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:09:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 21:09:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 21:09:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 21:09:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:42,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:42,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:42,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 21:09:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:42,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:42,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:09:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:09:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:42,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:09:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:42,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-21 21:09:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 21:09:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:09:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-21 21:09:42,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380671992] [2020-08-21 21:09:42,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:09:42,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 21:09:42,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134428118] [2020-08-21 21:09:42,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 21:09:42,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:09:42,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 21:09:42,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:09:42,216 INFO L87 Difference]: Start difference. First operand 763 states and 880 transitions. Second operand 18 states. [2020-08-21 21:09:42,770 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:43,082 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:43,346 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:43,583 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:09:44,227 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:09:45,400 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:45,744 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:46,023 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:46,288 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:46,605 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:46,879 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:48,109 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:48,346 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:48,607 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:48,842 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:09:50,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:09:50,208 INFO L93 Difference]: Finished difference Result 1402 states and 1720 transitions. [2020-08-21 21:09:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-21 21:09:50,214 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-08-21 21:09:50,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:09:50,215 INFO L225 Difference]: With dead ends: 1402 [2020-08-21 21:09:50,215 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 21:09:50,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-08-21 21:09:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 21:09:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 21:09:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 21:09:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 21:09:50,221 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-08-21 21:09:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:09:50,221 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 21:09:50,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 21:09:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 21:09:50,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 21:09:50,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 21:09:50,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 21:09:50,919 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-21 21:09:51,035 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-21 21:09:51,179 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-21 21:09:51,387 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-21 21:09:51,524 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-21 21:09:52,792 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-21 21:09:53,448 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-21 21:09:54,027 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 259 [2020-08-21 21:09:56,163 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-21 21:09:56,973 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 259