/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_spec5_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:17:36,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:17:36,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:17:36,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:17:36,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:17:36,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:17:36,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:17:36,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:17:36,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:17:36,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:17:36,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:17:36,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:17:36,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:17:36,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:17:36,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:17:36,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:17:36,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:17:36,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:17:36,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:17:36,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:17:36,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:17:36,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:17:36,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:17:36,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:17:36,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:17:36,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:17:36,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:17:36,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:17:36,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:17:36,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:17:36,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:17:36,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:17:36,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:17:36,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:17:36,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:17:36,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:17:36,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:17:36,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:17:36,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:17:36,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:17:36,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:17:36,489 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 21:17:36,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:17:36,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:17:36,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:17:36,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:17:36,536 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:17:36,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:17:36,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:17:36,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:17:36,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:17:36,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:17:36,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:17:36,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:17:36,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:17:36,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:17:36,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:17:36,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:17:36,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:17:36,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:17:36,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:17:36,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:17:36,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:17:36,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:17:36,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:17:36,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:17:36,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:17:36,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:17:36,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:17:36,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:17:36,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:17:36,543 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 21:17:36,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:17:36,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:17:36,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:17:36,869 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:17:36,871 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:17:36,872 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-21 21:17:36,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad4cb792c/418e0eb360ca48b084f598c6423c9ee0/FLAG86e76ccb0 [2020-08-21 21:17:37,479 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:17:37,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-21 21:17:37,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad4cb792c/418e0eb360ca48b084f598c6423c9ee0/FLAG86e76ccb0 [2020-08-21 21:17:37,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad4cb792c/418e0eb360ca48b084f598c6423c9ee0 [2020-08-21 21:17:37,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:17:37,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:17:37,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:17:37,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:17:37,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:17:37,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:17:37" (1/1) ... [2020-08-21 21:17:37,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9949ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:17:37, skipping insertion in model container [2020-08-21 21:17:37,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:17:37" (1/1) ... [2020-08-21 21:17:37,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:17:37,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:17:38,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:17:38,453 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:17:38,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:17:38,585 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:17:38,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:17:38 WrapperNode [2020-08-21 21:17:38,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:17:38,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:17:38,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:17:38,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:17:38,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:17:38" (1/1) ... [2020-08-21 21:17:38,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:17:38" (1/1) ... [2020-08-21 21:17:38,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:17:38" (1/1) ... [2020-08-21 21:17:38,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:17:38" (1/1) ... [2020-08-21 21:17:38,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:17:38" (1/1) ... [2020-08-21 21:17:38,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:17:38" (1/1) ... [2020-08-21 21:17:38,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:17:38" (1/1) ... [2020-08-21 21:17:38,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:17:38,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:17:38,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:17:38,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:17:38,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:17:38" (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 21:17:38,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:17:38,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:17:38,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:17:38,763 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:17:38,763 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:17:38,764 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:17:38,764 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:17:38,765 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:17:38,765 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:17:38,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:17:38,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:17:38,766 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:17:38,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:17:38,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 21:17:38,767 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:17:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:17:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:17:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:17:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:17:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:17:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:17:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:17:38,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 21:17:38,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:17:38,769 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:17:38,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:17:38,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:17:38,770 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:17:38,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:17:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:17:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:17:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:17:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:17:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:17:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:17:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:17:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:17:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:17:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:17:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 21:17:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 21:17:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 21:17:38,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:17:38,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:17:38,773 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:17:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:17:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:17:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:17:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:17:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 21:17:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:17:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:17:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:17:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:17:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:17:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 21:17:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 21:17:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:17:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:17:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:17:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:17:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 21:17:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:17:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:17:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:17:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:17:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:17:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:17:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:17:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:17:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:17:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:17:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 21:17:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:17:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:17:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:17:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:17:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:17:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:17:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:17:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:17:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:17:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:17:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:17:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:17:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:17:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:17:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:17:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:17:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:17:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:17:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:17:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:17:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:17:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:17:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:17:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:17:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:17:40,079 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:17:40,079 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:17:40,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:17:40 BoogieIcfgContainer [2020-08-21 21:17:40,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:17:40,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:17:40,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:17:40,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:17:40,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:17:37" (1/3) ... [2020-08-21 21:17:40,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a41af2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:17:40, skipping insertion in model container [2020-08-21 21:17:40,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:17:38" (2/3) ... [2020-08-21 21:17:40,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a41af2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:17:40, skipping insertion in model container [2020-08-21 21:17:40,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:17:40" (3/3) ... [2020-08-21 21:17:40,102 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2020-08-21 21:17:40,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:17:40,123 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:17:40,138 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:17:40,169 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:17:40,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:17:40,170 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:17:40,170 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:17:40,171 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:17:40,171 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:17:40,172 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:17:40,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:17:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-21 21:17:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 21:17:40,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:40,214 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] [2020-08-21 21:17:40,215 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:40,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:40,221 INFO L82 PathProgramCache]: Analyzing trace with hash 464701397, now seen corresponding path program 1 times [2020-08-21 21:17:40,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:40,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468587920] [2020-08-21 21:17:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:40,897 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:40,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:40,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:40,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:40,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:40,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:17:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:17:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:17:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:41,061 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 21:17:41,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468587920] [2020-08-21 21:17:41,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:41,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:17:41,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565797887] [2020-08-21 21:17:41,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:17:41,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:41,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:17:41,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:17:41,091 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-21 21:17:42,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:42,203 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2020-08-21 21:17:42,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:17:42,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 21:17:42,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:42,220 INFO L225 Difference]: With dead ends: 303 [2020-08-21 21:17:42,221 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 21:17:42,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:17:42,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 21:17:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-21 21:17:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 21:17:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-21 21:17:42,326 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 59 [2020-08-21 21:17:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:42,327 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-21 21:17:42,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:17:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-21 21:17:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 21:17:42,331 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:42,331 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] [2020-08-21 21:17:42,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:17:42,331 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:42,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:42,332 INFO L82 PathProgramCache]: Analyzing trace with hash -103265726, now seen corresponding path program 1 times [2020-08-21 21:17:42,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:42,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580937203] [2020-08-21 21:17:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:42,654 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:42,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:42,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:42,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:42,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:42,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:17:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:42,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:17:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:42,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 21:17:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:42,718 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 21:17:42,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580937203] [2020-08-21 21:17:42,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:42,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:17:42,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075112498] [2020-08-21 21:17:42,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:17:42,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:42,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:17:42,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:17:42,722 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 5 states. [2020-08-21 21:17:43,275 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:44,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:44,078 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2020-08-21 21:17:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 21:17:44,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 21:17:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:44,084 INFO L225 Difference]: With dead ends: 248 [2020-08-21 21:17:44,084 INFO L226 Difference]: Without dead ends: 156 [2020-08-21 21:17:44,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:17:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-21 21:17:44,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-21 21:17:44,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-21 21:17:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-21 21:17:44,144 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 60 [2020-08-21 21:17:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:44,145 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-21 21:17:44,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:17:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-21 21:17:44,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 21:17:44,153 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:44,153 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] [2020-08-21 21:17:44,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:17:44,154 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:44,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:44,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1838047012, now seen corresponding path program 1 times [2020-08-21 21:17:44,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:44,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016787768] [2020-08-21 21:17:44,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:44,546 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:44,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:44,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:44,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:44,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:44,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:44,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:44,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:17:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:44,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:44,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 21:17:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:44,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 21:17:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:44,645 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 21:17:44,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016787768] [2020-08-21 21:17:44,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:44,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:17:44,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333112832] [2020-08-21 21:17:44,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:17:44,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:44,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:17:44,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:17:44,648 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 9 states. [2020-08-21 21:17:45,087 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:45,407 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:45,665 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:45,909 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:47,088 INFO L93 Difference]: Finished difference Result 257 states and 316 transitions. [2020-08-21 21:17:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:17:47,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 21:17:47,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:47,091 INFO L225 Difference]: With dead ends: 257 [2020-08-21 21:17:47,091 INFO L226 Difference]: Without dead ends: 156 [2020-08-21 21:17:47,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:17:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-21 21:17:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-21 21:17:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-21 21:17:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-21 21:17:47,124 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 64 [2020-08-21 21:17:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:47,124 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-21 21:17:47,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:17:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-21 21:17:47,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-21 21:17:47,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:47,126 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] [2020-08-21 21:17:47,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:17:47,127 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:47,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:47,127 INFO L82 PathProgramCache]: Analyzing trace with hash -745886990, now seen corresponding path program 1 times [2020-08-21 21:17:47,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:47,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274857644] [2020-08-21 21:17:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,435 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:47,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:17:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:17:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 21:17:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 21:17:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:47,565 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 21:17:47,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274857644] [2020-08-21 21:17:47,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:47,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:17:47,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786750457] [2020-08-21 21:17:47,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:17:47,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:47,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:17:47,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:17:47,568 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 7 states. [2020-08-21 21:17:47,965 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:49,373 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:49,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:49,919 INFO L93 Difference]: Finished difference Result 356 states and 444 transitions. [2020-08-21 21:17:49,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:17:49,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-21 21:17:49,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:49,924 INFO L225 Difference]: With dead ends: 356 [2020-08-21 21:17:49,924 INFO L226 Difference]: Without dead ends: 255 [2020-08-21 21:17:49,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 21:17:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-21 21:17:49,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-21 21:17:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-21 21:17:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 244 transitions. [2020-08-21 21:17:49,974 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 244 transitions. Word has length 77 [2020-08-21 21:17:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:49,974 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 244 transitions. [2020-08-21 21:17:49,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:17:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 244 transitions. [2020-08-21 21:17:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-21 21:17:49,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:49,976 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] [2020-08-21 21:17:49,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:17:49,977 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:49,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:49,977 INFO L82 PathProgramCache]: Analyzing trace with hash -47194942, now seen corresponding path program 1 times [2020-08-21 21:17:49,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:49,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508674988] [2020-08-21 21:17:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,298 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:17:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:17:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 21:17:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 21:17:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 21:17:50,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508674988] [2020-08-21 21:17:50,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:50,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:17:50,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279155075] [2020-08-21 21:17:50,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:17:50,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:50,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:17:50,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:17:50,440 INFO L87 Difference]: Start difference. First operand 212 states and 244 transitions. Second operand 9 states. [2020-08-21 21:17:51,019 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:51,679 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:52,414 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:17:52,735 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:53,157 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:53,405 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:53,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:54,000 INFO L93 Difference]: Finished difference Result 438 states and 534 transitions. [2020-08-21 21:17:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 21:17:54,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-21 21:17:54,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:54,004 INFO L225 Difference]: With dead ends: 438 [2020-08-21 21:17:54,005 INFO L226 Difference]: Without dead ends: 254 [2020-08-21 21:17:54,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 21:17:54,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-21 21:17:54,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2020-08-21 21:17:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-21 21:17:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2020-08-21 21:17:54,055 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 91 [2020-08-21 21:17:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:54,056 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2020-08-21 21:17:54,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:17:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2020-08-21 21:17:54,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 21:17:54,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:54,058 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] [2020-08-21 21:17:54,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:17:54,058 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:54,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:54,058 INFO L82 PathProgramCache]: Analyzing trace with hash -238329201, now seen corresponding path program 1 times [2020-08-21 21:17:54,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:54,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448379498] [2020-08-21 21:17:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,332 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:54,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:17:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:17:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 21:17:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 21:17:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:54,460 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 21:17:54,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448379498] [2020-08-21 21:17:54,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:54,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 21:17:54,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952728917] [2020-08-21 21:17:54,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 21:17:54,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:54,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 21:17:54,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 21:17:54,462 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand 9 states. [2020-08-21 21:17:55,479 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:17:55,782 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:17:56,028 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:56,264 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:17:56,983 INFO L93 Difference]: Finished difference Result 436 states and 528 transitions. [2020-08-21 21:17:56,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:17:56,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 21:17:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:17:56,986 INFO L225 Difference]: With dead ends: 436 [2020-08-21 21:17:56,986 INFO L226 Difference]: Without dead ends: 253 [2020-08-21 21:17:56,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:17:56,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-21 21:17:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 216. [2020-08-21 21:17:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-21 21:17:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2020-08-21 21:17:57,029 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 92 [2020-08-21 21:17:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:17:57,029 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2020-08-21 21:17:57,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 21:17:57,030 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2020-08-21 21:17:57,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 21:17:57,031 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:17:57,031 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] [2020-08-21 21:17:57,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:17:57,031 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:17:57,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:17:57,032 INFO L82 PathProgramCache]: Analyzing trace with hash 463270673, now seen corresponding path program 1 times [2020-08-21 21:17:57,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:17:57,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859766691] [2020-08-21 21:17:57,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:17:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,336 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:17:57,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:17:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:17:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:17:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:17:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:17:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:17:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:17:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:17:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:17:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:17:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:17:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 21:17:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 21:17:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:17:57,491 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 21:17:57,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859766691] [2020-08-21 21:17:57,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:17:57,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 21:17:57,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910902588] [2020-08-21 21:17:57,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:17:57,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:17:57,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:17:57,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:17:57,494 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 11 states. [2020-08-21 21:17:58,068 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:58,315 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:58,553 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:59,214 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:59,503 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:17:59,753 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:18:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:18:00,542 INFO L93 Difference]: Finished difference Result 448 states and 548 transitions. [2020-08-21 21:18:00,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 21:18:00,543 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-21 21:18:00,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:18:00,547 INFO L225 Difference]: With dead ends: 448 [2020-08-21 21:18:00,547 INFO L226 Difference]: Without dead ends: 260 [2020-08-21 21:18:00,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:18:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-08-21 21:18:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2020-08-21 21:18:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-21 21:18:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2020-08-21 21:18:00,609 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 92 [2020-08-21 21:18:00,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:18:00,611 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2020-08-21 21:18:00,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:18:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2020-08-21 21:18:00,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 21:18:00,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:18:00,615 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] [2020-08-21 21:18:00,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:18:00,616 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:18:00,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:18:00,616 INFO L82 PathProgramCache]: Analyzing trace with hash -2106215726, now seen corresponding path program 1 times [2020-08-21 21:18:00,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:18:00,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130736090] [2020-08-21 21:18:00,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:18:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:00,903 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:18:00,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:00,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:18:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:00,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:18:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:00,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:18:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:00,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:18:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:00,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:18:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:00,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:00,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:18:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:00,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:00,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:01,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:01,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:18:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:01,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 21:18:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:01,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 21:18:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:01,034 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 21:18:01,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130736090] [2020-08-21 21:18:01,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:18:01,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:18:01,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44229699] [2020-08-21 21:18:01,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:18:01,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:18:01,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:18:01,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:18:01,036 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand 7 states. [2020-08-21 21:18:01,591 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:18:02,333 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:18:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:18:03,924 INFO L93 Difference]: Finished difference Result 617 states and 772 transitions. [2020-08-21 21:18:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 21:18:03,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-21 21:18:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:18:03,929 INFO L225 Difference]: With dead ends: 617 [2020-08-21 21:18:03,929 INFO L226 Difference]: Without dead ends: 425 [2020-08-21 21:18:03,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:18:03,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-08-21 21:18:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 387. [2020-08-21 21:18:04,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-21 21:18:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 454 transitions. [2020-08-21 21:18:04,009 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 454 transitions. Word has length 92 [2020-08-21 21:18:04,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:18:04,009 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 454 transitions. [2020-08-21 21:18:04,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:18:04,009 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 454 transitions. [2020-08-21 21:18:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-21 21:18:04,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:18:04,011 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] [2020-08-21 21:18:04,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 21:18:04,011 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:18:04,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:18:04,012 INFO L82 PathProgramCache]: Analyzing trace with hash -302189332, now seen corresponding path program 1 times [2020-08-21 21:18:04,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:18:04,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368529138] [2020-08-21 21:18:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:18:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,336 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:18:04,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:18:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:18:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:18:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:18:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:18:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 21:18:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 21:18:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:18:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 21:18:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 21:18:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:04,481 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 21:18:04,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368529138] [2020-08-21 21:18:04,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:18:04,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 21:18:04,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379196323] [2020-08-21 21:18:04,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 21:18:04,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:18:04,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 21:18:04,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:18:04,483 INFO L87 Difference]: Start difference. First operand 387 states and 454 transitions. Second operand 12 states. [2020-08-21 21:18:05,013 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:18:05,618 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:18:06,580 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:06,891 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:07,139 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:18:07,408 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:07,670 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:08,772 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:18:09,031 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:18:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:18:09,568 INFO L93 Difference]: Finished difference Result 1065 states and 1331 transitions. [2020-08-21 21:18:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 21:18:09,573 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-21 21:18:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:18:09,579 INFO L225 Difference]: With dead ends: 1065 [2020-08-21 21:18:09,579 INFO L226 Difference]: Without dead ends: 776 [2020-08-21 21:18:09,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 21:18:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-21 21:18:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 666. [2020-08-21 21:18:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-08-21 21:18:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 774 transitions. [2020-08-21 21:18:09,710 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 774 transitions. Word has length 96 [2020-08-21 21:18:09,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:18:09,710 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 774 transitions. [2020-08-21 21:18:09,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 21:18:09,711 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 774 transitions. [2020-08-21 21:18:09,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 21:18:09,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:18:09,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 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] [2020-08-21 21:18:09,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 21:18:09,713 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:18:09,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:18:09,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1029431621, now seen corresponding path program 1 times [2020-08-21 21:18:09,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:18:09,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474811591] [2020-08-21 21:18:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:18:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,035 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:18:10,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:18:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:18:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:18:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:18:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:18:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:18:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:18:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:18:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:18:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 21:18:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 21:18:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 21:18:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:18:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 21:18:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 21:18:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 21:18:10,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474811591] [2020-08-21 21:18:10,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:18:10,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 21:18:10,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976140514] [2020-08-21 21:18:10,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 21:18:10,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:18:10,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 21:18:10,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 21:18:10,327 INFO L87 Difference]: Start difference. First operand 666 states and 774 transitions. Second operand 16 states. [2020-08-21 21:18:11,171 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:18:11,518 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 21:18:11,794 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 21:18:12,052 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 21:18:12,633 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:18:12,907 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:18:13,681 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:18:14,040 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:18:14,893 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:15,164 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:18:15,448 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:15,769 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:18:16,367 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:18:16,768 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:18:17,149 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:18:17,814 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:18:18,098 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:18:18,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:18:18,783 INFO L93 Difference]: Finished difference Result 1445 states and 1735 transitions. [2020-08-21 21:18:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 21:18:18,784 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-21 21:18:18,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:18:18,790 INFO L225 Difference]: With dead ends: 1445 [2020-08-21 21:18:18,790 INFO L226 Difference]: Without dead ends: 873 [2020-08-21 21:18:18,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 21:18:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-08-21 21:18:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 794. [2020-08-21 21:18:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-21 21:18:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 932 transitions. [2020-08-21 21:18:18,942 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 932 transitions. Word has length 157 [2020-08-21 21:18:18,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:18:18,945 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 932 transitions. [2020-08-21 21:18:18,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 21:18:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 932 transitions. [2020-08-21 21:18:18,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-21 21:18:18,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:18:18,960 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-21 21:18:18,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 21:18:18,960 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:18:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:18:18,960 INFO L82 PathProgramCache]: Analyzing trace with hash 321853011, now seen corresponding path program 1 times [2020-08-21 21:18:18,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:18:18,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449457357] [2020-08-21 21:18:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:18:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,227 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:18:19,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:18:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:18:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:18:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:18:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:18:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:18:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:18:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:18:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:18:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 21:18:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:18:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:18:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:18:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-21 21:18:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:18:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:18:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:18:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-21 21:18:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 21:18:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:18:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-21 21:18:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-21 21:18:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-08-21 21:18:19,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449457357] [2020-08-21 21:18:19,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:18:19,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 21:18:19,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425459951] [2020-08-21 21:18:19,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 21:18:19,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:18:19,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 21:18:19,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:18:19,653 INFO L87 Difference]: Start difference. First operand 794 states and 932 transitions. Second operand 15 states. [2020-08-21 21:18:21,097 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:18:21,350 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:18:21,584 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:18:21,821 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:18:23,187 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:18:24,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:18:24,052 INFO L93 Difference]: Finished difference Result 2078 states and 2545 transitions. [2020-08-21 21:18:24,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 21:18:24,053 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-21 21:18:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:18:24,061 INFO L225 Difference]: With dead ends: 2078 [2020-08-21 21:18:24,061 INFO L226 Difference]: Without dead ends: 1225 [2020-08-21 21:18:24,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 21:18:24,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-08-21 21:18:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1039. [2020-08-21 21:18:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-08-21 21:18:24,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1251 transitions. [2020-08-21 21:18:24,273 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1251 transitions. Word has length 273 [2020-08-21 21:18:24,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:18:24,274 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1251 transitions. [2020-08-21 21:18:24,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 21:18:24,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1251 transitions. [2020-08-21 21:18:24,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-21 21:18:24,282 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:18:24,282 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-21 21:18:24,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 21:18:24,283 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:18:24,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:18:24,283 INFO L82 PathProgramCache]: Analyzing trace with hash -955707756, now seen corresponding path program 1 times [2020-08-21 21:18:24,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:18:24,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801048063] [2020-08-21 21:18:24,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:18:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,592 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:18:24,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:18:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:18:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:18:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:18:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:18:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:18:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:18:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:18:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:18:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 21:18:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:18:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:18:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:18:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:18:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-21 21:18:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:18:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:18:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:18:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-21 21:18:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 21:18:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-21 21:18:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:18:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 21:18:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:24,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 21:18:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 36 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-08-21 21:18:25,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801048063] [2020-08-21 21:18:25,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:18:25,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 21:18:25,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674762174] [2020-08-21 21:18:25,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 21:18:25,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:18:25,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 21:18:25,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 21:18:25,015 INFO L87 Difference]: Start difference. First operand 1039 states and 1251 transitions. Second operand 16 states. [2020-08-21 21:18:25,698 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:18:26,020 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:18:26,286 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:18:26,537 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 21:18:27,187 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:27,907 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:18:28,260 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:28,532 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:29,105 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:29,853 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:30,093 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:30,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:18:30,559 INFO L93 Difference]: Finished difference Result 1968 states and 2405 transitions. [2020-08-21 21:18:30,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 21:18:30,559 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-21 21:18:30,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:18:30,568 INFO L225 Difference]: With dead ends: 1968 [2020-08-21 21:18:30,569 INFO L226 Difference]: Without dead ends: 1042 [2020-08-21 21:18:30,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 21:18:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-21 21:18:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 999. [2020-08-21 21:18:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-08-21 21:18:30,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1185 transitions. [2020-08-21 21:18:30,808 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1185 transitions. Word has length 283 [2020-08-21 21:18:30,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:18:30,809 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1185 transitions. [2020-08-21 21:18:30,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 21:18:30,809 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1185 transitions. [2020-08-21 21:18:30,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-21 21:18:30,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:18:30,820 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-21 21:18:30,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 21:18:30,820 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:18:30,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:18:30,821 INFO L82 PathProgramCache]: Analyzing trace with hash 746778921, now seen corresponding path program 1 times [2020-08-21 21:18:30,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:18:30,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881763640] [2020-08-21 21:18:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:18:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,131 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:18:31,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:18:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:18:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:18:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:18:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:18:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:18:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:18:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:18:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:18:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 21:18:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:18:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:18:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:18:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:18:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-21 21:18:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:18:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:18:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:18:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-21 21:18:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 21:18:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 21:18:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:18:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-21 21:18:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-21 21:18:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-08-21 21:18:31,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881763640] [2020-08-21 21:18:31,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:18:31,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 21:18:31,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146545912] [2020-08-21 21:18:31,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 21:18:31,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:18:31,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 21:18:31,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:18:31,433 INFO L87 Difference]: Start difference. First operand 999 states and 1185 transitions. Second operand 11 states. [2020-08-21 21:18:32,912 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 21:18:33,188 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 21:18:33,426 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:18:33,656 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:18:34,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:18:34,066 INFO L93 Difference]: Finished difference Result 1920 states and 2314 transitions. [2020-08-21 21:18:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:18:34,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 284 [2020-08-21 21:18:34,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:18:34,076 INFO L225 Difference]: With dead ends: 1920 [2020-08-21 21:18:34,076 INFO L226 Difference]: Without dead ends: 1034 [2020-08-21 21:18:34,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 21:18:34,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-08-21 21:18:34,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1009. [2020-08-21 21:18:34,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-08-21 21:18:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1195 transitions. [2020-08-21 21:18:34,323 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1195 transitions. Word has length 284 [2020-08-21 21:18:34,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:18:34,326 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1195 transitions. [2020-08-21 21:18:34,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 21:18:34,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1195 transitions. [2020-08-21 21:18:34,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-21 21:18:34,334 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:18:34,335 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-21 21:18:34,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 21:18:34,335 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:18:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:18:34,336 INFO L82 PathProgramCache]: Analyzing trace with hash -427824693, now seen corresponding path program 1 times [2020-08-21 21:18:34,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:18:34,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56241700] [2020-08-21 21:18:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:18:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,674 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:18:34,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:18:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:18:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:18:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 21:18:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:18:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:18:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 21:18:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:18:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:18:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 21:18:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:18:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:18:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:18:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 21:18:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-21 21:18:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:18:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 21:18:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 21:18:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 21:18:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-21 21:18:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:18:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-21 21:18:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:34,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:35,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:18:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:35,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:18:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:35,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:18:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:35,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-21 21:18:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:35,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-21 21:18:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:18:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 86 proven. 45 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-08-21 21:18:35,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56241700] [2020-08-21 21:18:35,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:18:35,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 21:18:35,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617572490] [2020-08-21 21:18:35,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 21:18:35,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:18:35,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 21:18:35,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-08-21 21:18:35,137 INFO L87 Difference]: Start difference. First operand 1009 states and 1195 transitions. Second operand 15 states.