/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:43:18,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:43:18,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:43:18,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:43:18,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:43:18,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:43:18,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:43:18,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:43:18,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:43:18,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:43:18,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:43:18,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:43:18,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:43:18,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:43:18,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:43:18,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:43:18,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:43:18,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:43:18,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:43:18,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:43:18,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:43:18,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:43:18,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:43:18,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:43:18,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:43:18,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:43:18,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:43:18,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:43:18,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:43:18,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:43:18,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:43:18,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:43:18,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:43:18,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:43:18,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:43:18,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:43:18,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:43:18,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:43:18,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:43:18,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:43:18,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:43:18,411 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 [2020-08-18 21:43:18,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:43:18,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:43:18,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:43:18,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:43:18,454 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:43:18,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:43:18,454 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:43:18,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:43:18,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:43:18,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:43:18,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:43:18,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:43:18,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:43:18,457 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:43:18,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:43:18,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:43:18,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:43:18,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:43:18,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:43:18,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:43:18,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:43:18,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:43:18,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:43:18,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:43:18,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:43:18,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:43:18,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:43:18,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:43:18,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:43:18,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:43:18,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:43:18,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:43:18,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:43:18,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:43:18,798 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:43:18,799 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-18 21:43:18,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bd59f1d6/278505b571494d0d82a833744e541f7b/FLAG4feecfc40 [2020-08-18 21:43:19,356 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:43:19,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-18 21:43:19,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bd59f1d6/278505b571494d0d82a833744e541f7b/FLAG4feecfc40 [2020-08-18 21:43:19,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bd59f1d6/278505b571494d0d82a833744e541f7b [2020-08-18 21:43:19,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:43:19,719 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:43:19,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:43:19,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:43:19,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:43:19,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:43:19" (1/1) ... [2020-08-18 21:43:19,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:19, skipping insertion in model container [2020-08-18 21:43:19,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:43:19" (1/1) ... [2020-08-18 21:43:19,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:43:19,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:43:20,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:43:20,257 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:43:20,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:43:20,368 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:43:20,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:20 WrapperNode [2020-08-18 21:43:20,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:43:20,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:43:20,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:43:20,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:43:20,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:20" (1/1) ... [2020-08-18 21:43:20,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:20" (1/1) ... [2020-08-18 21:43:20,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:20" (1/1) ... [2020-08-18 21:43:20,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:20" (1/1) ... [2020-08-18 21:43:20,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:20" (1/1) ... [2020-08-18 21:43:20,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:20" (1/1) ... [2020-08-18 21:43:20,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:20" (1/1) ... [2020-08-18 21:43:20,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:43:20,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:43:20,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:43:20,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:43:20,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:43:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:43:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:43:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:43:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:43:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:43:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:43:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:43:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:43:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:43:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:43:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:43:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:43:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:43:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:43:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:43:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:43:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:43:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:43:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:43:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:43:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:43:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:43:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:43:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:43:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:43:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:43:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:43:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 21:43:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:43:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 21:43:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:43:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:43:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:43:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:43:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:43:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:43:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 21:43:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:43:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 21:43:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 21:43:20,546 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:43:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:43:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:43:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:43:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:43:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:43:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:43:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:43:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:43:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:43:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:43:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:43:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:43:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:43:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:43:20,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:43:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:43:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:43:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:43:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:43:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:43:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:43:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:43:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:43:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:43:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:43:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:43:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:43:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:43:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:43:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:43:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:43:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:43:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:43:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:43:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:43:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:43:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 21:43:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:43:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:43:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:43:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:43:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:43:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:43:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 21:43:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 21:43:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:43:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:43:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:43:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 21:43:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:43:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 21:43:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:43:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:43:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:43:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:43:21,739 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:43:21,740 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:43:21,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:43:21 BoogieIcfgContainer [2020-08-18 21:43:21,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:43:21,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:43:21,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:43:21,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:43:21,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:43:19" (1/3) ... [2020-08-18 21:43:21,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49854e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:43:21, skipping insertion in model container [2020-08-18 21:43:21,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:43:20" (2/3) ... [2020-08-18 21:43:21,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49854e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:43:21, skipping insertion in model container [2020-08-18 21:43:21,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:43:21" (3/3) ... [2020-08-18 21:43:21,755 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2020-08-18 21:43:21,767 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:43:21,776 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:43:21,792 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:43:21,819 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:43:21,820 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:43:21,820 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:43:21,820 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:43:21,820 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:43:21,821 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:43:21,821 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:43:21,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:43:21,845 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-18 21:43:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 21:43:21,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:21,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:21,858 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:21,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:21,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1550424879, now seen corresponding path program 1 times [2020-08-18 21:43:21,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:21,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064685284] [2020-08-18 21:43:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,515 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:43:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 21:43:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:22,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064685284] [2020-08-18 21:43:22,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:22,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:43:22,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144965605] [2020-08-18 21:43:22,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:43:22,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:22,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:43:22,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:43:22,654 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-18 21:43:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:23,866 INFO L93 Difference]: Finished difference Result 312 states and 407 transitions. [2020-08-18 21:43:23,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:43:23,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 21:43:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:23,883 INFO L225 Difference]: With dead ends: 312 [2020-08-18 21:43:23,883 INFO L226 Difference]: Without dead ends: 174 [2020-08-18 21:43:23,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:43:23,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-18 21:43:24,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-08-18 21:43:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 21:43:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-18 21:43:24,037 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2020-08-18 21:43:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:24,038 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-18 21:43:24,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:43:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-18 21:43:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 21:43:24,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:24,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:24,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:43:24,051 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:24,052 INFO L82 PathProgramCache]: Analyzing trace with hash 2147140265, now seen corresponding path program 1 times [2020-08-18 21:43:24,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:24,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808805940] [2020-08-18 21:43:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,384 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:24,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:43:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:43:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:24,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808805940] [2020-08-18 21:43:24,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:24,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:43:24,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061903541] [2020-08-18 21:43:24,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:43:24,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:24,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:43:24,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:43:24,475 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 5 states. [2020-08-18 21:43:24,953 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:25,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:25,952 INFO L93 Difference]: Finished difference Result 253 states and 314 transitions. [2020-08-18 21:43:25,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:43:25,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 21:43:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:25,955 INFO L225 Difference]: With dead ends: 253 [2020-08-18 21:43:25,955 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 21:43:25,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:43:25,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 21:43:25,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-18 21:43:25,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 21:43:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-18 21:43:25,994 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2020-08-18 21:43:25,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:25,994 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-18 21:43:25,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:43:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-18 21:43:25,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 21:43:25,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:25,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:25,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:43:25,997 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:25,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:25,998 INFO L82 PathProgramCache]: Analyzing trace with hash 871775649, now seen corresponding path program 1 times [2020-08-18 21:43:25,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:25,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032601622] [2020-08-18 21:43:25,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,380 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:26,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 21:43:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:43:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:26,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032601622] [2020-08-18 21:43:26,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:26,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:43:26,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870216314] [2020-08-18 21:43:26,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:43:26,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:26,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:43:26,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:43:26,484 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2020-08-18 21:43:26,875 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:27,175 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:27,414 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:27,672 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:28,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:28,958 INFO L93 Difference]: Finished difference Result 266 states and 333 transitions. [2020-08-18 21:43:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:43:28,959 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 21:43:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:28,966 INFO L225 Difference]: With dead ends: 266 [2020-08-18 21:43:28,966 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 21:43:28,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:43:28,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 21:43:29,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-18 21:43:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 21:43:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-18 21:43:29,045 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 57 [2020-08-18 21:43:29,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:29,048 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-18 21:43:29,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:43:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-18 21:43:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 21:43:29,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:29,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:29,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:43:29,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:29,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1442711131, now seen corresponding path program 1 times [2020-08-18 21:43:29,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:29,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146306626] [2020-08-18 21:43:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,346 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:29,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:43:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 21:43:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:43:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:29,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146306626] [2020-08-18 21:43:29,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:29,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:43:29,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081801844] [2020-08-18 21:43:29,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:43:29,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:29,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:43:29,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:43:29,484 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 7 states. [2020-08-18 21:43:29,803 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:31,001 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:31,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:31,637 INFO L93 Difference]: Finished difference Result 370 states and 466 transitions. [2020-08-18 21:43:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:43:31,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-18 21:43:31,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:31,646 INFO L225 Difference]: With dead ends: 370 [2020-08-18 21:43:31,647 INFO L226 Difference]: Without dead ends: 268 [2020-08-18 21:43:31,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:43:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-18 21:43:31,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 219. [2020-08-18 21:43:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-08-18 21:43:31,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2020-08-18 21:43:31,703 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 70 [2020-08-18 21:43:31,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:31,704 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2020-08-18 21:43:31,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:43:31,704 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2020-08-18 21:43:31,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 21:43:31,705 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:31,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:31,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:43:31,706 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:31,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:31,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1583652076, now seen corresponding path program 1 times [2020-08-18 21:43:31,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:31,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835455553] [2020-08-18 21:43:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:31,995 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:31,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:43:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 21:43:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 21:43:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:32,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835455553] [2020-08-18 21:43:32,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:32,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:43:32,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220337464] [2020-08-18 21:43:32,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:43:32,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:32,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:43:32,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:43:32,122 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand 9 states. [2020-08-18 21:43:32,576 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:33,562 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:33,923 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:34,513 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:34,746 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:35,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:35,876 INFO L93 Difference]: Finished difference Result 653 states and 819 transitions. [2020-08-18 21:43:35,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 21:43:35,877 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 21:43:35,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:35,882 INFO L225 Difference]: With dead ends: 653 [2020-08-18 21:43:35,882 INFO L226 Difference]: Without dead ends: 462 [2020-08-18 21:43:35,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 21:43:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-18 21:43:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 386. [2020-08-18 21:43:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-18 21:43:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 442 transitions. [2020-08-18 21:43:35,977 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 442 transitions. Word has length 84 [2020-08-18 21:43:35,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:35,977 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 442 transitions. [2020-08-18 21:43:35,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:43:35,978 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 442 transitions. [2020-08-18 21:43:35,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 21:43:35,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:35,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:35,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:43:35,980 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:35,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1422526648, now seen corresponding path program 1 times [2020-08-18 21:43:35,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:35,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462910562] [2020-08-18 21:43:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,268 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:36,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:43:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 21:43:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 21:43:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:43:36,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462910562] [2020-08-18 21:43:36,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:36,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:43:36,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254415748] [2020-08-18 21:43:36,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:43:36,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:36,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:43:36,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:43:36,402 INFO L87 Difference]: Start difference. First operand 386 states and 442 transitions. Second operand 10 states. [2020-08-18 21:43:36,749 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:37,997 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:39,086 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:39,335 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:39,618 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:40,110 INFO L93 Difference]: Finished difference Result 858 states and 1059 transitions. [2020-08-18 21:43:40,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 21:43:40,111 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 21:43:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:40,116 INFO L225 Difference]: With dead ends: 858 [2020-08-18 21:43:40,116 INFO L226 Difference]: Without dead ends: 500 [2020-08-18 21:43:40,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 21:43:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-18 21:43:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-18 21:43:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 21:43:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 439 transitions. [2020-08-18 21:43:40,200 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 439 transitions. Word has length 88 [2020-08-18 21:43:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:40,200 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 439 transitions. [2020-08-18 21:43:40,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:43:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 439 transitions. [2020-08-18 21:43:40,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 21:43:40,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:40,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:40,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:43:40,203 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:40,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:40,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1956386739, now seen corresponding path program 1 times [2020-08-18 21:43:40,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:40,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103786167] [2020-08-18 21:43:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,449 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:40,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:43:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 21:43:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 21:43:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:40,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:43:40,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103786167] [2020-08-18 21:43:40,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:40,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:43:40,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470595353] [2020-08-18 21:43:40,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:43:40,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:40,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:43:40,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:43:40,637 INFO L87 Difference]: Start difference. First operand 385 states and 439 transitions. Second operand 10 states. [2020-08-18 21:43:41,547 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:41,795 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:43:42,045 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:42,276 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:43,493 INFO L93 Difference]: Finished difference Result 865 states and 1088 transitions. [2020-08-18 21:43:43,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:43:43,494 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-08-18 21:43:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:43,497 INFO L225 Difference]: With dead ends: 865 [2020-08-18 21:43:43,498 INFO L226 Difference]: Without dead ends: 508 [2020-08-18 21:43:43,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:43:43,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-18 21:43:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 395. [2020-08-18 21:43:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-18 21:43:43,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 449 transitions. [2020-08-18 21:43:43,580 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 449 transitions. Word has length 104 [2020-08-18 21:43:43,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:43,580 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 449 transitions. [2020-08-18 21:43:43,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:43:43,580 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 449 transitions. [2020-08-18 21:43:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 21:43:43,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:43,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:43,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:43:43,583 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:43,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:43,583 INFO L82 PathProgramCache]: Analyzing trace with hash -28114037, now seen corresponding path program 1 times [2020-08-18 21:43:43,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:43,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215320756] [2020-08-18 21:43:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:43,916 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:43,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:43,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:43,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:43,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:43,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:43:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 21:43:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 21:43:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:43:44,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215320756] [2020-08-18 21:43:44,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:44,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:43:44,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644649162] [2020-08-18 21:43:44,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:43:44,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:44,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:43:44,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:43:44,125 INFO L87 Difference]: Start difference. First operand 395 states and 449 transitions. Second operand 12 states. [2020-08-18 21:43:44,803 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:43:45,055 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:45,295 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:46,059 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:46,325 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:46,558 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:43:47,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:47,870 INFO L93 Difference]: Finished difference Result 885 states and 1110 transitions. [2020-08-18 21:43:47,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:43:47,870 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-08-18 21:43:47,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:47,874 INFO L225 Difference]: With dead ends: 885 [2020-08-18 21:43:47,874 INFO L226 Difference]: Without dead ends: 518 [2020-08-18 21:43:47,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 21:43:47,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-18 21:43:47,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 403. [2020-08-18 21:43:47,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-08-18 21:43:47,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 457 transitions. [2020-08-18 21:43:47,954 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 457 transitions. Word has length 104 [2020-08-18 21:43:47,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:47,954 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 457 transitions. [2020-08-18 21:43:47,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:43:47,955 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 457 transitions. [2020-08-18 21:43:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 21:43:47,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:47,956 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:47,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:43:47,957 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:47,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:47,957 INFO L82 PathProgramCache]: Analyzing trace with hash -268654166, now seen corresponding path program 1 times [2020-08-18 21:43:47,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:47,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780812042] [2020-08-18 21:43:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,223 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:48,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:43:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:43:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 21:43:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 21:43:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:43:48,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780812042] [2020-08-18 21:43:48,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:43:48,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:43:48,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217072696] [2020-08-18 21:43:48,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:43:48,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:48,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:43:48,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:43:48,390 INFO L87 Difference]: Start difference. First operand 403 states and 457 transitions. Second operand 8 states. [2020-08-18 21:43:48,778 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:49,320 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:43:51,805 INFO L93 Difference]: Finished difference Result 1233 states and 1597 transitions. [2020-08-18 21:43:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 21:43:51,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-08-18 21:43:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:43:51,812 INFO L225 Difference]: With dead ends: 1233 [2020-08-18 21:43:51,812 INFO L226 Difference]: Without dead ends: 858 [2020-08-18 21:43:51,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 21:43:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-18 21:43:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 713. [2020-08-18 21:43:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-08-18 21:43:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 835 transitions. [2020-08-18 21:43:51,938 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 835 transitions. Word has length 104 [2020-08-18 21:43:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:43:51,938 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 835 transitions. [2020-08-18 21:43:51,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:43:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 835 transitions. [2020-08-18 21:43:51,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 21:43:51,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:43:51,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:43:51,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:43:51,941 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:43:51,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:43:51,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1852641244, now seen corresponding path program 1 times [2020-08-18 21:43:51,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:43:51,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466700115] [2020-08-18 21:43:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:43:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,215 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:43:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:43:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:43:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:43:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:43:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:43:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:43:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:43:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:43:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:43:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:43:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:43:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:43:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 21:43:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 21:43:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:43:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 21:43:52,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466700115] [2020-08-18 21:43:52,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:43:52,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 21:43:52,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011305884] [2020-08-18 21:43:52,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 21:43:52,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:43:52,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 21:43:52,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:43:52,634 INFO L87 Difference]: Start difference. First operand 713 states and 835 transitions. Second operand 18 states. [2020-08-18 21:43:53,074 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:53,392 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 21:43:53,658 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:53,898 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:54,562 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:43:55,675 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:56,026 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:56,305 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:56,595 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:56,939 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:57,218 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:43:57,819 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 21:43:58,411 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-18 21:44:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:00,615 INFO L93 Difference]: Finished difference Result 1515 states and 1873 transitions. [2020-08-18 21:44:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-18 21:44:00,615 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-08-18 21:44:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:00,622 INFO L225 Difference]: With dead ends: 1515 [2020-08-18 21:44:00,622 INFO L226 Difference]: Without dead ends: 830 [2020-08-18 21:44:00,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-18 21:44:00,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-18 21:44:00,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 694. [2020-08-18 21:44:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-08-18 21:44:00,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 803 transitions. [2020-08-18 21:44:00,744 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 803 transitions. Word has length 108 [2020-08-18 21:44:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:00,745 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 803 transitions. [2020-08-18 21:44:00,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 21:44:00,745 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 803 transitions. [2020-08-18 21:44:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-18 21:44:00,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:44:00,748 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:44:00,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:44:00,749 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:44:00,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:44:00,749 INFO L82 PathProgramCache]: Analyzing trace with hash 760447467, now seen corresponding path program 1 times [2020-08-18 21:44:00,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:44:00,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392488637] [2020-08-18 21:44:00,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:44:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,040 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:44:01,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:44:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:44:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:44:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:44:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:44:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:44:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 21:44:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:44:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:44:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:44:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:44:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 21:44:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:44:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:44:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:44:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:44:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 21:44:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-18 21:44:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:44:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-18 21:44:01,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392488637] [2020-08-18 21:44:01,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:44:01,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 21:44:01,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707797839] [2020-08-18 21:44:01,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 21:44:01,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:44:01,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 21:44:01,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:44:01,401 INFO L87 Difference]: Start difference. First operand 694 states and 803 transitions. Second operand 19 states. [2020-08-18 21:44:02,034 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:02,405 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 21:44:02,668 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:02,942 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:44:03,718 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:44:04,838 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:05,169 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:05,450 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:05,752 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:06,090 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:06,364 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:07,688 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:07,945 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:08,236 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:08,493 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:44:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:44:09,461 INFO L93 Difference]: Finished difference Result 1298 states and 1607 transitions. [2020-08-18 21:44:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 21:44:09,461 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 160 [2020-08-18 21:44:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:44:09,463 INFO L225 Difference]: With dead ends: 1298 [2020-08-18 21:44:09,463 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 21:44:09,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=561, Invalid=2519, Unknown=0, NotChecked=0, Total=3080 [2020-08-18 21:44:09,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 21:44:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 21:44:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 21:44:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 21:44:09,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-18 21:44:09,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:44:09,469 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 21:44:09,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 21:44:09,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 21:44:09,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 21:44:09,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:44:09,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 21:44:12,374 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 326 DAG size of output: 274 [2020-08-18 21:44:12,571 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 204 [2020-08-18 21:44:12,705 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 201 [2020-08-18 21:44:12,809 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 205 [2020-08-18 21:44:13,302 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 201 [2020-08-18 21:44:13,423 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 204 [2020-08-18 21:44:13,609 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 203 [2020-08-18 21:44:15,414 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 278 [2020-08-18 21:44:15,869 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 260 [2020-08-18 21:44:16,523 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 260