/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:24:17,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:24:17,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:24:17,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:24:17,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:24:17,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:24:17,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:24:17,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:24:17,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:24:17,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:24:17,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:24:17,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:24:17,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:24:17,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:24:17,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:24:17,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:24:17,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:24:17,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:24:17,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:24:17,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:24:17,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:24:17,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:24:17,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:24:17,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:24:17,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:24:17,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:24:17,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:24:17,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:24:17,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:24:17,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:24:17,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:24:17,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:24:17,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:24:17,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:24:17,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:24:17,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:24:17,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:24:17,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:24:17,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:24:17,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:24:17,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:24:17,460 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 10:24:17,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:24:17,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:24:17,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:24:17,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:24:17,509 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:24:17,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:24:17,510 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:24:17,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:24:17,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:24:17,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:24:17,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:24:17,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:24:17,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:24:17,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:24:17,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:24:17,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:24:17,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:24:17,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:24:17,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:24:17,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:24:17,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:24:17,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:24:17,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:24:17,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:24:17,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:24:17,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:24:17,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:24:17,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:24:17,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:24:17,515 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 -> false [2020-08-18 10:24:17,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:24:17,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:24:17,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:24:17,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:24:17,833 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:24:17,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-18 10:24:17,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcaba3ec0/d6f808496052404690847219c5b03d9a/FLAG8a15e322a [2020-08-18 10:24:18,371 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:24:18,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product39.cil.c [2020-08-18 10:24:18,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcaba3ec0/d6f808496052404690847219c5b03d9a/FLAG8a15e322a [2020-08-18 10:24:18,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcaba3ec0/d6f808496052404690847219c5b03d9a [2020-08-18 10:24:18,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:24:18,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:24:18,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:18,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:24:18,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:24:18,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:18" (1/1) ... [2020-08-18 10:24:18,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424d9305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:18, skipping insertion in model container [2020-08-18 10:24:18,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:24:18" (1/1) ... [2020-08-18 10:24:18,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:24:18,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:24:19,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:19,123 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:24:19,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:24:19,327 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:24:19,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:19 WrapperNode [2020-08-18 10:24:19,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:24:19,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:24:19,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:24:19,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:24:19,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:19" (1/1) ... [2020-08-18 10:24:19,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:19" (1/1) ... [2020-08-18 10:24:19,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:19" (1/1) ... [2020-08-18 10:24:19,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:19" (1/1) ... [2020-08-18 10:24:19,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:19" (1/1) ... [2020-08-18 10:24:19,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:19" (1/1) ... [2020-08-18 10:24:19,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:19" (1/1) ... [2020-08-18 10:24:19,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:24:19,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:24:19,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:24:19,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:24:19,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:19" (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 10:24:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:24:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:24:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:24:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:24:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:24:19,483 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:24:19,484 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:24:19,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:24:19,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:24:19,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:24:19,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:24:19,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:24:19,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:24:19,486 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:24:19,486 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:24:19,486 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:24:19,486 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:24:19,486 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:24:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:24:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:24:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:24:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:24:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:24:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:24:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 10:24:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:24:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:24:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:24:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:24:19,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:24:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:24:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:24:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:24:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:24:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:24:19,489 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:24:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:24:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:24:19,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:24:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:24:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:24:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:24:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:24:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:24:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:24:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:24:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:24:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:24:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:24:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:24:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:24:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:24:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:24:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:24:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:24:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 10:24:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:24:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:24:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:24:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:24:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:24:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:24:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:24:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:24:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:24:19,499 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 10:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:24:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:24:19,501 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 10:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:24:19,502 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:24:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:24:19,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:24:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:24:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:24:19,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:24:20,643 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:24:20,644 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:24:20,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:24:20 BoogieIcfgContainer [2020-08-18 10:24:20,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:24:20,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:24:20,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:24:20,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:24:20,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:24:18" (1/3) ... [2020-08-18 10:24:20,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3e28a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:24:20, skipping insertion in model container [2020-08-18 10:24:20,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:24:19" (2/3) ... [2020-08-18 10:24:20,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3e28a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:24:20, skipping insertion in model container [2020-08-18 10:24:20,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:24:20" (3/3) ... [2020-08-18 10:24:20,664 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-08-18 10:24:20,676 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:24:20,687 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:24:20,701 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:24:20,733 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:24:20,733 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:24:20,733 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:24:20,733 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:24:20,733 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:24:20,734 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:24:20,734 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:24:20,734 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:24:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-18 10:24:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 10:24:20,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:20,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:20,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:20,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1123456625, now seen corresponding path program 1 times [2020-08-18 10:24:20,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:20,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291666602] [2020-08-18 10:24:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:21,446 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:21,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:21,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:21,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:21,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:21,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:21,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:24:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:24:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:21,547 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 10:24:21,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291666602] [2020-08-18 10:24:21,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:21,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:24:21,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111991513] [2020-08-18 10:24:21,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:24:21,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:21,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:24:21,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:24:21,581 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-18 10:24:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:22,768 INFO L93 Difference]: Finished difference Result 307 states and 401 transitions. [2020-08-18 10:24:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:24:22,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 10:24:22,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:22,783 INFO L225 Difference]: With dead ends: 307 [2020-08-18 10:24:22,784 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 10:24:22,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:24:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 10:24:22,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 132. [2020-08-18 10:24:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 10:24:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2020-08-18 10:24:22,883 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 46 [2020-08-18 10:24:22,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:22,884 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2020-08-18 10:24:22,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:24:22,884 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2020-08-18 10:24:22,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 10:24:22,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:22,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:22,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:24:22,893 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:22,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:22,894 INFO L82 PathProgramCache]: Analyzing trace with hash -790150173, now seen corresponding path program 1 times [2020-08-18 10:24:22,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:22,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624495501] [2020-08-18 10:24:22,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,277 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:23,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:24:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:24:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:23,314 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 10:24:23,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624495501] [2020-08-18 10:24:23,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:23,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:24:23,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985172395] [2020-08-18 10:24:23,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:24:23,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:23,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:24:23,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:24:23,318 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand 4 states. [2020-08-18 10:24:23,738 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:24,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:24,599 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-08-18 10:24:24,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:24:24,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 10:24:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:24,605 INFO L225 Difference]: With dead ends: 234 [2020-08-18 10:24:24,605 INFO L226 Difference]: Without dead ends: 150 [2020-08-18 10:24:24,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:24:24,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-08-18 10:24:24,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2020-08-18 10:24:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 10:24:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-18 10:24:24,647 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 47 [2020-08-18 10:24:24,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:24,647 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-18 10:24:24,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:24:24,647 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-18 10:24:24,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 10:24:24,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:24,650 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 10:24:24,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:24:24,650 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:24,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:24,650 INFO L82 PathProgramCache]: Analyzing trace with hash 271076632, now seen corresponding path program 1 times [2020-08-18 10:24:24,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:24,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876265149] [2020-08-18 10:24:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:25,020 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:25,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:25,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:25,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:25,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:25,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:25,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:24:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:25,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:24:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:25,154 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 10:24:25,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876265149] [2020-08-18 10:24:25,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:25,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:24:25,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825742472] [2020-08-18 10:24:25,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:24:25,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:25,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:24:25,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:24:25,158 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 8 states. [2020-08-18 10:24:25,543 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:25,872 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:26,153 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:26,396 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:27,140 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:28,879 INFO L93 Difference]: Finished difference Result 421 states and 521 transitions. [2020-08-18 10:24:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:24:28,880 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 10:24:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:28,885 INFO L225 Difference]: With dead ends: 421 [2020-08-18 10:24:28,886 INFO L226 Difference]: Without dead ends: 322 [2020-08-18 10:24:28,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:24:28,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-08-18 10:24:28,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 264. [2020-08-18 10:24:28,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-18 10:24:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 318 transitions. [2020-08-18 10:24:28,968 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 318 transitions. Word has length 51 [2020-08-18 10:24:28,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:28,968 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 318 transitions. [2020-08-18 10:24:28,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:24:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 318 transitions. [2020-08-18 10:24:28,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 10:24:28,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:28,971 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 10:24:28,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:24:28,972 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:28,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:28,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1813365187, now seen corresponding path program 1 times [2020-08-18 10:24:28,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:28,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013000093] [2020-08-18 10:24:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:29,266 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:29,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:29,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:29,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:29,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:29,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:24:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:24:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:29,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 10:24:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:29,437 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 10:24:29,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013000093] [2020-08-18 10:24:29,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:29,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:24:29,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312114899] [2020-08-18 10:24:29,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:24:29,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:29,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:24:29,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:24:29,440 INFO L87 Difference]: Start difference. First operand 264 states and 318 transitions. Second operand 12 states. [2020-08-18 10:24:29,927 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:30,244 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:30,495 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:30,750 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:31,350 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:32,158 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:32,601 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:32,983 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:33,336 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:33,627 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:24:34,148 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:34,541 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:24:34,841 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:36,690 INFO L93 Difference]: Finished difference Result 1065 states and 1468 transitions. [2020-08-18 10:24:36,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 10:24:36,691 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 10:24:36,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:36,700 INFO L225 Difference]: With dead ends: 1065 [2020-08-18 10:24:36,700 INFO L226 Difference]: Without dead ends: 825 [2020-08-18 10:24:36,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 10:24:36,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-08-18 10:24:36,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 732. [2020-08-18 10:24:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-08-18 10:24:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 932 transitions. [2020-08-18 10:24:36,892 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 932 transitions. Word has length 57 [2020-08-18 10:24:36,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:36,892 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 932 transitions. [2020-08-18 10:24:36,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:24:36,893 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 932 transitions. [2020-08-18 10:24:36,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 10:24:36,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:36,898 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] [2020-08-18 10:24:36,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:24:36,898 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:36,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2128676035, now seen corresponding path program 1 times [2020-08-18 10:24:36,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:36,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950767738] [2020-08-18 10:24:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,193 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:37,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:24:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:24:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 10:24:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 10:24:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:37,332 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 10:24:37,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950767738] [2020-08-18 10:24:37,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:24:37,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:24:37,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317300322] [2020-08-18 10:24:37,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:24:37,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:37,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:24:37,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:24:37,336 INFO L87 Difference]: Start difference. First operand 732 states and 932 transitions. Second operand 6 states. [2020-08-18 10:24:37,711 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:39,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:39,598 INFO L93 Difference]: Finished difference Result 1759 states and 2407 transitions. [2020-08-18 10:24:39,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 10:24:39,599 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 10:24:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:39,610 INFO L225 Difference]: With dead ends: 1759 [2020-08-18 10:24:39,610 INFO L226 Difference]: Without dead ends: 1051 [2020-08-18 10:24:39,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:24:39,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2020-08-18 10:24:39,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 964. [2020-08-18 10:24:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2020-08-18 10:24:39,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1220 transitions. [2020-08-18 10:24:39,856 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1220 transitions. Word has length 61 [2020-08-18 10:24:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:39,856 INFO L479 AbstractCegarLoop]: Abstraction has 964 states and 1220 transitions. [2020-08-18 10:24:39,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:24:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1220 transitions. [2020-08-18 10:24:39,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 10:24:39,860 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:39,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:39,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:24:39,862 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:39,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1754610703, now seen corresponding path program 1 times [2020-08-18 10:24:39,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:39,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873847681] [2020-08-18 10:24:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,205 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:40,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:24:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:24:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 10:24:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 10:24:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:24:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:24:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 10:24:40,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873847681] [2020-08-18 10:24:40,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:40,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:24:40,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614645632] [2020-08-18 10:24:40,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:24:40,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:40,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:24:40,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:24:40,381 INFO L87 Difference]: Start difference. First operand 964 states and 1220 transitions. Second operand 10 states. [2020-08-18 10:24:41,186 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 10:24:41,784 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:43,730 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:45,598 INFO L93 Difference]: Finished difference Result 1865 states and 2457 transitions. [2020-08-18 10:24:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 10:24:45,598 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 10:24:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:45,606 INFO L225 Difference]: With dead ends: 1865 [2020-08-18 10:24:45,606 INFO L226 Difference]: Without dead ends: 1168 [2020-08-18 10:24:45,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 10:24:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-18 10:24:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1071. [2020-08-18 10:24:45,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-18 10:24:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1331 transitions. [2020-08-18 10:24:45,822 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1331 transitions. Word has length 88 [2020-08-18 10:24:45,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:45,824 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1331 transitions. [2020-08-18 10:24:45,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:24:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1331 transitions. [2020-08-18 10:24:45,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 10:24:45,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:45,830 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:45,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:24:45,831 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:45,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:45,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1977854615, now seen corresponding path program 1 times [2020-08-18 10:24:45,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:45,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131240622] [2020-08-18 10:24:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,145 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:46,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:24:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:24:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:24:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 10:24:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:24:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:24:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:24:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 10:24:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 10:24:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 10:24:46,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131240622] [2020-08-18 10:24:46,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:46,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 10:24:46,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699501649] [2020-08-18 10:24:46,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:24:46,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:46,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:24:46,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:24:46,369 INFO L87 Difference]: Start difference. First operand 1071 states and 1331 transitions. Second operand 10 states. [2020-08-18 10:24:47,345 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:47,627 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:24:47,903 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:48,170 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:49,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:49,220 INFO L93 Difference]: Finished difference Result 2259 states and 2935 transitions. [2020-08-18 10:24:49,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:24:49,221 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-18 10:24:49,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:49,235 INFO L225 Difference]: With dead ends: 2259 [2020-08-18 10:24:49,235 INFO L226 Difference]: Without dead ends: 1212 [2020-08-18 10:24:49,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:24:49,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-08-18 10:24:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1101. [2020-08-18 10:24:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2020-08-18 10:24:49,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1365 transitions. [2020-08-18 10:24:49,525 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1365 transitions. Word has length 130 [2020-08-18 10:24:49,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:49,526 INFO L479 AbstractCegarLoop]: Abstraction has 1101 states and 1365 transitions. [2020-08-18 10:24:49,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:24:49,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1365 transitions. [2020-08-18 10:24:49,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-08-18 10:24:49,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:49,530 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:49,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:24:49,531 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:49,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:49,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1002064467, now seen corresponding path program 1 times [2020-08-18 10:24:49,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:49,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074348351] [2020-08-18 10:24:49,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,819 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:49,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:24:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:24:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:24:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 10:24:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 10:24:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:49,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:24:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:50,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-18 10:24:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 10:24:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 10:24:50,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074348351] [2020-08-18 10:24:50,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:50,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:24:50,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085925235] [2020-08-18 10:24:50,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:24:50,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:50,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:24:50,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:24:50,022 INFO L87 Difference]: Start difference. First operand 1101 states and 1365 transitions. Second operand 12 states. [2020-08-18 10:24:50,614 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:50,852 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:51,104 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:51,797 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:52,087 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:52,360 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:53,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:24:53,474 INFO L93 Difference]: Finished difference Result 2069 states and 2643 transitions. [2020-08-18 10:24:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:24:53,475 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-08-18 10:24:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:24:53,481 INFO L225 Difference]: With dead ends: 2069 [2020-08-18 10:24:53,482 INFO L226 Difference]: Without dead ends: 992 [2020-08-18 10:24:53,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:24:53,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-08-18 10:24:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 936. [2020-08-18 10:24:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-08-18 10:24:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1136 transitions. [2020-08-18 10:24:53,744 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1136 transitions. Word has length 126 [2020-08-18 10:24:53,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:24:53,744 INFO L479 AbstractCegarLoop]: Abstraction has 936 states and 1136 transitions. [2020-08-18 10:24:53,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:24:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1136 transitions. [2020-08-18 10:24:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 10:24:53,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:24:53,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:24:53,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:24:53,750 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:24:53,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:24:53,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1767310158, now seen corresponding path program 1 times [2020-08-18 10:24:53,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:24:53,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929670455] [2020-08-18 10:24:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:24:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,099 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:24:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:24:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:24:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:24:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:24:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:24:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:24:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:24:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:24:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:24:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:24:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:24:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:24:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:24:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:24:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 10:24:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 10:24:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:24:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 10:24:54,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929670455] [2020-08-18 10:24:54,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:24:54,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 10:24:54,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778390635] [2020-08-18 10:24:54,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 10:24:54,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:24:54,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 10:24:54,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 10:24:54,299 INFO L87 Difference]: Start difference. First operand 936 states and 1136 transitions. Second operand 13 states. [2020-08-18 10:24:54,793 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:24:55,529 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:24:57,674 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:57,966 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:58,244 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:58,503 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:24:58,810 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:59,075 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:24:59,334 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:24:59,608 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:24:59,913 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:00,188 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:00,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:00,947 INFO L93 Difference]: Finished difference Result 2701 states and 3404 transitions. [2020-08-18 10:25:00,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 10:25:00,948 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-08-18 10:25:00,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:00,958 INFO L225 Difference]: With dead ends: 2701 [2020-08-18 10:25:00,958 INFO L226 Difference]: Without dead ends: 1789 [2020-08-18 10:25:00,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 10:25:00,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-08-18 10:25:01,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1687. [2020-08-18 10:25:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-18 10:25:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2019 transitions. [2020-08-18 10:25:01,359 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2019 transitions. Word has length 130 [2020-08-18 10:25:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:01,359 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2019 transitions. [2020-08-18 10:25:01,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 10:25:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2019 transitions. [2020-08-18 10:25:01,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 10:25:01,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:01,365 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 10:25:01,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:25:01,365 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:01,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:01,365 INFO L82 PathProgramCache]: Analyzing trace with hash 941448042, now seen corresponding path program 1 times [2020-08-18 10:25:01,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:01,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209850715] [2020-08-18 10:25:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,688 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 10:25:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:25:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 10:25:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-18 10:25:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:25:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 10:25:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 10:25:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 10:25:01,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209850715] [2020-08-18 10:25:01,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:01,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 10:25:01,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668686] [2020-08-18 10:25:01,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:25:01,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:01,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:25:01,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:25:01,838 INFO L87 Difference]: Start difference. First operand 1687 states and 2019 transitions. Second operand 11 states. [2020-08-18 10:25:02,775 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:05,217 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:05,471 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:05,759 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:06,092 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:06,398 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:07,062 INFO L93 Difference]: Finished difference Result 1997 states and 2554 transitions. [2020-08-18 10:25:07,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 10:25:07,063 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-08-18 10:25:07,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:07,075 INFO L225 Difference]: With dead ends: 1997 [2020-08-18 10:25:07,076 INFO L226 Difference]: Without dead ends: 1994 [2020-08-18 10:25:07,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-18 10:25:07,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2020-08-18 10:25:07,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1687. [2020-08-18 10:25:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1687 states. [2020-08-18 10:25:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2009 transitions. [2020-08-18 10:25:07,443 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2009 transitions. Word has length 134 [2020-08-18 10:25:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:07,444 INFO L479 AbstractCegarLoop]: Abstraction has 1687 states and 2009 transitions. [2020-08-18 10:25:07,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:25:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2009 transitions. [2020-08-18 10:25:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 10:25:07,450 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:07,450 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:07,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:25:07,450 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:07,451 INFO L82 PathProgramCache]: Analyzing trace with hash 108116472, now seen corresponding path program 1 times [2020-08-18 10:25:07,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:07,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350327950] [2020-08-18 10:25:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,819 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:07,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 10:25:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:25:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:25:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 10:25:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:07,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 10:25:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 10:25:08,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350327950] [2020-08-18 10:25:08,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:08,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 10:25:08,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112809964] [2020-08-18 10:25:08,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:25:08,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:08,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:25:08,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:25:08,021 INFO L87 Difference]: Start difference. First operand 1687 states and 2009 transitions. Second operand 12 states. [2020-08-18 10:25:08,552 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:25:09,431 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:25:09,727 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:09,995 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:10,260 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:10,522 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:25:10,863 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:11,597 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:25:11,922 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:12,197 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:25:14,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:25:14,400 INFO L93 Difference]: Finished difference Result 4159 states and 5274 transitions. [2020-08-18 10:25:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 10:25:14,401 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-18 10:25:14,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:25:14,418 INFO L225 Difference]: With dead ends: 4159 [2020-08-18 10:25:14,418 INFO L226 Difference]: Without dead ends: 2806 [2020-08-18 10:25:14,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-18 10:25:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-08-18 10:25:14,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2479. [2020-08-18 10:25:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2020-08-18 10:25:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3004 transitions. [2020-08-18 10:25:14,934 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3004 transitions. Word has length 134 [2020-08-18 10:25:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:25:14,937 INFO L479 AbstractCegarLoop]: Abstraction has 2479 states and 3004 transitions. [2020-08-18 10:25:14,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:25:14,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3004 transitions. [2020-08-18 10:25:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-18 10:25:14,949 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:25:14,950 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:14,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:25:14,950 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:25:14,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:25:14,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1415393837, now seen corresponding path program 2 times [2020-08-18 10:25:14,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:25:14,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277557527] [2020-08-18 10:25:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:25:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,333 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:25:15,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:25:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:25:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:25:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:25:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 10:25:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:25:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:25:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 10:25:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:25:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:25:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 10:25:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 10:25:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 10:25:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-18 10:25:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:25:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 10:25:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:25:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-18 10:25:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 10:25:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:25:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-08-18 10:25:15,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277557527] [2020-08-18 10:25:15,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:25:15,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 10:25:15,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933159407] [2020-08-18 10:25:15,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 10:25:15,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:25:15,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 10:25:15,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:25:15,614 INFO L87 Difference]: Start difference. First operand 2479 states and 3004 transitions. Second operand 14 states. [2020-08-18 10:25:16,167 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186